ICC Commercial Combination Inspector (C5)

Per IBC Section 302, which occupancy group classifies a building used for office, professional, or service-type transactions including outpatient clinics and post-secondary educational facilities?

• AGroup A-3
• BGroup B
• CGroup M
• DGroup E

Under IBC Table 601, what is the required fire-resistance rating for the primary structural frame of a Type II-A building?

• A0 hour
• B1 hour
• C2 hours
• D3 hours

Per IBC Section 1004.5, what occupant load factor (gross) is used to calculate the occupant load of a business area?

• A100 sq ft per occupant
• B150 sq ft per occupant
• C200 sq ft per occupant
• D300 sq ft per occupant

Per IBC Section 1011.5.2, what is the maximum allowed riser height and minimum tread depth for stairways serving an occupant load of 50 or more?

• A7 inch riser / 11 inch tread
• B7.75 inch riser / 10 inch tread
• C8 inch riser / 9 inch tread
• D8.25 inch riser / 9 inch tread

Per IBC Section 1020.2, what is the minimum corridor width for a corridor serving an occupant load of 50 or more in a non-healthcare commercial building?

• A36 inches
• B44 inches
• C60 inches
• D72 inches

Per IBC Section 1010.1.1, what is the minimum clear width of an egress door measured between the face of the door and the stop with the door open 90 degrees?

• A28 inches
• B30 inches
• C32 inches
• D36 inches

Per IBC Section 903.2.1.2, an automatic sprinkler system is required throughout a Group A-2 occupancy when the fire area exceeds what threshold?

• A3,000 sq ft
• B5,000 sq ft
• C7,500 sq ft
• D12,000 sq ft

Per IBC Section 1004.5, what occupant load factor is used for unconcentrated assembly areas with tables and chairs (such as conference rooms)?

• A7 sq ft net
• B15 sq ft net
• C30 sq ft net
• D50 sq ft net

Per IBC Section 1009 and Chapter 11, how many accessible means of egress are required from each accessible space?

• AOne
• BAt least two where two or more means of egress are required from any accessible space
• CThree
• DOne per 100 occupants

Per IBC Section 1109.2, what is the minimum number of accessible toilet stalls required in a multi-stall restroom?

• AAt least one wheelchair accessible compartment
• BTwo wheelchair accessible compartments
• COne ambulatory accessible compartment only
• DEvery stall must be accessible

Per IBC Section 716, what is the required fire protection rating for an opening protective in a 1-hour fire barrier (other than a shaft or exit enclosure)?

• A20-minute rated assembly
• B45-minute rated assembly
• C60-minute rated assembly
• D90-minute rated assembly

Per IBC Section 705.5, exterior walls with a fire separation distance of 5 feet or less must have a fire-resistance rating measured from which side?

• AOutside only
• BInside only
• CBoth sides
• DFrom the side of the wall facing the building it protects

Per IBC Section 504 and Table 504.3, the maximum building height in feet for a Group B occupancy of Type II-B construction is:

• A55 feet
• B65 feet
• C75 feet
• D85 feet

Per IBC Section 1607, what is the minimum uniformly distributed live load for office floors (above first floor) outside of file and computer rooms?

• A40 psf
• B50 psf
• C60 psf
• D80 psf

Per IBC Chapter 17, which type of special inspection requires inspection of welding, including verification of welder qualifications and weld procedures?

• AConcrete inspection
• BMasonry inspection
• CStructural steel inspection
• DSoil inspection

Per IBC Section 1011.12, when is a stairway required to have a handrail on both sides?

• AAlways
• BOnly when serving an occupant load greater than 50
• COn all stairways except those within dwelling units
• DOnly when the rise exceeds 30 inches

Per IBC Section 1009.6, when is an area of refuge required?

• AAt every floor of a building
• BAt every elevator landing
• CAt each story of a multi-story building required to be accessible
• DOnly in I-2 occupancies

Per IBC Table 803.13, what is the maximum flame spread index for interior wall and ceiling finish in Group B exit access corridors with a sprinkler system?

• AClass A (0-25)
• BClass B (26-75)
• CClass C (76-200)
• DNo limit

Per IBC Section 1607.14, what is the minimum design load for guards (in the direction perpendicular to the top rail) in commercial buildings?

• A20 lb/lf or 200 lb concentrated
• B30 lb/lf or 100 lb concentrated
• C50 lb/lf or 200 lb concentrated
• D100 lb/lf or 200 lb concentrated

Per IBC Section 1011.7.4, what is the maximum vertical distance permitted between landings on an interior stairway?

• A8 feet
• B10 feet
• C12 feet
• D15 feet

Per IBC Section 705.8, what is the maximum allowable area of unprotected openings in an exterior wall of an unsprinklered building with a fire separation distance of 10 feet?

• A10 percent
• B15 percent
• C25 percent
• DNot permitted

Per IBC Chapter 11 and ICC A117.1, what is the maximum running slope of an accessible route (other than a ramp)?

• A1:12
• B1:20
• C1:50
• D1:100

Per IBC Section 1015.3, what is the minimum height of guards required at open-sided walking surfaces and floor openings located more than 30 inches above the floor or grade below?

• A36 inches
• B42 inches
• C48 inches
• D54 inches

Per IBC Section 903.3.1.1, an automatic sprinkler system installed in accordance with NFPA 13 is designed for which protection level?

