CONSTRUCTION MATERIALS TESTING SOILS LEVEL IV EXAM REVIEW SOLVED QUESTIONS WITH ACCURATE ANSWERS

CONSTRUCTION MATERIALS TESTING SOILS
LEVEL IV EXAM REVIEW SOLVED QUESTIONS
WITH ACCURATE ANSWERS


◉ What practice is used for sampling aggregate?
Answer: D75


◉ The investigation of potential sample material should be
performed by....? D75
Answer: A responsible, trained and experienced person


◉ What should a stockpile be visually inspected of? D75
Answer: Discernable Variations


◉ Where shall a sample be obtained where practicable?D75
Answer: From the finished product


◉ After a sample is obtained what shall not be done unless required
for testing purposes? D75
Answer: Further crushing or manual reduction

, ◉ What shall be done if there are any discernable Variations in a
stockpile? D75
Answer: Corrective action shall be taken to establish homogeneity in
the material


◉ If it is necessary to indicate the degree of variation in a stockpile,
what shall be done? D75
Answer: Separate samples shall be drawn from separate areas of the
pile


◉ What increases when sampling from the beginning or the final
few tons of a conveyor belt? D75
Answer: The potential of obtaining segregated material


◉ When should method A be used in a standard proctor? D698
Answer: When 25% or less material is retained on a No. 4 sieve


◉ When should method B be used for standard proctor? D698
Answer: When 25% or less material is retained on a 3/8" sieve


◉ When should method C be used for standard proctor? D698
Answer: When 30% or less material is retained on a 3/4" sieve