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ASHI HOME INSPECTION STANDARDS
OF PRACTICE EXAM
Fuel - ANSWER Evaluating a water heater should report on the type of public or private - ANSWER inspector should determine weather the main supply is or Gas vent pipes terminating above the roof pitch up to : need to be ft high - ANSWER 6:12 1 foot sum pumps are to be - ANSWER inspected Masonry chimneys shall be corbelled no more then the chimneys wall thickness - ANSWER 1/ A grounding bus should be found in all - ANSWER Sub panels Existing Knob-tube wiring should be replaced if and if - ANSWER damaged, ground circuit is required Aluminum lower branch wiring can be made - ANSWER Safe in the home Metal sheathed cable is technically known as or - ANSWER BX or AC All methods that join Aluminum and copper wires together require and - ANSWER maintenance and create copper pig tails Every Kitchen counter at least 12 inches wide should have a - ANSWER grounding receptacle If a GFCI is attached to an ungrounded outlet it - ANSWER will not function minimum conductor size for a amp service is 4-awg copper or 2awg aluminum - ANSWER 100 amp Most modern 200 amp electrical meters are marked - ANSWER 200cl an underground service entrance is called a - ANSWER service lateral The method for installing a UF cable is - ANSWER direct burial every 5 - 6 feet the rigid service masts should be secured to - ANSWER the structure points
A service drop should be at least - feet away from any nearby trees - ANSWER 5 - 6 feet service drops should never pass closer than feet above the ridge of a conventional pitched roof. - ANSWER 3 feet What ensures that two fuses or circuit breakers are disconnected at the same time - ANSWER Linking A 240 volt circuit needs a , and two adjacent open holes in the service panel - ANSWER Breaker coupler, two pole breaker The copalum connecter system attaches a copper wire to an aluminum wire using - ANSWER high compression `Neutral and ground must be separated, must be bonded and must be isolated - ANSWER Sub panel requirements most areas require two means of grounding - ANSWER separate All panel enclosures need to be - ANSWER bonded to ground The minimum size for a copper grounding electrode rod is - ANSWER 5/8th diameter and 8feet in the ground Gas supply piping cannot be used as a - ANSWER grounding means Conductors between the main service disconnect to the distribution panels are called - ANSWER Feeders A split bus electrical panel uses a double-pole breaker to the 120 volt circuits - ANSWER Isolates The available service amperage is based on the rated component - ANSWER Lowest Electrical service panels should be in a clear space measuring in wide by in high and in deep - ANSWER 30 inches wide 78 inches high and 36 inches deep A should be reported as a problem with an electrical panel - ANSWER double-pole breaker A bonding connection connect the grounding bus to the electrical enclosure - ANSWER should
ANSWER Fuel , airgas to As hot gasses cool, they release a lot of heat energy as they change their state from to
- ANSWER gas to liquid Burning natural gas creates and - ANSWER water vapor and carbon dioxide When a high-efficiency condensing furnace is operating a of condensate water may drain out every 30 min. - ANSWER Quart The components and asosries for furnaces and are almost identical - ANSWER wood and coal Hydronic heating, system is a forced heating system - ANSWER hot water A hot water system that supplies hot water at temperatures higher than degrees is referred to as a high-temp system. - ANSWER 250 degrees Every hot water heating system circulates water either by a or - ANSWER pump or by gravity What are two types of steam heating systems - ANSWER low and high pressure Air admittance valves are permitted to fixtures at island structers in kitchens - ANSWER vent The unobstructed vertical distance through the free atmosphere between an outlet and the rim best describes in the - ANSWER an air gap in the drainage system Air- admittance valves protect traps from - ANSWER siphonage where do gasses escape a sanitary drainage system at a - ANSWER Vent stack An anchoring ring that is secured to the floor is a - ANSWER Water closet flange The flow of liquids in reverse of its intended path decrices - ANSWER Back flow Hot water is water at a temp of degrees or higher - ANSWER 110 degrees or higher
The outlets must be connected to a waste drain pipe at least inches - ANSWER 1 1/ inches There should be a space of at least inches in front of the water closet "toilet" - ANSWER 21 inches Closet Bolts are often made of to resist corrosion - ANSWER Brass The waste from an automatic clothes washer must discharge its water through an or into a standpipe or into a laundry tub - ANSWER Air break or air gap If a standpipe for an automatic clothes washer is used, the standpipe and its trap should be at least inches in diameter. - ANSWER 2 inches An exterior window at an exterior wall must be made of safety glazing unless the bottom exposed edge of the glass is above the tub floor surface. - ANSWER 60 in or more shower egress opening must be in - ANSWER 22 inches if a pump at a whirlpool bathtub is located more than ft from the access opening a min size opening of x inches should be installed - ANSWER 2 feet , 18x18 inches are best described as short lengths of pipe attached directly to a fixture by means of a flange for connection to other piping or traps - ANSWER Tailpieces The water temp limiting device can be adjusted to prevent the water temp from rising above a certain temp typically degrees - ANSWER 120 degrees
