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100+ Free NM CID GB-98 Practice Questions

Prepare for the New Mexico CID GB-98 General Building Contractor Examination exam with instant access — no signup required.

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2026 Statistics

Key Facts: NM CID GB-98 Exam

180 Q

Official Combined Questions

PSI NM Contractor Bulletin 4/3/2026

75%

Passing Score Per Part

PSI NM Contractor Bulletin 4/3/2026

USD 269.06

Combination Exam Fee

PSI NM Contractor Bulletin 4/3/2026

2 parts

Official Exam Structure

PSI NM Contractor Bulletin 4/3/2026

NM CID GB-98 is a two-part PSI combination totaling 180 questions (80+100), 75% per part, USD 269.06 (bulletin 4/3/2026).

Sample NM CID GB-98 Practice Questions

Try these sample questions to test your NM CID GB-98 exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Per 2021 IRC R401.3, lots shall be graded so the finish grade falls a minimum of how much within the first 10 feet away from the foundation wall?
A.2 inches
B.4 inches
C.6 inches
D.12 inches
Explanation: 2021 IRC R401.3 requires surface water to drain away from foundation walls, with the grade falling a minimum of 6 inches within the first 10 feet. That 5-percent slope keeps stormwater from ponding against the stem wall or slab edge. Where 10 feet of fall is not available, an approved drain or swale must still carry water away from the dwelling.
2Per 2021 IRC R403.1.6, wood sill plates on a continuous concrete foundation shall be anchored with bolts of at least which diameter?
A.3/8 inch
B.1/2 inch
C.5/8 inch
D.3/4 inch
Explanation: IRC R403.1.6 requires 1/2-inch-diameter anchor bolts extending at least 7 inches into concrete or grouted masonry cells. A nut and washer must be tightened on each bolt. Approved foundation straps of equivalent capacity are permitted, but the default bolted connection is 1/2 inch.
3Per 2021 IRC R403.1.6, what is the maximum on-center spacing of foundation anchor bolts along a wood sill plate?
A.4 feet
B.6 feet
C.8 feet
D.10 feet
Explanation: R403.1.6 spaces bolts a maximum of 6 feet on center, with at least two bolts per plate section and one bolt not more than 12 inches (and not closer than seven bolt diameters) from each end. High-wind or seismic braced-wall requirements may tighten that spacing, but 6 feet is the general IRC maximum.
4A 40-foot continuous treated sill plate is set on a residential stem wall. Using 2021 IRC R403.1.6 (6-foot maximum spacing and one bolt within 12 inches of each end), what is the minimum number of 1/2-inch bolts required?
A.6 bolts
B.7 bolts
C.8 bolts
D.9 bolts
Explanation: Place a bolt 12 inches from each end (at 1 foot and 39 feet). The 38 feet between those end bolts must be divided into spaces of not more than 6 feet, which requires six interior bolts and eight bolts total. Eight bolts keep every space at or under 6 feet and satisfy the two-bolt-per-plate rule.
5A residential footing trench is 45 feet long, 2 feet wide, and 18 inches deep. How many cubic yards of excavation are in the trench (bank measure, no swell)?
A.3.3 cubic yards
B.4.0 cubic yards
C.5.0 cubic yards
D.6.8 cubic yards
Explanation: Convert 18 inches to 1.5 feet. Volume = 45 × 2 × 1.5 = 135 cubic feet. Divide by 27 cubic feet per cubic yard to obtain 5.0 cubic yards. Bank measure does not add swell; haul quantity would be larger after the soil is excavated and loosened.
6Per 2021 IRC R506.1, what is the minimum thickness of a concrete slab-on-grade floor?
A.2-1/2 inches
B.3 inches
C.3-1/2 inches
D.4 inches
Explanation: IRC R506.1 requires concrete slab-on-ground floors to be at least 3-1/2 inches thick. Thicker slabs are common for garages and point loads, but 3-1/2 inches is the residential code minimum for the dwelling slab itself.
7A No. 5 reinforcing bar has which nominal diameter?
A.3/8 inch
B.1/2 inch
C.5/8 inch
D.3/4 inch
Explanation: Soft-metric bar numbers are eighths of an inch of nominal diameter. A No. 5 bar is 5/8 inch, a No. 4 is 1/2 inch, and a No. 6 is 3/4 inch. Diameter is the first check on a bar-size question before cover or spacing is applied.
8Per ACI 318 cover rules used with the IRC/IBC concrete chapters, what is the minimum concrete cover for reinforcement cast against and permanently exposed to earth?
A.3/4 inch
B.1-1/2 inches
C.2 inches
D.3 inches
Explanation: ACI 318 requires 3 inches of cover for reinforcement cast against and permanently exposed to earth, such as the bottom of a footing poured in an unformed trench. Formed surfaces exposed to earth or weather use smaller covers (typically 1-1/2 or 2 inches by bar size). Do not apply slab-interior 3/4-inch cover to a dirt-cast footing.
9A 24-foot by 36-foot residential garage slab is 4 inches thick. How many cubic yards of concrete are required, with no waste allowance?
A.8.0 cubic yards
B.10.7 cubic yards
C.12.0 cubic yards
D.14.2 cubic yards
Explanation: Thickness is 4/12 = 0.333 foot. Volume = 24 × 36 × 0.333 = 288 cubic feet. 288 ÷ 27 = 10.67 cubic yards, reported as 10.7. A 5 to 10 percent waste factor would be added on a bid, but the neat volume is 10.7 cubic yards.
10A contractor will place 240 lineal feet of No. 4 bars in a residential footing. Using 0.668 pounds per foot for No. 4 bar, what is the steel weight to the nearest pound?
A.80 pounds
B.120 pounds
C.160 pounds
D.250 pounds
Explanation: No. 4 bar weighs 0.668 lb/ft. 240 × 0.668 = 160.3 pounds, which rounds to 160 pounds. A common field shortcut is 2/3 pound per foot for No. 4, which also yields about 160 pounds.

