1. A water pipe construction process plan creation system that is a process plan creation system that creates a process plan of water pipe construction, the process plan 5 creation system comprising: an information acquirer that acquires water pipe-related information related to at least one of a diameter, a length, a type, the number, or arrangement of water pipes used for the water pipe construction; a process time calculator that ca :

1. A water pipe construction process plan creation system that is a process plan creation system that creates a process plan of water pipe construction, the process plan 5 creation system comprising: an information acquirer that acquires water pipe-related information related to at least one of a diameter, a length, a type, the number, or arrangement of water pipes used for the water pipe construction; a process time calculator that calculates a process time including a work time of 10 each process of the water pipe construction based on the water pipe-related information acquired by the information acquirer; and a process plan creator that creates a process plan of at least a part of the water pipe construction by using the process time of each process calculated by the process time calculator. 15

2. The water pipe construction process plan creation system according to claim 1, wherein the information acquirer acquires water pipe construction-related information related to the water pipe construction, in addition to the water pipe-related information, and 20 the process time calculator calculates the process time by using the water piperelated information and the water pipe construction-related information acquired by the information acquirer. 35

3. The water pipe construction process plan creation system according to claim 2, wherein the water pipe construction-related information includes on-ground-related information including information related to on5 ground of a place where the water pipes are buried, and underground-related information including information related to underground of the place where the water pipes are buried.

4. The water pipe construction process plan creation system according to claim 3, 10 wherein the on-ground-related information includes on-ground periphery-related information related to a periphery of onground of the place where the water pipes are buried, and road situation-related information related to a road situation of the place 15 where the water pipes are buried.

5. The water pipe construction process plan creation system according to claim 3 or 4, wherein the underground-related information includes information related to at least one of 20 an underground obstacle, a road structure, soil quality, or groundwater.

6. The water pipe construction process plan creation system according to any one of claims 2 to 5, wherein the process time calculator calculates a spare time in each process of the water pipe 36 construction based on the water pipe-related information and the water pipe constructionrelated information, and the process plan creator creates a process plan of at least a part of the water pipe construction in consideration of the spare time as well as the process time of each process. 5

7. The water pipe construction process plan creation system according to claim 6, wherein the process time calculator includes a spare time corrector that corrects the spare time in each process of the water pipe construction based on past performance. 10

8. The water pipe construction process plan creation system according to any one of claims 2 to 7, wherein the information acquirer acquires construction suspension-related information related to a date when no water pipe construction is performed, as the water pipe 15 construction-related information, and the process plan creator creates a process plan of at least a part of the water pipe construction by using the construction suspension-related information acquired by the information acquirer and the process time of each process calculated by the process time calculator. 20

9. The water pipe construction process plan creation system according to any one of claims 1 to 8, further comprising: a progress status-related information acquirer that acquires progress status-related information related to a progress status of the water pipe construction; and 37 a process plan modifier that modifies the process plan created by the process plan creator, by using the progress status-related information acquired by the progress statusrelated information acquirer. 5 10. A process plan creation method for creating a process plan of water pipe construction, the process plan creation method comprising: an information acquisition step of acquiring water pipe-related information related to at least one of a diameter, a length, a type, the number, or arrangement of water pipes used for the water pipe construction; 10 a process time calculation step of calculating a process time including a work time of each process of the water pipe construction based on the water pipe-related information acquired in the information acquisition step; and a process plan creation step of creating a process plan of at least a part of the water pipe construction by using the process time of each process calculated in the process time 15 calculation step.

11. A program for creating a process plan of water pipe construction, the program causing a computer to acquire water pipe-related information related to at least one of a diameter, a 20 length, a type, the number, or arrangement of water pipes used for the water pipe construction; to calculate a process time including a work time of each process of the water pipe construction based on the acquired water pipe-related information; and to create a process plan of at least a part of the water pipe construction by using the calculated process time of each process.

FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
[See section 10, Rule 13]
PROCESS PLAN CREATION SYSTEM FOR WATER PIPE WORK, PROCESS PLAN
CREATION METHOD, AND PROBGRAM FOR PROCESS PLAN CREATION;
KUBOTA CORPORATION, A CORPORATION ORGANIZED AND EXISTING UNDER
THE LAWS OF JAPAN, WHOSE ADDRESS IS 2-47, SHIKITSUHIGASHI 1-CHOME,
NANIWA-KU, OSAKA-SHI, OSAKA 5568601, JAPAN
THE FOLLOWING SPECIFICATION PARTICULARLY DESCRIBES THE INVENTION
AND THE MANNER IN WHICH IT IS TO BE PERFORMED.

2
TECHNICAL FIELD
[0001] The present teaching relates to a process plan creation system for creating a process
plan of water pipe construction, a process plan creation method, and a program for creating a
process plan.
5
BACKGROUND ART
[0002] In general, a process plan is created in construction, and work proceeds according to
the created plan. As a construction process creation system, as disclosed in Patent
Document 1, for example, a known construction process creation system includes a
10 calculation unit to calculate a construction period of each of construction works for each of
construction sections based on a construction physical quantity of a construction object for
each of the construction sections, a man-hour coefficient indicating a proportion of a manhour to the construction physical quantity in the construction sections and the construction
works, a difficulty coefficient, and a modularization percentage indicating a percentage of the
15 number of assembly locations in a module assembled in advance at a place different from the
construction section to the total number of assembly locations in the construction section.
CITATION LIST
PATENT DOCUMENT
20 [0003] Patent Document 1: Japanese Patent No. 5665759
SUMMARY OF INVENTION
TECHNICAL PROBLEM
[0004] In the construction process creation system of Patent Document 1, a construction

3
time is calculated based on the construction physical quantity of the construction object, the
man-hour coefficient, the difficulty coefficient, and the modularization percentage.
However, in the case of water pipe construction, modularization is difficult, and after
excavating the ground at the site, water pipes need to be connected underground and
5 backfilled one by one. Thus, in water pipe construction, the process significantly changes
depending on, for example, the diameter, length, and type of each pipe and the number or
arrangement of water pipes.
[0005] For the foregoing reasons, simple process calculations are difficult in water pipe
construction, and processes have been created manually based on experience and knowledge
10 of skilled operators. This process of water pipe construction requires significant time for
skilled operators and cannot be created easily.
[0006] It is therefore an object of the present teaching to achieve a process plan creation
system capable of easily creating a process plan of water pipe construction.
SOLUTION TO PROBLEM
15 [0007] A water pipe construction process plan creation system according to one
embodiment of the present teaching creates a process plan of water pipe construction. The
process plan creation system includes: an information acquirer that acquires water piperelated information related to at least one of a diameter, a length, a type, the number, or
arrangement of water pipes used for the water pipe construction; a process time calculator
20 that calculates a process time including a work time of each process of the water pipe
construction based on the water pipe-related information acquired by the information
acquirer; and a process plan creator that creates a process plan of at least a part of the water
pipe construction by using the process time of each process calculated by the process time
calculator. (first configuration)

