How do you review a low bid in Qardho?

How do you review a low bid in Qardho?

Rebuild the arithmetic before you compare totals. A bid for work in Qardho is only as good as the take-off behind it. Ask for the priced bill of quantities, the unit rates and the method statement, then check that each rate covers materials, labour, plant, curing and supervision for the actual site. A low total on its own tells you nothing about whether the bid arithmetic underbidding risks in Qardho are hidden in a missing line or in a rate that cannot buy the work.

Where does the arithmetic stop matching the work?

Low bids usually fail at the same points. An estimator working without local quotes may price materials from memory, then leave out curing water, compaction passes, formwork reuse limits or the cost of keeping a supervisor on site for the weather the programme will actually meet, to be confirmed against the project record. Check the bill line by line and ask for the source of each main rate. Where the bid shows no allowance for a curing period, water carting, testing or a resident supervisor, the client will meet that cost later. Ask the contracting authority or the engineer which records it can make available for similar works, and walk a recent site to see how curing and compaction were actually done. Never compare two totals until both bills carry the same scope and the same provisional sums.

What does a low rate do to the work?

A rate that cannot cover the method changes the method. Crews shorten curing, place lifts too thick, skip compaction passes or leave formwork in place too long because there is no time or money to strike it safely. On a building in Qardho, the first signs are honeycombed concrete, dusting floors, cracked render and water tank supports that move once filled. The defect may appear after the retention period ends, so the client pays twice. Ask the bidder to explain how the rate covers the method statement. If the answer is that the crew will manage, ask what they will manage with: hours, water, plant and a named supervisor. Curing duration and layer thickness follow the project’s specification and the engineer’s direction.

How do you close the gap before award?

Fix the arithmetic before you sign. Ask each bidder for a priced bill with quantities, unit rates, labour hours and a supervision line, then compare only like with like. Where a rate looks thin, ask for the build-up in writing and for two supplier quotes on the main materials. Check whether the contract allows you to require a revised bill, a performance bond or a retention before award. Do not withhold payment or decide liability yourself; the contract and the engineer’s decision govern that. If a bidder cannot show the build-up, treat the bid as incomplete rather than cheap, and engage a qualified quantity surveyor of your own to review the take-off.

What to do next

Take the lowest bid and rebuild its arithmetic on one page: quantities, rates, labour hours, plant, curing and supervision. Ask that bidder for the written build-up and two supplier quotes on the main materials. If the build-up does not cover the method statement, request a revised bill before you recommend award.