About the NM CID GB-98 Exam

The New Mexico CID GB-98 examination is the official two-part PSI combination for the general building contractor classification. Part 1 is the GB-2 residential examination (80 questions, 225 minutes). Part 2 covers commercial general building (100 questions, 310 minutes) using NMAC Title 14, New Mexico Commercial Building Code NMAC 14.7.2 (2021), IBC 2021, and the remaining Part 2 bulletin list. Each part requires 75%. The combination fee is USD 269.06 (bulletin updated 4/3/2026). This English-language MCQ bank is a study aid for the combined GB-98 identity; it is not an official PSI form and is distinct from the generic nm-general-contractor practice route.

Assessment

Two-part combination that includes the GB-2 examination. Candidates must pass both parts.

Time Limit

535 minutes across two parts (225 + 310)

Passing Score

75% on each part (60/80 and 75/100 points)

Exam Fee

USD 269.06 combination; USD 134.53 per part retake (PSI Services LLC (for New Mexico Construction Industries Division))

NM CID GB-98 Exam Content Outline

44%

Part 1 GB-2 Residential Building

Residential sitework, concrete, masonry, carpentry, roofing, associated trades, code/plans/estimating, OSHA (80 official items)

56%

Part 2 General Building

Commercial sitework, concrete, masonry, carpentry, metals, roofing, associated trades, general code/plans/estimating, OSHA (100 official items)

How to Pass the NM CID GB-98 Exam

What You Need to Know

  • Passing score: 75% on each part (60/80 and 75/100 points)
  • Assessment: Two-part combination that includes the GB-2 examination. Candidates must pass both parts.
  • Time limit: 535 minutes across two parts (225 + 310)
  • Exam fee: USD 269.06 combination; USD 134.53 per part retake

Keys to Passing

  • 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 GB-98 Study Tips from Top Performers

1Part 2 general code/plan reading/estimating is 27 of 100 official items — the single largest commercial slice
2This bank is an English-language MCQ study aid, not an official two-part PSI simulation

Frequently Asked Questions

How is GB-98 structured?

PSI administers GB-98 as one two-part combination that includes the GB-2 examination. Part 1 is 80 questions in 225 minutes; Part 2 is 100 questions in 310 minutes. You must pass both parts at 75%. Retake only failed parts at USD 134.53.