4
[0008] With the configuration described above, the process time of each process of water
pipe construction is calculated based on the water pipe-related information, and a process plan
of at least a part of water pipe construction is created by using the calculated process time.
Accordingly, the process plan of water pipe construction can be automatically created easily.
5 The process plan includes at least one of a daily process plan or a total process plan. The
total process plan refers to a process plan from the start to the end of water pipe construction,
and includes a weekly process plan, a monthly process plan, an annual process plan, and so
forth.
[0009] In the first configuration, the information acquirer acquires water pipe construction10 related information related to the water pipe construction, in addition to the water pipe-related
information. The process time calculator calculates the process time by using the water
pipe-related information and the water pipe construction-related information acquired by the
information acquirer. (second configuration)
[0010] With this configuration, the process plan of water pipe construction can be created
15 by using the water pipe construction-related information related to water pipe construction, in
addition to the water pipe-related information. Thus, the process plan of water pipe
construction can be more accurately created.
[0011] In the second configuration, the water pipe construction-related information
includes on-ground-related information including information related to on-ground of a place
20 where the water pipes are buried, and underground-related information including information
related to underground of the place where the water pipes are buried. (third configuration).
[0012] With this configuration, a process time of each process of water pipe construction
can be calculated in consideration of the on-ground-related information and the undergroundrelated information significantly affecting water pipe construction. Thus, the process plan of

5
water pipe construction can be more accurately created.
[0013] In the third configuration, the on-ground-related information includes on-ground
periphery-related information related to a periphery of on-ground of the place where the
water pipes are buried, and road situation-related information related to a road situation of
5 the place where the water pipes are buried. (fourth configuration)
[0014] With this configuration, a process time of each process of water pipe construction
can be calculated in consideration of the on-ground periphery-related information and the
road situation-related information in the on-ground-related information significantly affecting
water pipe construction. Thus, the process plan of water pipe construction can be more
10 accurately created.
[0015] In the third or fourth configuration, the underground-related information includes
information related to at least one of an underground obstacle, a road structure, soil quality,
or groundwater. (fifth configuration)
[0016] With this configuration, a process time of each process of water pipe construction
15 can be calculated in consideration of information related to at least one of an underground
obstacle, a road structure, soil quality, or groundwater significantly affecting water pipe
construction. Thus, the process plan of water pipe construction can be more accurately
created.
[0017] In any one of the second through fifth configurations, the process time calculator
20 calculates a spare time in each process of the water pipe construction based on the water
pipe-related information and the water pipe construction-related information. The process
plan creator creates a process plan of at least a part of the water pipe construction in
consideration of the spare time as well as the process time of each process. (sixth
configuration)

6
[0018] With this configuration, even in cases such as a case where the process is changed
because of an unexpected underground buried object or a case where the process is changed
because of on-ground situations (such as a case where there is a time zone in which
construction cannot be conducted at an entrance of a parking lot or a store), a process plan of
5 water pipe construction can be created in consideration of a risk of such cases. Thus, the
process plan of water pipe construction can be more accurately created.
[0019] In the sixth configuration, the process time calculator includes a spare time
corrector that corrects the spare time in each process of the water pipe construction based on
past performance. (seventh configuration)
10 [0020] With this configuration, the spare time in each process of water pipe construction
can be accurately obtained based on past performance. For example, since parameters
related to water pipe construction differ among construction sites, the spare time is corrected
in accordance with the parameters so that past performance can be reflected on the spare time.
In addition, the spare time is corrected based on information such as past weather data in
15 periods of water pipe construction, and thus, the spare time can be more accurately obtained.
[0021] Accordingly, the process plan of water pipe construction can be more accurately
created by using the corrected spare time.
[0022] In any one of the second through seventh configurations, the information acquirer
acquires construction suspension-related information related to a date when no water pipe
20 construction is performed, as the water pipe construction-related information. The process
plan creator creates a process plan of at least a part of the water pipe construction by using
the construction suspension-related information acquired by the information acquirer and the
process time of each process calculated by the process time calculator. (eighth configuration)
[0023] With this configuration, a process of water pipe construction can be created except

7
for a period or a time zone in which water pipe construction is suspended. Thus, the process
plan of water pipe construction can be more accurately created.
[0024] In any one of the first through eighth configurations, the water pipe construction
process plan creation system further includes: a progress status-related information acquirer
5 that acquires progress status-related information related to a progress status of the water pipe
construction; and a process plan modifier that modifies the process plan created by the
process plan creator, by using the progress status-related information acquired by the
progress status-related information acquirer. (ninth configuration)
[0025] With this configuration, the process plan of water pipe construction can be modified
10 in accordance with the actual progress status of water pipe construction. Thus, the process
plan of water pipe construction can be more accurately created in accordance with an actual
situation.
[0026] A process plan creation method of water pipe construction according to one
embodiment of the present teaching is a method for creating a process plan of water pipe
15 construction. The process plan creation method includes: an information acquisition step of
acquiring water pipe-related information related to at least one of a diameter, a length, a type,
the number, or arrangement of water pipes used for the water pipe construction; a process
time calculation step of calculating a process time including a work time of each process of
the water pipe construction based on the water pipe-related information acquired in the
20 information acquisition step; and a process plan creation step of creating a process plan of at
least a part of the water pipe construction by using the process time of each process
calculated in the process time calculation step. (first method)
[0027] With this method, the process time of each process of water pipe construction is
calculated based on the water pipe-related information, and a process plan of at least a part of

