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B-General Building 5
HVAC & Plumbing
| Question | Answer |
|---|---|
| Furnaces must have a miniumum of ________ clearance for service and removal | 3 inches |
| Furnaces must have a minimum of _________ of platform from the furnace to the access door | 24 inches |
| A basis for determining furnace size, ________ BTU's required per square foot | 20 |
| The Boiling Temperature for water is | 212 degrees |
| The Freezing Temperature for water is | 32 degrees |
| Plastic Piping needs to be supported every _________ when being run horizontally | 4 feet |
| Copper Piping under 1 1/2" needs to be supported every ________ when being run horizontally | 6 feet |
| Galvanized Piping under 3/4" needs to be supported every _______ | 10 feet |
| Galvanized Piping over 1" needs to be supported every _____ when being run horizontally | 12 feet |
| Underground water pipes must be buried at LEAST | 12 inches deep |
| Non potable water pipes must be marked every ________ | 20 feet but not less than once per room |
| Water supply pipes to ANY building must be at least _______ | 3/4" |
| Define a "Full-Bore" valve | A Valve with an opening as big as the pipe it serves |
| What is the minimum amount of water pressure that a fixture is required to have | 15 PSI |
| What is the maximum amount of water pressure that a fixture is allowed to have | 80 PSI |
| How do you pass the test for a water supply system | a 50 PSI test must hold without leaking for 15 minutes |
| Water Closets (Toilets) cannot be less than _________ to a wall | 15 inches O.C |
| There must be a minimum _______ clearance in front of water fixtures | 24 inch |
| The finished dam in a shower cannot be more than _______ in heighth from the drain | 9 inches |
| DWV stands for | Drain, Waste, Vent system |
| ABS and PVC DWV systems are limited to structures no more than ________ | 2 stories high |
| VItrified Clay Pipes on a DWV cannot be used _________ | Above ground or on a pressurized pump |
| Galvanized wrought iron, stainless steel 304, or galvanized steel cannot be used for a DWV system __________ | Under ground, and must be kept 6 inches aboveground |
| Drainage pipes should have a slope of at least | 1/4" per foot |
| 4" or Larger Drainage pipes are allowed to have a slope of at LEAST | 1/8" per foot |
| Minimum Trap and Arm size for a Bathtub, sink, or dishwasher | 1 1/2" |
| Minimum Trap and Arm size for a Shower, Clothes washer, or Floor drain | 2" |
| Minimum Trap and Arm size for a Toilet | 3" |
| An accessible cleanout should be used for every ______ | 100 feet and combined change of 135 degrees |
| The underfloor cleanouts should be within ________ of the access hole | 20 feet |
| The Access between the access hole and an underfloor cleanout must have _________ | 18 inches high and 30 inches wide |
| Cleanouts for underground pipes should always be _______ | extended to grade |
| The maximum distance between a fixture and the fixtures trap is | 24 inches |
| Traps can serve up to _________ sinks or lavatories | 3 |
| Minimum size for a venting pipe is ______ | 1 1/4" or half the size of the connected sanitary pipe |
| Minium DWV horizontal pipe size for a Bathtub, washer, shower or sink is | 2 inches |
| Minimum DWV horizontal pipe size for a bar sink or wash basin is | 1 1/2 inches |
| Minimum DWV horizontal pipe size for a toilet is | 3 inches |
| Vents shall rise at least ________ from a horizontal drain pipe before making any turns | 6 inches |
| Vents cannot be installed with less than a _______ degree slope | 45 |
| Vents must extend above the roof at least ________ | 6 inches |
| How far must roof vents be from any opening into the building? | 10 feet horizontally, 3 feet vertically |
| How do you test the DWV systems | shutting down every opening and fill it with water at least 10 feet over the highest fitting, or a 5 PSI air test |
| The gas ignition devices on a water heater must be at least _________ above the floor | 18 inches |
| a Water Heater must be strapped where? | Upper 1/3 and Lower 1/3, minimum distance of 4 inches above the controls |
| Underground Gas Piping must have ______ of cover | 18 inches |
| Gas Piping must slope how often? | 1/4" every 15 feet |
| What is the maximum pressure for gas piping systems | 5 psi |
| Gas piping that penetrates into the room must have ________ of unthreaded portion | at least 1 inch |
| A Gas pipe must penetrate the room at least _______ from the floor | 2 inches |
| What is the max and min slope a finished shower may have | 1/4" minimum, 1/2" maximum |
| Generally, how many cubic feet of air can an A/C move per minute/per ton | 400 |
| What do Condensation drains require at their highest points? | Vented trap |
| How does a "split" A/C unit work? | Condenser is outside and releases heat back into the atmosphere while cold air is distributed inside home |
| What is the max GPM a lavatory is allowed? | 1.5 |
| What is the building envelope? | the area that surrounds the conditioned space, (Siding, insulation, drywall, studs, etc.) |
| What is the best way to position heat ducts in cold-weather climates? | Perimeter around the floor |
| Overflow condensation lines must discharge where? | Somewhere outside that is readily observable |
| Exhaust ducts that are greater than 8" needs supports every _________ | 20' |
| 1 Ton of A/C = ___________ BTU/hr | 12,000 |
| What is needed in a HVAC system while penetrating a wall with ducting | Fire damper |
| How many plumbing fixtures can a wet vent service? | 4 |
| What is an automated zone damper? | A device that electronically actuates air distribution in seperate zones? |
| Which trades are allowed to install residential fire systems? | Plumbers/Fire protection |
| In HVAC, what is the mechanical device that moves air? | Air handler |
| Where can an exterior furnace NOT be installed? | Under a window |
| Electrical disconnects for appliances must be _______ | in clear view from the appliance |
| What rule must be followed while trenching for a sewer line? | 45 degrees or lower from ground/footing plane |
| Which lines require freezing protection | Water, gas, DWV |
| What is the size required and slope required for condensation drain lines? | 3/4" diameter, 1/8" slope per foot |
| What size service platform is needed for an attic furnace? | 30" x 30" |
| Where should the "return" be located in a whole house forced air unit? | as close to the air handler as possible |
| How deep should plastic gas lines be located? | 18 inches |
| Where is a manual shut off required for a gas appliance? | at most 6 feet from the appliance |
| Sprinklers must be buried at least | 8"-12" |
| What is the PSI required for proper drip irrigation? | 10-12 |
Created by:
yobryan2009
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