Approximate bill of quantities - Revision history

https://www.designingbuildings.co.uk/w/index.php?action=history&feed=atom&title=Approximate_bill_of_quantities Approximate bill of quantities - Revision history 2026-05-27T18:56:23Z Revision history for this page on the wiki MediaWiki 1.17.4 https://www.designingbuildings.co.uk/w/index.php?title=Approximate_bill_of_quantities&diff=172656&oldid=prev Designing Buildings at 08:32, 4 September 2020 2020-09-04T08:32:53Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 08:32, 4 September 2020</td> </tr><tr><td colspan="2" class="diff-lineno">Line 34:</td> <td colspan="2" class="diff-lineno">Line 34:</td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Unpriced bill.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Unpriced bill.</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>[[Category:Cost_/_business_planning]] [[Category:Procurement]]</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">[[Category:DCN_Definition]] [[Category:DCN_Guidance]] </ins>[[Category:Cost_/_business_planning]] [[Category:Procurement]]</div></td></tr> </table>

Designing Buildings https://www.designingbuildings.co.uk/w/index.php?title=Approximate_bill_of_quantities&diff=138203&oldid=prev Editor at 18:09, 25 June 2019 2019-06-25T18:09:32Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 18:09, 25 June 2019</td> </tr><tr><td colspan="2" class="diff-lineno">Line 32:</td> <td colspan="2" class="diff-lineno">Line 32:</td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Standard Method of Measurement (SMM7).</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Standard Method of Measurement (SMM7).</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Types of bill of quantities.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Types of bill of quantities.</div></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">* Unpriced bill.</ins></div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Cost_/_business_planning]] [[Category:Procurement]]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Cost_/_business_planning]] [[Category:Procurement]]</div></td></tr> </table>

Editor https://www.designingbuildings.co.uk/w/index.php?title=Approximate_bill_of_quantities&diff=134098&oldid=prev Editor at 11:02, 1 May 2019 2019-05-01T11:02:53Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 11:02, 1 May 2019</td> </tr><tr><td colspan="2" class="diff-lineno">Line 5:</td> <td colspan="2" class="diff-lineno">Line 5:</td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Tendering on the basis of an approximate bill of quantities can allow early selection of the contractor and so an early start on site. However, the approximate nature of the bill of quantities will tend to result in more variations during construction and so less price certainty when the investment decision is made. This means that even if it is not possible to determine exact quantities, it is sensible to try to ensure quantities are as accurate as possible.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Tendering on the basis of an approximate bill of quantities can allow early selection of the contractor and so an early start on site. However, the approximate nature of the bill of quantities will tend to result in more variations during construction and so less price certainty when the investment decision is made. This means that even if it is not possible to determine exact quantities, it is sensible to try to ensure quantities are as accurate as possible.</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>Some contracts allow for re-measurement of approximate quantities (for example, this is common on cut and fill on roadworks). Here, quantities are simply revised and payments made accordingly without the need to instruct a variation.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>Some contracts allow for re-measurement of approximate quantities (for example, this is common on cut<ins class="diffchange diffchange-inline">-</ins>and<ins class="diffchange diffchange-inline">-</ins>fill on roadworks). Here, quantities are simply revised and payments made accordingly without the need to instruct a variation.</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>If an approximate quantity turns out not to have been a realistic estimate of the quantity actually required, this may constitute a relevant event giving rise to claims for an extension of time and loss and expense.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>If an approximate quantity turns out not to have been a realistic estimate of the quantity actually required, this may constitute a relevant event<ins class="diffchange diffchange-inline">, </ins>giving rise to claims for an extension of time and loss and expense.</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Approximate bills of quantities can also be used during the design process as a tool for controlling design costs (see approximate quantities cost plan below). They are then sometimes included in the tender documents as a guide with a caveat stating that responsibility for measuring quantities lies with the contractor, and drawings and specifications take priority over any description in the approximate bills.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Approximate bills of quantities can also be used during the design process as a tool for controlling design costs (see approximate quantities cost plan below). They are then sometimes included in the tender documents as a guide with a caveat stating that responsibility for measuring quantities lies with the contractor, and drawings and specifications take priority over any description in the approximate bills.</div></td></tr> <tr><td colspan="2" class="diff-lineno">Line 13:</td> <td colspan="2" class="diff-lineno">Line 13:</td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>An approximate quantities cost plan is, in effect, a priced approximate bill of quantities. It is a development of the elemental cost plan, but unlike the elemental cost plan (in which the cost of elements is broken down from the overall construction cost, based on the experience of the cost consultant and known costs of similar completed projects) the approximate quantities cost plan is a first attempt to measure defined quantities from drawings.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>An approximate quantities cost plan is, in effect, a priced approximate bill of quantities. It is a development of the elemental cost plan, but unlike the elemental cost plan (in which the cost of elements is broken down from the overall construction cost, based on the experience of the cost consultant and known costs of similar completed projects) the approximate quantities cost plan is a first attempt to measure defined quantities from drawings.</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>It presents a more accurate picture of where costs are distributed, in particular it draws to the attention of designers those elements of the design that are standard and those that are not and as a consequence may be more expensive. The approximate quantities cost plan should form a solid base for an effective value engineering exercise. From the point that the approximate quantities cost plan has been approved, cost control can be introduced by treating changes as if they are variations.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>It presents a more accurate picture of where costs are distributed, in particular it draws to the attention of designers those elements of the design that are standard and those that are not <ins class="diffchange diffchange-inline">- </ins>and as a consequence may be more expensive. The approximate quantities cost plan should form a solid base for an effective value engineering exercise. From the point that the approximate quantities cost plan has been approved, cost control can be introduced by treating changes as if they are variations.</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">= Find out more =</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>= Related articles on Designing Buildings Wiki =</div></td></tr> <tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div> </div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr> <tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">==</del>= Related articles on Designing Buildings Wiki <del class="diffchange diffchange-inline">==</del>=</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Advantages of a bill of quantities.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Advantages of a bill of quantities.</div></td></tr> </table>