8
water pipe construction is created by using the calculated process time. Accordingly, the
process plan of water pipe construction can be automatically created easily.
[0028] A program for creating a process plan of water pipe construction according to one
embodiment of the present teaching is a program for creating a process plan of water pipe
5 construction. This program causes a computer to acquire water pipe-related information
related to at least one of a diameter, a length, a type, the number, or arrangement of water
pipes used for the water pipe construction; to calculate a process time including a work time
of each process of the water pipe construction based on the acquired water pipe-related
information; and to create a process plan of at least a part of the water pipe construction by
10 using the calculated process time of each process. (tenth configuration)
[0029] With this configuration, the process time of each process of water pipe construction
is calculated based on the water pipe-related information, and a process plan of at least a part
of water pipe construction is created by using the calculated process time. Accordingly, the
process plan of water pipe construction can be automatically created easily.
15 ADVANTAGEOUS EFFECTS OF INVENTION
[0030] A water pipe construction process plan creation system according to one
embodiment of the present teaching calculates a process time including a work time of each
process in water pipe construction based on water pipe-related information related to at least
one of a diameter, a length, a type, the number, or arrangement of water pipes used for water
20 pipe construction, and creates a process plan of at least a part of water pipe construction by
using the calculated process time of each process.
[0031] With this configuration, the process time of each process of water pipe construction
is calculated based on the water pipe-related information, and a process plan of at least a part
of water pipe construction is created by using the calculated process time. Accordingly, the

9
process plan of water pipe construction can be automatically created easily.
BRIEF DESCRIPTION OF DRAWINGS
[0032] [FIG. 1] FIG. 1 is a functional block diagram illustrating a schematic configuration of
5 a process plan creation system according to a first embodiment.
[FIG. 2] FIG. 2 shows an example of a daily process plan in water pipe
construction.
[FIG. 3] FIG. 3 shows an example of a monthly process plan in water pipe
construction.
10 [FIG. 4] FIG. 4 schematically illustrates a state where the ground is excavated with
a work machine.
[FIG. 5] FIG. 5 schematically illustrates a state where water pipes are placed in a
trench formed by excavation.
[FIG. 6] FIG. 6 schematically illustrates a state where water pipes are connected to
15 one another.
[FIG. 7] FIG. 7 schematically illustrates a state where water pipes are buried with a
work machine.
[FIG. 8] FIG. 8 illustrates a state where the sides of the trench are retained by sheet
piles.
20 [FIG. 9] FIG. 9 schematically illustrates an overall structure of a road.
[FIG. 10] FIG. 10 schematically illustrates an example of a calculation result of a
work time of each process in water pipe construction.
[FIG. 11] FIG. 11 is a flowchart schematically showing a process plan creation
method.

10
[FIG. 12] FIG. 12 is a flowchart schematically showing a method for acquiring
water pipe-related information and water pipe construction-related information in the process
plan creation method.
[FIG. 13] FIG. 13 is a functional block diagram showing a schematic configuration
5 of a process plan creation system according to a variation of the first embodiment.
[FIG. 14] FIG. 14 is a functional block diagram illustrating a schematic
configuration of a process plan creation system according to a second embodiment.
[FIG. 15] FIG. 15 is a flowchart of a process plan creation method executed by the
process plan creation system according to the second embodiment.
10
DESCRIPTION OF EMBODIMENT
[0033] Embodiments will be described hereinafter with reference to the drawings. In the
drawings, the same or corresponding parts are denoted by the same reference numerals, and
description thereof will not be repeated. The dimensions of components in the drawings do
15 not strictly represent actual dimensions of the components and dimensional proportions of the
components.
[0034] In the following description, expressions such as “fixed,” “connected,” and
“attached” (hereinafter referred to as “fixed or the like”) include not only a case where
members are directly fixed or the like but also a case where the members are fixed or the like
20 through other members. That is, in the following description, the expression such as “fixed
or the like” includes meanings of direct and indirect fixing or the like between members.
[0035] [First Embodiment]
(Process plan creation system of water pipe construction)
FIG. 1 is a functional block diagram illustrating a schematic configuration of a

11
process plan creation system 1 according a first embodiment of the present teaching. The
process plan creation system 1 creates and outputs a daily or monthly process plan of water
pipe construction as shown in FIGS. 2 and 3. The process plan creation system 1 may be,
for example, a computer, or may include a computer and a portable terminal capable of
5 transmitting and receiving data to/from the computer through a communication device.
[0036] The water pipe construction means construction of burying water pipes W in the
ground. The water pipe construction includes construction of exchanging water pipes W
buried in the ground as well as construction of burying new water pipes W in the ground. In
the water pipe construction, the construction of burying new water pipes W in the ground
10 includes a water pipe-laying process. The water pipe-laying process includes a daily process
and a monthly process. The daily process includes an excavation process, a piping process,
and a backfill process. The monthly process includes the daily processes for the number of
process days. The monthly process may include, for example, a carriageway line process of
drawing lines such as carriageway lines on the road surface. As the water pipe construction,
15 construction of burying new water pipes W in the ground will be described hereinafter.
[0037] It should be noted that the construction of exchanging water pipes W in the water
pipe construction includes an excavation process, a pipe removing process, a piping process,
and a backfill process in the daily process.
[0038] Processes in the daily water pipe construction will be briefly described with
20 reference to FIGS. 4 through 7. FIG. 4 schematically illustrates a state where the ground is
excavated with a work machine M. FIG. 5 schematically illustrates a state where water
pipes W are placed in a trench L formed by excavation. FIG. 6 schematically illustrates a
state where water pipes W are connected to one another. FIG. 7 schematically illustrates a
state where water pipes W are buried with a work machine M.

12
[0039] In water pipe construction, first, an excavation process of excavating the ground
with the work machine M is performed, as illustrated in FIG. 4. Although not particularly
shown in FIG. 4, the ground surface is paved with asphalt. Thus, in the excavation process,
the work machine M excavates the asphalt and then excavates the ground. In the excavation
5 process, the ground is excavated to form the trench L such that water pipes W can be placed
in the trench L.
[0040] Next, as illustrated in FIG. 5, water pipes W are placed in the trench L formed by
excavation. The water pipes W are conveyed into the trench L with, for example, a work
machine M. The water pipes W conveyed into the trench L are connected to one another, as
10 illustrated in FIG. 6. The process of conveying the water pipes W into the trench L and
connecting the water pipes W to one another in this manner is a piping process.
[0041] Thereafter, in the water pipe construction, a backfill process of backfilling the
connected water pipes W in the trench L with the work machine M is performed as illustrated
in FIG. 7. FIG. 9 schematically illustrates an overall structure of a road R. The road R
15 sequentially includes a surface layer R1, an upper subgrade R2, a lower subgrade R3, and a
roadbed R4 in this order from the top. In the case of backfilling the water pipes W in the
trench L, the trench L is backfilled in the order of the roadbed R4, the lower subgrade R3, the
upper subgrade R2, and the surface layer R1 such that the road has a structure illustrated in
FIG. 9.
20 [0042] In the water pipe construction, an earth retaining process as illustrated in FIG. 8
may be performed after the excavation process. In this earth retaining process, the sides of
the trench L excavated in the excavation process are reinforced with sheet piles P. In the
earth retaining process, the entire sides of the trench L may be reinforced or the sides of the
trench L may be partially reinforced.

