General B Contractor Trade Exam 2025/2026 | 100+ Verified Questions with Answers | Roofing, Framing, ADA, Electrical, Septic, Title 24 – Contractor License

This document is a complete practice guide for the General B Contractor Trade Exam for the 2025/2026 licensing cycle, containing over 100 verified exam-style questions with correct answers. It is built to closely follow the California Contractors State License Board (CSLB) exam blueprint, covering essential building trades knowledge, safety codes, and regulatory requirements. The content addresses real-world jobsite scenarios and includes references to Title 24, ADA accessibility standards, fire safety, structural framing, mechanical/electrical systems, roofing, and excavation. Major topics covered include: Building site preparation and grading Notching and boring rules for joists and studs in both bearing and non-bearing walls Septic system prerequisites: soil type, percolation test, water table Roofing standards: slope, underlayment, roll roofing overlap, flashing, vent placement California-specific codes: Title 24 energy efficiency, 60-minute fire doors, ADA compliant dimensions Framing and structural terms: glulam sizing, cantilevers, collar beams, decking, cripple studs Concrete and foundations: slab PSI ratings, furring channels, screeding, rebar splicing Electrical systems: amp probe usage, panel balancing, 240V wiring, GFI outlets, NEC rules Safety procedures: trench bracing, scaffold railings, welding precautions, asbestos handling Finish materials and techniques: drywall depth, taping sequence, stucco coats, fire-rated sheetrock Plumbing & HVAC: dielectric coupling, vapor barrier selection, vent flashing, copper to galvanized transitions Carpentry details: door ramps, shower drain heights, weatherstripping, hammer types Insulation, glass, and vapor barriers: greenboard usage, plate glass restrictions, fiberglass installation Accessibility regulations: ADA door handles, toilet clearance, switch height, floor transitions This document is ideal for: Candidates for the General Building Contractor License (Class B) Trade school students in Construction Technology, Carpentry, or Residential Building programs Workers preparing for California State Contractor exams Supervisors and site managers seeking a license or refresher Vocational programs and licensing instructors needing exam-aligned materials Keywords: General B contractor, CSLB exam, Title 24, ADA code, joist notching, drywall installation, slab PSI, trench safety, scaffolding railings, septic system test, framing rules, cantilever, vapor barrier, roll roofing, GFI wiring, electrical panel, fire door, collar beam, rebar splice, furring channel, construction license