2015 IRC 2023 with verified questions and answers

Storm drainage sump pumps shall be of a capacity and head appropriate to _______ use requirements. anticipated Electrical services within the scope of the IRC are limited to _____-volt, 0- to _____- ampere, single-phase systems. 120/240 & 400 Boiler pressure-relief valve discharge shall be pipes to drains by gravity to within _____ inches of the floor or to an open receptor. 18 Polyethylene tubing for hydronic piping systems shall be installed with _____ ______ joints. heat fusion The maximum amount of fuel oil stored above ground or inside a building shall be _____ gallons. 660 (The supply tank shall be supported on rigid noncombustible supports to prevent settling or shifting) Vent piping on oil tanks shall be not smaller than _____-inch pipe. 1 1/4 Oil tank vent piping shall terminate outside of building at a point not less than _____ feet, measured vertically or horizontally, from any building opening. 2 Components of a solar thermal energy system that might be subject to pressure drops below atmospheric pressure during operations shall be protected by a _____-_____ _____. vacuum-relief valve The minimum unobstructed total area of the outside and return air ducts or openings to a forced air warm-air FURNACE shall not be less than _____ square inches for each 1000 Btu/h output rating. 2 (This also applies to supply ducts.) Domestic clothes dryer transition ducts shall be metal and limited to a single length not to exceed _____ feet. 8 (Transition ducts shall not be concealed within construction.) What size are fuel-gas-fired domestic clothes dryer ducts? 4 inches The lowest portion of a gas floor furnace shall have not less than ______-inch clearance from grade level. 6 (Except where the lower 6-inch portion of the floor furnace is sealed by the manufacturer to prevent entrance of water, the minimum clearance shall be reduced to not less than 2 inches.) Vent connectors for draft-hood-equipped appliances shall not be _____ than the draft hood outlet diameter. smaller A Type B-W gas vent shall terminate at least _____ feet in vertical height above the bottom of the wall furnace. 12 A Type B or a Type L gas vent shall terminate at least _____ feet in vertical height above the highest connected APPLIANCE DRAFT HOOD or FLUE COLLAR. 5 Gas APPLIANCE shutoff valves shall be located in the same room as the APPLIANCE and not further than _____ feet from the APPLIANCE. 6 (Each appliance shall be provided with a shutoff valve separate from the appliance.) Fuel gas appliance connectors shall not exceed an overall length of _____ feet. 6 Gas vents over 12 inches in size shall terminate not less than _____ feet above the highest point where they pass through the roof. 2 (Amd at least 2 feet higher than any portion of a building within 10 feet) Underground fuel gas PIPING SYSTEMS shall be installed a minimum depth of _____ inches below grade. 12 (Except that individual lines to outside lights, grills or other appliances shall be installed a minimum of 8 inches below grade, provided it is not subject to physical damage.) Shield plates, when required to cover the area of concealed gas piping, shall be a minimum _____ gage. No. 16 Where gas piping is concealed and run within _____ inches from the framing member face to which the membranes will be attached it shall be protected by shield plates. 1 1/2 Fuel gas PIPING installed across roof surfaces shall be elevated not less than _____ inches above the roof surface. 3 1/2 BTU is the abbreviation for _____ _____ _____, which is the quantity of heat required to raise the temperature of 1 pound of water 1°F. British Thermal Unit When doing a water test on DWV systems during rough-in plumbing, each section shall be filled with water to a point not less than _____ feet above the highest fitting in that section. 5 (Water shall be held in the section under test for 15 minutes. The system shall prove leak free by visual inspection.) When doing an air test on DWV systems during rough-in plumbing, the portion under test shall be maintained at _____ psi for _____ minutes. 5 & 15 Water service pipe shall be installed not less than _____ inches deep and not less than _____ inches below frost line. 12 & 6 Trenching installed parallel to footings shall not extend below the _____-degree bearing plane of the bottom edge of a wall or footing. 45 In plumbing systems, supports for 1-inch copper or copper allow tubing run horizontal shall not be spaced more than _____ feet apart. 6 (Review and know how to use this table.) Fixture tail pieces shall not be less than _____ inches in diameter for sinks, dishwashers, laundry tubs and similar fixtures. 1 1/2 (And not less than 1 1/4 inches in diameter for bidets, lavatories and similar fixtures. ) The center line of water closets or bidets shall not be set less than _____ inches from adjacent side walls or partitions. 15 There shall be at least _____ inches clearance in front of the water closet, bidet or lavatory to any wall, fixture or door. 21 Waste receptor standpipes shall extend a minimum of _____ inches and a maximum of _____ inches above the trap weir. 18 & 42 (Access shall be provides to all standpipe traps and drains for rodding.) Shower compartments shall have at least _____ square inches of interior cross-secrional area. 900 Lavatories shall have waste outlets not less than _____ inches in diameter. 