13
[0043] As illustrated in FIG. 1, the process plan creation system 1 includes an information
acquirer 11, a plan controller 15, a process time calculator 21, and a process plan creator 31.
[0044] The information acquirer 11 acquires water pipe-related information and water pipe
construction-related information. The water pipe-related information includes information
5 related to at least one of the diameter, length, type (e.g., straight pipe, specially shaped pipe,
T-shaped pipe, or cut pipe, etc.), number, or arrangement of water pipes used in water pipe
construction. The water pipe-related information is, for example, information obtained from
a pipe conduit diagram of water pipes or the like. That is, the water pipe-related information
may be automatically obtained from a device that generates the pipe conduit diagram, for
10 example. The water pipe-related information may be obtained by input or may be obtained
from a result calculated by a calculator.
[0045] The water pipe construction-related information includes information related to
water pipe construction. Specifically, the water pipe construction-related information
includes information related to on-site conditions. The information related to on-site
15 conditions includes information on at least one of a workable time, the number of available
persons, the type and number of work machines used, feasibility of parallel work, feasibility
of parallel use of work machines, the conveyance time of soil or water pipes, whether test
excavation is required or not, or other information.
[0046] The water pipe construction-related information includes on-ground-related
20 information and underground-related information. The on-ground-related information
includes information related to on-ground of a place where water pipes are buried.
Specifically, the on-ground-related information includes on-ground periphery-related
information and road situation-related information. The on-ground periphery-related
information includes information related to environments near the place where water pipe

14
construction is performed (facilities such as houses, stores, and parking lots facing the
construction site, urban or suburban construction site, etc.). The road situation-related
information includes traffic information in a place where water pipe construction is performed
and, in a case where the water pipe construction is performed on a road, information on at
5 least one of the width or the number of lanes of the road.
[0047] The underground-related information includes information related to underground
of the place where water pipes are buried. Specifically, the underground-related information
includes information related to at least one of an underground obstacle (an underground
structure such as crossing pipes, other underground buried objects, etc.), a road structure, soil
10 quality, or groundwater.
[0048] That is, the underground-related information may include information related to the
type, size, position, and so forth of the underground obstacle. The underground-related
information may include information related to road structures such as the thickness and
characteristics of pavement and subgrade. The underground-related information may
15 include information related to soil quality (sand, silt, clay, etc.) at the excavation position.
The underground-related information may include information related to the position and
amount of groundwater. The underground-related information may include information
related to necessity of earth retaining, the type of earth retaining (aluminium sheet piles,
wooden sheet piles, lightweight steel sheet piles, H-steel horizontal sheet piles, etc.), an earth
20 retaining technique (installation, driving, etc.), and the position and area of earth retaining.
[0049] The information acquirer 11 also acquires information related to a construction
period, a constructible date, and so forth, as the water pipe construction-related information.
The information related to the construction period and the constructible date acquired by the
information acquirer 11 is used in creating a process plan by the process plan creator 31.

15
[0050] The information acquirer 11 may acquire construction suspension-related
information related to a date when no water pipe construction is performed, as the water pipe
construction-related information. In this case, the process plan creator 31 creates a process
plan of at least a part of water pipe construction by using the construction suspension-related
5 information acquired by the information acquirer 11 and a process time of each process
calculated by the process time calculator 21 described later.
[0051] Based on the water pipe-related information and the water pipe construction-related
information acquired by the information acquirer 11, the plan controller 15 determines
construction conditions necessary for creating a process plan of water pipe construction in
10 information not obtained by the information acquirer 11. Specifically, the plan controller 15
selects a work range calculated by the process time calculator 21 described later, and
determines conditions for earth retaining construction (necessity, application range, etc.) and
conditions for test excavation (necessity, the number of test excavation sites, etc.). The work
range selected by the plan controller 15, and the conditions for earth retaining construction
15 and conditions for test excavation determined by the plan controller 15 are output to the
process time calculator 21 as a part of the water pipe construction-related information.
[0052] Based on the water pipe-related information and the water pipe construction-related
information acquired by the information acquirer 11, the process time calculator 21 calculates
a process time including a work time of each process of water pipe construction. The
20 process time calculator 21 calculates a work time necessary for burying one water pipe, based
on the water pipe-related information and the water pipe construction-related information, for
example. FIG. 10 schematically illustrates an example of a calculation result of a work time
of each process in water pipe construction. FIG. 10 shows a work time of each process
together with a pipe conduit of water pipes for description. The process plan creation system

16
1 may show a work time of each process together with a pipe conduit of water pipes as shown
in FIG. 10, or may show only the work times of processes as a list.
[0053] The process time calculator 21 outputs the work time calculated in each process to
the process plan creator 31 described later, as process time data.
5 [0054] The process time calculator 21 may calculate a work time necessary for burying one
water pipe by using a work time in accordance with the water pipe-related information and a
work time in accordance with the water pipe construction-related information, or may
calculate a work time necessary for burying one water pipe in consideration of a coefficient in
accordance with the water pipe-related information and a coefficient in accordance with the
10 water pipe construction-related information with respect to a reference work time.
[0055] The process time calculator 21 may calculate a spare time in each process of water
pipe construction based on the water pipe-related information and the water pipe constructionrelated information. The spare time may be included in the water pipe construction-related
information, or the process time calculator 21 may calculate the spare time in consideration of
15 a factor of a delay of a process time of each process based on the water pipe-related
information and the water pipe construction-related information. For example, the process
time calculator 21 may calculate the spare time to process times of excavation and piping,
from the probability of presence of an underground obstacle in the underground-related
information, for example. That is, the process time calculator 21 may calculate the spare
20 time in consideration of, for example, the probability of occurrence of an event in each
process.
[0056] The process plan creator 31 creates a process plan of at least a part of water pipe
construction by using the process time of each process calculated by the process time
calculator 21. The process plan creator 31 creates a process plan as shown in FIG. 2, for

