National 5 Flashcards
Flashing with weep holes at the bottom of a wall is called _____.
Wall termination flashing
Plastic grid type foundation drainage systems work in conjunction with _____ _____ _____.
Perimeter drainage tile.
1/ _____ is a common gutter slope.
200
A gabion is a type of _____ retaining wall.
Gravity
The most rot resistant wood is _____.
preserved wood foundation pressure treated
Retaining walls require ____ weep holes every _____.
4”
10’
Purlins are required at every _____.
Rafter.
Deck/patio ledger boards should be secured with _____ _____.
Lag bolts
Settlement cracks occur at _____ _____ in a wall.
Weak spots
Ridge boards are typically nominal _____ boards, are ____ size larger than rafters, and sometimes allow opposing rafters to be _____.
1”
one
offset
Skylights should be installed ____” above roof coverings on a roof sloped 3/12 or less.
4”
Modified bitumen has a lifespan of _____ to _____ years.
14-20
Deflection in a roof system could mean _____ defects.
framing
New shingles applied in cold weather could be susceptible to _____ _____ _____ because sealing strips _____ _____.
tabs tearing off
don’t hold
Cutting the points refers to _____ _____.
Asphalt shingles
Clamp on amp meter reads 0 at load element of water heater. This means that _____ _____ _____ is _____ _____ or has a broken _____.
electric water heater is not on
element
Service drop wires are sometimes _____ than service entrance wires, which is normal. The opposite is not.
smaller
An over tightened fuse can cause _____ and bending of the _____.
overheating
Bus bar
Boiler horizontal vent minimum rise is _____ per foot.
1”
A _____ _____ is required for masonry chimneys.
crown cap
Cat III vents minimum distances are controlled by _____ _____.
manufacturer’s instructions
Type B vents must terminate _____ feet from a sidewall.
8’
High efficiency condenser line dripping is _____.
normal
Circulating pumps are located _____ a boiler.
above
Supply and return plenums should not be in contact with _____ _____.
combustible materials
A mid efficiency induced draft gas furnace with positive pressure _____ manifolded with natural draft appliances.
should not be
High efficiency gas furnaces condense because they capture _____ _____ of _____.
latent heat of vaporization
Hartford loops prevent _____ _____ when the wet return leaks.
boiler leaks
KW x _____ = BTU PER HOUR.
3414
Gas fired room heaters do not require _____ _____ _____. They should however be _____, labeled for use in _____, and have adequate _____ to _____.
outdoor combustion air
vented
fireplace
clearance to combustibles
Boiler heat exchangers are usually made of _____, _____, or _____.
steel
copper
nickel
Exhaust gas temp from high efficiency furnace is between _____ and _____ F.
100 - 150° F
Max steady state efficiency for an oil burner is _____%.
87%
Gravity flow warm air furnace looks like _______.
a robot man next to water heater
The _____ is used to stop the furnace early to prevent overheating the house.
anticipator
When the coefficient of performance is less than _____ the heat pump willl shut off and backup electric heat will commence.
1
Backup heat strips are _____ of the indoor coil.
downstream
The _____ _____ runs from the condenser to the expansion device.
liquid line
The condenser fan _____ the refrigerant turning it into a _____.
cools
liquid
Air leakage is _____ to provide fresh air, however allows _____ to escape the house.
necessary
heat
There should be _____ flow measuring stations on HRV’s, at least _____ inches away from dampers, and should be connected to _____ to balance the system.
2
12”
Gauges
Defrost systems for HRV’s include : recirculating ______ through the fresh air side, running _____ air through the fresh side, or shutting off the ____ ____ fan. _____ _____ should not be used.
exhaust
house
fresh air
furnace air
Vents recently added to flat or cathedral roofs could be a sign of _____.
rot
Rot is likely to be most prevalent in walls near the _____.
bottom
Inlet and exhaust in HRV’s should be separated by _____ feet.
10
_____ _____ pipe can control water hammer.
Air cushion
Water pressure is highest when _____ _____ is _____.
No water is flowing
___ Gpm is acceptable flow rate from a well.
3
Min height for NONcombustible above range is _____ inches.
24”
_____ _____ _____ is not approved for range hood down draft exhaust.
Corrugated stainless steel
Party wall problems include _____, _____, and _____.
Ice dams
Discontinuity
Incomplete in attic
Foundation drain membranes can be installed _____ grade, provide an _____ _____ between earth and foundation, and are typically _____ at the top.
Below
Air space
Sealed
An inspection agreement may be invalid if there is no opportunity for the client to _____.
Negotiate
Failure to perform duties as a reasonable person would have done is _____ negligence.
Ordinary
Failing to report a significant defect could be considered _____ _____.
Negligent misrepresentation
The least likely person the report could be given to to be considered a breach of ethics would be the clients _____.
Parents
