Supply and delivery of concrete admixtures for clanwilliam dam raising project (48 months)

Supply and delivery of concrete admixtures for the raising of Clanwilliam Dam over a 48-month period. Includes providing dosing equipment and delivering admixtures on demand to the construction site. Contract is based on NTGCC (National Treasury General Conditions of Contract, July 2010).

Compulsory briefing session: 14 July 2026 at 10:00am, Clanwilliam Dam site (Contractors Office Boardroom, GPS: 32°11'11.14"S, 18°52'12.33"E; boom gate GPS: 32°11'46.81"S, 18°52'38.79"E). Closing date for tenders: 31 July 2026 at 11:00am. Tender validity period: 120 days. Addenda issued up to 4 working days before closing. Clarification requests accepted up to 7 working days before closing.

Bid enquiries: Department of Water and Sanitation, Bid Enquiries Office, Phone: 012 336 8241/8151/6562, Email: [email protected]. Technical enquiries: TD Montso, Email: [email protected]. Submission address: Bid Box at the Entrance, Zwamadaka Building, 157 Francis Baard Street, Pretoria, 0001.

Submit bids by 11:00 on 31 July 2026. Late, emailed, faxed, or telephonic submissions are not accepted. Deliver to: Bid Box at the Entrance, Zwamadaka Building, 157 Francis Baard Street, Pretoria, 0001, or via postal address: Private Bag X313, Pretoria, 0001. Submit one original hard copy + one PDF soft copy on a USB flash drive. All returnable documents (SBD1, SBD3.2, SBD4, SBD6.1, Annexures A-S) must be completed, signed, and included. Failure to submit any required document or initial the entire tender document will disqualify the bid. Only official tender forms are accepted; do not re-type. Ensure the bid is signed by an authorized representative with proof of authority (e.g., company resolution).

Supply and deliver concrete admixtures for the Clanwilliam Dam raising project over 48 months. Deliver admixtures per request and on time to the construction site. Provide dosing equipment. Admixtures must meet technical specifications for IVRCC and conventional concrete mixes. Key parameters: Slump (0-5mm for IVRCC, 40-80mm for conventional), VeBe time (12-27 seconds), compaction factor (0.85-0.90), water-cement ratio (0.5-0.7), and compressive strength (20-25MPA at 28 days). Set retarding admixtures for IVRCC must achieve initial set >15 hours and final set <40 hours (ASTM C403). Workability (SANS 5862-1:2006), compressive strength (SANS 5863:2006), VeBe test (SANS 5862-3:2006), and air content (SANS 6252:2006) must be tested at a SANAS-accredited lab. Bidders must replicate the client’s mix design and submit test results with their tender.

Pricing must be in South African Rand (ZAR). Submit unit price per litre and total estimated cost for the admixture based on calculated dosage. Cost-effectiveness formula: Total Cost = Unit Price per Litre × (Dosage per m³ × Quantity of Concrete in m³). No alternative offers accepted. Financial arrangements: If not the manufacturer, submit proof of credit account (supplier letter), cash account (bank statement <6 months old), or letter of intent (10% of bid value) from an accredited financial institution. Alternatively, provide financial statements showing annual turnover ≥10% of bid value for the past two years. Submit a letter from the manufacturer/supplier confirming supply arrangements.

Mandatory: Registered on Central Supplier Database (CSD). Tax compliant (SARS TCS PIN or proof of arrangements). CIPC registration (submit certificate). Compensation Fund/COID registration (submit Letter of Good Standing). B-BBEE Status Level 1-2 (QSE/EME) for preference points (submit verification certificate or sworn affidavit). Complete and submit: SBD1, SBD3.2, SBD4, SBD6.1, Annexures A (attendance certificate), B (compliance with specs), C (financial arrangements), D (manufacturer supply letter), E (addenda record), F (amendments), G (preferencing schedule), H (B-BBEE certificate), I (municipal declaration), J (CIPC certificate), K (compulsory declaration), L (signatory authority), M (tax compliance), N (CSD registration), O (subcontractor schedule), P (COID proof), Q (mix design), R (form of offer), S (contract data). Attend compulsory site briefing (sign attendance register + submit Annexure A). No conflicts of interest or tender defaulter listings.