Question 3 of 6: Contract Administration — delivery systems, unbalanced bids and bidder responsibility

Question 3: Contract Administration — delivery systems, unbalanced bids and bidder responsibility (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.

Design-Bid-Build. In the traditional approach the owner retains a consultant, completes the design, and then tenders a fully documented scope for a stipulated price, most often on CCDC 2. Its advantages follow directly from that sequence. Because the documents are complete when bids are called, every bidder prices the same scope and the bids are directly comparable, which is what makes low-bid award objective and defensible — a decisive consideration for a public agency answerable for the use of public money. The owner retains full control of the design and can specify quality precisely; roles and liabilities are well settled, with the consultant responsible for design and the contractor for means and methods; the standard documents, bonding forms and administrative practices are familiar to everyone; and the owner has a firm lump-sum price before construction starts. Its disadvantages follow from the same sequence. Design and construction cannot overlap, so it is the slowest delivery method available. No constructor participates in design, so constructability problems, long-lead items and sequencing difficulties are discovered after the price is fixed, and they emerge as change orders. The owner impliedly warrants the adequacy of the documents it issues, so errors and omissions in them are the owner’s cost. Price certainty arrives late, after the owner has already spent the design fee. And low-bid award attracts bid-shopping, unbalanced pricing, and the occasional below-cost bid submitted in the hope of recovering through claims, which sets an adversarial tone before the first shovel is in the ground.

Construction Management at Risk. Here the owner engages a construction manager early, on qualifications, to provide preconstruction services alongside the designer; at an agreed point the CM converts to a constructor at risk under a guaranteed maximum price and holds the trade contracts directly. The advantages are the mirror image of Design-Bid-Build’s weaknesses. Constructor input during design improves constructability, allows value engineering while changes are still cheap, and permits fast-tracking, so foundations can be tendered while the superstructure is still being detailed — typically the single largest schedule saving available. Trade packages are competitively bid and bought out on an open-book basis, so the owner sees the actual subcontract prices, and shared-savings provisions align the CM’s interest with the owner’s. The owner keeps its direct relationship with the designer, unlike design-build, and the CM carries the cost risk above the GMP. The disadvantages are equally real. The GMP is fixed on incomplete design, so it necessarily contains contingency and risk premium, and disputes about whether a given item was within the GMP documents are the characteristic quarrel of this model, as are disputes about who owns the unspent contingency. Total price is not competitively tendered as a single number, so the agency loses the simplest form of price transparency. Selection is qualifications-based and therefore more difficult to defend publicly than a low-bid award. And the model demands a sophisticated owner: open-book accounting must actually be audited, and the administrative burden on the owner’s staff is far heavier than under a stipulated price contract.

Filtering out unbalanced bids. A unit-price bid is unbalanced when the individual item prices do not reasonably reflect the cost of performing those items plus a proportionate share of overhead and profit. Agencies distinguish a mathematically unbalanced bid, where the prices are simply distorted, from a materially unbalanced bid, where the distortion means the agency may not in fact end up paying the lowest ultimate cost, or is exposed to an unacceptable advance of funds. The two motives are front-end loading — inflating mobilisation, clearing and excavation so that early progress payments finance the job at the owner’s expense — and quantity-error exploitation, in which the bidder prices an item high because it believes the tendered quantity will grow, and prices another low because it believes that quantity will shrink. The standard screening tests are arithmetic and cheap to apply: compare each unit price against the engineer’s estimate and against the mean of the other bids and flag any item outside a stated band; compute the proportion of the bid value falling in the first few months of the schedule of values; discount each bidder’s projected payment stream at the agency’s cost of money and compare the present values rather than the face totals; re-evaluate the bids using the agency’s own best estimate of final quantities to see whether the ranking changes; and look specifically for nominal, zero or lump-sum entries on items whose quantities are uncertain. A bid that fails the material test may be rejected outright, and the invitation must reserve that right expressly, because a bid submitted in response to a compliant invitation creates binding obligations of fair evaluation.

Selecting a responsible winner. Canadian tendering law makes this a two-stage test. A bid must first be responsive: submitted on time and in the required form, signed, accompanied by the bid security, acknowledging every addendum, with every item priced and no qualifications or conditions attached. A material irregularity cannot be waived, because the submission of a compliant bid forms the preliminary contract that Canadian courts have recognised since Ron Engineering, and accepting a non-compliant bid breaches the duty of fairness owed to the other bidders — a duty the Supreme Court confirmed in M.J.B. Enterprises and Martel Building. Only a minor irregularity that gives no competitive advantage may be waived, and the decision must be documented. A responsive bidder must then be responsible, which is a judgement about capability rather than about the bid: financial capacity, demonstrated by audited statements and by a surety’s willingness to issue the CCDC 221 performance bond and the labour and material payment bond; relevant experience on work of comparable size, type and complexity; the named superintendent and project manager, and their availability; current backlog and the plant available; safety performance, evidenced by the experience rating and by certification under a recognised programme; quality and past-performance records with the agency and with others; and compliance with labour, prompt-payment and licensing obligations. Public agencies commonly settle these questions before the tender through prequalification, which is the cleanest way to apply subjective criteria without jeopardising the objectivity of the price competition. The privilege clause — “the lowest or any bid will not necessarily be accepted” — supports a decision not to award to the low bidder, but it does not license an award on undisclosed criteria; the evaluation must follow the criteria the invitation stated.