Hardscape & GradingCâu 67 / 100
A retaining wall's footing or leveling pad should be placed on what?
a.Loose topsoil
b.A layer of dry leaves
c.Compacted, level base material at proper depth
d.A single row of bricks
Giải thích
The base or leveling pad of a retaining wall must rest on compacted, level base material set at the correct depth so the wall does not settle or lean. A poor base is a leading cause of wall failure. Getting the first course level and solid is essential for the whole wall.
Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Compaction of subgrade soil before hardscape is measured against what standard reference?
- On expansive clay soils, hardscape and foundations are at risk because the soil does what?
- A dry-stack (mortarless) segmental block wall relies on what for stability?
- Directing a downspout's discharge onto a splash block or into a pipe that carries it away from the house prevents what?
- Permeable pavers differ from standard pavers because they do what?
- On a steep planted slope, which practice BEST controls erosion during establishment?
Cập nhật gần nhất: · quy trình kiểm tra
Đội Ngũ Biên Tập PrepPass · Đối chiếu với California CSLB C-27 Landscaping Trade Exam · Quy trình kiểm tra