Understanding variations – a contractor's perspective

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Andrew Ash osborneclarke.com
osborneclarke.com What is a variation? • What is a variation? • The circumstances in which variations might arise: – Instructions from the CA or Engineer – Changes to drawings – Changes in site/work management, methods and procedures e.g. changes in access or changes to site accommodation – Employer requests – Instructions to expend provisional sums – Changes in Statutory Requirements and Regulations –post formation of contract – Contractor requests – Discrepancies in and/or between contract documents – Agreed tender assumptions proven to be incorrect – Unforeseen ground conditions
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Page 3: osborneclarke.com Variations - intr
Page 7 and 8: osborneclarke.com Conditions preced
Page 9 and 10: osborneclarke.com Time bar provisio
Page 11 and 12: Tim Tapper
Page 13 and 14: Basic Principles • JCT • 5.1 -
Page 15 and 16: Preliminaries in Variations • Try
Page 17 and 18: The Contractor’s QS and the PQS
Page 19 and 20: Valuation at Fair Rates • JCT 200
Page 21 and 22: Valuation of Omissions • JCT 2005
Page 23 and 24: Presentation of variation account
Page 25 and 26: Variations after Practical Completi

Understanding variations – a contractor's perspective

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