Chapter 7 of 85% of exam
Roadwork and Paving
Roadwork and Paving is about 5% of the exam, and CSLB lists one topic: base for highways, roads and parking lots. The PrepPass CSLB General Engineering (A) Study Guide covers this section in depth, with worked examples, named traps and a chapter quiz.
Aggregate base
Base goes on a compacted subgrade at grade, in thin layers, compacted to 95%.
Layers
Base over 0.50 foot is placed in at least two approximately equal layers; no compacted layer over 0.50 foot.
Caltrans Standard Specifications 2025, 26-1.03DTolerance
Finished base within 0.05 foot of grade.
Caltrans Standard Specifications 2025, 26-1.03ELime treatment
Apply above 35 degrees F, keep moisture above optimum, mellow 36 hours, compact to 95%.
Caltrans Standard Specifications 2025, 24-2.03Keep going: the full CSLB Class A — General Engineering (Trade Exam) guide covers every section of the exam. CSLB Class A General Engineering — Trade Exam Study Guide (2026) — PDF + EPUB, $24.99 · 14-day refund →
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