ANWSER
Question 1:
(a) List and Explain Ten (12) Preliminaries Items
1. Site Establishment: Costs for setting up site offices, storage, and temporary facilities.
2. Temporary Services: Provision of water, electricity, and sanitation during construction.
3. Site Security: Fencing, guards, and surveillance to protect materials and equipment.
4. Health and Safety Measures: PPE, signage, and safety training for workers.
5. Insurance: Public liability, contractor’s all-risk, and employer’s liability insurance.
6. Plant and Equipment: Cost of hiring or purchasing machinery like excavators or cranes.
7. Site Clearance: Removal of debris, vegetation, and existing structures.
8. Professional Fees: Fees for consultants (e.g., engineers, surveyors).
9. Testing and Inspections: Soil tests, material quality checks, and compliance inspections.
10. Temporary Roads: Access roads for construction vehicles.
11. Environmental Protection: Dust control, noise barriers, and erosion measures.
12. Preliminary Overheads: Administrative costs, permits, and licenses.
(b) Price any Five (4) Listed Preliminaries Items
1. Site Security:
– Fencing: N500,000
– Guards (2 months): N300,000
– Total: N800,000
2. Health and Safety Measures:
– PPE for 10 workers: N150,000
– Safety training: N100,000
– Total: N250,000
3. Temporary Services:
– Generator hire: N200,000
– Water supply: N50,000
– Total: N250,000
4. Site Clearance:
– Labor (10 workers × 40 hours): N96,000
– Equipment hire: N120,000
– Total: N216,000
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Question 2:
Steps of the Design Sequence Prior to Tender Invitation and QS Role:
1. Feasibility Study: QS estimates costs to assess project viability.
2. Concept Design: QS provides preliminary cost advice.
3. Detailed Design: QS prepares BOQ and cost plans.
4. Tender Documentation: QS finalizes BOQ and ensures clarity for contractors.
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Question 3:
(a) BOQ as Tender vs. Contract Document:
– Tender Document: Basis for contractors to price works (competitive).
– Contract Document: Legal reference for payments/variations (binding).
(b) Components of BOQ:
1. Preliminaries
2. Measured Work Sections
3. Provisional Sums
4. Contingencies
5. Summary.
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Question 4:
Contractor’s Pre-Tender Procedures:
1. Review tender documents.
2. Site visit/inspection.
3. Material/labor cost estimation.
4. Risk assessment.
5. Finalize and submit tender.
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Question 5 & 6: *(Requires BOQ attachment for Items B/N rates; omitted due to incomplete data.)*
Question 7:
(a) Tendering Beyond Buying/Selling: Involves risk analysis, legal compliance, and long-term relationships.
(b) Tendering Procedures:
1. Advertisement
2. Pre-qualification
3. Tender submission
4. Evaluation
5. Award.
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