CPII Code Requirements 5 — Questions and Answers
Question 1: Under the Americans with Disabilities Act (ADA) Standards for Accessible Design, what is the maximum cross slope permitted on a public accessible route (excluding ramps)?
- 1% (1:100)
- 2% (1:50) (Correct answer)
- 3% (1:33)
- 5% (1:20)
Correct answer: 2% (1:50)
ADA Standards limit cross slopes on accessible routes to a maximum of 2% (1:50) to prevent difficulty for wheelchair users and others with mobility impairments.
Question 2: Which section of the International Building Code (IBC) governs soils and foundations for public buildings, requiring soil investigations under certain conditions?
- Chapter 16 – Structural Design
- Chapter 18 – Soils and Foundations (Correct answer)
- Chapter 23 – Wood
- Chapter 33 – Safeguards During Construction
Correct answer: Chapter 18 – Soils and Foundations
IBC Chapter 18 addresses soils and foundations, including requirements for geotechnical investigations, allowable bearing capacities, and foundation design.
Question 3: A public infrastructure inspector is reviewing a stormwater management plan. Under EPA's Construction General Permit, which document must be prepared and implemented before earth-disturbing activities begin?
- Environmental Impact Statement (EIS)
- Stormwater Pollution Prevention Plan (SWPPP) (Correct answer)
- Spill Prevention Control and Countermeasure Plan (SPCC)
- Hazardous Materials Business Plan (HMBP)
Correct answer: Stormwater Pollution Prevention Plan (SWPPP)
The NPDES Construction General Permit requires operators to develop and implement a SWPPP that identifies BMPs to control stormwater discharges before construction begins.
Question 4: Under OSHA 1926 Subpart P, what is the maximum allowable depth for an excavation before a protective system (sloping, shoring, or shielding) is required?
- 3 feet
- 4 feet
- 5 feet (Correct answer)
- 6 feet
Correct answer: 5 feet
OSHA 1926.652 requires a protective system for all excavations 5 feet or deeper, unless made entirely in stable rock or a competent person determines no cave-in hazard exists.
Question 5: According to AASHTO T 99 (Proctor compaction test), the term 'maximum dry density' refers to:
- The density of soil at zero air voids
- The highest unit weight achieved at optimum moisture content (Correct answer)
- The in-place density measured after compaction
- The minimum density required by project specifications
Correct answer: The highest unit weight achieved at optimum moisture content
Maximum dry density is the peak unit weight of compacted soil achieved at the optimum moisture content as determined by the standard Proctor compaction curve.
Question 6: An inspector reviewing utility relocation plans finds that a gas main is proposed to cross a waterline with only 3 inches of vertical separation. Which code concern is most relevant?
- NFPA 58 pressure testing requirements
- Minimum separation requirements per local plumbing or utility codes (typically 12 inches) (Correct answer)
- OSHA trenching depth limits
- AWWA pipe bedding specifications
Correct answer: Minimum separation requirements per local plumbing or utility codes (typically 12 inches)
Most utility codes and standards require a minimum of 12 inches of vertical separation between gas mains and waterlines to prevent cross-contamination and facilitate maintenance.
Question 7: Under the National Bridge Inspection Standards (NBIS, 23 CFR 650), what is the required routine inspection interval for most public highway bridges?
- Every 6 months
- Every 12 months
- Every 24 months (Correct answer)
- Every 36 months
Correct answer: Every 24 months
NBIS (23 CFR 650 Subpart C) requires routine inspections of most public highway bridges at intervals not exceeding 24 months.
CPII Code Requirements 5
Under the Americans with Disabilities Act (ADA) Standards for Accessible Design, what is the maximum cross slope permitted on a public accessible route (excluding ramps)?