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