1 1/4 (A strainer, pop-up stoper, crossbar or other device shall be provided to restrict the clear opening of the waste outlet.) Bathtubs shall be equipped with waste outlets and overflow outlets connected to piping at least _____ inches in diameter. 1 1/2 (The waste outlet shall be equipped with an approved stopper.) Sinks shall be provided with waste outlets not less than _____ inches in diameter. 1 1/2 (A strainer, crossbar or other device shall be provided to restrict the clear opening of the waste outlet.) Each compartment of a laundry tub shall be provided with a waste outlet not less than _____ inches in diameter. 1 1/2 (A strainer or crossbar to restrict the clear opening of the waste outlet.) Floor drains shall have waste outlets not less than _____ inches in diameter and a removable strainer. 2 (Floor drains shall not be located under or have their access restricted by permanently installed appliances.) Bottom fed tank-type water heaters and bottom fed tanks connected to water heaters shall have a _____ _____ valve installed. vacuum_relief (In compliance with ANSI Z21.22) The maximum static pressure OF A WATER SERVICE shall be _____ psi. 80 The minimum size water service pipe shall be _____ inch. 3/4 A _____-_____ fire sprinkler system shall be seperate and independent from the water distribution system. stand alone (A multipurpose fire sprinkler system shall supply domestic water to both fire sprinklers and plumbing fixtures.) The fire sprinkler water supply shall provide the required design flow rate for _____ minutes for one-story dwellings less than _____ square feet in area. 7 & 2000 Where chlorine is uses for disinfection in nonpotable water systems, the water shall contain not more than _____ ppm of chloramines or free chlorine. 4 The drainage fixture unit (d.f.u.) value of a dishwasher is _____. 2 Any combination of fixtures within two BATHROOM GROUPS located on the same floor level are _____ to be vented by a horizontal wet vent. permitted Electrical panelboards and overcurrent devices shall not be located in _____. clothes closets, bathrooms or over the steps of a stairway. Overhead service-drop conductors shall have a vertical clearance of not less than ____ feet above the roof surface. 8 (Review all of the exceptions in this section) The markings for identification of disconnecting means shall have the durability to withstand the _____ involved. environment Underground service laterals that are not encased in concrete and that are buried 18 inches or more below grade shall have their location identified by a _____ _____. warning ribbon (Placed in the trench at least 12 inches above the underground installation) Receptacles shall be installed so that no point along the floor line in any wall space is more than _____ feet, measured horizontally, from an outlet in that space. 6 (This is the 6/12 rule: 6 feet from any door opening and every 12 feet after that, measured along the wall.) Kitchen countertop receptacles shall be installed so that no point along the wall line is more than _____ inches from a receptacle. 24 (This is the 2/4 rule: 2 feet from any opening and every 4 feet after that.) At least one receptacle outlet in bathrooms is required to be within _____ inches of each lavatory basin. 36 (The receptacle shall be located no more than 12 inches below the top of the basin.) There shall be a wall switch at each floor to control stairway lighting where the stairway has _____ or more risers. six Nonmetallic boxes shall be used only with cable wiring methods with entirely nonmetallic sheaths, flexible cords and nonmetallic raceways. (True/False) True (Read the two exceptions in this section. Review Tables E3904.6(1) through E3904.6(10).) In calculating box fill, each No. 12 AWG conductor shall require _____ cubic inches free space within the box. 2.25 Unused openings in cabinets and panelboards shall be effectively _____ to afford protection equivalent to that of the wall of the cabinet. closed (This means open knockouts are not allowed.) The _____ shall not be considered as an effective ground-fault current path. earth Switches shall not be more than _____ feet _____ inches above the floor or working platform when the switch is in its highest position. 6 & 7 (Also applies to circuit breakers used as switches.) Receptacles installed on 15- and 20-ampere-rated branch circuits shall be of the _____ type. grounding Recessed incandescent fixtures shall have _____ protection. thermal (Know the two exceptions in this section) In clothes closets, surface-mounted incandescent luminaires shall have _____ inches minimum clearance from the nearest point of storage space. 12 (This is measured horizontally and changes to 6 inches for surface mounted/recessed fluorescent and recessed incandescent fixtures.) A luminaire that weighs more than _____ pounds or exceeds 16 inches in any dimension shall not be supported by the screw shell of a lampholder. 