Called as such if not included as Bill No. 1 - Preliminaries in full.
To specify the contractual requirements, financial requirements and site constraints specific to the project and common to all work sections in addition to those contained the Conditions of Contract.
To specify the technical aspects of the work
To specify the materials, workmanship and acceptance standard. 说明用料、工艺及验收标准.
May contain some general requirements which would not be repeated on the Tender Drawings. 会有一些图纸不再表达的一般性规定.
May also contain some special requirements which could not be shown on the Tender Drawings. 亦会有一些图纸表达不了的特殊规定.
To supplement the Technical Specification in table format.
May contain spaces for tenderers to fill in information about their proposals.
Method of specifying
By specific brands or models.
By prime cost rates.
Usual contents of a section in the Technical Specification
Contractor's design requirements
Contractor's submissions and approval procedures
Independent laboratories' test reports
Field installation drawings
Ancillary builder's work drawings
Provision of Specification
Specification should be obtained from the Architects and Engineers upon commencement of taking-off. 在开始计量时由设计方提供.
Occasionally, the Architects and Engineers may ask the Quantity Surveyors to provide Specification. Strictly speaking, provision of Specification is not part of the Quantity Surveyors’ usual services and is excluded from the fees.
Some QS firms have their standard specification. Provision of such standard specification for the Architects’ and Engineers’ reference should be qualified as to the liability for errors.
Making general references to local government or national or industry standard specifications may lack precision because of the presence of different levels of optional requirements in the standard specifications. 若纯叁阅政府或国家或行业标准，因有不同程度的选择性规定，会太笼统.
The Technical Specification should be drafted to suit the need for the Works. 工料规范之技术要求应就本工程的需要编写.
BQ descriptions to reflect the Specification
The Specification may contain additional information on materials and workmanship which are not shown on the Drawings. There may be different grades for the same class of materials. There may be different components making up a complete work which require separate measurement. Therefore, care should be exercised to ensure that the BQ items represent and correspond to the materials, workmanship, kind, type, grade, etc. given in the Specification.
The Specification is usually very lengthy, it would be impracticable for the BQ descriptions to repeat the Specification clauses. The Specification should be read together with the BQ descriptions. Instead of repeating the Specification clauses in detail, the BQ descriptions should be adequate to define the scope of component materials and work required so that there would be no ambiguity as to what are required to be included in the BQ rates.
Specification notes on Drawings 图纸上的规范说明
The specification notes on Drawings should be scrutinized as well. The specification notes generally reflect the particulars of a particular project more than the Specification which can be very standard for all projects.
Any discrepancies between the clauses in the Specification and the specification notes should be clarified with the Architects or Engineers.
The terminology of specification notes on Drawings and annotations on Drawings can be loosely used, and inconsistency with the terminology used in the Specification is not uncommon. The terminology used in the Specification should be followed in the BQ descriptions.
Lining through Specification 规范上画线
Similar to the practice of lining through notes and annotations on Drawings, the clauses in the Specification should also be lined through each by each as and when the contents have been taken into consideration in the measurement or writing BQ descriptions. 如在图纸上的文字说明及数字画线一样，工料规范的条款在计算工程量或写分项说明时已予以反映的，该条款便应画线以资识别。逐段画线的图例:
Since the Specification clauses may involve work measured by more than one Taker-off, the Specification clauses should be lined through by all Takers-off involved. Different colour pencils may be used by different Takers-off and the bottom of the line or pages should be initialled. 涉及的计量员都应以不同的木颜色笔画线，并在每页的线底端签名，以资负责.
Handwritten draft changes to the Specification should be marked by fountain pens, ball pens or felt pens using red ink. 发觉工料规范有需要修改的地方，应以不褪色的笔标记，留待最后时打印修订.
Upon completion of taking-off, the presence of any Specification clauses not lined through may mean that they have not yet been taken into account. 计量完毕时，任何未画线的条款表示未在工程量清单内应用及反映.