(c) Percent passing No. 200 sieve for an A-7-6 soil: and the diameter of a standard plate used in plate loading tests is inches. (d) The Corps of Engineers define modulus of subgrade reaction "k" as:
(c) Percent passing No. 200 sieve for an A-7-6 soil: and the diameter of a standard plate used in plate loading tests is inches. (d) The Corps of Engineers define modulus of subgrade reaction "k" as:
Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN:9781305635180
Author:Braja M. Das, Nagaratnam Sivakugan
Publisher:Braja M. Das, Nagaratnam Sivakugan
Chapter3: Weight-volume Relationships And Plasticity
Section: Chapter Questions
Problem 3.1P
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Can anyone help with questions C to J ?
Transcribed Image Text:Food for thought
(a) CBR of a high quality well-graded crushed stone
base course materials:
and “Modulus of subgrade reaction" for an A-2-5 silty
sand (SM):
(b) From a CBR test, we can obtain
_pci.
and
characteristics of
a soil; R value is obtained from a
test;
and Cl is short
for static
which is
correlated to CBR.
(c) Percent passing No. 200 sieve for an A-7-6 soil:
and the diameter of a
standard plate used in plate loading tests is
inches.
(d) The Corps of Engineers define modulus of
subgrade reaction "k" as:
(e) In the design of rigid pavements, any correlation of
soil modulus with the modulus of subgrade
reaction "k" has to include
as an additional variable.
(f) GPR:
(g) Log CBR = 0.84 – 1.26 * Log (PR). What is PR?
(h) SASW:
(i) The Hamboldt
(HSG) is claimed to be a man-portable
instrument that provides a simple, rapid, and precise
means of directly measuring in-situ soil modulus.
(i) Sketch and define AREA term used in back-
calculation:
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