WBS for BLDG 2023

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 14^th 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).

Office (2017). Set the general working days and times for a project. [Online]. Available at: https://support.office.com/en-us/article/Set-the-general-working-days-and-times-for-a-project-c4587751-2b88-449d-87e5-d3312d16771d (Accessed 29 May 2017).

Australia. Australian Government (2017). Public holidays. [Online]. Available at: https://www.australia.gov.au/about-australia/special-dates-and-events/public-holidays (Accessed 29 May 2017).

Citehr (2017). Calculation Utilization Rate For Human Resources. [Online]. Available at: https://www.citehr.com/156245-calculation-utilization-rate-human-resources.html (Accessed 29 May 2017).

Waste (2017). Resource Leveling in Construction Projects using Re- Modified Minimum Moment Approach. [Online]. Available at: https://waset.org/publications/8655/resource-leveling-in-construction-projects-using-re-modified-minimum-moment-approach (Accessed 29 May 2017).

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