WBS for BLDG 2023:
WBS |
Task Name |
1 |
Construction of Plant-Office-Warehouse |
1.1 |
Site preparation and utilities |
1.1.1 |
Site preparation |
1.1.1.1 |
Land Preparation |
1.1.1.2 |
Temporary Office |
1.1.2 |
Utilities |
1.1.2.1 |
Construction of well |
1.1.2.2 |
Construction of Overhead Tank (200 CuM capacity) |
1.1.2.3 |
Sewage Line |
1.1.2.4 |
Electric Supply |
1.1.2.4.1 |
Under Ground |
1.1.2.4.2 |
Above Ground |
1.2 |
Foundation and concrete work |
1.2.1 |
Piling work |
1.2.1.1 |
Plant |
1.2.1.2 |
Warehouse |
1.2.2 |
Spread Footing |
1.2.2.1 |
Office Building |
1.3 |
Structural Work for plant and Warehouse |
1.3.1 |
Plant |
1.3.1.1 |
Structural Column |
1.3.1.2 |
Roofing |
1.3.1.3 |
Crane & Beam Erection |
1.3.1.4 |
Siding work |
1.3.2 |
Warehouse |
1.3.2.1 |
Structural Column |
1.3.2.2 |
Roofing |
1.3.2.3 |
Monorail & Beam erection |
1.3.2.4 |
Siding work |
1.4 |
Interior work for the plant and Warehouse |
1.4.1 |
Plant |
1.4.1.1 |
HVAC |
1.4.1.2 |
Lighting work |
1.4.1.3 |
Flooring |
1.4.1.4 |
Partition work |
1.4.1.5 |
Railroad Siding |
1.4.2 |
Warehouse |
1.4.2.1 |
HVAC |
1.4.2.2 |
Lighting work |
1.4.2.3 |
Flooring |
1.4.2.4 |
Partition work |
1.5 |
The structure and interior work for the office building |
1.5.1 |
Structure work |
1.5.2 |
Interior work |
1.6 |
Site Amenities |
1.6.1 |
Parking |
1.6.2 |
Flagpole |
1.7 |
Handover, practical completion and demobilization |
List of Activities:
WBS |
Task Name |
1 |
Construction of Plant-Office-Warehouse |
1.1 |
Site preparation and utilities |
1.1.1 |
Site preparation |
1.1.1.1 |
Land Preparation |
1.1.1.1.1 |
Start Site Preparation work |
1.1.1.1.2 |
Cleaning of site from rubbish timber and bushes |
1.1.1.1.3 |
Surveying for plotting site contour |
1.1.1.1.4 |
Leveling (Cutting & Filling) to maintain slope as per design |
1.1.1.2 |
Temporary Office |
1.1.1.2.1 |
Erect Pre-Fabricated Frames |
1.1.1.2.2 |
Erect Pre-Fabricated Roof |
1.1.1.2.3 |
Flooring |
1.1.1.2.4 |
Office Internal work including Sanitary Lines |
1.1.1.2.5 |
Air Conditioning system |
1.1.2 |
Utilities |
1.1.2.1 |
Construction of well |
1.1.2.1.1 |
Apply and obtain administrative approval |
1.1.2.1.2 |
Boring |
1.1.2.1.3 |
Installation of pump |
1.1.2.1.4 |
Water testing |
1.1.2.1.5 |
Ready to use Well |
1.1.2.2 |
Construction of Overhead Tank (200 CuM capacity) |
1.1.2.2.1 |
Fix Frame / Structure on which tank shall rest |
1.1.2.2.2 |
Erect tanks of above capacity |
1.1.2.2.3 |
Fix all necessary plumbing lines |
1.1.2.3 |
Sewage Line |
1.1.2.3.1 |
Excavation in trapezoidal section throughout the layout of sewage line |
1.1.2.3.2 |
Earth filling to maintain proper slop as per design |
1.1.2.3.3 |
Laying of Sewage Pipeline |
1.1.2.3.4 |
Backfilling & proper Compaction as per standard |
1.1.2.4 |
Electric Supply |
1.1.2.4.1 |
Under Ground |
1.1.2.4.1.1 |
Excavation for Pole foundation, Manhole & Duct |
1.1.2.4.1.2 |
Construct Electrical Manhole 1 |
1.1.2.4.1.3 |
Construct Electrical Manhole 2 |
1.1.2.4.1.4 |
Cast & Place Electric Duct Bank |
1.1.2.4.1.5 |
