KNOWLEDGE TEST PREP (GCS)
QUESTIONS 100% ANSWERED
, Who is responsible for requiring the wearing of appropriate personal protective
equipment?
REFERENCE: OSHA - 1926.28(a) - ANSWERSThe employer
Valley flashing for metal roof shingles shall extend at least:
REFERENCE: FBC-B 2020/2017 - 1507.5.7 - ANSWERS8 inches from the centerline
each way
How many plies of coal tar built-membrane are needed to waterproof a wall when the
hydrostatic pressure is 49 feet?
REFERENCE: NRCA-2020-WATERPROOF-PG.43 & 44 - ANSWERS3
On counter flashing systems, flashing receivers should be:
REFERENCE: SMACNA-PG.4.6 - ANSWERS16 oz. copper
A roofing crew should be able to place ___ squares per day of mechanically fastened
EPDM roofing.
REFERENCE: WALKERS 31ST - PG.825 - ANSWERS35
In batten seam roofing, the recommended MAXIMUM distance between battens is:
REFERENCE: SMACNA-(7th)-PG. 6.18 - ANSWERS20 inches
In a HVHZ, no re-cover applications shall take place over which of the following existing
materials?
REFERENCE: FBC-B 2020/2017 - 1521.16 - ANSWERSWood shingles
It is recommended that drip edge metal for tile roof systems be fabricated from:
REFERENCE: NRCA Steep Slope (2021) PG. 226 - ANSWERS16 oz copper
A gallon of water weighs:
REFERENCE: NRCA-2020-WATERPROOFING - PG. 30 - ANSWERS62.4 lbs per
cubic foot