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Using a Performance Based approach does not preclude the use of prescriptive specifications. Although the benefits of the adopting of a PBBD approach are significant, it is recognized that employing a performance-based approach at any stage in the building process is more complex and expensive than using the simpler prescriptive route.
Prescriptive specifications define the requirements using generic or proprietary descriptions of what is required, whereas performance specifications focus on the outcomes rather than the characteristics of the components. Specifications are an integral part of Building Information Modeling and cover the non-geometric requirements.
[8] [24] The performance path allows for some more flexibility, when compared to prescriptive codes. [ 8 ] [ 24 ] The performance path achieves this by creating space for building design-solutions that provide trade-offs between energy-intensive systems in order to meet both the energy performance goal and optimize cost-effective measures for a ...
Building performance is measured early too, so that trade offs between budget, schedule, functionality and usability can inform specification and continuous refinement of the design. Architects engaged in this dynamic process understand and keep up to date with the potential of contemporary technology [ 19 ] and materials available to building ...
Form, Fit, and Function (also F3 or FFF) is a concept used in various industries, including manufacturing, engineering, and architecture, to describe aspects of a product's design, performance, and compliance to a specification.
The shop drawing should address the appearance, performance, and prescriptive descriptions in the specifications and construction drawings. [2] The shop drawing often is more detailed than the information shown in the construction documents to give the architect and engineer the opportunity to review the fabricator’s version of the product ...
Construction design specifications are referenced in US government procurement rules, where there is a requirement that an architect-engineer should specify using "the maximum practicable amount of recovered materials consistent with the performance requirements, availability, price reasonableness, and cost-effectiveness" in a construction design specification.
Concerning the water issue, the code requires a 20% reduction of indoor water use and it uses both a prescriptive and performance method. The prescriptive method provides some technical features that have to be followed: Showerheads ≤ 2.0 gpm (gallons per minute) @ 80 psi; Lavatory faucets ≤ 1.5 gpm @ 60 psi; Kitchen faucets ≤ 1.8 gpm ...