CSLB Class A — General Engineering (Trade Exam) — All Questions
6 questions
Which of these is a live load on bridge falsework?
- a.The weight of the forms
- b.The weight of the reinforcing steel
- c.The crew and their tools✓
- d.The weight of the concrete
Caltrans classes equipment, crew and tools as live load; concrete, reinforcing steel, forms and falsework are dead load.Caltrans Falsework Manual Ch. 3
A two-span continuous concrete beam is loaded downward. Where is it in tension directly over the middle support?
- a.At mid-depth only
- b.At the top✓
- c.It has no tension there
- d.At the bottom
Over an interior support of a continuous beam the top is stretched, so top bars are needed there; concrete cracks in tension.FEMA P-749
A building is open on its street side and has solid walls on the other three. What earthquake behavior is most likely?
- a.Twisting about its vertical axis✓
- b.Liquefaction of the foundation soil
- c.Resonance of the roof only
- d.Uniform sliding without rotation
Uneven distribution of walls creates a torsional irregularity; the building twists, increasing displacement at the open side.FEMA P-749
Why are closely spaced ties and hoops detailed in concrete columns?
- a.To speed concrete placement
- b.To reduce the columns' weight
- c.To replace the main bars
- d.To give the columns ductility✓
Confinement lets concrete members keep carrying load after deforming past peak strength — ductility.FEMA P-749
Which site is most prone to amplifying earthquake shaking?
- a.Hard rock near the surface
- b.Soft soils beside a bay✓
- c.Bedrock with thin topsoil
- d.A dense gravel ridge
Soft soils in river valleys and along lakes and bays tend to amplify shaking; hard rock sites experience less intense shaking.FEMA P-749
A 12-foot-wide slab edge is shored for a single floor with a total dead load of 40,000 pounds. What minimum lateral bracing load applies at that floor?
- a.4,000 pounds
- b.1,200 pounds✓
- c.800 pounds
- d.400 pounds
Cal/OSHA uses the greater of 100 pounds per lineal foot of floor edge (100 × 12 = 1,200) or 2% of the total dead load (800); 1,200 governs.Cal. Code Regs. tit. 8, 1717