Question 2 of 6: Contract Administration

Question 2: Contract Administration (20 marks)

Question text not reproduced: the examination questions are © Engineers and Geoscientists BC. Open the official past paper (linked at the top of this page) to read the question, then follow the worked solution below.

Bid unbalancing is a pricing tactic available on a unit-price contract, where the owner supplies estimated quantities for each item of work and the contractor supplies a rate against each one. The bid total that decides the award is the sum of quantity times rate over all items, so a contractor is free to move money between line items without changing that total. In unbalancing, the contractor deliberately loads some rates above cost and depresses others below cost, keeping the arithmetic sum at the level needed to win while re-shaping the cash flow and the risk profile of the contract in the contractor’s favour.

Two distinct motives drive the practice, and they are worth separating because they are detected differently. The first is front-end loading: rates for work performed early — mobilization, clearing and grubbing, excavation, temporary works — are inflated, while rates for late work such as landscaping, paving or commissioning are cut. The contractor is then paid for a disproportionate share of the contract sum in the first progress certificates and effectively borrows working capital from the owner at no interest, which is attractive on projects where holdback and slow certification would otherwise squeeze the contractor’s cash position. The second motive is quantity speculation, and it is the more damaging of the two. Estimated quantities in a unit-price contract are the owner’s estimates, not guarantees; a contractor who believes from the drawings, the geotechnical report or simple experience that a particular quantity will overrun places a very high rate on that item, and offsets it with a very low rate on an item expected to under-run. If the prediction is right, the final contract value rises well above the tendered total even though the bid was the lowest at award, and the owner pays a premium that was never visible in the comparison of bid totals.

Detection begins with the owner’s own estimate. Because the consulting engineer prepares an independent estimate before calling bids, every submitted rate can be tested against it, and the standard screening test is a line-by-line comparison expressed as a ratio of bid rate to engineer’s estimated rate. A balanced bid shows a scatter of ratios clustered about a single factor that reflects the bidder’s general market position; an unbalanced bid shows a systematic pattern — ratios well above unity concentrated in early or suspect-quantity items and ratios well below unity, sometimes nominal or even zero, elsewhere. A second and very effective test is the comparison of each rate against the corresponding rates from the other bidders, since collusion aside it is unlikely that several independent estimators are all wrong on the same item. A third is a mathematical check on the cash-flow implication: discounting each bidder’s payment stream to a present value at the owner’s cost of capital converts a front-end-loaded bid into a visibly more expensive one, which is why some public agencies evaluate on present value rather than on nominal total. Finally, the bid should be re-priced against the quantities the owner actually expects; if a modest change in one or two quantities swings the ranking of the bidders, the bid is unbalanced whether or not the bidder intended it.

The course of action open to the owner depends on the instrument the tender documents provided in advance, which is why the remedy has to be written into the call for bids rather than improvised afterwards. Standard practice, reflected in CCDC 23 Guide to Calling Bids and Awarding Contracts and in most Canadian public-agency tender instructions, is to reserve an express right to reject a materially unbalanced bid, and to define materially unbalanced as one whose distribution of prices does not reasonably reflect the cost of the work plus a reasonable profit, so that the owner is exposed to unreasonable cost if quantities vary. With that reservation in place the owner may (i) reject the bid outright as non-compliant; (ii) require the bidder to substantiate the questioned rates with cost build-ups and, if the substantiation fails, reject; (iii) accept the bid but require the schedule of prices to be rebalanced to the engineer’s estimate for progress-payment purposes only, leaving the contract sum unchanged; or (iv) accept the bid while relying on the contract’s variation-in-quantity clause, which reopens the unit rate for renegotiation once the actual quantity departs from the estimate by more than a stated percentage — commonly 15 % or 25 %. The last of these is the most robust long-term defence because it removes the payoff from the speculation rather than trying to prove intent. The owner should also recognise that not every skewed rate is improper: genuine differences in a bidder’s plant, haul distance or labour agreement can legitimately shift the balance between items, and rejecting a low bid without a reserved right and a defensible reason invites a claim in Contract A, the tendering contract that Canadian law recognises as arising when a compliant bid is submitted in response to a call for tenders.

On the second part of the question, the criterion for award on government work is, as a rule, the lowest compliant (responsive and responsible) bid. Compliance is assessed first: the bid must be submitted on the prescribed form, on time, at the right place, complete, signed, accompanied by the required bid security (a bid bond, usually 10 % of the bid price, or a certified cheque) and by the agreement to bond, and it must contain no qualification or condition that would give the bidder an advantage not available to the others. Responsibility is then assessed: the bidder must be prequalified or otherwise demonstrably capable — bondable to the full contract value, adequately experienced on comparable work, in good standing with the workers’ compensation board and with a satisfactory safety record, and possessing the plant and supervision the work needs. Among the bids that survive both tests, the award goes to the lowest price. In Canada this is further conditioned by procurement obligations under the Canadian Free Trade Agreement and the applicable trade agreements, which require open, non-discriminatory calls above threshold values and the publication of evaluation criteria in advance.

The advantages of the lowest-compliant-bid rule are substantial and explain its persistence. It is objective and mechanical, so the award can be defended in public and in court; it minimises the opportunity for favouritism and corruption in the disbursement of public money; it is transparent, since bids are opened publicly and the ranking is a matter of arithmetic; it maximises price competition, driving the market toward efficiency; and it is simple and quick to administer. The disadvantages are equally real. Price is a single dimension, and the rule is blind to quality, durability, life-cycle cost, schedule certainty and the contractor’s record of cooperation, so the lowest capital price can be the highest total cost of ownership. It rewards the bidder who has made the largest estimating error — the well-known winner’s curse — and an underpriced contract is subsequently managed by claim, so the owner faces change orders, disputes and adversarial administration. It encourages exactly the unbalancing described above, and it pushes risk down to subcontractors and suppliers, where it may reappear as defective work or insolvency. Because these weaknesses are well understood, Canadian public owners increasingly moderate the rule rather than abandon it: prequalification screens the field before price is considered, best-value or weighted evaluation systems score technical merit and price together on complex work, and alternative delivery models (design-build, construction management, integrated project delivery) shift the award onto qualifications plus a fee. Each of these buys quality at the cost of some transparency, which is the trade-off at the heart of public procurement.