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PDD NCARB PRACTICE EXAM: QUESTIONS & ANSWERS
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PDD NCARB PRACTICE EXAM: QUESTIONS & ANSWERS
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PDD NCARB PRACTICE EXAM: QUESTIONS & ANSWERSDescriptive Specification Right Ans - "Describe"
Describes the work result or the product
■Apple example: Red Round Apple
■Spec example: Gypsum board -paper faced with 5/8 inch gypsum core
A specification which describes all product components, arrangements,
assembly methods, properties, and other details and requirements.
Descriptive specs are a hybrid of performance and prescriptive specs. They
describe the way the product will perform without calling out a specific
manufacturer, but are likely to also include clauses detailing specific means
and methods of construction. For instance, a descriptive specification might
both establish the strength of the mortar, and establish the water ratio in a
mortar mix to be used.
Performance Specifications Right Ans - "Perform"
■What is the outcome that is desired.
■Apple Example: satisfies hunger
■Spec Example: R-Value 6.2 per inch minimum
Tell what results the final construction assembly must achieve, but they give
the contractor some choice in how they will be achieved.
Performance-based specs describe the way the product will perform without
calling out a specific manufacturer, for example, "fasteners must be able to
withstand a wind load of 110 mph."
Proprietary Specification Right Ans - "Proper"
■Names the product by brand.
■Apple Example: Honey Crisp Red Apples grown at Mira Farms
■Spec Example: Polyguard650 Sheet Membrane
Specifies a particular product by brand name and allows no substitutions.
Closed Proprietary specs name the specific manufacturer, and don't allow
substitutions, for example, "CR Laurence Co Double Seal Spacers, in dark
,bronze and with a dual seal, catalog number 3455590 shall be used at
stairwell windows"
Open Proprietary specs also name one product from one manufacturer as the
basis for design, but they allow other products as acceptable substitutions.
Substitutions are processed through the General Requirements substitutions
procedures in Division 01 of the spec set.
Reference Standard Specification Right Ans - "Refer"
■Utilizes industry standards as the benchmark.
■Apple Example: USDA Grade A
■Spec Example: Gypsum Board: ASTM C1396
Variation of a descriptive spec (performance spec). Describes a material,
product or process based on requirements (reference standards) set by an
accepted authority or test method. ex. ASTM, ANSI, UL, AWI. Fairly easy to
write.
Reference specs demand the product or installation meet the requirements
laid out by a trade association, government agency, or other industry
reference standard, for instance, "Scaffolding must meet requirements as laid
out in ANSI ASC A14.2," or, "Clay brick conservation treatment must meet
requirements as established in the National Research Council Canada National
Master Specification, section 04 04 21.19.
Unit cost vs unit-in-place cost Right Ans - "unit cost" usually refers to
construction cost estimating during design and bidding
"unit-in-place" is a term usually reserved for appraisers estimating the worth
of a building someone is looking to purchase, refinance, insure, or account for
in an audit.
The unit cost method estimates building budgets or construction costs by
breaking down the project into smaller parts, estimating the cost of each of
those parts, then multiplying that unit cost by the number of parts (units) in
the project. In early design, the "units" may be square feet of finished space.
One might make an estimate by taking a $600 per square foot guess (unit cost)
and multiplying that by the 10,000 square feet in the project to reach a budget
of $6,000,000. Later in the design process (PDD world) the estimate is based
on more detailed information: the linear feet of pipe multiplied by the
approximate installed cost per linear feet of pipe, plus the number of faucets
, times the average price of an installed faucet, plus. . . . and so forth for the rest
of the project. These spreadsheets may swell in length.
Unit-in-place cost method does the same thing-separate all the components of
a building, estimate the cost of each unit (in cubic feet of concrete, square feet
of paint, linear feet of foundation, number of theaters in the multiplex, number
of roofs on the campus, or number of exterior doors on the warehouse) and
multiply that unit cost by the number of units on the property. . . , then add
everything up to reach a total value for a property appraisal.
An architect is designing a university research lab. The university provides
three manufacturers of a piece of specialty equipment to the architect, who
will include them in a set of open proprietary specifications. The client also
provides the following information:
Manufacturer A is preferred to Manufacturers B or C.
No products from other manufacturers will be accepted.
What should the architect include in the specifications?
A.
Requested alternates
B.
Proposed substitutions
C.
Controlled substitutions Right Ans - Correct answer: A
CORRECT RESPONSE
Requested alternates
In open proprietary specifications with requested alternates, the architect can
list Manufacturer B and Manufacturer C as alternates. Bidders will include
both base bids and prices for each alternate product. The architect can then
decide if installing Manufacturer B's or Manufacturer C's product will result in
significant savings. No other substitution is allowed.
Section: Project Manual & Specifications
An architect is adding fire-rating tags to the floor plan of a fully sprinklered
fire station. The fire chief requests that the walls between bunk rooms receive
a smoke partition. The remaining building occupancies include the following:
Apparatus Bays: S-2
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