17
example, by using input conditions, such as a construction period and workable date, and the
process time of each process.
[0057] In the case where the process time calculator 21 calculates the spare time, the
process plan creator 31 may create the process plan in consideration of the spare time as well
5 as the process time of each process.
[0058] The process plan creator 31 may determine the order of construction sites in a pipe
conduit on which water pipe construction is performed. For example, the process plan
creator 31 may determine the order of construction sites depending on difficulty of
construction.
10 [0059] In the manner described above, the water pipe construction process plan creation
system 1 according to this embodiment creates a daily process plan of water pipe
construction. The process plan creation system 1 includes: the information acquirer 11 that
acquires water pipe-related information related to at least one of the diameter, length, type,
number, or arrangement of water pipes W used for water pipe construction; the process time
15 calculator 21 that calculates a process time including a work time of each process of water
pipe construction based on the water pipe-related information acquired by the information
acquirer 11; and the process plan creator 31 that creates a process plan of at least a part of the
water pipe construction by using the process time of each process calculated by the process
time calculator 21.
20 [0060] With this configuration, the process time of each process of daily water pipe
construction is calculated based on the water pipe-related information, and a process plan of at
least a part of daily water pipe construction can be created by using the calculated process
time. Accordingly, a daily process plan of water pipe construction can be automatically
created easily.

18
[0061] Further, the water pipe construction process plan creation system 1 may create a
monthly process plan of water pipe construction as shown in FIG. 3, based on the created
daily process plan of water pipe construction. Specifically, the water pipe construction
process plan creation system 1 may create a monthly process plan of water pipe construction
5 as shown in FIG. 3 by aggregating daily process plans of water pipe construction created as
described above for the same number of days of the construction.
[0062] The water pipe construction process plan creation system 1 may create only a daily
process plan of water pipe construction or may create only a monthly process plan of water
pipe construction. The water pipe construction process plan creation system 1 may create a
10 total process plan including weekly process plans, monthly process plans, and annual process
plans, and so forth. A method for calculating a process time of each process in process plans
except for daily process plans in water pipe construction is similar to the above-described
method for calculating a process time of each process in the daily process plan of water pipe
construction.
15 [0063] In this embodiment, the information acquirer 11 also acquires water pipe
construction-related information related to water pipe construction in addition to the water
pipe-related information. The process time calculator 21 calculates the process time by
using the water pipe-related information and the water pipe construction-related information
acquired by the information acquirer 11.
20 [0064] Accordingly, a process plan of water pipe construction can be created by using the
water pipe construction-related information related to water pipe construction in addition to
the water pipe-related information. Thus, the process plan of water pipe construction can be
more accurately created.
[0065] In this embodiment, the water pipe construction-related information includes on-

19
ground-related information including information related to on-ground of a place where water
pipes W are buried, and underground-related information including information related to
underground of the place where the water pipes W are buried.
[0066] Accordingly, a process time of each process of water pipe construction can be
5 calculated in consideration of the on-ground-related information and the underground-related
information significantly affecting water pipe construction. Thus, the process plan of water
pipe construction can be more accurately created.
[0067] In this embodiment, the on-ground-related information includes on-ground
periphery-related information related to a periphery of on-ground of the place where the water
10 pipes W are buried, and road situation-related information related to a road situation of the
place where the water pipes W are buried.
[0068] Accordingly, a process time of each process of water pipe construction can be
calculated in consideration of the on-ground periphery-related information and the road
situation-related information in the on-ground-related information significantly affecting
15 water pipe construction. Thus, the process plan of water pipe construction can be more
accurately created.
[0069] In this embodiment, the underground-related information includes information
related to at least one of an underground obstacle, a road structure, soil quality, or
groundwater.
20 [0070] Accordingly, a process time of each process of water pipe construction can be
calculated in consideration of information related to at least one of an underground obstacle, a
road structure, soil quality, or groundwater significantly affecting water pipe construction.
Thus, the process plan of water pipe construction can be more accurately created.
[0071] In this embodiment, the process time calculator 21 may calculate the spare time in

20
each process of water pipe construction based on the water pipe-related information and the
water pipe construction-related information. The process plan creator 31 may create a
process plan of at least a part of the water pipe construction in consideration of the spare time
as well as the process time of each process.
5 [0072] In the manner described above, even in cases such as a case where the process is
changed because of an unexpected underground buried object and a case where the process is
changed because of on-ground situations (such as a case where there is a time zone in which
construction cannot be conducted at an entrance of a parking lot or a store), a process plan of
water pipe construction can be created in consideration of a risk of such cases. Thus, the
10 process plan of water pipe construction can be more accurately created.
[0073] In this embodiment, the information acquirer 11 may acquire construction
suspension-related information related to a date when no water pipe construction is
performed, as the water pipe construction-related information. The process plan creator 31
may create a process plan of at least a part of water pipe construction by using the
15 construction suspension-related information acquired by the information acquirer 11 and the
process time of each process calculated by the process time calculator 21.
[0074] Accordingly, a process of water pipe construction can be created except for a period
or a time zone in which water pipe construction is suspended. Thus, the process plan of
water pipe construction can be more accurately created.
20 [0075] (Process plan creation method)
A process plan creation method executed by the process plan creation system 1
having the configuration described above will now be described with reference to FIGS. 11
and 12. FIG. 11 is a flowchart schematically showing the process plan creation method.
FIG. 12 is a flowchart schematically showing a method for acquiring water pipe-related

21
information and water pipe construction-related information in the process plan creation
method.
[0076] As shown in FIG. 11, first, the information acquirer 11 of the process plan creation
system 1 acquires a construction period and a workable date (step S1). The construction
5 period and the workable date may be input to the process plan creation system 1, for example,
or the process plan creation system 1 may acquire the information from another system or a
memory device.
[0077] Next, in step S2, the information acquirer 11 acquires water pipe-related
information and water pipe construction-related information. Specifically, as shown in the
10 flowchart of FIG. 12, the information acquirer 11 acquires water pipe-related information and
water pipe construction-related information.
[0078] First, in step SA1, the information acquirer 11 reads pipe design date of water pipes.
The information acquirer 11 reads the design data from another system, a memory device, or
other devices, for example. The design data is data related to at least one of the size
15 (diameter and length), type, number, or arrangement of water pipes and is obtained by pipe
conduit design of water pipes. That is, the information acquirer 11 acquires the water piperelated information. It should be noted that the design data may include on-ground-related
information on a periphery of the pipe conduit of water pipes.
[0079] Thereafter, in step SA2, the plan controller 15 selects a work range that is an input
20 range of construction conditions in step SA3. The work range selected by the plan controller
15 is input to the information acquirer 11. Selection of the work range may be performed by
input to the information acquirer 11 or may be performed by using a work range set in another
system or a memory device.
[0080] The work range may be a range of the entire pipe conduit on which water pipe