6 Flexible cords for kitchen range hoods shall be _____ inches minimum and _____ inches maximum length. 18 & 36 Ceiling-suspended paddle fans shall be supported _____ of the outlet box. independently Rod and pipe electrodes shall be not less than _____ feet in length. 8 Insulated conductors and cables exposed to direct rays of the sun shall be listed and labeled as _____. sunlight resistant Conductors in NM cable assemblies shall be rated at _____ °C. 90 (The 90°C rating shall be permitted to be used for ampacity correction and adjustment purposes provided that the final corrected or adjusted ampacity does not exceed that for a 60°C rated conductor.) A minimum of _____ _____ branch circuit shall be provided to supply the bathroom receptacle outlet(s). Such circuits shall have no other outlets. one 20-amp (Read the exception in this section for supplying each bathroom with its own 20-ampere circuit.) A minimum of one _____-ampere-rated branch circuit shall be provided for receptacles located in the laundry area and shall serve only receptacle outlets in the laundry area. 20 (Receptacles for appliances like the washer shall be located within 6 feet of the appliance location. See section E3901.5.) A minimum of _____ 20-ampere-rated branch circuits shall be provided to serve all wall and floor receptacle outlets located in the kitchen, pantry, breakfast area, dining area, or similar area of a dwelling. two Branch circuit ratings for space-heating and water-heating appliances shall be considered _____ loads. continuous The rating of any one cord-and-plug-connected utilization equipment shall not exceed _____ percent of the branch-circuit ampere rating. 80 Over residential property and driveways, service-drop conductors shall have _____ feet minimum clearance above final grade. 12 (Review the other clearance requirements in this section.) In no case shall the point of attachment for service-drop conductors be less than _____ feet above finished grade. 10 Interior metal water piping located more than _____ feet from the point of entrance to the building shall not be used as part of the grounding electrode system. 5 Above-ground service-entrance cables subject to physical damage shall be protected by Schedule _____ PVC conduit. 80 (Or rigid metal conduit, intermediate conduit, electrical metallic tubing or other approved means.) Bonding shall be provided where necessary to ensure electrical _____. continuity (...and the capacity to conduct safely any fault current likely to be imposed. All mechanical elements used to terminate a grounding electrode conductor or bonding jumper to the grounding electrodes shall be _____. accessible (When not buried or concrete encased.) Where raceways are installed in wet locations above grade, the interior of such raceways shall be considered to be a _____ location. wet (Insulated conductors and cables installed in raceways in wet locations above grade shall be listed for use in wet locations.) Cords that supply swimming pool equipment shall have a copper equipment grounding conductor not smaller than No. _____ AWG. 12 Masonry chimney walls or chimney flue linings shall not change in size or shape within _____ inches above or below where the chimney passes through floor, ceiling or roof components. 6 Chimneys shall extend at least _____ feet higher than any portion of a building within _____ feet. 2 & 10 (But shall not be less than 3 feet above the highest point where the chimney passes through the roof.) Masonry chimney walls shall be constructed of SOLID MASONRY units or hollow masonry units grouted solid with not less than a _____-inch nominal thickness. 4 ANy portion of a masonry chimney located in the interior of a building or within an exterior wall shall have a minimum air space clearance to combustibles of _____ inches. 2 (Review the exceptions in this section.) Exterior masonry chimneys that pass through a soffit or cornice shall have a minimum air space clearance of _____ inch. 1 (Note that the chimney must be located entirely outside the exterior walls of the building.) Footings for masonry chimneys shall be constructed of concrete or SOLID MASONRY at least _____ inches thick. 12 (And shall extend at least 6 inches beyond the face of the foundation or support wall on all sides.) The minimum thickness of masonry fireplace hearths shall be _____ inches. 4 Where a masonry fireplace opening is less than 6 square feet, hearth extensions shall extend at least _____ inches in front of and at least _____ inches beyond each side of the fireplace opening. 16 & 8 For masonry fireplace openings 6 square feet or larger, hearth extensions shall extend at least _____ inches in front of and at least _____ inches beyond each side of the fireplace opening. 20 & 12 All wood beams, joists, studs and other combustible material shall have a clearance of not less than _____ inches from the front faces and sides of masonry fireplaces. 2 (... and not less than 4 inches from the back of masonry fireplaces. Review the four exceptions in this section.) Combustible material within _____ inches of the fireplace opening shall not project ore than 1/8 inch for each 1-inch distance from such opening. 