Editor https://www.designingbuildings.co.uk/w/index.php?title=Approximate_bill_of_quantities&diff=113734&oldid=prev Editor at 15:02, 9 August 2018 2018-08-09T15:02:24Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 15:02, 9 August 2018</td> </tr><tr><td colspan="2" class="diff-lineno">Line 17:</td> <td colspan="2" class="diff-lineno">Line 17:</td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>= Find out more =</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>= Find out more =</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>=== Related articles on Designing Buildings Wiki<del class="diffchange diffchange-inline">: </del>===</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>=== Related articles on Designing Buildings Wiki ===</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">* Advantages of a bill of quantities.</ins></div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Approximate bill of quantities vs approximate quantities cost plan.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Approximate bill of quantities vs approximate quantities cost plan.</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Approximate quantities cost plan.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Approximate quantities cost plan.</div></td></tr> </table>

Editor https://www.designingbuildings.co.uk/w/index.php?title=Approximate_bill_of_quantities&diff=113717&oldid=prev Editor at 13:41, 9 August 2018 2018-08-09T13:41:05Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 13:41, 9 August 2018</td> </tr><tr><td colspan="2" class="diff-lineno">Line 23:</td> <td colspan="2" class="diff-lineno">Line 23:</td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Bill of quantities.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Bill of quantities.</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* CAWS.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* CAWS.</div></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">* Common mistakes in bill of quantities.</ins></div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Extension of time.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Extension of time.</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Firm bill of quantities.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Firm bill of quantities.</div></td></tr> </table>

Editor https://www.designingbuildings.co.uk/w/index.php?title=Approximate_bill_of_quantities&diff=92258&oldid=prev Editor at 12:27, 28 November 2017 2017-11-28T12:27:44Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 12:27, 28 November 2017</td> </tr><tr><td colspan="2" class="diff-lineno">Line 19:</td> <td colspan="2" class="diff-lineno">Line 19:</td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>=== Related articles on Designing Buildings Wiki: ===</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>=== Related articles on Designing Buildings Wiki: ===</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">* Approximate bill of quantities vs approximate quantities cost plan.</ins></div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Approximate quantities cost plan.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Approximate quantities cost plan.</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Bill of quantities.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Bill of quantities.</div></td></tr> </table>

Editor https://www.designingbuildings.co.uk/w/index.php?title=Approximate_bill_of_quantities&diff=91602&oldid=prev Designing Buildings at 16:41, 20 November 2017 2017-11-20T16:41:28Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 16:41, 20 November 2017</td> </tr><tr><td colspan="2" class="diff-lineno">Line 30:</td> <td colspan="2" class="diff-lineno">Line 30:</td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Relevant event.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Relevant event.</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Standard Method of Measurement (SMM7).</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* Standard Method of Measurement (SMM7).</div></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">* Types of bill of quantities.</ins></div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Cost_/_business_planning]] [[Category:Procurement]]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Cost_/_business_planning]] [[Category:Procurement]]</div></td></tr> </table>

