Finish TradesCâu 465 / 700
When installing a floating laminate or engineered wood floor, why must a perimeter expansion gap (roughly 3/8 inch) be left at all walls?
a.To hide the flooring nails
b.To provide space for future plumbing
c.To allow the floor to expand and contract with humidity without buckling
d.To meet the fire-rating requirement of the assembly
Giải thích
Floating wood-based floors grow and shrink with humidity; the perimeter gap, later hidden by base trim, lets the field move without lifting or buckling. Floating floors are not nailed, the gap is not for plumbing, and it plays no role in fire rating.
Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- CALGreen requires that a specified percentage of installed resilient flooring meet an approved low-emission (CDPH) testing standard. This requirement is intended MAINLY to protect what?
- In a large ceramic tile installation, movement (expansion) joints are important MAINLY to accomplish what?
- When cement backer board is used as a tile substrate on a floor, how should the board joints be treated before setting tile?
- Under the North American Architectural Woodwork Standards, which grade level is the default typically specified for most quality commercial and residential architectural woodwork when the contract documents do not state otherwise?
- Glazing located within 60 inches horizontally of the walking surface of a stairway, landing, or ramp, and within a certain height, generally must be what?
- Apart from the minimum net clear opening area, an emergency escape and rescue window must also provide what MINIMUM net clear opening width and height?
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