1.What is the proper way to attach carpet to a concrete subfloor?
1.将地毯安装到混凝土地板上的正确方法是什么？
2.What does the concrete ratio 1:3:4 represent?
2.混凝土比例 1:3:4 代表什么？
3.When is the appropriate time to re - tighten the anchor bolts?
3.什么时候重新拧紧地脚螺栓比较合适？
4.What is the minimum embedment depth for anchor bolts in concrete?
4.地脚螺栓在混凝土中的最小埋置深度是多少？
5.Why is the slump test conducted?
5.为什么要进行坍落度试验？
6.Which tool is used to roughen up concrete?
6. 哪种工具可以用来打磨混凝土？
7.What is the minimum cover for rebar in a concrete footing cast against and permanently exposed to earth?
7.永久暴露在地面上的混凝土基础中，钢筋的最小保护层厚度是多少？
8.How soon should concrete be poured after mixing without additives?
8.不加添加剂的混凝土搅拌后多久可以浇筑？
9.Why should rebar stick out in the first pour during the construction of a retaining wall?
9.挡土墙施工时，为什么第一次浇筑时钢筋要伸出？
10.What does a high slump test result indicate?
10.坍落度试验结果高说明什么？
