Core TradesCâu 60 / 700
During site grading, best management practices such as silt fences and fiber rolls are installed PRIMARILY to:
a.Increase the compaction of the subgrade soil
b.Prevent sediment-laden runoff from leaving the site
c.Provide fall protection for workers on slopes
d.Mark property boundaries for the surveyor
Giải thích
Erosion and sediment control BMPs keep soil-laden stormwater from washing off the site into streets and waterways, meeting stormwater rules. They do not compact soil, protect workers from falls, or mark boundaries.
Trích dẫn luật: CALGreen, Title 24 Part 11 (Stormwater / Erosion Control)Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- A driveway rises 3 feet in elevation over a horizontal run of 60 feet. What is its slope expressed as a percent?
- A building pad requires 200 compacted cubic yards of engineered fill. If the borrow soil shrinks about 20 percent when compacted, how many bank (in-place) cubic yards must be excavated from the borrow site?
- A level is set up and a backsight of 5.20 feet is read on a benchmark at elevation 100.00 feet. A foresight of 3.40 feet is then read on a new point. What is the elevation of the new point?
- A slab-on-grade develops a network of random, map-like surface cracks within days of placement, but the cracks are shallow and do not reach the reinforcement. What is the MOST likely cause?
- After stripping the forms from a concrete wall, the contractor finds voids with exposed coarse aggregate and no paste in several areas near the base. This honeycombing was MOST likely caused by:
- A large slab pour is interrupted for 3 hours when the concrete supply is delayed. When placement resumes, a visible line forms where fresh concrete meets the partially set concrete. This cold joint is BEST prevented in future pours by:
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