Backfill Sand / Earth after Cable laying |
1.1.2.4.2 |
Above Ground |
1.1.2.4.2.1 |
Erect Power Incoming Poles |
1.1.2.4.2.2 |
Laying of cables |
1.1.2.4.2.3 |
Finish Site preparation and utilities work |
1.2 |
Foundation and concrete work |
1.2.1 |
Piling work |
1.2.1.1 |
Plant |
1.2.1.1.1 |
Start Foundation & Concrete work |
1.2.1.1.2 |
Boring (5 Nos.) up to 10 meter depth at every 15 meter c/c distance |
1.2.1.1.3 |
Piling (5 Nos.) of 10 meter depth at every 15 meter c/c distance |
1.2.1.1.4 |
Breaking of Pile head |
1.2.1.1.5 |
Bar Bending and fixing of Reinforcement for Plinth Beam |
1.2.1.1.6 |
Fixing Formwork |
1.2.1.1.7 |
Casting of Plinth beam |
1.2.1.1.8 |
Backfilling & Compaction |
1.2.1.2 |
Warehouse |
1.2.1.2.1 |
Boring (2 Nos.) up to 10 meter depth at every 15 meter c/c distance |
1.2.1.2.2 |
Piling (2 Nos.) of 10 meter depth at every 15 meter c/c distance |
1.2.1.2.3 |
Breaking of Pile head |
1.2.1.2.4 |
Bar Bending and fixing of Reinforcement for Plinth Beam |
1.2.1.2.5 |
Fixing Formwork |
1.2.1.2.6 |
Casting of Plinth beam |
1.2.1.2.7 |
Backfilling & Compaction |
1.2.2 |
Spread Footing |
1.2.2.1 |
Office Building |
1.2.2.1.1 |
Excavation for spread footing |
1.2.2.1.2 |
Pour lean concrete for leveling |
1.2.2.1.3 |
Reinforcement bending & Fixing |
1.2.2.1.4 |
Fixing Formwork |
1.2.2.1.5 |
Casting of footing |
1.2.2.1.6 |
Backfilling & Compaction |
1.2.2.1.7 |
Finish Foundation & Concrete work |
1.3 |
Structural Work for plant and Warehouse |
1.3.1 |
Plant |
1.3.1.1 |
Structural Column |
1.3.1.1.1 |
Start Structural Work for plant and Warehouse |
1.3.1.1.2 |
Erection of column at every 15 meter |
1.3.1.1.3 |
Alignment & Bolting column with Foundation |
1.3.1.2 |
Roofing |
1.3.1.2.1 |
Erection of Joist Steel Bars |
1.3.1.2.2 |
Placing Pre-Cast concrete Planks above Steel Bars |
1.3.1.2.3 |
Fix roofing sheet |
1.3.1.3 |
Crane & Beam Erection |
1.3.1.3.1 |
Erection of Girder above structural column from one end of plant to other |
1.3.1.3.2 |
Placing Crane Hoist above girder |
1.3.1.3.3 |
Arranging other miscellaneous work related to crane assembly |
1.3.1.3.4 |
Erection of Beam for Piping |
1.3.1.4 |
Siding work |
1.3.1.4.1 |
Fix insulated glass panel at top |
1.3.1.4.2 |
Fix insulated opaque panels at middle and bottom |
1.3.2 |
Warehouse |
1.3.2.1 |
Structural Column |
1.3.2.1.1 |
Erection of column at every 15 meter |
1.3.2.1.2 |
Alignment & Bolting column with Foundation |
1.3.2.2 |
Roofing |
1.3.2.2.1 |
Erection of Joist Steel Bars |
1.3.2.2.2 |
Placing Pre-Cast concrete Planks above Steel Bars |
1.3.2.2.3 |
Fix roofing sheet |
1.3.2.3 |
Monorail & Beam erection |
1.3.2.3.1 |
Erection of Monorail above structural column from one end of plant to other |
1.3.2.4 |
Siding work |
1.3.2.4.1 |
Fix insulated glass panel at top |
1.3.2.4.2 |
Fix insulated opaque panels at middle and bottom |
1.4 |
Interior work for the plant and Warehouse |
1.4.1 |
Plant |
1.4.1.1 |
HVAC |
1.4.1.1.1 |
Start Interior work for the plant and Warehouse |
1.4.1.1.2 |
Erect and install HVAC ducts with ceiling |
1.4.1.2 |
