NEW MEXICO (NM) GB-2 RESIDENTIAL BUILDING CONTRACTOR EXAM– QUESTIONS AND ANSWERS | VERIFIED
AND WELL DETAILED ANSWERS | PLUS RATIONALES | DOWNLOAD AND PASS | LATEST EXAM UPDATE
2026/2027
Core Domains
Sitework, Footings, and Foundations
Concrete and Reinforcement
Carpentry and Rough Framing
Masonry and General Code Compliance
Thermal and Moisture Protection
Doors, Windows, and Interior/Exterior Finishes
Plan Reading and Estimating
OSHA Safety and Jobsite Management
New Mexico-Specific Building Codes and Licensing Laws
Introduction
This comprehensive examination is designed to assess the knowledge and practical skills required for competent
practice as a residential building contractor in New Mexico. The test covers a wide array of topics, including structural
,integrity, building systems, energy conservation, project administration, and legal compliance, with a specific focus on
the New Mexico Residential Building Code. Candidates are evaluated through a mix of direct-knowledge questions and
complex, scenario-based problems that mirror real-world challenges. This assessment emphasizes the application of
professional judgment, ethical decision-making, and the ability to manage projects from inception to completion while
ensuring safety, quality, and adherence to all regulatory standards.
SECTION ONE: QUESTIONS 1–50
1. What is the minimum required compressive strength for concrete used in a residential foundation wall in New
Mexico, as per the standard building code?
A. 2,000 psi
B. 2,500 psi
C. 3,000 psi
D. 3,500 psi
🟢 Correct Answer: B. 2,500 psi
🔴 Explanation: The International Residential Code (IRC) and New Mexico Building Code require a minimum
compressive strength of 2,500 psi for concrete in foundation walls and other structural members to ensure adequate
,load-bearing capacity.
2. In a standard wood-framed wall, what is the primary function of a shear wall?
A. To support vertical loads from the roof
B. To resist lateral forces from wind and earthquakes
C. To provide a nailing surface for exterior siding
D. To insulate the building from thermal transfer
🟢 Correct Answer: B. To resist lateral forces from wind and earthquakes
🔴 Explanation: Shear walls are a critical structural element designed to transfer lateral loads (like those from seismic
events or high winds) to the foundation, preventing the building from racking or collapsing.
3. A contractor is preparing a bid for a new home. Which of the following is considered a direct cost?
A. The general contractor's salary
B. Lumber for framing
C. Office rent for the construction company
D. Liability insurance premium for the year
🟢 Correct Answer: B. Lumber for framing
, 🔴 Explanation: Direct costs are expenses that can be specifically attributed to a single project, such as materials,
labor, and equipment for that job. Lumber is a direct material cost.
4. What is the minimum size for a bedroom egress window in a new residential dwelling?
A. 5.0 square feet, 20 inches wide, 24 inches high
B. 5.7 square feet, 20 inches wide, 24 inches high
C. 5.0 square feet, 24 inches wide, 24 inches high
D. 5.7 square feet, 24 inches wide, 24 inches high
🟢 Correct Answer: B. 5.7 square feet, 20 inches wide, 24 inches high
🔴 Explanation: The IRC mandates that an egress window must have a minimum opening area of 5.7 square feet, a
minimum width of 20 inches, and a minimum height of 24 inches to allow for safe escape and rescue.
5. Which of the following is a critical element of a legally binding construction contract?
A. A handshake agreement
B. A detailed scope of work
C. A verbal promise from the homeowner
D. A notarized signature
🟢 Correct Answer: B. A detailed scope of work
AND WELL DETAILED ANSWERS | PLUS RATIONALES | DOWNLOAD AND PASS | LATEST EXAM UPDATE
2026/2027
Core Domains
Sitework, Footings, and Foundations
Concrete and Reinforcement
Carpentry and Rough Framing
Masonry and General Code Compliance
Thermal and Moisture Protection
Doors, Windows, and Interior/Exterior Finishes
Plan Reading and Estimating
OSHA Safety and Jobsite Management
New Mexico-Specific Building Codes and Licensing Laws
Introduction
This comprehensive examination is designed to assess the knowledge and practical skills required for competent
practice as a residential building contractor in New Mexico. The test covers a wide array of topics, including structural
,integrity, building systems, energy conservation, project administration, and legal compliance, with a specific focus on
the New Mexico Residential Building Code. Candidates are evaluated through a mix of direct-knowledge questions and
complex, scenario-based problems that mirror real-world challenges. This assessment emphasizes the application of
professional judgment, ethical decision-making, and the ability to manage projects from inception to completion while
ensuring safety, quality, and adherence to all regulatory standards.
SECTION ONE: QUESTIONS 1–50
1. What is the minimum required compressive strength for concrete used in a residential foundation wall in New
Mexico, as per the standard building code?
A. 2,000 psi
B. 2,500 psi
C. 3,000 psi
D. 3,500 psi
🟢 Correct Answer: B. 2,500 psi
🔴 Explanation: The International Residential Code (IRC) and New Mexico Building Code require a minimum
compressive strength of 2,500 psi for concrete in foundation walls and other structural members to ensure adequate
,load-bearing capacity.
2. In a standard wood-framed wall, what is the primary function of a shear wall?
A. To support vertical loads from the roof
B. To resist lateral forces from wind and earthquakes
C. To provide a nailing surface for exterior siding
D. To insulate the building from thermal transfer
🟢 Correct Answer: B. To resist lateral forces from wind and earthquakes
🔴 Explanation: Shear walls are a critical structural element designed to transfer lateral loads (like those from seismic
events or high winds) to the foundation, preventing the building from racking or collapsing.
3. A contractor is preparing a bid for a new home. Which of the following is considered a direct cost?
A. The general contractor's salary
B. Lumber for framing
C. Office rent for the construction company
D. Liability insurance premium for the year
🟢 Correct Answer: B. Lumber for framing
, 🔴 Explanation: Direct costs are expenses that can be specifically attributed to a single project, such as materials,
labor, and equipment for that job. Lumber is a direct material cost.
4. What is the minimum size for a bedroom egress window in a new residential dwelling?
A. 5.0 square feet, 20 inches wide, 24 inches high
B. 5.7 square feet, 20 inches wide, 24 inches high
C. 5.0 square feet, 24 inches wide, 24 inches high
D. 5.7 square feet, 24 inches wide, 24 inches high
🟢 Correct Answer: B. 5.7 square feet, 20 inches wide, 24 inches high
🔴 Explanation: The IRC mandates that an egress window must have a minimum opening area of 5.7 square feet, a
minimum width of 20 inches, and a minimum height of 24 inches to allow for safe escape and rescue.
5. Which of the following is a critical element of a legally binding construction contract?
A. A handshake agreement
B. A detailed scope of work
C. A verbal promise from the homeowner
D. A notarized signature
🟢 Correct Answer: B. A detailed scope of work
