1.Which isn\'t a Type-C soil (compressive strength ≤0.5 tsf)?
1.哪一个不是 C 型土（抗压强度≤ 0.5 tsf）？
2.When is the right time to float a concrete surface?
2.什么时候抹平混凝土表面最合适？
3.Which soil type includes unstable dry rock angular gravel and sandy loam with 0.5-1.5 tsf strength?
3.哪种土壤类型包括不稳定的干岩石、角砾石和强度为 0.5-1.5 tsf 的沙壤土？
4.What\'s the smallest gap needed between untreated joists and rough ground?
4.未经处理的托梁与粗糙地面之间所需的最小间隙是多少？
5.What\'s the top consideration for residential building layout?
5.住宅建筑布局的首要考虑因素是什么？
6.What\'s crucial when grading a building site?
6.对建筑工地进行平整时，关键因素是什么？
7.What tool is used in concrete work?
7.混凝土施工中使用什么工具？
8.Is it okay to nail hardwood flooring directly to a concrete slab?
8.可以将硬木地板直接钉在混凝土板上吗？
9.In which scenario is a stepped foundation suitable?
9.哪种情况下适合使用阶梯式地基？
10.How can one determine the type of concrete to use?
10.如何确定要使用的混凝土类型？
