How do site overheads skills gaps show up in a Somaliland bid?

A site overheads skills gap shows up as a thin bid line for supervision, testing and storage, not as a visible fault on day one. The estimator who strips out the clerk of works, the survey assistant or the cube tests leaves the work with nobody whose job is to check it.

What do site overheads actually pay for?

Site overheads pay for the people and facilities that do not appear in the finished wall: supervision, setting out, material storage, water, security, testing and record keeping. When a bidder has never run a supervised site, those items look optional. They price one mason gang, one foreman, no laboratory cubes and no independent level check. Ask the bidder to list the site team by role and the checks each role signs off. Ask for the storage plan for cement and rebar. A bid that cannot name who checks concrete cover or wall alignment is a bid where nobody does. Confirm what the specification requires for supervision and testing with the project engineer before you compare bids.

How does a thin overhead line become a site overheads skills gap?

The mechanism runs through the schedule. With one supervisor covering several trades, checks happen after the work is covered up. Concrete gets placed before the steel is inspected. Blockwork rises before the verticality is measured. Cement sits in the sun because nobody owns the store. Each gap on its own is small. Together they produce the defects that cost the most to fix: honeycombed concrete, leaning walls, delaminated plaster and rebar starting to corrode before the roof is on. A site with no planned testing can drift for weeks before anyone notices a strength problem. The delay before detection depends on how far the site is from testing and specialist services, so ask the bidder how samples and records will reach a laboratory.

How do you detect the gap before you award the work?

Detection happens at tender stage and on site, and both take an afternoon. At tender, read the overhead section line by line and ask what each item buys. Request the resourcing schedule, the testing schedule and the name of the laboratory that will test cubes. Ask how setting out will be checked against a benchmark and who signs the record. On site, walk a recent job by the same team. Look for a level book, cube records and a materials store with cement off the ground on pallets. Ask the municipal engineer's office which approvals apply to supervision or testing on your type of building, and ask the laboratory for its rate and turnaround in writing. A team that has the records will show them.

What to do next

Take the lowest three bids and write down the supervision and testing items each one includes. Send a short list of questions to each bidder: who supervises, who sets out, which laboratory tests the cubes and where materials are stored. Then check the project specification for the records required before work starts, and price the missing items back into the comparison before you decide.