1.Refer to the structural diagram. Determine the support reactions at R1 and R2 for the beam loading condition shown.
1.参考结构图。根据图示梁荷载条件，确定梁支座R1和R2的支反力。
2.Refer to the figure. Determine the total amount of concrete required to construct the channel if the channel length is one-half mile.
2.参考图纸。如果水渠长度为半英里，计算建造该水渠所需混凝土总量。
3.A retaining wall requires approximately 365 cubic yards of concrete. If the ready-mix concrete cost is $158 per cubic yard, determine the total concrete material cost.
3.一个挡土墙工程大约需要365立方码混凝土。如果商品混凝土价格为158美元/立方码，计算混凝土材料总成本。
4.An average residential household consumes approximately 400 gallons of water per day. A city water facility contains 1.5 million gallons of available raw water. Estimate how many homes can be supplied
4.一个普通住宅家庭每天平均消耗约400加仑水。一座城市供水设施拥有150万加仑可用原水储量。估算该水量可以供应多少户家庭。
5.Convert 1,700 gallons of water into an equivalent volume expressed in cubic yards.
5.将1,700加仑水转换为等效体积（立方码）。
6.Refer to the figure. Ignoring the self-weight of the concrete column, the column transfers a vertical load of 80,000 pounds to the foundation. If the allowable soil bearing pressure is 4,000 pounds per
6.参考图纸。忽略混凝土柱自身重量，该柱向基础传递80,000磅的竖向荷载。如果允许土壤承载压力为4,000磅/平方英尺，确定所需最小方形基础尺寸。
