Amber Book - Codes Flashcards
What is the maximum CROSS SLOPE for an ADA ramp?
1:48 or 2%
What is the maximum SLOPE of an ADA ramp?
1:12 or 8.3%
What is the maximum RUN of a 1:12 ADA ramp before a landing is required?
30’ (5’ landing required)
What is the maximum slope for an incline before it is considered a ramp?
1:20
These and anything less steep don’t need railings as they are not considered a ramp.
What is the minimum width of a cub cut?
4’
What are the maximum slopes relating to curb cuts?
1:12 for the ramp, 10% for the flares
How long is the designed reach of a firetruck’s hoses
150’
What are the critical dimensions of a firelane?
20’ Width
10’ Away from outermost building overhang
54’ outside turning radius
30’ inside turning radius
How much weight must a firelane support?
35 tons
What is the maximum dead-end corridor width?
20’ (unless really wide, then <2.5W)
What is the maximum occupancy for a room with a single exit?
49 people
Once you hit 50 people, you will need another exit.
How separated to the two exits of a room need to be?
1/2 of the longest diagonal dimension of the room
In what conditions do exits need to be pressurized to keep smoke out?
If they are taller than 75’
What is the minimum corridor width?
44”
*36 if fewer than 49 people
What is the minimum corridor height?
7’
*less than 50% of an area can be 6’8”
How far can a door project into a corridor?
Outward swinging door = less than half of the corridor width
Projection from inlet can’t be more than 7”
What are the minimum dimensions for egress stairs?
44” Minimum
Occupants x .3” for an UNSPRINKLERED
Occupants x .2” for SPRINKLERED
What are the critical guard rail dimensions?
42” high typical measured from tread
0-34” zone that can’t be penetrated by 4” sphere
What are the critical handrail dimensions?
Must be between 34”-38”
Top must extend 12”
Bottom must extend one extra run
What are the sizing dimensions of a handrail?
- 5” max protrusion
- 5” minimum between wall and rail
- 25” to 2” railing diameter
What are the basic steps when researching how codes will affect a project?
- Figure out the occupancy classification
- Figure out the construction type
- Calculate the height & area limitations
What are the different A-Type Occupancies?
A-1 - Assembly with a lot of crowded people and hazardous (theater, could be dark with pyro)
A-2 - Less assembly, but still somewhat hazardous (restaurant where cooking will be happening)
A-3 - Less assembly still, and less hazardous (library)
A-4 - Arenas, tennis courts, swimming pools
A-5 - Lots of people, but outside (football stadium)
What are the characteristics of a B-Business type occupancy?
They are not shops or places people go infrequently
Not a lot of hazardous materials or equipment.
Think office buildings, banks, car washes, post office, TV stations, etc.
What are the different hazardous occupancy types?
F1 - Moderate hazards (Bakeries, boat building, car factories)
F2 - Non-combustible (Beverage bottling, brick factories)
H - High Hazard (physical or health hazard)
H1 is detonation
H2 accelerated burning
H3 combustion or physical hazard
H4 health hazards
H5 hazardous production materials used
What are the characteristics of type I-Institutional occupancy?
- A place where people are not able to evacuate themselves.
I-1 - more than 16 people, supervised (rehab, assisted living, etc)
I-2 - Hospitals, nursing homes
I-3 - Jails, prisons
I-4 - Daycare
Give some examples of group M Occupancy
Department Stores Drug Stores Markets Retail Sales Rooms
Mercantile - for the display and sale of merchandise
What are the different subsections of Type-R Residential Occupancy?
R1 - Temporary (hotels)
R2 - Multiple Permanent (Apartments, dorms, frats)
R3 - Permanent, don’t hit the numbers for R1, R2, R4, or I (single-family homes too)
R4 - Similar to I-1, but with 5-16 people (rehab, assisted living, etc.)
What is the difference between S1 and S2 Occupancy?
S1 is Moderate hazard, whereas S2 is Low Hazard
*Less than 100sf storage is included with whatever occupancy it is located in
What is a group U Occupancy?
Utility/Misc - used as a misc use that doesn’t fit any other occupancy
Agriculture, barns, carports, greenhouses, retaining walls, private garages, sheds, tanks, towers.
How hot does it typically have to be for a sprinkler head to go off?
160F
What strategy can be used to prevent fire sprinkler systems from freezing?
Dry-piping! Fill the outdoor or colder area pipes with air so that they don’t freeze, the water will rush through after the air escapes.
What type of gyp board is used for fire rating?
Type X
- 5/8” thick
- Denser core with carbon fibers
How many occupants does it take for a building to need a central fire alarm system, safe areas, a backup generator?
300
When do you need a second stair and an elevator?
If there are two or more floors!
What building types are major triggers?
Restaurant, gymnasiums, assembly, temporary residential.
What code-related elements should cause you to think twice?
- Standpipes (these are complicated)
- 16 or more units in a residential building
- Change of use in an existing building (requires change in occupancy) These will require lots of reviews, even if the change is small.
What are the different types of alterations?
Repairs - patching, replacing little damaged elements
Level 1 Alt. - Removing or replacing something with a new material, equipment, or fixture
Level 2 Alt. - Reconfiguring the space (any new windows/doors, new HVAC, installing new equipment)
Level 3 Alt. - Work exceeds more than 50% of the building area (all of the seats in a theater)
