Core TradesCâu 162 / 700
Structural fill placed under a building slab is typically required to be compacted to a MINIMUM relative compaction of about:
a.70%
b.80%
c.90%
d.100%
Giải thích
Engineered structural fill is generally compacted to at least 90% relative compaction (based on a laboratory maximum dry density) to limit settlement under the slab; critical areas may require 95%. 70% and 80% are too loose and would allow settling, while a sustained 100% is impractical to achieve uniformly.
Trích dẫn luật: 2025 CA Building Code, Chapter 18 (Soils and Foundations)Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Under current California Energy Code prescriptive requirements, wood-framed ceiling/attic insulation in most climate zones must reach a MINIMUM of about:
- A wall uses R-15 cavity batt insulation plus R-6 continuous exterior rigid insulation. Ignoring framing and air films, what is the combined nominal thermal resistance of these two insulation layers?
- A continuous water-resistive barrier (building paper or house wrap) installed behind exterior cladding functions primarily to:
- An excavation for a basement measures 30 ft long, 20 ft wide, and 3 ft deep. How many bank cubic yards of soil are removed?
- In construction surveying, a 'benchmark' is BEST described as:
- A contractor must haul away 100 bank cubic yards (in-place volume) of soil that has a swell factor of 25%. What loose volume must the trucks carry?
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