Ahit, Practice Test One

two basic forces individual structural components are subject are? {Ans: compression/tension}the ground immediately adjacent to the foundation should be? {Ans: sloped away from the foundation at a rate of 1" per ft. for at least the first 6 ft}the recommended minimum clearance between a floor joist and the dirt floor of a crawl space without having to use treated lumber is? {Ans: 18"}what is the purpose of an accumulator? {Ans: keep liquid refrigerant out of the compressor}the function of a fan /limit switch is to? {Ans: control when the fan comes on or off and shut off the burners if the fan overheats.}the Hartford Loop in a steam system? {Ans: Precludes siphon action if the unit develops a leak}what siding has the tendency to expand and contract the most? {Ans: vinyl}a drain that gurgles or belches as it drains water may be a symptom of? {Ans: a missing vent}if cracks appear serious you must suggest? {Ans: further investigation by an engineer}Efflorescence {Ans: is a white salty deposit which appears on many masonry walls and Floors}what is the lightest-weight copper pipe? {Ans: Type M}which of the following is not part