Type copper tubing is the thickest and used undergrounf - ANSWER K Minimum diameter of a water service pipe is typically inches - ANSWER 3/4 inches Test water pressure at the point - ANSWER highest Well casing should extend above ground surface - inches - ANSWER 6 - 12 inches The joint between different types of plastic made with solvent cement will not be reliable because the chemical composition, of the joint will not be - ANSWER homogenous The minimum slope of a horizontal drainpipe that is sized between 3 - 6 inches is per foot - ANSWER 1/8th inch per foot The drain waste and vent system of the dwelling should be tested with a minimum ft head of water for 15 min - ANSWER 10 - feet The sump pit should not be less than inches wide and inches deep - ANSWER 18 inches wide and 28 inches deep The discharge pipe on a sump pump should have a check valve installed to prevent previously pumped discharge from to - ANSWER returning to the pump The vent pipe that passes through a roof should end at least inches above the roof - ANSWER 6 inches
There should be at least vent pipe that extends to the outdoor air for a dwelling - ANSWER one vent The min size of any vent is half the required size of the drain pipe, but not less than inches - ANSWER 1 1/4 inches Standpipes, like that for a clothes washer have a min height above the trap of inches - ANSWER 18 inches A water seal of inches is standard for most traps - ANSWER 2 inches Hangers and strapping should be made of material that will not promote action - ANSWER Galvanic The maximum horizontal spacing for PVC drainage pipe is feet - ANSWER 4 feet The max horizontal spacing for supporting cast-iron pipe is feet - ANSWER 5feet Storm water, rain water or ground water should not be drained into a - ANSWER sewer system Ground surface of the lot should be graded so as to drain surfaces water away from the foundaton walls the ground should be dropped a min of __ inches within the first feet - ANSWER 6inches 10 feet An should be used only with a solid fuel burning appliance, and not with a gas fired. - ANSWER manual damper
swimming pool barriers must be at least inches above grade - ANSWER 48 inches A gas furnace back up system typically has the exchanger located - ANSWER up stream of the heat pump coil Head wall flashing should - ANSWER should be extended up behind the exterior wall covering and down over the roof covering material hydronic distribution systems use & as methods of heat transfer - ANSWER radiation, and convection During the heating months, indoor coil of a heat pump is the - ANSWER condenser coil fireplace hearths are typically made of or - ANSWER concrete or masonry A proper masonry chimney cap should be constructed of portland cement based mix and cast formed so it provides an overhang projecting beyond all sides of the chimney by a min of inches - ANSWER 2 inches When insulating the floor above an unheated area, a vapor barrier should be installed
. - ANSWER facing the finished floor The checks the exhaust flue for heat - ANSWER primary control An provides a controlled way of ventilating a home while min energy loss - ANSWER energy recovery ventilation
The balance point is the point, at which the - ANSWER Heat pump can just keep up with the heat loss Water pressure tanks typically have - ANSWER bladders 10 inches of fiberglass insulation provides an insulation value of R- - ANSWER R- 30 The condenser on a conventional air-cooled central air-conditioning system is located- - ANSWER In an out door cabinet near the compressor. the typical setting for a low temp limit or primary control on a boiler is degrees - ANSWER 140 degrees The minimum thickness for a solid door installed between a garage and the living space is inches - ANSWER 1 3/8 inches The purpose of the primary controller on a conventional oil furnace is that it prevents - ANSWER Oil accumulation in the combustion chamber Flooring in front equipment installed in the attic shall be inches wide and inches in length around all sides - ANSWER 30 inches and 30 inches The function of a compressor in an air conditioning system is to the to a - ANSWER convert the gas into a liquid A heel joint connections are found where? - ANSWER celling joist connecting to a rafter
- stops water from running under the projection and back to the wall - ANSWER Capillary break Forced warm air systems have a high- temp limit switch that cuts off the fuel if the heat exchanger gets - ANSWER too HOT (175)degrees A standing pilot is the main distinguishing characteristics of the conventional gas furnace. - ANSWER Low efficiency Step flashing is installed the and surrounds the base of the - ANSWER beneath the shingles , chimney Whole house fans work best below % humidity and below degrees - ANSWER 75% humidity 85 degrees 2x8 joist should only span feet and inches - ANSWER 15 feet 7 inches A fire wall witch a 1 - hour rating has a inch min distance for metal electrical outlet boxes installed on opposite sides of the wall - ANSWER 24 inch A high efficiency natural gas furnace requires an additional - ANSWER Heat exchangers Barometric damper ensure - ANSWER proper combustion A bennifet of a water boiler vs. a steam is a water boiler quieter and can release within walls & floors - ANSWER runs, heat
