CONSIDERATIONS FOR WORK SCHEDULE AND COST ESTIMATION OF A BUILDING.

The following are phases of a building construction work to be considered in WBS, WORK SCHEDULE AND COST ESTIMATION.

A. SUBSTRUCTURE
1. Site Clearance
2. Top Soil Excavation
3. Excavation of foundation trench (Strip)
4. Levelling/Compacting Base of Excavation
5. Excavation of column base pit (pad)
6. Concrete Blinding
7. Concrete in foundation
8. Column base: Concrete, Reinforcement, formwork
9. Block work in foundation
10. Backfilling and Disposal
11. Filling of laterite
12. Filling of Hardcore
13. Stone Chippings/River sand
14. DPM in oversite concrete/German floor
15. BRC mesh Reinforcement
16. Concrete in floor

*optional: piping to extract water, anti-termite treatment etc.

PHASE B. FRAMEWORK
1. Columns: Concrete, Steel, formwork
2. Attached Beams: Concrete, Steel, formwork
3. Slabs: Concrete, Steel formwork
4. Shear Walls: Concrete, Steel, formwork
5. Staircase: Concrete, Steel, formwork

C. BLOCKWORK
1. Block in walls
2. Lintel: Concrete, Steel, formwork
3. RoofBeam: Concrete: Steel, formwork

D. ROOFING
1. Concrete fascia: Concrete, Steel, formwork
2. Roof Gutter: Concrete, Steel, formwork
3. *Wall plate (not compulsory)
4. Tie Beam
5. KingPost
6. Rafter
7. Struts
8. Purlins
9. Noggins
10. Roofing sheet
11. Eave angle, Valley piece, Ridge Capping, Fascial Flashing, etc

E. Waterproofing Works in Roof

F. FINISHES
1. Floor Screeding
2. Rendering: slab, staircase, columns
3. Tiles
4. Skirting
5. Wall Plastering
6. Wall tiles
7. Door/Window Jambs
8. POP Screening
9. POP Cornices
10. Windowhood
11. Wall Skirting
12. Crack Tiles
13. Balustrades/Railings

G. DOORS/WINDOWS
1. Door/Window Quantities
2. Burglary
3. Accessories

H. MECHANICAL INSTALLATIONS
I. ELECTRICAL INSTALLATIONS
J. AC INSTALLATIONS

K. PAINTING
1. Internal walls
2. Externally walls
3. Doors/Windows
4. Door/Window Jambs