Font size
WorksheetsElectrical
Total questions: 23
Worksheet time: 17mins
The minimum thickness of masonry fireplace hearths shall be ___ inches.
6
7
2
4
For a masonry fireplace opening that is less than 6 square feet, what are the minimum dimensions for the hearth extensions to extend?
(Front extension X each side extension)
16 in X 8 in
12 in X 6 in
18 in X 9 in
20 in X 10 in
What should the dimensions of the hearth extension be for a masonry fireplace opening that is 6 square feet or larger?
(front extension X each side extension)
18 in X 10 in
24 in X 12 in
16 in X 8 in
20 in X 12 in
Wood beams, joists, studs, and other combustible material shall hace a clearance of not less than (a) inches from the front faces and sides of masonry fireplaces.
Combustible material within (a) inches of the fireplace opening shall not project more than 18 inch for each 1-inch distance from such an opening.
Chapter 11 regulates the (a) efficiency for the design and construction of buildings regulated by the IRC.
For mechanical systems, a level working space not less than ___ inches deep and ___ inches wide shall be provided in front of the control side to service an appliance.
25 inches deep and 25 inches wide
30 inches deep and 30 inches wide
65 inches deep and 65 inches wide
40 inches deep and 40 inches wide
What is the minimum dimensions of an opening and clear, unobstructed passageway for attics containing appliances?
Input answer as Height X Width X Length
(a)
Attics containing mechanical appliances shall be provided with an opening and a clear and unobstructed passageway large enough to allow removal of the (a) appliance.
Mechanical appliances installed in attics shall have a luminaire controlled by a switch located at the required ___ ___ and a receptacle outlet shall be installed at or near the appliance location.
(a)
Mechanical appliances suspended from the floor shall have a clearance of not less than ___ inches from the ground.
12
4
6
9
Mechanical appliances having an ignition source of ignition is not less than ___ inches above the floor in garages.
15
12
18
22
What should not be installed at the termination of a clothes dryer exhaust duct?
(a)
What is the nominal diameter that a clothes dryer exhaust duct should be?
5 inches
4 inches
8 inches
10 inches
A 4-inch radius mitered 45-degree elbow dryer exhaust duct fitting shall reduce the maximum 350foot length of a dryer duct by ___ feet ___ inches.
Write your answer as "A feet B inches"
(a)
Where should an exhaust duct system be installed?
Clothes dryer
Refrigerator
Stove
Washing machine
Crimp joints for round and ovel metal ducts shall be lapped not less than ___ inch(es).
1/2
1
3
5
Under-floor plenums shall be ___ in new structures.
Installed
Implemented
Optional
Prohibited
(a) air for heating, ventilation, and air-conditioning systems shall not be taken from a closet, bathroom, toilet room, kitchen, garage, mechanical room, boiler room, furnace room, ir unconditioned attic.
For mechanical system installations in flood hazard areas, ___ ___ openings shall be located at or above the required elevation.
Masonry fireplace
Exhaust duct
Combustion air
Manually operated vent (a) shall not be installed except in connectors or chimneys serving solid fuel-burning appliainces.
The minimum measurement of vertical clearance required for freestanding or built-in ranges to unprotected combustible material.
20 inches
30 inches
40 inches
45 inches
Sauna heaters shall be equipped with a thermostat that will limit room termperature to not greater than ___oF.
194
98
109
140
