Chapter 25 - Construction Specifications Flashcards
What do technical specifications describe?
the quality of materials and workmanship
general requirements for the execution of the work
standards
Project Manual includes
all contract and non-contract document for a project EXCEPT the drawings and agreement
Project Manual has four sections:
- bidding requirements (if needed)2. parts of the contract itself (agreements between owner and contract, bond forms, and the like)3. conditions of the contract4. technical specs
There are two broad categories of specs
Prescriptive (closed)| Performance (open)
_____ tell exactly what product or material the contractor must use by brand name
Prescriptive specs
____ tell what results the final construction assembly must achieve, but they give the contractor some choice in how they will be achieved
performance
If a project is bid, should the specs be open or closed?
open - so the contractor can find the lowest price within the context of the spec requirements
There are two types of Prescriptive specs
proprietary and base-bid
There are three types of Preformance specs
Descriptive
Reference standard
Pure Performance
most restrictive specs that call out a specific manufacturer’s product. give the interior designer complete control. easier to write and generally shorter. don’t allow for competitive bidding
proprietary (this is a type of prescriptive spec)
A __________, calls out a proprietary material or product but alls the substitution of other products that the contractor thinks are equal to the one stated. Risky bc contractor may substitute something that’s less expensive and thinks is equal but is not
base-bid (this is a type of prescriptive spec)
Two variations of a base-bid spec?
- specs list several manufacturers of a product. contractor can bid on any. good for public work. burden is on designer. 2. approved equal language. proposed substitution must be approved by the designer.
A __________ is a type of performance (open) spec that gives detailed written requirements for the material or product and the workmanship required for its fabrication and installation. it does not mention trade names. it’s difficult because all pertinent requirements must be written
descriptive spec
A _________ is a variation of the descriptive spec type that describes a material, product, or process based on requirements (reference standards) set by an accepted authority or test method
generally these are easier to write and are shorterchances for errors are reduced and liability is minimized
reference standard specification
A ___________ is a statement setting criteria and results required of the item being specified often used when the specifier wants to encourage new ways of achieving a particular result these are difficult to write and rarely used for interior construction
pure performance spec
_____ are prewritten specifications that cover nearly all types of products, methods of installation, and other variables that relate to a specific product or construction activity
master specs
____ specs are similar to master specs but they’re less complete
guide specs
three ways to produce master specs
- commercial products that a design office can buy
- offices can have their own spec writer
- use a spec consultant