12 The purpose of this code to establish _____ requirements to safeguard the public safety, health and general welfare. minimum A permit is not required for one-story detached accessory structures provided that the floor area does not exceed _____ square feet. 200 Fences that are _____ feet or less in height do not require permits. 7 Unattached decks not exceeding _____ square feet in area, that are not more than _____ inches above grade do not require a permit. 200 & 30 (Provided the decks do not serve the exit door required by Section R311.4.) Wall and ceiling finishes shall have a flame spread index of not greater than ______. 200 In combustible construction, fireblocking shall be provided to cut off all concealed draft openings and to form an effective fire barrier between _____. stories All habitable rooms shall be provided with aggregate glazing area of not less than ____ percent of the floor area of such rooms. 8 (Review the 3 exceptions to the 8-percent requirement.) TFor natural ventilation for habitable rooms, the minimum openable area to the outdoors shall be ____ percent of the floor area being ventilated. 4 (Natural ventilation shall be through windows, doors, louvers, or other approved openings to the outdoor air. Review the exception for mechanical ventilation.) Bathrooms ... shall be provided with aggregate glazing area in windows of not less than _____ square feet, one-half of which must be openable. 3 (See exception where a local exhaust system is provided.) Where the air infiltration rate of a dwelling unit is no more than _____ air changes per hour when tested, the dwelling unit shall be provided with _____ mechanical ventilation. 5 & whole-house (See section M1507.3.) Dwelling units shall be provided with heating facilities capable of maintaining a minimum room temperature of _____ °F. (Required where the winter design temperature in Table R301.2(1) is below 60°F.) 68 (At a point 3 feet above the floor and 2 feet from exterior walls in all habitable rooms. Portable space heaters shall not be used to achieve compliance with this section.) For rooms with sloped ceilings, at least _____ percent of the required floor area of the room must have a ceiling height of not less than 7 feet. 50 Bathrooms, toilet rooms and laundry rooms shall have a minimum ceiling height of _____ feet _____ inches. 6 & 8 Portions of BASEMENTS that do not contain HABITABLE SPACE or shall have a ceiling height of not less than _____ feet _____ inches. 6 & 8 (See allowance for 6 feet 4 inches height at beams, girders and ducts.) A clearance of at least _____ inches shall be provided at the front of a shower opening. 24 Glazing at the side of a stairway where the bottom exposed edge of the glazing is less than _____ inches above the plane of the adjacent walking surface must be safety glazing. 36 (See the exceptions.) Glazing less than _____ inches above the landing at the bottom of a stairway and within _____ inches of the bottom tread must be safety glazing. 36 & 60 (See the exception.) BASEMENTS, habitable attics and every sleeping room shall have at least one operable _____ _____ and _____. emergency escape rescue opening All emergency escape and rescue openings shall have a minimum net clear opening of _____ square feet. minimum net clear opening height shall be _____ inches. Minimum net clear opening width shall be _____ inches. 5.7, 24 & 20 (Exception: Grade floor openings shall have a minimum net clear opening of 5 sq. ft.) The landing on the exterior side of the required egress door is permitted to be a maximum of _____ inches below the top of the threshold provided the door does not swing over the landing. 7 3/4 (Storm and screen doors shall be permitted to swing over all exterior stairs and landings.) The minimum width of a hallway shall be not less than _____ feet. 3 Handrails shall not project more than _____ inches on either side of the stairway. 4 1/2 A flight of stairs shall not have a vertical rise larger than _____ inches between floor levels or landings. 147 There shall be a floor or _____ at the top and bottom of each stairway. landing (Exception: At the top of an interior flight of stairs, including stairs in an enclosed garage, provided a door does not swing over the stairs.) For stairs with a straight run, the landing shall have a minimum dimension of _____ inches measured in the direction of travel. 36 Ramps shall have a maximum slope of _____ unit vertical in _____ units horizontal (8.3-percent slope where serving the required egress door). 1:12 (Exception: Where it is technically infeasible to comply because of site constraints, ramps may have a maximum slope of one unit vertical in eight units horizontal (12.5-percent slope.) Stairways shall not be less than _____ inches in clear width at all points above the permitted handrail height and below the required headroom height. 36 (Exception: Spiral stairs complying with Section R311.7.10.1.) Is plastic composite material permitted for use as exterior stair treads? Yes (Shall comply with the provisions of Section R507.3) On stairways, the maximum riser height shall be _____ inches. 7 3/4 On stairways, the minimum tread depth shall be _____ inches. 