what is a specification Flashcards
What is a specification?
A written document describing all the work to be carried out on a specific construction site.
What are the two types of specification?
- Prescriptive
- Performance
What items may be included in a prescriptive specification?
- Brand
- Colour
- Size
- Materials
- Type of
- Price
- Manufacturer
- Trend
What does a specification provide regarding the work required?
A good outline of work required.
What standards does a specification outline?
Quality of work and standards of workmanship.
What additional information does a specification list?
Detailed information on method of construction.
What is the role of a fully completed specification with construction drawings?
It provides the contractor with sufficient information to cost, construct, and control quality.
What components is specification divided into?
- Brickwork
- Roofing
- Windows
- Plasterboard
- Steelwork
- Concrete foundations
What is NBS?
National Building Specification.
What coding system does NBS use?
Recognised industry coding system (CI/SF3).
What does NRM stand for?
New Rules of Measurement.
How does performance specification differ from prescriptive specification?
Prescriptive tells all the detail; performance leaves design to the contractor.
What is an example of performance specifications in application?
The architect has designed a garage and leaves the design to the contractor.
What is typically listed in performance specifications?
- Site appearance
- Type
- U value
- Fire rating
- Compliance with technical standards
What does a well-designed timber fire door do?
Delays the spread of fire without hindering movement of people or goods.
What standard test procedure is used to judge the performance of timber doors?
Standard test procedure 426 part 22 1987 or BS EN 1234-1:2000.
What does BS1192 show?
Cross sections through materials.
What does CP stand for?
Code of Practice.
What treatment should all timber used in construction have?
Preservation treated by approved methods.
Fill in the blank: Specifications will give a good outline of work required and quality of work and _______.
[standards of workmanship]
True or False: Performance specifications provide all design details.
False
