Core TradesCâu 59 / 700
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.101.80 feet
b.98.20 feet
c.105.20 feet
d.108.60 feet
Giải thích
Height of instrument = 100.00 + 5.20 = 105.20 ft; the new point = 105.20 - 3.40 = 101.80 ft. Confusing which reading to add versus subtract produces the other values.
Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- For an excavation made in soft or unstable (Type C) soil, the MAXIMUM allowable slope (horizontal to vertical) is generally:
- 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?
- During site grading, best management practices such as silt fences and fiber rolls are installed PRIMARILY to:
- 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:
Cập nhật gần nhất: · quy trình kiểm tra
Đội Ngũ Biên Tập PrepPass · Đối chiếu với California CSLB General Building (B) Trade Examination · Quy trình kiểm tra