Lighting work |
1.4.1.2.1 |
Install & fix fluorescent light fixtures |
1.4.1.3 |
Flooring |
1.4.1.3.1 |
Compaction of sand below flooring level |
1.4.1.3.2 |
Cast Concrete Floor Slab |
1.4.1.4 |
Partition work |
1.4.1.4.1 |
Erect Concrete Block as partition wall to Construct Lunch area, Toilet, Locker room & Shop offices |
1.4.1.5 |
Railroad Siding |
1.4.1.5.1 |
Placing / Install railroad siding |
1.4.2 |
Warehouse |
1.4.2.1 |
HVAC |
1.4.2.1.1 |
Erect and install HVAC ducts with ceiling |
1.4.2.2 |
Lighting work |
1.4.2.2.1 |
Install & fix fluorescent light fixtures |
1.4.2.3 |
Flooring |
1.4.2.3.1 |
Compaction of sand below flooring level |
1.4.2.3.2 |
Cast Concrete Floor Slab |
1.4.2.4 |
Partition work |
1.4.2.4.1 |
Erect Concrete Block as partition wall to Construct Warehouse office, Boiler area, Bin storage, Oil Tank & Load Center |
1.4.2.4.2 |
Finish Interior work for the plant and Warehouse |
1.5 |
The structure and interior work for the office building |
1.5.1 |
Structure work |
1.5.1.1 |
Start structure and interior work for the office building |
1.5.1.2 |
Erect Pre-Cast Concrete structure |
1.5.1.3 |
Build masonry wall |
1.5.1.4 |
Erect Pre-Cast Planks as roof |
1.5.1.5 |
Place & Fix single-ply over planks |
1.5.2 |
Interior work |
1.5.2.1 |
Erect Hung Ceiling |
1.5.2.2 |
Erect dry wall with metal stud as partition between Reception, Business Office and Offices |
1.5.2.3 |
Install air conditioning unit |
1.5.2.4 |
Finish structure and interior work for the office building |
1.6 |
Site Amenities |
1.6.1 |
Parking |
1.6.1.1 |
Start Site Amenities work |
1.6.1.2 |
Build Parking Area at North of Plant and West of Office |
1.6.2 |
Flagpole |
1.6.2.1 |
Construct Flag pole area |
1.6.2.2 |
Finish Site Amenities work |
1.7 |
Handover, practical completion and demobilization |
Relationship between the activities with duration:
Activity ID |
Task Name |
Duration |
Predecessors |
Successors |
1 |
Construction of Plant-Office-Warehouse |
300 days |
||
2 |
Site preparation and utilities |
40 days |
||
3 |
Site preparation |
15 days |
||
4 |
Land Preparation |
9 days |
||
5 |
Start Site Preparation work |
0 days |
6,17 |
|
6 |
Cleaning of site from rubbish timber and bushes |
3 days |
5 |
7,23 |
7 |
Surveying for ploting site contour |
1 day |
6 |
8 |
8 |
Leveling (Cutting & Filling) to maintain slope as per design |
5 days |
7 |
10FF,27,34 |
9 |
Temporary Office |
10 days |
||
10 |
Erect Pre-Fabricated Frames |
4 days |
8FF |
11FF+3 days |
11 |
Erect Pre-Fabricated Roof |
6 days |
10FF+3 days |
12FF+1 day |
12 |
Flooring |
3 days |
11FF+1 day |
13FF,14 |
13 |
Office Internal work including Sanitary Lines |
5 days |
12FF |
|
14 |
Air Conditioning system |
2 days |
12 |
|
15 |
Utilities |
40 days |
||
16 |
Construction of well |
10 days |
||
17 |
Apply and obtain administrative approval |
6 days |
5 |
18 |
18 |
Boring |
2 days |
17 |
19 |
19 |
Installation of pump |
1 day |
18 |
20 |
20 |
Water testing |
1 day |
19 |
21 |
21 |
Ready to use Well |
0 days |
20 |
|
22 |
Construction of Overhead Tank (200 CuM capacity) |