Designing Buildings https://www.designingbuildings.co.uk/w/index.php?title=Approximate_bill_of_quantities&diff=91592&oldid=prev Designing Buildings at 16:36, 20 November 2017 2017-11-20T16:36:23Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 16:36, 20 November 2017</td> </tr><tr><td colspan="2" class="diff-lineno">Line 7:</td> <td colspan="2" class="diff-lineno">Line 7:</td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Some contracts allow for re-measurement of approximate quantities (for example, this is common on cut and fill on roadworks). Here, quantities are simply revised and payments made accordingly without the need to instruct a variation.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Some contracts allow for re-measurement of approximate quantities (for example, this is common on cut and fill on roadworks). Here, quantities are simply revised and payments made accordingly without the need to instruct a variation.</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>If an approximate quantity turns out not to have been <del class="diffchange diffchange-inline">an unrealistic </del>estimate of the quantity actually required, this may constitute a relevant event giving rise to claims for an extension of time and loss and expense.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>If an approximate quantity turns out not to have been <ins class="diffchange diffchange-inline">a realistic </ins>estimate of the quantity actually required, this may constitute a relevant event giving rise to claims for an extension of time and loss and expense.</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Approximate bills of quantities can also be used during the design process as a tool for controlling design costs (see approximate quantities cost plan below). They are then sometimes included in the tender documents as a guide with a caveat stating that responsibility for measuring quantities lies with the contractor, and drawings and specifications take priority over any description in the approximate bills.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Approximate bills of quantities can also be used during the design process as a tool for controlling design costs (see approximate quantities cost plan below). They are then sometimes included in the tender documents as a guide with a caveat stating that responsibility for measuring quantities lies with the contractor, and drawings and specifications take priority over any description in the approximate bills.</div></td></tr> </table>

Designing Buildings https://www.designingbuildings.co.uk/w/index.php?title=Approximate_bill_of_quantities&diff=91591&oldid=prev Designing Buildings at 16:35, 20 November 2017 2017-11-20T16:35:48Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 16:35, 20 November 2017</td> </tr><tr><td colspan="2" class="diff-lineno">Line 7:</td> <td colspan="2" class="diff-lineno">Line 7:</td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Some contracts allow for re-measurement of approximate quantities (for example, this is common on cut and fill on roadworks). Here, quantities are simply revised and payments made accordingly without the need to instruct a variation.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Some contracts allow for re-measurement of approximate quantities (for example, this is common on cut and fill on roadworks). Here, quantities are simply revised and payments made accordingly without the need to instruct a variation.</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>If an approximate quantity turns out not to have been <del class="diffchange diffchange-inline">a realistic </del>estimate of the quantity actually required, this may constitute a relevant event giving rise to claims for an extension of time and loss and expense.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>If an approximate quantity turns out not to have been <ins class="diffchange diffchange-inline">an unrealistic </ins>estimate of the quantity actually required, this may constitute a relevant event giving rise to claims for an extension of time and loss and expense.</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Approximate bills of quantities can also be used during the design process as a tool for controlling design costs (see approximate quantities cost plan below). They are then sometimes included in the tender documents as a guide with a caveat stating that responsibility for measuring quantities lies with the contractor, and drawings and specifications take priority over any description in the approximate bills.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Approximate bills of quantities can also be used during the design process as a tool for controlling design costs (see approximate quantities cost plan below). They are then sometimes included in the tender documents as a guide with a caveat stating that responsibility for measuring quantities lies with the contractor, and drawings and specifications take priority over any description in the approximate bills.</div></td></tr> </table>

Designing Buildings https://www.designingbuildings.co.uk/w/index.php?title=Approximate_bill_of_quantities&diff=89934&oldid=prev Editor at 18:09, 30 October 2017 2017-10-30T18:09:10Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 18:09, 30 October 2017</td> </tr><tr><td colspan="2" class="diff-lineno">Line 5:</td> <td colspan="2" class="diff-lineno">Line 5:</td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Tendering on the basis of an approximate bill of quantities can allow early selection of the contractor and so an early start on site. However, the approximate nature of the bill of quantities will tend to result in more variations during construction and so less price certainty when the investment decision is made. This means that even if it is not possible to determine exact quantities, it is sensible to try to ensure quantities are as accurate as possible.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Tendering on the basis of an approximate bill of quantities can allow early selection of the contractor and so an early start on site. However, the approximate nature of the bill of quantities will tend to result in more variations during construction and so less price certainty when the investment decision is made. This means that even if it is not possible to determine exact quantities, it is sensible to try to ensure quantities are as accurate as possible.</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>Some contracts <del class="diffchange diffchange-inline">allows </del>for re-measurement of approximate quantities (for example, this is common on cut and fill on roadworks). Here, quantities are simply revised and payments made accordingly without the need to instruct a variation.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>Some contracts <ins class="diffchange diffchange-inline">allow </ins>for re-measurement of approximate quantities (for example, this is common on cut and fill on roadworks). Here, quantities are simply revised and payments made accordingly without the need to instruct a variation.</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>If an approximate quantity turns out not to have been a realistic estimate of the quantity actually required, this may constitute a relevant event giving rise to claims for an extension of time and loss and expense.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>If an approximate quantity turns out not to have been a realistic estimate of the quantity actually required, this may constitute a relevant event giving rise to claims for an extension of time and loss and expense.</div></td></tr> </table>

Editor