Concrete precast buildings are less common in regions where there are earthquakes because: Question 3 options: concrete is relatively heavy which creates large forces when subjected to ground shaking the connection between precast members can have limited strength that may not be adequate for seismic forces the code limits the types of precast building in regions of high seismic regions all of the above

Concrete

10

Which of the following is not an advantage of precast construction?   Question 4 options:   the concrete members are precise due to controlled casting environment facilitate construction   structural members can be easily transported by truck to reduce construction time   reuse of forms can make for economical construction   as they arrive already cured, members can be installed immediately upon delivery

If the overall temperature of the concrete exceeds the concrete may flash set. O 120F O 100F O 110F O 90F