A 12.80 lb sample of quartzite was found to have the following amounts of material retained on each sieve/pan: ½ in. 0 lb, 3/8 in.= 1.20 lb, No. 4 = 4.87 lb, No. 8 = 3.58 lb, No. 162.09 lb, No. 30 0.90 lb, pan = 0.27 lb. a. Calculate the fineness modulus of the aggregate. b. Is this sieve analysis valid for acceptance purposes? Explain why. c. What is the ASTM size number of this aggregate?
A 12.80 lb sample of quartzite was found to have the following amounts of material retained on each sieve/pan: ½ in. 0 lb, 3/8 in.= 1.20 lb, No. 4 = 4.87 lb, No. 8 = 3.58 lb, No. 162.09 lb, No. 30 0.90 lb, pan = 0.27 lb. a. Calculate the fineness modulus of the aggregate. b. Is this sieve analysis valid for acceptance purposes? Explain why. c. What is the ASTM size number of this aggregate?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A 12.80 lb sample of quartzite was found to have the following amounts of
material retained on each sieve/pan:
1/2 in. 0 lb, 3/8 in.= 1.20 lb, No. 4 = 4.87 lb, No. 8 = 3.58 lb, No. 16 = 2.09 lb,
No. 30 0.90 lb, pan = 0.27 lb.
a. Calculate the fineness modulus of the aggregate.
b. Is this sieve analysis valid for acceptance purposes? Explain why.
c. What is the ASTM size number of this aggregate?
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