12 days |
||
23 |
Fix Frame / Structure on which tank shall rest |
4 days |
6 |
24 |
24 |
Erect tanks of above capacity |
2 days |
23 |
25 |
25 |
Fix all necessary plumbing lines |
6 days |
24 |
|
26 |
Sewage Line |
15 days |
||
27 |
Excavation in trapezoidal section throughout the layout of sewage line |
2 days |
8 |
28 |
28 |
Earth filling to maintain proper slop as per design |
4 days |
27 |
29 |
29 |
Laying of Sewage Pipeline |
6 days |
28 |
30 |
30 |
Backfilling & proper Compaction as per standard |
3 days |
29 |
33FF |
31 |
Electric Supply |
31 days |
||
32 |
Under Ground |
31 days |
||
33 |
Excavation for Pole foundation, Manhole & Duct |
3 days |
30FF |
36,39 |
34 |
Construct Electrical Manhole 1 |
6 days |
8 |
35FF |
35 |
Construct Electrical Manhole 2 |
6 days |
34FF |
|
36 |
Cast & Place Electric Duct Bank |
12 days |
33 |
|
37 |
Backfill Sand / Earth after Cable laying |
2 days |
40 |
41 |
38 |
Above Ground |
16 days |
||
39 |
Erect Power Incoming Poles |
3 days |
33 |
40 |
40 |
Laying of cables |
11 days |
39 |
37 |
41 |
Finish Site preparation and utilities work |
0 days |
37 |
45FS+1 day |
42 |
Foundation and concrete work |
55 days |
||
43 |
Piling work |
55 days |
||
44 |
Plant |
55 days |
||
45 |
Start Foundation & Concrete work |
0 days |
41FS+1 day |
46 |
46 |
Boring (5 Nos.) up to 10 meter depth at every 15 meter c/c distance |
43 days |
45 |
47FF+5 days,54SS |
47 |
Piling (5 Nos.) of 10 meter depth at every 15 meter c/c distance |
43 days |
46FF+5 days |
48FF+3 days |
48 |
Breaking of Pile head |
25 days |
47FF+3 days |
49FF+4 days |
49 |
Bar Bending and fixing of Reinforcement for Plinth Beam |
30 days |
48FF+4 days |
50SS+3 days |
50 |
Fixing Formwork |
20 days |
49SS+3 days |
51 |
51 |
Casting of Plinth beam |
4 days |
50 |
52 |
52 |
Backfilling & Compaction |
3 days |
51 |
69 |
53 |
Warehouse |
31 days |
||
54 |
Boring (2 Nos.) up to 10 meter depth at every 15 meter c/c distance |
17 days |
46SS |
55FF+5 days,63SS |
55 |
Piling (2 Nos.) of 10 meter depth at every 15 meter c/c distance |
17 days |
54FF+5 days |
56FF+3 days |
56 |
Breaking of Pile head |
10 days |
55FF+3 days |
57FF+4 days |
57 |
Bar Bending and fixing of Reinforcement for Plinth Beam |
12 days |
56FF+4 days |
58SS+3 days |
58 |
Fixing Formwork |
8 days |
57SS+3 days |
59 |
59 |
Casting of Plinth beam |
2 days |
58 |
60 |
60 |
Backfilling & Compaction |
1 day |
59 |
69 |
61 |
Spread Footing |
55 days |
||
62 |
Office Building |
55 days |
||
63 |
Excavation for spread footing |
10 days |
54SS |
64FF+2 days |
64 |
Pour lean concrete for leveling |
5 days |
63FF+2 days |
65SS+1 day |
65 |
Reinforcement bending & Fixing |
26 days |
64SS+1 day |
66FF+2 days |
66 |
Fixing Formwork |
20 days |
65FF+2 days |
67FF+1 day |
67 |
Casting of footing |
3 days |
66FF+1 day |
68FF+2 days |
68 |
Backfilling & Compaction |
3 days |
67FF+2 days |
69 |
69 |
Finish Foundation & Concrete work |
0 days |
68,60,52 |
73FS+1 day |
70 |
Structural Work for plant and Warehouse |
40 days |
||
71 |
Plant |
40 days |
||