• ALight hazard only
• BOrdinary hazard only
• CAll hazard classifications appropriate to the occupancy
• DExtra hazard only

Per IBC Section 1006.3.3, what is the maximum occupant load allowed on a story with a single exit from a Group B occupancy with a sprinkler system?

• A29 occupants
• B49 occupants
• C75 occupants
• D100 occupants

Per NEC 110.26(A)(1), the minimum depth of working space in front of a 480Y/277V panelboard with exposed live parts on one side and grounded parts (concrete wall) on the other side is:

• A3 feet
• B3.5 feet
• C4 feet
• D4.5 feet

Per NEC Article 100, a 'continuous load' is one where the maximum current is expected to continue for at least:

• A1 hour
• B2 hours
• C3 hours
• D4 hours

Per NEC 230.95, what is the minimum ground-fault protection rating required on a 480Y/277V solidly grounded wye service rated 1000 amperes or more?

• A100 amperes
• B600 amperes
• C1200 amperes maximum pickup
• DEqual to service rating

Per NEC 408.36, a lighting and appliance branch-circuit panelboard is one having more than how many percent of its overcurrent devices protecting circuits rated 30 A or less with neutral connections?

• A10 percent
• B30 percent
• C50 percent
• D10 percent under the 2017 edition; redefined in 2020+

Per NEC 210.8(B), in commercial occupancies, GFCI protection is required for 125V single-phase 15- and 20-amp receptacles installed in which of the following locations?

• AOffice cubicles
• BBathrooms, kitchens, rooftops, outdoors, sinks within 6 ft, and similar locations
• CConference rooms only
• DHospital patient bedrooms

Per NEC 220.12, the general lighting load for an office building is calculated using what unit load (volt-amperes per square foot)?

• A1 VA/sq ft
• B2 VA/sq ft
• C3.5 VA/sq ft
• D5 VA/sq ft

Per NEC 240.4(B), the 'next standard size up' rounding rule for overcurrent protection does NOT apply when the ampacity of the conductors corresponds to a standard rating and the OCPD exceeds:

• A100 amperes
• B200 amperes
• C400 amperes
• D800 amperes

Per NEC 250.122 and Table 250.122, what is the minimum size copper equipment grounding conductor for a 200-ampere overcurrent device?

• A8 AWG
• B6 AWG
• C4 AWG
• D2 AWG

Per NEC 430.32(A)(1), the running overload protection for a motor with a service factor of 1.15 or more must be set at no more than what percent of the motor nameplate full-load current?

• A115%
• B125%
• C140%
• D175%

Per NEC 450.21(B), an indoor dry-type transformer rated over 112.5 kVA but not over 35 kV must be installed in a room with a fire-resistance rating of at least:

• ANo rating required
• B1 hour
• C2 hours
• D3 hours

Per NEC 501.10, which wiring method is acceptable in a Class I, Division 1 hazardous location?

• AType NM cable
• BType MC cable rated for Class I, Division 1
• CSchedule 40 PVC conduit underground only
• DType AC cable

Per NEC 110.14(C)(1), at what temperature rating must terminations be sized for circuits 100 A or less unless the equipment is listed for higher temperature use?

• A60°C
• B75°C
• C90°C
• DAny rating shown on the conductor

Per NEC 408.4, each circuit and modification to a circuit in a panelboard must be:

• AColor-coded
• BLabeled with the load served using legible markings
• CIdentified with a circuit breaker number only
• DPhotographed for the inspector

Per NEC 700.12, what is the maximum allowable transfer time from normal to emergency power for life-safety emergency systems?

• A1 second
• B10 seconds
• C60 seconds
• D120 seconds

Per NEC 314.16, what is the minimum cubic-inch volume required for a metallic device box containing two 12 AWG conductors entering through one cable, with one device installed?

• A6.0 cu in
• B9.0 cu in
• C13.5 cu in
• D18.0 cu in

Per NEC 215.2(A)(1), feeders supplying continuous loads must have an ampacity of not less than:

• A100% of continuous load + 100% of non-continuous load
• B125% of continuous load + 100% of non-continuous load
• C100% of continuous load + 125% of non-continuous load
• D125% of total connected load

Per NEC 517.18, what is the minimum number of receptacles required at each patient bed location in a general care space (Category 2)?

• A2 receptacles
• B4 receptacles
• C8 receptacles
• D14 receptacles

Per NEC 250.66 and Table 250.66, the grounding electrode conductor for a service supplied by 500 kcmil copper service-entrance conductors must be at least:

• A2 AWG copper
• B1/0 AWG copper
• C2/0 AWG copper
• D3/0 AWG copper

Per NEC 210.6(C), branch circuits exceeding 120 volts between conductors but not exceeding 277 volts to ground are permitted to supply which of the following?

• ACord-and-plug-connected appliances up to 1440 VA
• BAuxiliary equipment of electric-discharge lamps and listed luminaires
• CHousehold electric ranges
• DResidential dwelling units only

Per NEC 110.16, what is required at field-marked equipment likely to require examination, adjustment, servicing, or maintenance while energized?

• AA QR code linking to manufacturer specs
• BAn arc-flash hazard warning label
• CA red 'Danger' sticker only
• DNothing — labeling is voluntary

Per NEC 230.70(A)(1), the service disconnecting means must be installed at a readily accessible location either outside the building or:

• AAnywhere inside the building
• BInside, nearest the point of entrance of the service conductors
• CWithin 10 ft of the meter base
• DOnly in the electrical room