QUESTIONS AND ANSWERS SET A+
✔✔Trench boxes are the best shoring option when.... - ✔✔working in very unstable
ground
✔✔The operator needs to avoid positioning the trench box too... - ✔✔high
✔✔If the trench box is more than ____ feet above the pipe, the ditch will be unsafe -
✔✔five
✔✔What equipment works well in several feet of slimy mud? - ✔✔Tracked backhoe
✔✔When soil is disturbed, it.... - ✔✔swells
✔✔When soil is compacted, it..... - ✔✔shrinks/compacts
✔✔The bottom surface of footings may have a slope not exceeding... - ✔✔1:10 or 10%
✔✔Foundation walls require __ lbs. per sq yard of cement - ✔✔3 lbs
✔✔A load bearing stud may be notched up to ___% of their depth - ✔✔25% (1/4)
✔✔A non-load bearing stud may be notched up to ___% of their depth - ✔✔40%
✔✔For veneer ties, use No. ___ gage for strand wire and No. ___ gage for sheet metal.
- ✔✔Strand wire No. 9 gage
Sheet metal No. 22 gage
✔✔How far must a hearth extend if the hearth is <6 sqft? - ✔✔16 in (front)
8 in (sides)