ICC Exam Prep All Versions with
Solution 2025/2026 – Complete Building
Code Study Package with Verified
Questions and Test Bank Materials
Section 1: Building Official Exam (Questions 1-15)
Question 1
A set of plans shows a restaurant with 1560 square feet of space. Based on
occupant load calculations, how many toilet fixtures are required?
Correct ,,,,answer,,,,: 2
Rationale: For an A-2 occupancy (restaurant) per IBC Chapter 3, concentrated
tables and chairs use 15 sq ft per person. 1560 ÷ 15 = 104 occupants. Dividing by 2
(male/female) gives 52 per sex. IPC Chapter 4 requires 1 fixture per 75 persons for
restaurants, so each restroom needs 1 fixture, for a total of 2 restrooms .
Question 2
Corrugated stainless steel tubing (CSST) must comply with which standards?
Correct ,,,,answer,,,,: ANSI LC 1/CSA 6.26
,Rationale: CSST gas piping systems must meet ANSI LC 1/CSA 6.26 standards
for safety and performance in fuel gas distribution systems .
Question 3
Drainage tiles shall be placed on a minimum of how many inches of washed gravel
or crushed rock?
Correct ,,,,answer,,,,: 2 inches
Rationale: Proper drainage installation requires a minimum 2-inch bed of washed
gravel or crushed rock beneath drainage tiles to allow adequate water flow and
prevent clogging .
Question 4
Given a drawing of a square room with a large window, when would the window
require safety glazing?
Correct ,,,,answer,,,,: The glass is less than 18" above the walking surface
Rationale: Safety glazing is required when the glass bottom is less than 18 inches
above the walking surface, the glass area exceeds 9 square feet, and the glass is
within 36 inches of the walking surface .
Question 5
An art studio has 460 feet of track lighting. How many volt-amps are required?
,Correct ,,,,answer,,,,: 36,000 VA
Rationale: NEC 220.14(D) requires 150 VA for each 2 feet of track lighting. 480
lf ÷ 2' = 240 sections × 150 VA = 36,000 VA .
Question 6
What is the maximum length of flexible tubing used for a gas connector?
Correct ,,,,answer,,,,: 6 feet
Rationale: Per IRC G2422.1 (IFGC 402.4), flexible gas connectors cannot exceed
6 feet in length for residential appliances .
Question 7
What is the maximum horizontal spacing for support of 3/4" CPVC pipe?
Correct ,,,,answer,,,,: 3 feet
Rationale: CPVC piping requires support spacing based on pipe diameter. For
3/4" CPVC, the maximum horizontal support spacing is 3 feet to prevent sagging
and stress on joints .
Question 8
What is the minimum concrete compressive strength for a carport slab in areas
with moderate weather potential?
, Correct ,,,,answer,,,,: 3000 psi
Rationale: Concrete slabs exposed to weather require minimum compressive
strength of 3000 psi for durability in moderate climates .
Question 9
What is the minimum length of a Diagonal Wood Braced (DWB) wall panel on a 9'
wall?
Correct ,,,,answer,,,,: 48 inches
Rationale: Diagonal wood bracing panels must have a minimum length of 48
inches regardless of wall height to provide adequate lateral resistance .
Question 10
What is the maximum stud spacing for Diagonal Wood Bracing (DWB)?
Correct ,,,,answer,,,,: 24 inches
Rationale: DWB requires stud spacing not exceeding 24 inches on center to
ensure proper load transfer and bracing effectiveness .
Question 11
Given a sump pit with width and length of 18", what is the required depth?
Correct ,,,,answer,,,,: 24 inches
Solution 2025/2026 – Complete Building
Code Study Package with Verified
Questions and Test Bank Materials
Section 1: Building Official Exam (Questions 1-15)
Question 1
A set of plans shows a restaurant with 1560 square feet of space. Based on
occupant load calculations, how many toilet fixtures are required?
Correct ,,,,answer,,,,: 2
Rationale: For an A-2 occupancy (restaurant) per IBC Chapter 3, concentrated
tables and chairs use 15 sq ft per person. 1560 ÷ 15 = 104 occupants. Dividing by 2
(male/female) gives 52 per sex. IPC Chapter 4 requires 1 fixture per 75 persons for
restaurants, so each restroom needs 1 fixture, for a total of 2 restrooms .
Question 2
Corrugated stainless steel tubing (CSST) must comply with which standards?
Correct ,,,,answer,,,,: ANSI LC 1/CSA 6.26
,Rationale: CSST gas piping systems must meet ANSI LC 1/CSA 6.26 standards
for safety and performance in fuel gas distribution systems .
Question 3
Drainage tiles shall be placed on a minimum of how many inches of washed gravel
or crushed rock?
Correct ,,,,answer,,,,: 2 inches
Rationale: Proper drainage installation requires a minimum 2-inch bed of washed
gravel or crushed rock beneath drainage tiles to allow adequate water flow and
prevent clogging .
Question 4
Given a drawing of a square room with a large window, when would the window
require safety glazing?
Correct ,,,,answer,,,,: The glass is less than 18" above the walking surface
Rationale: Safety glazing is required when the glass bottom is less than 18 inches
above the walking surface, the glass area exceeds 9 square feet, and the glass is
within 36 inches of the walking surface .
Question 5
An art studio has 460 feet of track lighting. How many volt-amps are required?
,Correct ,,,,answer,,,,: 36,000 VA
Rationale: NEC 220.14(D) requires 150 VA for each 2 feet of track lighting. 480
lf ÷ 2' = 240 sections × 150 VA = 36,000 VA .
Question 6
What is the maximum length of flexible tubing used for a gas connector?
Correct ,,,,answer,,,,: 6 feet
Rationale: Per IRC G2422.1 (IFGC 402.4), flexible gas connectors cannot exceed
6 feet in length for residential appliances .
Question 7
What is the maximum horizontal spacing for support of 3/4" CPVC pipe?
Correct ,,,,answer,,,,: 3 feet
Rationale: CPVC piping requires support spacing based on pipe diameter. For
3/4" CPVC, the maximum horizontal support spacing is 3 feet to prevent sagging
and stress on joints .
Question 8
What is the minimum concrete compressive strength for a carport slab in areas
with moderate weather potential?
, Correct ,,,,answer,,,,: 3000 psi
Rationale: Concrete slabs exposed to weather require minimum compressive
strength of 3000 psi for durability in moderate climates .
Question 9
What is the minimum length of a Diagonal Wood Braced (DWB) wall panel on a 9'
wall?
Correct ,,,,answer,,,,: 48 inches
Rationale: Diagonal wood bracing panels must have a minimum length of 48
inches regardless of wall height to provide adequate lateral resistance .
Question 10
What is the maximum stud spacing for Diagonal Wood Bracing (DWB)?
Correct ,,,,answer,,,,: 24 inches
Rationale: DWB requires stud spacing not exceeding 24 inches on center to
ensure proper load transfer and bracing effectiveness .
Question 11
Given a sump pit with width and length of 18", what is the required depth?
Correct ,,,,answer,,,,: 24 inches