22
construction is performed, or may be a range of only a part of the pipe conduit. The
information acquirer 11 may select the work range by selecting a start point and an end point
of the pipe conduit.
[0081] Subsequently, in step SA3, the information acquirer 11 acquires construction
5 conditions of water pipes in the work range selected in step SA2. The construction
conditions include water pipe construction-related information. That is, the construction
conditions include information related to on-site conditions, on-ground-related information,
and underground-related information.
[0082] The information related to on-site conditions includes information on at least one of
10 a workable time, the number of available persons, the type and number of work machines
used, feasibility of parallel work, feasibility of parallel use of work machines, the conveyance
time of soil or water pipes, or other information.
[0083] The on-ground-related information includes traffic information in a plate where
water pipe construction is performed and, in a case where the water pipe construction is
15 performed on a road, information on at least one of the width and the number of lanes of the
road, or environments (houses, stores, etc.) near a place where water pipe construction is
performed.
[0084] The underground-related information includes information related to at least one of
an underground obstacle (underground structures such as crossing pipes, other underground
20 buried objects, etc.), a road structure, soil quality, or groundwater. The underground-related
information may include information related to the type, size, position, and so forth of the
underground obstacle. The underground-related information may include information
related to road structures such as the thickness and characteristics of pavement and subgrade.
The underground-related information may include information related to soil quality (sand,

23
silt, clay, etc.) at the excavation position. The underground-related information may include
information related to the position and amount of groundwater. The underground-related
information may include information related to necessity of earth retaining, an earth retaining
method (sheet piles, shore struts, etc.), an earth retaining technique (installation, driving, etc.),
5 and the range of earth retaining.
[0085] In step SA4, the plan controller 15 determines whether earth retaining is performed
or not and the range of the earth retaining, from the underground-related information acquired
by the information acquirer 11. Specifically, the plan controller 15 determines whether earth
retaining is performed or not and the range of the earth retaining based on information of
10 underground soil quality and groundwater, for example. The information related to earth
retaining determined by the plan controller 15 is input to the information acquirer 11 as the
water pipe construction-related information.
[0086] Thereafter, in step SA5, the plan controller 15 determines whether test excavation is
performed or not and a test excavation site from the underground-related information acquired
15 by the information acquirer 11, for example. Specifically, the plan controller 15 determines
whether test excavation is performed or not and a test excavation site, based on information
on, for example, an underground obstacle and so forth. The information related to test
excavation determined by the plan controller 15 is input to the information acquirer 11 as the
water pipe construction-related information. Then, the process plan creation system 1
20 returns to the flowchart of FIG. 11, and performs the process of step S3.
[0087] Step SA4 may not be performed by a process plan creation method. Step SA5
may not be performed by the process plan creation method.
[0088] In step S3 in the flowchart of FIG. 11, the process time calculator 21 calculates a
process time of each process in water pipe construction based on the water pipe-related

24
information and the water pipe construction-related information acquired in step S2.
Specifically, the process time calculator 21 calculates a work time necessary for burying one
water pipe, based on the water pipe-related information and the water pipe constructionrelated information, for example. The method for calculating the work time by the process
5 time calculator 21 may be any method.
[0089] In next step S4, the process plan creator 31 creates a daily process plan and a
monthly process plan by using information on the process time of each process calculated by
the process time calculator 21, and information such as the construction period, the workable
date, and so forth acquired by the information acquirer 11 in step S1, for example.
10 Specifically, the process plan creator 31 creates a process plan by combining the process
times such that the daily process is completed in one day and the total water pipe construction
is completed by performing work in the workable dates within the construction period. At
this time, the process plan creator 31 creates a process plan to efficiently facilitate the work
depending on whether parallel work is performed or not, the number and conveyance time of
15 work machines, and so forth.
[0090] Step S2 corresponds to an information acquisition step, step S3 corresponds to a
process time calculation step, and step S4 corresponds to a process plan creation step.
[0091] A water pipe construction process plan creation method according to this
embodiment is a method for creating a process plan of water pipe construction. The process
20 plan creation method includes: an information acquisition step of acquiring water pipe-related
information related to at least one of a diameter, a length, a type, the number, or arrangement
of water pipes used for the water pipe construction; a process time calculation step of
calculating a process time including a work time of each process of the water pipe
construction based on the water pipe-related information acquired in the information

25
acquisition step; and a process plan creation step of creating a process plan of at least a part of
the water pipe construction by using the process time of each process calculated in the process
time calculation step.
[0092] With the method described above, the process time of each process of water pipe
5 construction is calculated based on the water pipe-related information, and a process plan of at
least a part of water pipe construction is created by using the calculated process time.
Accordingly, the process plan of water pipe construction can be automatically created easily.
[0093] (Program for creating process plan of water pipe construction)
A program according to an embodiment of the present teaching only needs to be a
10 program that causes a computer constituting the process plan creation system 1 to perform
steps S1 through S4 shown in FIG. 11. This program is performed by the computer
constituting the process plan creation system 1 to thereby obtain the process plan creation
system 1 and the process plan creation method according to this embodiment. In this case,
the computer constituting the process plan creation system 1 may be a general-purpose
15 computer or a dedicated computer. The computer incorporates a central processing unit
(CPU), for example, and performs calculation by the CPU.
[0094] In this embodiment, data acquired by the process plan creation system 1 and a
calculation result obtained by the process plan creation system 1 are stored in an unillustrated
memory device. In the case of performing calculation by using data stored in the memory
20 device, the process plan creation system 1 reads the data and performs calculation. The
memory device is constituted by a storage medium including a memory device such as a
memory or a hard disk.
[0095] The program for creating a process plan of water pipe construction according to this
embodiment is a program for creating a process plan of water pipe construction. This

26
program causes a computer to acquire water pipe-related information related to at least one of
the diameter, length, type, number, or arrangement of water pipes W used for water pipe
construction, to calculate a process time including a work time of each process of water pipe
construction based on the acquired water pipe-related information, and to create a process
5 plan of at least a part of water pipe construction by using the calculated process time of each
process.
[0096] With this configuration, the process time of each process of water pipe construction
is calculated based on the water pipe-related information, and a process plan of at least a part
of water pipe construction is created by using the calculated process time. Accordingly, the
10 process plan of water pipe construction can be automatically created easily.
[0097] (Variations)
Next, a variation of the process plan creation system 1 with the configuration
described above will be described with reference to FIG. 13. FIG. 13 is a functional block
diagram illustrating a schematic configuration of a process plan creation system 100
15 according to this variation. A configuration of the process plan creation system 100
according to this variation is different from the configuration of the process plan creation
system 1 according to the first embodiment in that the process time calculator 121 includes a
spare time corrector 122. Therefore, in the following description, components similar to
those of the first embodiment are denoted by the same reference characters, and only
20 components different from those of the first embodiment will be described.
[0098] The process time calculator 121 calculates a spare time in each process of water
pipe construction, and corrects the spare time depending on past performance of water pipe
construction. Specifically, the process time calculator 121 includes the spare time corrector
122.

