In brief
- A bid that prices material at drawn quantities with no waste allowance will run short once breakage, cutting loss and handling damage are counted.
- Breakage and cutting loss are real costs on any site, so the estimator must price the allowance and the client must see it in the build-up.
- Closure comes from requiring an unpriced material schedule at tender stage and checking the priced build-up against it.
Contents
A low bid in Berbera often looks low because the estimate prices material at drawn quantities with no allowance for waste. Cutting, breakage and handling damage during unloading and stacking are real on any site, so the material runs short before the work is finished. The gap between a bid with no waste allowance and a bid that carries one is where underbidding risk hides, and it shows up as stalled work rather than as a saving.
Where does the gap between drawn quantities and delivered material come from?
Every take-off gives the net quantity fixed in the drawing, and every site delivers more than that to finish the job. Block and brick work loses material to cutting at corners, openings and services. Tiles and sheet materials lose material to cutting around edges, columns and outlets. Cement and aggregate lose material to spillage, over-mixing and washout. Rebar loses material to cutting lengths and to offcuts that cannot be used elsewhere.
A bid that carries only the net quantity in its material budget will run out. The mechanism is simple: the priced quantity is correct on paper and wrong on site. Hot, windy conditions can increase losses from dust, evaporation and brittle handling, and coastal humidity and salt can damage stored material, but the exact waste rate depends on the trade, the material and how the site is run. Ask a recent site in Berbera what it actually ordered against what it fixed, and check the delivery notes to see the difference.
How does an insufficient material budget show up on a Berbera build?
The shortfall rarely appears as an open admission; it appears as a slowdown. The crew stops laying blocks because the block count is short, or stops tiling because the tile batch has run out. The contractor then asks for a variation, a substitution or a top-up payment, and the client has no line in the contract to point at.
Supervision can catch this before it bites. Compare the priced material schedule in the bid against the quantities in the drawings and against what the contractor has actually ordered. If the two figures are the same, or the ordered figure is below the drawn figure, the allowance is missing. That is the clearest sign of an insufficient material budget. The contract should say how extra material is priced and who carries the risk if the allowance was omitted. Ask the contracting party to confirm what the contract allows before agreeing any top-up.
How do you check waste allowances before awarding a contract in Berbera?
Ask for the unpriced material schedule first. It separates material type from unit rate, so you can see whether waste is carried as a separate line or buried in the rate. A priced schedule with one lump sum gives no way to check the allowance.
Then ask these questions in writing:
- Which trade, material and unit carries a waste allowance, and what rate is applied?
- Is breakage, cutting loss and handling damage priced separately, or folded into the supply rate?
- What evidence from a previous job shows the ordered quantity against the fixed quantity?
Finally, request delivery notes and stock records from a recent comparable job the same team finished, and walk a current site to see how material is stacked, covered and cut. Coastal humidity and salt can damage stored rebar and cement, so storage method affects how much material remains usable. Confirm the waste allowance against the project specification or the engineer's direction.
What to do next
Send the tenderer a written request for an unpriced material schedule plus the waste allowance for each trade, and ask for delivery notes from a recent job showing ordered against fixed quantities. Before award, walk one current site and check how blocks, tiles and rebar are cut and stored. Raise any gap with the contracting party and record the answer.
Frequently asked questions
What is a normal waste allowance for blocks or tiles in Somaliland?
General practice uses a cutting and breakage allowance quoted as a percentage of net quantity, but the right figure depends on the unit size, the cutting pattern and the site. Ask the tenderer to state its rate and show how it was calculated, then confirm the figure against the project specification or the engineer's direction.
Can a client recover the cost after awarding a low bid?
That depends on what the contract says about omitted allowances and variations. Check the payment and variation clauses before agreeing any top-up, and ask the contracting party or a legal adviser what the contract allows.
Does hot weather make waste worse in Berbera?
Hot, windy conditions can increase dust loss, evaporation and handling damage, and coastal humidity and salt can spoil stored cement and rebar. Ask the site team how material is covered and stacked, and check a recent site to see the real delivered against fixed difference.
Local reporting: this article is written for building work in Berbera and Somaliland. Ground conditions, prices and rules differ between places; confirm the details for your own site.