Co-Operative Insurance Society Ltd. v Henry Boot Scotland Ltd & Ors

Factual and Procedural Background

The freehold owner of the property known as Lomond House, 9 George Square, Glasgow (the Property) was Company A. By a written agreement dated 1 September 1995 (the Contract), Company A engaged Company B to undertake demolition (including façade retention), design, and reconstruction works at the Property (the Works). Company A is the Claimant in this action and Company B is the First Defendant. Company B is a subsidiary of a larger entity, the Second Defendant, which is not further referenced in this judgment. Company C, consulting engineers, was engaged by Company A to act as consulting engineers in connection with the Works and is the Third Defendant.

During execution of the Works on 13-14 March 1996, water and soil flooded into sub-basement excavations, leading to claims by Company A regarding the consequences. The court ordered that certain preliminary issues relating to the contractual position between Company A and Company B be tried. These issues primarily concern the construction of the Contract and whether a 1994 site investigation report prepared by an independent firm (the Report) was incorporated into the Contract and, if so, the consequences of such incorporation. Although the preliminary issues arise directly only between Company A and Company B, submissions were received from counsel representing all three parties, with Company C broadly supporting Company A's position. The dispute involves claims and counterclaims as to responsibility for the flooding event.

Legal Issues Presented

1. Whether the 1994 site investigation report (the Report) was incorporated into the Contract as a Contract Document.
2. Whether the Report amounted to a warranty or representation by Company A that the prevailing ground conditions and groundwater levels would be as described therein.
3. What contractual rights and obligations Company B had in respect of the prevailing (actual) ground conditions and groundwater levels on site, and whether these were subject to the conditions discernible from the Report.
4. Whether the Contract excluded Company B's liability for consequences arising from differences between prevailing ground conditions and those discernible from the Report.
5. What contractual rights and obligations Company B had in relation to the design of the piled walls forming part of the Works.
6. Whether Company B had any responsibility or obligations in respect of any element of the design of the piled walls previously prepared by others.
7. Whether the obligation to warn pursuant to a specific contractual clause was relevant to Company B's design responsibilities.
8. What responsibilities Company B had in respect of carrying out and completing the construction of the piled walls.
9. Whether Company B was entitled to payment under the Contract for work consequent upon a change in prevailing ground conditions from those provided for or which should have been provided for in the Bills of Quantities.
10. Whether the Contract Bills complied with the Standard Method of Measurement of Building Works, 7th Edition (SMM7), particularly in relation to ground water levels and earthwork support.

Arguments of the Parties

Appellant's Arguments (Company B)

• The Report was incorporated into the Contract as a Contract Document, or at least the statement of prevailing ground conditions within it was incorporated, based on references in contract drawings and Bills of Quantities.
• The Report formed a contractual benchmark for ground conditions, and Company B was entitled to rely on it.
• The contiguous bored pile wall design by Company C and Company B's proposed dewatering would have been effective if ground conditions had matched those described in the Report.
• There was an implied term or warranty that ground conditions would accord with those in the Report.
• Company B's obligations included completing the design of earthwork support and piled walls, and they were entitled to recover additional payment under Clause 2.2.2 and SMM7 if actual conditions differed from those in the Report.
• The Contract Bills did not properly state the pre-contract groundwater level or include items for earthwork support below groundwater level or in unstable ground, requiring correction and valuation as variations.

Appellee's Arguments (Company A and Company C)

• The Report was not incorporated into the Contract as it was not listed as a Contract Document nor signed or stamped as such.
• References to the Report in contract drawings were for information only and did not incorporate the Report by reference.
• The Report contained numerous qualifications and disclaimers, and did not amount to any definite contractual statement or warranty regarding ground conditions.
• Clause 2.2.2.4 of the Contract allocated the risk of differing ground conditions to Company B, requiring them to satisfy themselves as to site conditions before tendering.
• Company B was responsible for design and construction obligations regardless of the Report, including completion of design and provision of working drawings for earthwork support and piled walls.
• The Contract Bills complied with SMM7 to the extent required; provisional quantities were subject to re-measurement, and corrections for errors in Contractor's Proposals or Contractor's Designed Portion did not entitle Company B to additional payment.
• Any variations arising from changes in design or quantities due to breach of contract by Company B were their responsibility and did not give rise to entitlement to additional payment.

Table of Precedents Cited

No precedents were cited in the provided opinion.

Court's Reasoning and Analysis

The court conducted a detailed contractual construction analysis focusing primarily on the incorporation and effect of the 1994 Report. It concluded that the Report was not incorporated into the Contract as a Contract Document because it was not listed or signed as such, and the nature of such a report is inherently provisional and qualified. The references to the Report in contract drawings were informational only and insufficient to incorporate it by reference.

The court rejected the argument that a term should be implied that the prevailing ground conditions would accord with those in the Report, emphasizing the lack of any definite or positive statement in the Report and the presence of explicit qualifications.

Clause 2.2.2.4 was interpreted as allocating the risk of differing ground conditions to Company B, requiring them to satisfy themselves about site conditions prior to tendering. This clause was not an exclusion clause but a risk allocation provision consistent with the overall contract structure.

Regarding design obligations, the court held that Company B's contractual duty was to complete the design of the piled walls and earthwork support with reasonable skill and care, including assessing and integrating existing conceptual designs and preparing working drawings. The obligation to warn of defects applied both to design work undertaken by Company B and to design elements prepared by others if defects were apparent to a competent contractor.

On construction obligations, Company B was responsible for carrying out and completing the piled walls in a manner that ensured stability and structural integrity, including taking groundwater effects into account.

In relation to the Bills of Quantities and compliance with SMM7, the court found that the Contract Bills did not properly state a pre-contract groundwater level as required by SMM7 and that provisional quantities were subject to re-measurement. The court rejected submissions that general or preliminary items in the Bills could cover omitted earthwork support items, emphasizing the necessity for specific description and measurement rules under SMM7.

The court declined to resolve factual disputes or address issues requiring evidence not before it, reserving such matters for the main trial.

Holding and Implications

The court held that the 1994 Report was NOT INCORPORATED into the Contract between Company A and Company B, and no express or implied contractual warranty or representation arose from it regarding prevailing ground conditions.

The risk of differing ground conditions was allocated to Company B under Clause 2.2.2.4, requiring Company B to satisfy itself about site conditions prior to tendering.

Company B had contractual obligations to complete the design and construction of the piled walls and earthwork support with reasonable skill and care, including a duty to warn of any defects apparent to a competent contractor.

The Contract Bills failed to comply fully with SMM7 requirements regarding the statement of pre-contract groundwater levels and specific description of earthwork support items, necessitating corrections and possible valuation as variations, subject to factual findings at trial.

The court's decision affects the direct contractual rights and liabilities of the parties but does not establish new legal precedent beyond the interpretation of the particular Contract and the application of SMM7 measurement rules. The resolution of factual disputes and entitlement to payment for variations remains for the main trial.