Improvements Questions and All
Correct Answers.
Why do tree stumps and root systems need to be completely dug out during site preparation? -
Answer they will decay and leave voids in the ground
What are a pair of horizontal boards nailed to posts at the corners of an excavation used as a
fastening for stretched strings to indicated the outlines of the excavation? - Answer batter
boards
What is removed and stockpiled on site before grading begins? - Answer topsoil
What describes all grading work and includes, excavation, rough grading and finish grading? -
Answer earthwork
What process removes existing soil to permit the construction of foundations and substructure?
- Answer excavation
During excavation, what is the maximum permanently cut slope percentage? - Answer 1.5
horizontal to 1 vertical (66%)
What is the maximum steepness for permanently filled slopes? - Answer 2:1
What describes removing and/or adding earth in order to bring the ground surface to a specific
elevation or profile? - Answer grading
What are the 2 types of grading? - Answer rough grading, finish grading
What type of grading describes the addition or removal of earth prior to the start of
construction? - Answer rough grading
What type of grading describes the final distribution of earth at the conclusion of construction?
- Answer finish grading
, What is the rate of rise or decent of a sloping surface? - Answer grade (gradient)
What is the usual accuracy of the finish grade? - Answer +/- 1"
What type of fill should be deposited in layers of 6-12" thick and compacted to avoid
settlement? - Answer backfill
What type of fill should be free of organic material that might later disintegrate and form voids?
- Answer backfill
What type fill should be free of rock or other material that could crack drain lines? - Answer
backfill
What transmits the building's loads to the soil? - Answer foundation
What part of the foundation is widened to spread loads over a larger area? - Answer footing
What the two categories of foundations? - Answer shallow and deep foundations
What type of foundation system is the most economical and used if the soils close to the
surface are of adequate strength? - Answer shallow spread footings
What are the 5 types of shallow spread footings? - Answer column footing, wall footing,
combined/cantilevered footing, mat/raft footing, boat footing
What type of spread footing has a square or rectangular pad that spreads the structural column
load over a larger area of soil? - Answer column footing
What type of spread footing is continuous and spreads the wall load over a larger area of soil? -
Answer wall footing
When a column footing abuts the property line, What type of spread footings are used to
connect the exterior column footing to the first interior column footing? - Answer
combined/cantilevered footing