72 |
Structural Column |
18 days |
||
73 |
Start Structural Work for plant and Warehouse |
0 days |
69FS+1 day |
74 |
74 |
Erection of column at every 15 meter |
18 days |
73 |
75FF,90FF |
75 |
Alignment & Bolting column with Foundation |
15 days |
74FF |
77FF+3 days,81FF+6 days |
76 |
Roofing |
21 days |
||
77 |
Erection of Joist Steel Bars |
16 days |
75FF+3 days |
78FF+4 days |
78 |
Placing Pre-Cast concrete Planks above Steel Bars |
14 days |
77FF+4 days |
79FF+1 day |
79 |
Fix roofing sheet |
12 days |
78FF+1 day |
86FF,104FS+3 days |
80 |
Crane & Beam Erection |
40 days |
||
81 |
Erection of Girder above structural column from one end of plant to other |
24 days |
75FF+6 days |
82,84FF+2 days |
82 |
Placing Crane Hoist above girder |
10 days |
81 |
83FF+6 days |
83 |
Arranging other miscellaneous work related to crane assembly |
9 days |
82FF+6 days |
|
84 |
Erection of Beam for Piping |
6 days |
81FF+2 days |
|
85 |
Siding work |
18 days |
||
86 |
Fix insulated glass panel at top |
16 days |
79FF |
87FF+2 days |
87 |
Fix insulated opaque panels at middle and bottom |
14 days |
86FF+2 days |
|
88 |
Warehouse |
19 days |
||
89 |
Structural Column |
8 days |
||
90 |
Erection of column at every 15 meter |
8 days |
74FF |
91FF |
91 |
Alignment & Bolting column with Foundation |
5 days |
90FF |
93FF+3 days,97FF+10 days |
92 |
Roofing |
17 days |
||
93 |
Erection of Joist Steel Bars |
12 days |
91FF+3 days |
94FF+4 days |
94 |
Placing Pre-Cast concrete Planks above Steel Bars |
8 days |
93FF+4 days |
95FF+1 day |
95 |
Fix roofing sheet |
6 days |
94FF+1 day |
99FF |
96 |
Monorail & Beam erection |
14 days |
||
97 |
Erection of Monorail above structural column from one end of plant to other |
14 days |
91FF+10 days |
|
98 |
Siding work |
10 days |
||
99 |
Fix insulated glass panel at top |
8 days |
95FF |
100FF+2 days |
100 |
Fix insulated opaque panels at middle and bottom |
7 days |
99FF+2 days |
|
101 |
Interior work for the plant and Warehouse |
75 days |
||
102 |
Plant |
75 days |
||
103 |
HVAC |
60 days |
||
104 |
Start Interior work for the plant and Warehouse |
0 days |
79FS+3 days |
105 |
105 |
Erect and install HVAC ducts with ceiling |
60 days |
104 |
107,109SS,114SS,117SS |
106 |
Lighting work |
15 days |
||
107 |
Install & fix fluorescent light fixtures |
15 days |
105 |
125 |
108 |
Flooring |
37 days |
||
109 |
Compaction of sand below flooring level |
25 days |
105SS |
110 |
110 |
Cast Concrete Floor Slab |
12 days |
109 |
112 |
111 |
Partition work |
25 days |
||
112 |
Erect Concrete Block as partition wall to Construct Lunch area, Toilet, Locker room & Shop offices |
25 days |
110 |
|
113 |
Railroad Siding |
45 days |
||
114 |
Placing / Install railroad siding |
45 days |
105SS |
|
115 |
Warehouse |
75 days |
||
116 |
HVAC |
30 days |
||
117 |
Erect and install HVAC ducts with ceiling |
30 days |
105SS |
119,121SS |
118 |
Lighting work |
8 days |
||
119 |
Install & fix fluorescent light fixtures |
8 days |
117 |
|
120 |
Flooring |
19 days |
||
121 |
Compaction of sand below flooring level |