The air moving component of an air handler is a a & - ANSWER fan, blower, squerel cage impeller Near or below the balance point, heat pumps operating in heating mode may not be able to generate enough to warm the house - ANSWER Heat Radiators on a two-pipe steam boiler do not need - ANSWER Relief valves Guard rails around the top of an open stair should be at least inches high - ANSWER 36 inches Type chimneys are low heat prefabricated metal chimneys they have been tested and approved - ANSWER A cups of water can enter through 1/2 inch round hole via air transpiration in a year - ANSWER 50 cups Type gas vents are typically used for standard gas fired furnaces that are installed in the attic. - ANSWER C water cooled: condensed depend on both temp and - ANSWER water temp and pressure A gas chiller uses - ANSWER heat in rafter- only cathedral celling should be installed in each rafter bay from the roof edge to provide for at least inch air space below the deck - ANSWER air chutes, peak, 1 inch
cathedral or vaulted ceilings best be vented using continuous and vents - ANSWER ridge and soffit vents The required min distance from the front of a furnace to the door of the equipment closet in witch it is installed is inches - ANSWER 6 inches in a central air conditoner the temp drop across the plenum coil should be - degrees - ANSWER 14 - 22 degrees joist with a load above may be observed as a celling in a finished room - ANSWER undersized joist, sagging celling basements can funnel moisture from the exterior into the interior components this can accrue because of is higher in the soil and lower in the basement - ANSWER Hydrostatic pressure gradient Built up roofs should not be used on roof slopes of : or steeper - ANSWER 4: where the flue pipe enters the chimney stack there should be at least feet of clearance above the chimney - ANSWER 2 feet, cleanout The best type of attic ventilation occurs when cooler air can enter the attic through or fascia vents and out through vents mounted near top of the roof vents - ANSWER soffit, ridge vents vents are for wall furnaces - ANSWER BW
The component of a central air conditioner that produces condensate is - ANSWER evaporator coil releases heat - ANSWER condenser The min thinckness for ridge bond is inch thick - ANSWER 1 inch Valley flashing is considered a type of flashing. - ANSWER shedding A jumper wire should be used to bridge the electrical ground across. - ANSWER an water meter every dwelling is required to have a - ANSWER toilet, bath, lavatory and shower The maximum desirable temp at an 8 - foot celling in a room with radiant pipe heating is degrees - ANSWER 110 degrees The min required headroom above an attic access opening is inches - ANSWER 30 inches The depth of a star tread should be a min of inches - ANSWER 10 inches improves the drying ability of slates and shingles - ANSWER skip shingle sheathing The maximum recommended length between the seams of pieces of roll roofing is feet - ANSWER 18ft
A masonry is a vertical compression member whose height exceeds 3x its thickness and where the width is less than one & a half the times the thickness - ANSWER column The minimum gauge for copper wire for a 20 - amp breaker is AWG - ANSWER 12AWG Furnaces rated at avg efficiency tend to experience % of cycle losses of the fuel they consume - ANSWER 20% the purpose of a transformer in a commercial building is to or - ANSWER increase or decrease the voltage In many jurisdictions the gas piping must be bonded to the - ANSWER Electrical ground system Two methods for installing a drain for a dishwasher include an gap device and a - ANSWER air gap device, hi-loop A Code where a bathroom dose not have an operable window - ANSWER Bathroom fan needed An accessible gas shut off valve for an appliance shall be located before the within feet of the appliance - ANSWER before the union connection and within 6 feet A common problem with heat-recovery ventilations is a - ANSWER Missing damper Polybutlene piping failures tend to be found at the - ANSWER crimp rings
A horizontal fireblock is required around a metal chimney pipe at and - ANSWER floor and celling levels Copper pipe that is 3inch horizontally should be supported every feet - ANSWER 10 feet Catalic combusters on wood stoves typically last up to years - ANSWER 4 years The min height for a light installed over a swimming pool is feet - ANSWER 12feet Radon mitigation systems typically operate under - ANSWER vacuum Joist are typically connected to wood beams using - ANSWER hangers The more immediate concern of a solid masonry wall is leaning or bowing is - ANSWER unsafe for end - bearing for joist a dome like structure on a roof used as a lookout or to admit light and air is a - ANSWER Cupla one condition that can cause negative pressure within a home is - ANSWER a leaky furnace The production of excessive is the main distinguishing characteristics' of a High-efficiency gas fired furnace - ANSWER condensatate Footings for masonry chimneys must be made of concrete or solid masonry at least ft thick - ANSWER 1 foot 12 inches
