Free General Contractor License Building Codes and Standards Questions and Answers — Questions and Answers
Question 1: A contractor is building a new single-story office space with a calculated occupant load of 65 people. According to the International Building Code (IBC), what is the minimum number of exits required from this space?
- One
- Two (Correct answer)
- Three
- Four
Correct answer: Two
The International Building Code generally requires a minimum of two exits when the occupant load of a space exceeds 49. Since the occupant load is 65, at least two exits are mandatory to provide adequate means of egress in an emergency.
Question 2: In the International Building Code (IBC), which construction type is characterized by non-combustible exterior walls and interior building elements made of solid or laminated wood without concealed spaces (heavy timber)?
- Type I (Fire-Resistive)
- Type V (Wood-Frame)
- Type IV (Heavy Timber) (Correct answer)
- Type II (Non-combustible)
Correct answer: Type IV (Heavy Timber)
Type IV construction, often called Heavy Timber (HT) or 'mill construction', requires noncombustible exterior walls and interior structural elements made of heavy timber. This design provides a degree of fire resistance by using large-dimension wood members that char slowly in a fire.
Question 3: A general contractor is installing an access ramp to the entrance of a public library. To comply with the Americans with Disabilities Act (ADA) Standards for Accessible Design, what is the maximum allowable running slope for the new ramp?
- 1:8 (1 inch of rise for every 8 inches of run)
- 1:10 (1 inch of rise for every 10 inches of run)
- 1:14 (1 inch of rise for every 14 inches of run)
- 1:12 (1 inch of rise for every 12 inches of run) (Correct answer)
Correct answer: 1:12 (1 inch of rise for every 12 inches of run)
The ADA Standards for Accessible Design mandate that the maximum running slope for a ramp in new construction cannot be steeper than 1:12. This ratio ensures the ramp is not too steep for individuals using wheelchairs or other mobility aids.
Question 4: A contractor has completed the foundation and slab-on-grade for a new retail store, including the installation of under-slab plumbing and electrical conduit. Before proceeding with wall framing, which of the following inspections is typically required?
- Final Inspection
- Framing Inspection
- Footing and Foundation Inspection (Correct answer)
- Insulation Inspection
Correct answer: Footing and Foundation Inspection
The footing and foundation inspection is performed after excavation and placement of forms and reinforcement but before concrete is poured. In many jurisdictions, this also includes an under-slab inspection for plumbing and electrical work that will be concealed by the slab. This must be approved before framing can begin.
Question 5: A project's plans are governed by both a state-adopted building code and a more restrictive local municipal amendment. In a situation where the local code requires a higher fire-resistance rating for a specific wall assembly than the state code, which requirement must the contractor follow?
- The state code, as it has broader jurisdiction
- The contractor's choice, with owner approval
- The more restrictive local municipal amendment (Correct answer)
- The least restrictive requirement to save costs
Correct answer: The more restrictive local municipal amendment
When building codes are adopted, the rule is to follow the most restrictive requirement. Local jurisdictions (cities, counties) can amend state or model codes, and if their amendment is stricter, it takes precedence for all construction within that jurisdiction.
Question 6: According to the International Building Code (IBC) occupancy classifications, a building primarily used as a restaurant for the consumption of food and drink would fall under which group?
- Group A (Assembly) (Correct answer)
- Group B (Business)
- Group M (Mercantile)
- Group R (Residential)
Correct answer: Group A (Assembly)
Group A (Assembly) occupancies are for the gathering of people for purposes such as recreation, food or drink consumption, or worship. Restaurants, banquet halls, and taverns are specifically classified as Group A-2.
Free General Contractor License Building Codes and Standards Questions and Answers
A contractor is building a new single-story office space with a calculated occupant load of 65 people.
According to the International Building Code (IBC), what is the minimum number of exits required from this space?