13 days |
117SS |
122 |
122 |
Cast Concrete Floor Slab |
6 days |
121 |
124 |
123 |
Partition work |
56 days |
||
124 |
Erect Concrete Block as partition wall to Construct Warehouse office, Boiler area, Bin storage, Oil Tank & Load Center |
13 days |
122 |
|
125 |
Finish Interior work for the plant and Warehouse |
0 days |
107 |
128FS+1 day |
126 |
The structure and interior work for the office building |
65 days |
||
127 |
Structure work |
48 days |
||
128 |
Start structure and interior work for the office building |
0 days |
125FS+1 day |
129 |
129 |
Erect Pre-Cast Concrete structure |
26 days |
128 |
130SS+5 days,131 |
130 |
Build masonry wall |
18 days |
129SS+5 days |
131 |
131 |
Erect Pre-Cast Planks as roof |
14 days |
129,130 |
132,134 |
132 |
Place & Fix single-ply over planks |
8 days |
131 |
135 |
133 |
Interior work |
25 days |
||
134 |
Erect Hung Ceiling |
12 days |
131 |
136 |
135 |
Erect dry wall with metal stud as partition between Reception, Business Office and Offices |
17 days |
132 |
137 |
136 |
Install air conditioning unit |
6 days |
134 |
|
137 |
Finish structure and interior work for the office building |
0 days |
135 |
140FS+1 day |
138 |
Site Amenities |
25 days |
||
139 |
Parking |
25 days |
||
140 |
Start Site Amenities work |
0 days |
137FS+1 day |
141 |
141 |
Build Parking Area at North of Plant and West of Office |
25 days |
140 |
143FF,144 |
142 |
Flagpole |
15 days |
||
143 |
Construct Flag pole area |
15 days |
141FF |
144 |
144 |
Finish Site Amenities work |
0 days |
141,143 |
145 |
145 |
Handover, practical completion and demobilization |
7 days |
144 |
While developing the above activities in MS Project, first we need to develop the Calendar (office, 2017) as per site requirement as below:
Working time: 07:00 to 19:00 Hrs
Working Days: Monday to Saturday
Weekly Off: Sunday
Public Holidays: Non-Working days (Australia. Australian Government, 2017)
Attach below the overall Gantt chart for the construction of Plant – Office – Warehouse complex .
After assigning resource name ‘Worker’ as the only type of resource required to complete the work package ‘Site preparation and utilities’, the resource histogram obtained as below:
From the above histogram, it is clear that we cannot work with only 1 resource per day, so more number of workers is required.
RIC (before leveling): (waste, 2017)
n= 40 days, R= say at 14th June it is 7 Nos., likewise
RIC = [40 x 435] ÷ [109 x 109]
= 17400 ÷ 11881 = 1.46
RUF (before leveling): (citehr, 2017))
RUF = Total used Resource ÷ Total Available
= 109 ÷ (40 x 20)
= 109 ÷ 800 = 0.14
Even though the available resource is more than required, the affect after leveling with respect to the available resources
References:
Workbreakdownstructure (2017). Work Breakdown Structure (WBS). [Online]. Available at: https://www.workbreakdownstructure.com/ (Accessed 29 May 2017).
Gantt (2017). What is a Gantt Chart? [Online]. Available at: https://www.gantt.com/ (Accessed 29 May 2017).
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