Common mistakes in bill of quantities - Revision history

Designing Buildings at 06:56, 8 October 2020

2020-10-08T06:56:23Z

← Older revision		Revision as of 06:56, 8 October 2020
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	* Types of bill of quantities.		* Types of bill of quantities.

−	[[Category:~~Standards_/_measurements~~]] [[Category:~~DCN_Standard~~]] [[Category:Cost_/_business_planning]] [[Category:Procurement]]	+	[[Category:DCN_Commentary]] [[Category:DCN_Example]] [[Category:DCN_Guidance]] [[Category:Standards_/_measurements]] [[Category:Cost_/_business_planning]] [[Category:Procurement]]

Designing Buildings at 13:35, 10 October 2018

2018-10-10T13:35:40Z

Editor at 14:18, 13 August 2018

2018-08-13T14:18:36Z

← Older revision		Revision as of 14:18, 13 August 2018
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	* Bill of quantities.		* Bill of quantities.
	* Bill of quantities software.		* Bill of quantities software.
		+	* Common mistakes in construction tenders.
	* Cost plans.		* Cost plans.
	* Cost overruns.		* Cost overruns.

Editor at 15:04, 9 August 2018

2018-08-09T15:04:32Z

← Older revision		Revision as of 15:04, 9 August 2018
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	=== Related articles on Designing Buildings Wiki ===		=== Related articles on Designing Buildings Wiki ===

		+	* Advantages of a bill of quantities.
	* Approximate bill of quantities.		* Approximate bill of quantities.
	* Bill of quantities.		* Bill of quantities.

Editor: Created page with "The bill of quantities (sometimes referred to as 'BoQ' or 'BQ') is a document prepared by the cost consultant (often a quantity surveyor) that provides project specific measured ..."

2018-08-09T12:35:41Z

Created page with "The bill of quantities (sometimes referred to as 'BoQ' or 'BQ') is a document prepared by the cost consultant (often a quantity surveyor) that provides project specific measured ..."

New page

The bill of quantities (sometimes referred to as 'BoQ' or 'BQ') is a document prepared by the cost consultant (often a quantity surveyor) that provides project specific measured quantities of the items of work identified by the drawings and specifications in the tender documentation.

It is very important that bills of quantities are prepared according to a standard, widely recognised methodology. This helps avoid any ambiguities or misunderstandings and so helps avoid disputes arising through different interpretations of what has been priced.

However, there are still some common mistakes that can be made in the bill of quantities. These include:

* Inaccurate measurement of quantities.
* The inclusion of irrelevant preliminary items (this can be due to using preliminary items from a previous project which, although it may be similar, contains differences in scope).
* Insufficient information given in the descriptions.
* Omissions and discrepancies between the BoQ and the drawings (perhaps due to out-of-date or inaccurate drawings being used).
* Omissions or double-counting of items (this can be due to more than one quantity surveyor working on the same bill).
* Omission of temporary works items.

There can also be errors made in the pricing, such as:

* Incorrect understanding of the work method.
* Past performance used to assume productivity.
* Inexperience of the estimator.
* Ignoring the relationship between items of work.
* Changes that are made late in the process.
* Inaccurate assumptions regarding items in the BoQ.
* Arithmetic errors.
* Differences in currencies not considered.

= Find out more =

=== Related articles on Designing Buildings Wiki ===

* Approximate bill of quantities.
* Bill of quantities.
* Bill of quantities software.
* Cost plans.
* Cost overruns.
* Elemental bill of quantities.
* Estimate.
* How to take off construction works.
* Measurement.
* Taking off.
* Types of bill of quantities.

[[Category:Standards_/_measurements]] [[Category:Cost_/_business_planning]] [[Category:Procurement]]

← Older revision		Revision as of 13:35, 10 October 2018
Line 1:		Line 1:
−	~~The~~ bill of quantities (sometimes referred to as 'BoQ' or 'BQ') is a document prepared by ~~the~~ cost consultant (often a quantity surveyor) that provides project specific measured quantities of the items ~~of work~~ identified by the drawings and specifications in the tender documentation.	+	A bill of quantities (sometimes referred to as 'BoQ' or 'BQ') is a document prepared by a cost consultant (often a quantity surveyor) that provides project-specific measured quantities of the items identified by the drawings and specifications in the tender documentation for construction works.

	It is very important that bills of quantities are prepared according to a standard, widely recognised methodology. This helps avoid any ambiguities or misunderstandings and so helps avoid disputes arising through different interpretations of what has been priced.		It is very important that bills of quantities are prepared according to a standard, widely recognised methodology. This helps avoid any ambiguities or misunderstandings and so helps avoid disputes arising through different interpretations of what has been priced.

−	However, there are ~~still~~ some common mistakes that can be made in the bill of quantities. These include:	+	However, there are some common mistakes that can be made in the bill of quantities. These include:

	* Inaccurate measurement of quantities.		* Inaccurate measurement of quantities.
	* The inclusion of irrelevant preliminary items (this can be due to using preliminary items from a previous project which, although it may be similar, contains differences in scope).		* The inclusion of irrelevant preliminary items (this can be due to using preliminary items from a previous project which, although it may be similar, contains differences in scope).
	* Insufficient information given in the descriptions.		* Insufficient information given in the descriptions.
−	* Omissions and discrepancies between the BoQ and the drawings (perhaps due to out-of-date or inaccurate ~~drawings~~ being used).	+	* Omissions and discrepancies between the BoQ and the drawings or specifications (perhaps due to out-of-date or inaccurate information being used).
	* Omissions or double-counting of items (this can be due to more than one quantity surveyor working on the same bill).		* Omissions or double-counting of items (this can be due to more than one quantity surveyor working on the same bill).
	* Omission of temporary works items.		* Omission of temporary works items.
Line 15:		Line 15:

	* Incorrect understanding of the work method.		* Incorrect understanding of the work method.
−	* Past performance used to assume productivity.	+	* Past performance used to assume future productivity.
	* Inexperience of the estimator.		* Inexperience of the estimator.
	* Ignoring the relationship between items of work.		* Ignoring the relationship between items of work.
Line 41:		Line 41:
	* Types of bill of quantities.		* Types of bill of quantities.

−	[[Category:Standards_/_measurements]] [[Category:Cost_/_business_planning]] [[Category:Procurement]]	+	[[Category:Standards_/_measurements]] [[Category:DCN_Standard]] [[Category:Cost_/_business_planning]] [[Category:Procurement]]