Tender Summary: Construction of Disability OSS House

Objectives

The Dr Nkosazana Dlamini Zuma Municipality aims to appoint a qualified and experienced contractor to deliver a standardized, accessible residential structure designated as a Disability OSS House. The project targets completion within a three-month construction period, followed by a three-month liability period for defect rectification and warranty support.

Scope of Work

The contract covers the complete turnkey construction of a 45m² single-storey dwelling. Key deliverables include:

• Site establishment and earthworks/platform cutting.
• Reinforced concrete raft strip foundation and floor slab construction.
• Internal and external load-bearing blockwork with specified reinforcement and moisture barriers.
• Roof framing, sheeting, insulation, and ceiling installation.
• Supply and fitting of window frames, internal hollow-core doors, and external solid doors with security hardware.
• Construction of a perimeter concrete apron with engineered drainage gradients.
• Complete interior and exterior finishing, including plastering, painting, and flooring.
• Full electrical infrastructure, wiring, lighting, switchgear, and statutory certification.

Technical Requirements

All works must strictly comply with South African National Standards (SANS) and municipal engineering specifications:

• Foundation & Flooring: Reinforced concrete raft strip with edge thickening, steel float finish, and soil poisoning per National Building Regulations Part 5.
• Walls: 390x190x40mm pre-cast load-bearing blocks (min. 3.5MPa), Class II mortar (min. 5MPa on-site), continuous galvanized brick force reinforcement, damp-proof course (DPC) installation, and 10mm external cement plaster with wood float finish.
• Roof & Ceiling: Minimum 10-degree pitch using 0.47mm AZ150 G550 Zincal profile sheets, secured with hoop iron straps, 50mm aerolite insulation, and 6.0mm PVC tongue-and-groove ceiling panels.
• Doors & Windows: Cold-formed galvanised frames, unpainted Masonite hollow-core internal doors, and Meranti external doors fitted with 3-lever union lock sets.
• Apron: 1-meter wide, 75mm thick concrete slab with 15–20 MPa compressive strength, outward drainage gradient, and expansion joints spaced every 2.5 meters.
• Electrical Systems: Installation of specified copper cabling, LED indoor lighting, daylight-controlled CFL outdoor lighting, flush-mounted switches and sockets, and a 6-way surface-mounted distribution board. All installations must comply with the Occupational Health and Safety Act and SANS 10142, requiring a full circuit test report and legally binding Certificate of Compliance (COC).
• Pricing Basis: Labour rates are fixed at R185 per day for quotation calculations.

Skills and Qualification Requirements

Bidders must demonstrate proven capability and meet mandatory compliance criteria:

• CIDB grading of 1GB or higher.
• Valid Tax Clearance Certificate or SARS TCS PIN.
• Active registration with the Central Supplier Database (CSD).
• Proof of company registration (CIPC CK document) and certified IDs of all directors/members.
• Letter of reference verifying prior experience in building construction.
• Documentation proving the bidder and its directors have no outstanding municipal service debts.
• Completion of all mandatory Municipal Bidding Documents (MBD 1, 4, 6.1, 8, and 9).
• Compliance with the 80/20 preferential procurement system (80 points for price, 20 points for socio-economic goals such as local jurisdiction presence and designated ownership demographics).

Unusual or Complicated Terms/Services

• OSS House Designation: Refers to a specialized municipal housing model tailored for persons with disabilities, requiring enhanced structural durability, accessibility considerations, and compliance with specific municipal housing protocols beyond standard residential builds.
• CLO Provision: A fixed-price line item (R4,700) in the pricing schedule representing a specialized fixture, appliance, or municipal-specific requirement that must be procured and integrated into the build without additional cost claims.
• Municipal Debt Clearance: A strict disqualification criterion requiring bidders to submit updated utility statements, landlord confirmation letters, exemption certificates, or sworn affidavits proving no arrears in municipal rates or services.
• SANS 10142 Electrical Certification: Contractors bear full financial responsibility for testing all circuits, issuing formal compliance reports, and providing a statutory Certificate of Compliance, with zero additional charges permitted for defect rectification or non-compliance remediation.