10 On stairways, the greatest riser height within any flight of stairs shall not exceed the smallest by more than ______ inch. 3/8 On stairways, the greatest tread depth within any fligt of stairs shall not exceed the smallest by more than ______ inch. 3/8 A nosing projection not less than _____ inch but not more than _____ inches shall be provided on stairways with solid risers. 3/4 & 1 1/4 The minimum headroom in all parts of the stairway shall not be less than _____ feet _____ inches. 6 & 8 On spiral stairways, the minimum width shall be _____ inches. The rise shall be no more than _____ inches between treads. A minimum headroom of _____ feet _____ inches shall be provided. 26, 9 1/2, 6 & 6 (Each tread having a 7 1/2" minimum tread width at 12" from the narrow edge.) Handrails height shall be a minimum of _____ inches and maximum of _____ inches. 34 & 38 (Review the exceptions) Handrails adjacent to a wall shall have a space of not less than _____ inches between the wall and the handrails. 1 1/2 Type I handrails with a circular cross section shall have an outside diameter of at least _____ inches and not greater than _____ inches. 1 1/4 & 2 Open sided walking surfaces located more than _____ inches above the floor or grade below, shall have guards not less than _____ inches in height. 30 & 36 (Walking surface height is measured vertically to the floor or grade below at any point within 36 inches horizontally to the edge of the open side.) Required GUARDS shall not have openings from the walking surface to the required GUARD height that allow passage of a sphere _____ inches in diameter. 4 (See the two exceptions.) An automatic fire sprinkler system is not required when _____ or _____ _____ are made to existing townhouses that do not have a sprinkler system. additions & alterations Smoke alarms shall be installed in the following locations: 1. _____ 2. _____ 3. _____ 1. In each sleeping room. 2. Outside each separate sleeping area. 3. On each additional story of the dwelling. (Basements and habitable attics require smoke detectors, but crawl spaces and uninhabitable attics do not.) Photoelectric smoke alarms shall not be installed less than _____ feet horizontally from a permanently installed cooking appliance. 6 (Unless it would prevent the placement of an alarm in complying location.) Required smoke alarms shall receive their primary power from the building wiring, and when primary power is interrupted, shall receive power from a _____. battery Physical interconnection of smoke alarms is not required where _____ _____ alarms are installed. listed wireless (All alarms must sound upon activation of one alarm.) For new construction, an approved carbon monoxide alarm shall be installed in what locations? Outside of each separate sleeping area in the immediate vicinity of the bedrooms (CO alarms are not required if there are no fuel-fired appliances and no attached garage.) Foam plastic shall have a flame-spread index of not more than _____ and shall have a smoke-developed index of not more than _____. 75 & 450 Foam plastic shall be separated from the interior of a building by an approved _____ _____ of minimum _____ -inch gypsum wallboard. thermal barrier & 1/2 (Also acceptable is minimum 23/32 -inch wood structural panels or a material that is tested in accordance with NFPA 275.) A thermal barrier is not required for foam plastic insulation in an attic that is entered only for purposes of _____ or _____. repairs or maintenance (The foam plastic insulation must be protected with approved ignition barrier materials.) In areas where the probability of termite infestation is "very heavy," the clearance between foam plastics installed above GRADE and exposed earth shall be at least _____ inches. 6 DWELLING UNITS in two-family dwellings shall be separated from each other by wall and/or floor assemblies having not less than _____-hour fire-resistance rating. 1 (A rating of 1/2-hour is permitted in sprinklered buildings.) Protection of wood and wood-based products from _____ shall be provided in specified locations by the use of naturally durable wood or wood that is preservative-treated. decay (Preservative treatment shall be in accordance with AWPA U1 for the species, product, preservative and end use.) Address numbers shall be a minimum of _____ inches high with a minimum stroke width of _____ inch. 4 & 1/2 Where there are _____ or more dwelling units in a single structure, the accessibility provisions of IBC Chapter 11 for Group R-3 shall apply. four In flood hazard areas, enclosed areas below the design flood elevation shall be used solely for: 1. _____ or 2. _____ or 3. _____. 1. Parking of vehicles 2. Building access 3. Storage Photovoltaic panels installed on dwellings shall not be located less than _____ feet below the roof ridge. 3 (Required for fire department smoke ventilation operations unless alternative ventilation approved.) The design and construction of pools and spas shall comply with _____ _____ _____ _____ _____ _____. International Swimming Pool and Spa Code® The GRADE away from foundation walls shall fall a minimum of _____ inches within the first _____ feet. 6 & 10 (See the exception)