27
[0099] The spare time corrector 122 corrects the spare time depending on past performance
of water pipe construction. Specifically, the spare time corrector 122 corrects the spare time
of water pipe construction for which a process plan is created, by using actual values of
parameters of water pipe construction-related information, which differs among construction
5 sites of water pipe construction. The spare time corrector 122 also corrects the spare time in
consideration of a case where water pipe construction cannot be performed because of the
weather of seasons such as rainy season or snowfall season. In this manner, the spare time
corrector 122 corrects the spare time based on information related to past performance
including situations of construction sites of water pipe construction, the weather of past
10 construction periods, and so forth. Accordingly, calculation accuracy of the spare time can
be increased.
[0100] As described above, in this variation, the process time calculator 121 includes the
spare time corrector 122 that corrects the spare time in each process of water pipe
construction based on past performance.
15 [0101] Accordingly, the spare time in each process of water pipe construction can be
accurately obtained based on past performance. For example, since parameters related to
water pipe construction differ among construction sites, the spare time is corrected in
accordance with the parameters so that past performance can be reflected on the spare time.
In addition, the spare time is corrected based on information such as past weather data in
20 periods of water pipe construction, and thus, the spare time can be more accurately obtained.
[0102] Thus, the process plan of water pipe construction can be more accurately created by
using the corrected spare time.
[0103] [Second Embodiment]
FIG. 14 is a functional block diagram illustrating a schematic configuration of a

28
process plan creation system 200 according to a second embodiment. The process plan
creation system 200 according to the second embodiment is different from the process plan
creation systems 1 and 100 according to the first embodiment in modifying a process plan in
accordance with a progress status of water pipe construction. Thus, in the following
5 description, components similar to those of the first embodiment are denoted by the same
reference characters and will not be described again, and only components different from
those of the first embodiment will be described.
[0104] The process plan creation system 200 includes an information acquirer 11, a plan
controller 15, a process time calculator 21, a process plan creator 31, a progress status-related
10 information acquirer 241, and a process plan modifier 242.
[0105] The progress status-related information acquirer 241 acquires progress statusrelated information of water pipe construction. The progress status-related information is
information related to a progress status of water pipe construction, such as construction record
data, process data, and construction management data. The progress status-related
15 information acquirer 241 may acquire the progress status-related information from an
unillustrated construction information system for managing construction information or may
acquire the progress status-related information by input, for example.
[0106] The process plan modifier 242 modifies a process plan created by the process plan
creator 31, based on the progress status-related information acquired by the progress status20 related information acquirer 241. The process plan modifier 242 outputs the modified
process plan data.
[0107] FIG. 15 shows a flowchart of a process plan creation method performed by the
process plan creation system 200 with the configuration described above. As shown in FIG.
15, steps S1 through S4 of the process plan creation method executed by the process plan

29
creation system 200 are the same as steps S1 through S4 of the process plan creation method
executed by the process plan creation system 1 according to the first embodiment. Thus,
steps S1 through S4 will not be described here.
[0108] After the process plan creator 31 creates a process plan in step S4, the progress
5 status-related information acquirer 241 acquires progress status-related information in step
S101. Next, in step S102, the process plan modifier 242 modifies the process plan based on
the progress status-related information. Thereafter, the process plan modifier 242 outputs
the modified process plan.
[0109] In this embodiment, the process plan creation system 200 includes the progress
10 status-related information acquirer 241 that acquires the progress status-related information
related to a progress status of water pipe construction, and the process plan modifier 242 that
modifies the process plan created by the process plan creator 31 by using the progress statusrelated information acquired by the progress status-related information acquirer 241.
[0110] Accordingly, the process plan of water pipe construction can be modified depending
15 on the actual progress status of water pipe construction. With the configuration of the
process plan creation system 200 according to this embodiment, in a case where water pipe
construction cannot be performed because of the influence of the weather such as rain, for
example, the process plan can be modified to recover a delay of construction. Thus, the
process plan of water pipe construction can be more accurately created in accordance with an
20 actual situation.
[0111] (Other Embodiments)
The embodiments of the present teaching have been described above, but the above
embodiments are merely examples for carrying out the teaching. Thus, the teaching is not
limited to the embodiments, and the embodiments may be modified as necessary within a

30
range not departing from the gist of the teaching.
[0112] In the embodiments, the process plan creation system 1 includes the plan controller
15. Alternatively, the process plan creation system may not include the plan controller, and
may acquire construction conditions necessary for creating a process plan of water pipe
5 construction in information not obtained by the information acquirer 11 by input or may
acquire the construction conditions from data stored in a memory device or other devices
beforehand.
[0113] In the embodiments, the water pipe construction-related information includes
information related to on-site conditions, on-ground-related information, and underground10 related information. Alternatively, the water pipe construction-related information may not
include the information related to on-site conditions. The water pipe construction-related
information may not include the on-ground-related information. The water pipe
construction-related information may not include the underground-related information.
[0114] In the embodiments, the on-ground-related information includes on-ground
15 periphery-related information and road situation-related information. Alternatively, the onground-related information may not include the on-ground periphery-related information.
The on-ground-related information may not include the road situation-related information.
[0115] In the embodiments, the process time calculator 21 calculates a process time
including a work time of each process of water pipe construction, based on the water pipe20 related information and the water pipe construction-related information. Alternatively, the
process time calculator may calculate a process time including a work time of each process of
water pipe construction based on the water pipe-related information. The process time
calculator may calculate a process time including a work time of each process of water pipe
construction based on the water pipe construction-related information.

