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Exam Review

Key Facts: NM CID GS-6 Exam

75%

Passing Score

PSI NM Contractor Bulletin 4/3/2026

30 Q

Official Exam Questions

PSI NM Contractor Bulletin 4/3/2026

120 min

Time Allowed

PSI NM Contractor Bulletin 4/3/2026

USD 68.88

PSI Exam Fee

PSI NM Contractor Bulletin 4/3/2026

NM CID GS-6 is a 30-question PSI door installation exam, 75% pass, 120 minutes, USD 68.88 (bulletin 4/3/2026).

Sample NM CID GS-6 Practice Questions

Try these sample questions to review concepts for the NM CID GS-6 exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1A prehung door unit typically includes which combination of components?
A.The door slab only, with hinges and lockset sold separately
B.The door slab already hung in a factory-assembled jamb with hinges installed
C.Only the lockset, strike, and threshold
D.Only the casing, stop, and weatherstripping
Explanation: A prehung door is a factory-assembled unit: the slab is already hung in its jamb on hinges, and the stop is usually in place. The installer sets the entire frame in the rough opening, shims it plumb, and then adds lockset, casing, and any weatherseals. A slab door is the leaf only and requires a field-hung frame.
2As a common carpentry rule of thumb from Carpentry and Building Construction practice, the rough opening for a standard prehung swing door is framed about how much larger than the door slab?
A.1/2 inch wider and 1/2 inch taller
B.2 inches wider and about 2 to 2-1/2 inches taller
C.4 inches wider and 4 inches taller
D.The same width and height as the slab
Explanation: The rough opening must leave room for both jambs, the head, shims, and a slight height allowance above the subfloor. A widely used field rule is door width plus 2 inches and door height plus about 2 to 2-1/2 inches. Always confirm the manufacturer's rough-opening chart before framing or ordering.
3What is the standard finished thickness of a typical interior residential wood swing door?
A.1 inch
B.1-3/8 inches
C.2-1/4 inches
D.3 inches
Explanation: Standard interior residential swing doors are 1-3/8 inches thick. Exterior, commercial, and most fire-rated doors are commonly 1-3/4 inches so they can accept heavier hardware and listed fire cores. Using an interior 1-3/8-inch slab in an exterior or rated opening is a common specification error.
4What is the standard finished thickness of a typical exterior residential entry door?
A.1-1/8 inches
B.1-3/8 inches
C.1-3/4 inches
D.2-1/2 inches
Explanation: Exterior residential entry doors are typically 1-3/4 inches thick. That extra thickness provides a deeper lock stile for deadbolts, better weather performance, and the core needed for many fire or wind listings. Interior 1-3/8-inch slabs are not a substitute at an exterior opening.
5In common U.S. door-size notation, what does a 3-0 / 6-8 door measure?
A.30 inches wide by 68 inches high
B.3 feet 0 inches wide by 6 feet 8 inches high
C.3 inches of stile by 6-8 hardware backset
D.36 millimeters wide by 68 millimeters high
Explanation: Door schedules use feet-and-inches shorthand: the first figure is width and the second is height. A 3-0 / 6-8 door is 3 feet 0 inches (36 inches) wide and 6 feet 8 inches (80 inches) high. That size is the usual dwelling entry door because it can produce the 32-inch clear opening required for the IRC egress door.
6Using the common field method, how is a swing door's hand determined?
A.Stand with your back to the hinge jamb and note which side the latch is on
B.Always call it right-hand if it is an exterior door
C.Measure the lockset backset and use 2-3/8 inches for left-hand
D.Use the color of the hinge finish
Explanation: A standard carpentry method is to stand in the opening with your back to the hinges and look toward the latch. If the latch is on your left, the door is left-hand; if it is on your right, it is right-hand. Reverse-hand (outswing) doors use the same hinge side but swing toward the viewer from the key side. Confirm handing before ordering a prehung unit.
7Per 2021 IRC R311.2, what is the minimum clear width of the required dwelling-unit egress door, measured with the door open 90 degrees?
A.24 inches
B.28 inches
C.32 inches
D.36 inches
Explanation: IRC R311.2 requires at least one side-hinged egress door with a clear width of not less than 32 inches, measured between the face of the door and the stop with the door open 90 degrees. A 36-inch (3-0) slab is the usual product that actually yields that clear opening after the door thickness and stop are deducted. Other interior doors are not required to meet this width.
8Per 2021 IRC R311.2, what is the minimum clear height of the required dwelling-unit egress door?
A.72 inches, measured to the underside of the header
B.76 inches, measured to the top of the slab
C.78 inches, measured from the top of the threshold to the bottom of the stop
D.84 inches, measured to the finished ceiling
Explanation: R311.2 requires a clear opening height of not less than 78 inches, measured from the top of the threshold to the bottom of the stop. An 80-inch (6-8) door is the usual product that meets this after the threshold and head stop are accounted for. Other dwelling doors are not required to meet this height.
9Per 2021 IBC 1010.1.1, what is the minimum clear opening width of a typical means-of-egress door?
A.28 inches
B.30 inches
C.32 inches
D.44 inches
Explanation: IBC 1010.1.1 requires a minimum clear opening width of 32 inches for a means-of-egress door, measured between the face of the door and the stop with the door open 90 degrees. Occupant-load capacity can demand a wider opening, but 32 inches is the general minimum. A 36-inch commercial leaf is commonly specified so the installed clear width stays at or above 32 inches.
10Per 2021 IBC 1010.1.1, what is the general minimum clear opening height of a means-of-egress door?
A.76 inches
B.78 inches
C.80 inches
D.96 inches
Explanation: IBC 1010.1.1 requires a minimum clear opening height of 80 inches for means-of-egress doors. That is 2 inches taller than the IRC dwelling egress-door height of 78 inches. Closers and stops may project slightly at the head, but the code still expects the listed clear-height minimum.

About the NM CID GS-6 Exam

The New Mexico CID GS-6 examination covers door installation. The official open-book PSI exam has 30 scored questions, a 75% passing standard (23 points), and 120 minutes allowed. Allowed references are Carpentry and Building Construction (2010 or 2016), IBC 2021, and IRC 2021. PSI lists the fee at USD 68.88 (bulletin updated 4/3/2026). This English-language MCQ bank is a study aid, not an official PSI form.

Exam sponsor: PSI Services LLC (for New Mexico Construction Industries Division). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Questions

30 questions

Time Limit

120 minutes

Passing Score

75% (23 of 30 points)

Exam / Certification Fees

USD 68.88

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

47%

Doors and Frames

Doors and frames (14 items)

30%

Doors Hardware

Door hardware (9 items)

13%

Special Doors

Special doors (4 items)

10%

Overhead Garage Doors

Overhead garage doors (3 items)

Preparing for the NM CID GS-6 Exam

What You Need to Know

  • Passing score: 75% (23 of 30 points)
  • Exam length: 30 questions
  • Time limit: 120 minutes
  • Exam / certification fees: USD 68.88 Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

NM CID GS-6: Suggested Study Strategy

1Doors and frames are 14 of 30 official items. Study IBC/IRC door, fire-door, and hardware chapters.
2This bank is an English-language MCQ study aid, not an official PSI form

Frequently Asked Questions

How many questions are on the NM GS-6 exam?

The official PSI examination has 30 scored questions. Passing is 75% (23 points) within 120 minutes (bulletin updated 4/3/2026).