NASCLA Commercial Building Exam | 308 Questions and Answers 100% Correct | Updated 2024

NASCLA Commercial Building Exam | 308 Questions and Answers 100% Correct | Updated 2024 What is the minimum ceiling height for means of Egress? - ANSWER Not less than 7 feet 6 inches Emergency Power must illuminate for how long? - ANSWER No less than 90 minutes Elevators are required in a building with how many stories? - ANSWER More than 3 (or at least 4). What is the size of the refuge space for one wheel chair? - ANSWER 30 inches by 48 inches Each area of refuge shall be separated from the remainder of the story by what? - ANSWER Smoke Barrier What is the minimum width of a door? - ANSWER 32 Inches The minimum clear opening height of doors shall be no less than (at least) - ANSWER 80 inches Which direction should a hinge door swing when the building occupies more than 50 people or is classified as Group "H"? - ANSWER In the direction of egress The force for pushing or pulling open interior swinging egress non fire doors shall not exceed how many pounds? - ANSWER No more than 5LBS Clear opening below a door should be no more than - ANSWER 4 inches Panic hardware is required when - ANSWER There are more than 50 possible occupants The maximum unlatching force of panic or fire hardware should not exceed how many pounds? - ANSWER 15lbs Stairway width for less than 50 people is - ANSWER 36 inches Stairway width for more than 50 people - ANSWER 44 inches Handrails should extend passed the top riser by - ANSWER 12 inches Maximum handrail width is - ANSWER 2 inches Where handrails are not continuous between flights, the handrails should extend horizontally how many inches? - ANSWER 12 inches Clear space between handrail and wall - ANSWER 1 1/2 Required guards shall not have an opening how large? - ANSWER 4 inches Corridor width chart can be found in what book? - ANSWER 2018 IBC (Thick blue book) page 287 Emergency escape and rescue openings shall have the bottom of the opening not greater than how many inches? - ANSWER 44 inches measure from floor Accessible parking Spaces chart can be found where? - ANSWER 2018 IBC Page 308 Net Free Ventilating area shall not be less than - ANSWER 1/150th of the area of the space ventilated (Page 321 IBC) The spacing of the ties or fastenings for exterior metal veneer shall not exceed how many inches? - ANSWER 24 inches Lap siding should have minimum lap of how many inches? - ANSWER 1 and 1/4 inches Metal flashing on walls, roof intersections, no less than how thick? - ANSWER 0.019 What class assemblies are most effective against severe fire test? - ANSWER Class A Asphalt shingles should only be used on roof slopes - ANSWER Of two units vertical in 12 units horizontal (17%) Valley lining material thickness chart can be found where? - ANSWER IBC 351 Wood Shake and Wood shingle exposure table - ANSWER IBC 352 Minimum Slope of a roof is - ANSWER 1/4 : 1 Allowable deflection table can be found - ANSWER IBC 363 A geotechnical investigation must be conducted when: - ANSWER When backfilling more than 12inches under a footer The grade away from a building must be - ANSWER 5% for at least 10 feet Dampproofing must be applied from where? - ANSWER Footer to above grade Where should a foundation drain be placed? - ANSWER Top of the drain at least 6 inches above the top of the footing, filter fabric over stone Sandy, silty sand, clayey, table - found where? - ANSWER 434 IBC Backfill compressive strength has to be what PSI? - ANSWER At least 2000 PSI