31
[0116] In the embodiments, the process time calculator 21 calculates the spare time in each
process of water pipe construction based on the water pipe-related information and the water
pipe construction-related information. Alternatively, the process time calculator may
calculate the spare time in each process of water pipe construction based on the water pipe5 related information. The process time calculator may calculate the spare time in each
process of water pipe construction based on the water pipe construction-related information.
[0117] In the embodiments, each of the process plan creation systems 1, 100, and 200
creates and outputs a process plan of water pipe construction of burying water pipes in the
ground. Alternatively, the process plan creation system may create a process plan of water
10 pipe construction including not only burying the water pipes but also burying of parallel pipes
arranged in parallel with the water pipes.
[0118] In the embodiments, each of the process plan creation systems 1, 100, and 200
creates a process plan of water pipe construction. Alternatively, the process plan creation
system may create documents including a construction management plan as well as the
15 process plan to be submitted to a waterworks organization. The process plan creation system
may visualize data to be managed during construction, such as a work table, a construction
management table, and an inventory management table. The process plan creation system
may automatically create a process table and a construction daily report. The process plan
creation system may automatically create documents after construction, such as an execution
20 timetable.
[0119] In the embodiments, each of the process plan creation systems 1, 100, and 200
creates a process plan in the case of performing water pipe construction by an excavation
technique for excavating the ground. Alternatively, the process plan creation system may
create a process plan in the case of performing water pipe construction by a non-excavation

32
technique used for, for example, arranging water pipes in a tunnel. In this case, the process
plan creation system creates a process plan based on a process suitable for water pipe
construction of the non-excavation technique.
[0120] In the second embodiment, the process plan creation system 200 modifies the
5 process plan of water pipe construction in accordance with an actual progress status of water
pipe construction. Alternatively, the process plan creation system may recommend staff and
work machines necessary for a target construction period. Such recommendation may be
performed by the process plan creation system according to the first embodiment.
10 INDUSTRIAL APPLICABILITY
[0121] The present teaching is applicable to a process plan creation system that creates a
process plan of water pipe construction.
REFERENCE MARKS IN THE DRAWINGS
15 [0122] 1, 100, 200 process plan creation system
11 information acquirer
15 plan controller
21 process time calculator
31 process plan creator
20 121 process time calculator
122 spare time corrector
241 progress status-related information acquirer
242 process plan modifier
W water pipe

33
L trench
M work machine
P sheet pile
R road
5 R1 surface layer
R2 upper subgrade
R3 lower subgrade
R4 roadbed

34
We Claim:
1. A water pipe construction process plan creation system that is a process plan
creation system that creates a process plan of water pipe construction, the process plan
5 creation system comprising:
an information acquirer that acquires water pipe-related information related to at
least one of a diameter, a length, a type, the number, or arrangement of water pipes used for
the water pipe construction;
a process time calculator that ca

We Claim:
1. A water pipe construction process plan creation system that is a process plan
creation system that creates a process plan of water pipe construction, the process plan
5 creation system comprising:
an information acquirer that acquires water pipe-related information related to at
least one of a diameter, a length, a type, the number, or arrangement of water pipes used for
the water pipe construction;
a process time calculator that calculates a process time including a work time of
10 each process of the water pipe construction based on the water pipe-related information
acquired by the information acquirer; and
a process plan creator that creates a process plan of at least a part of the water pipe
construction by using the process time of each process calculated by the process time
calculator.
15
2. The water pipe construction process plan creation system according to claim 1,
wherein
the information acquirer acquires water pipe construction-related information
related to the water pipe construction, in addition to the water pipe-related information, and
20 the process time calculator calculates the process time by using the water piperelated information and the water pipe construction-related information acquired by the
information acquirer.

35
3. The water pipe construction process plan creation system according to claim 2,
wherein
the water pipe construction-related information includes
on-ground-related information including information related to on5 ground of a place where the water pipes are buried, and
underground-related information including information related to
underground of the place where the water pipes are buried.
4. The water pipe construction process plan creation system according to claim 3,
10 wherein
the on-ground-related information includes
on-ground periphery-related information related to a periphery of onground of the place where the water pipes are buried, and
road situation-related information related to a road situation of the place
15 where the water pipes are buried.
5. The water pipe construction process plan creation system according to claim 3
or 4, wherein
the underground-related information includes information related to at least one of
20 an underground obstacle, a road structure, soil quality, or groundwater.
6. The water pipe construction process plan creation system according to any one
of claims 2 to 5, wherein
the process time calculator calculates a spare time in each process of the water pipe

36
construction based on the water pipe-related information and the water pipe constructionrelated information, and
the process plan creator creates a process plan of at least a part of the water pipe
construction in consideration of the spare time as well as the process time of each process.
5
7. The water pipe construction process plan creation system according to claim 6,
wherein
the process time calculator includes a spare time corrector that corrects the spare
time in each process of the water pipe construction based on past performance.
10
8. The water pipe construction process plan creation system according to any one
of claims 2 to 7, wherein
the information acquirer acquires construction suspension-related information
related to a date when no water pipe construction is performed, as the water pipe
15 construction-related information, and
the process plan creator creates a process plan of at least a part of the water pipe
construction by using the construction suspension-related information acquired by the
information acquirer and the process time of each process calculated by the process time
calculator.
20
9. The water pipe construction process plan creation system according to any one
of claims 1 to 8, further comprising:
a progress status-related information acquirer that acquires progress status-related
information related to a progress status of the water pipe construction; and

37
a process plan modifier that modifies the process plan created by the process plan
creator, by using the progress status-related information acquired by the progress statusrelated information acquirer.
5 10. A process plan creation method for creating a process plan of water pipe
construction, the process plan creation method comprising:
an information acquisition step of acquiring water pipe-related information related
to at least one of a diameter, a length, a type, the number, or arrangement of water pipes used
for the water pipe construction;
10 a process time calculation step of calculating a process time including a work time
of each process of the water pipe construction based on the water pipe-related information
acquired in the information acquisition step; and
a process plan creation step of creating a process plan of at least a part of the water
pipe construction by using the process time of each process calculated in the process time
15 calculation step.
11. A program for creating a process plan of water pipe construction, the
program causing a computer
to acquire water pipe-related information related to at least one of a diameter, a
20 length, a type, the number, or arrangement of water pipes used for the water pipe
construction; to calculate a process time including a work time of each process of the water pipe
construction based on the acquired water pipe-related information; and
to create a process plan of at least a part of the water pipe construction by using the
calculated process time of each process.