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Quality Control in Flexible Pavements:
The quality control needed for Flexible Pavements covers the following tests :
(a) Density and Moisture content of sub-grade.
(b) Strength, shape, stripping tests for aggregates.
(c) Strict control over temperature of bitumen, mix.
(d) Amount of binder sprayed in prime coat, tack coat and surface dressing.
(e) Quantity of aggregates spread in surface dressing.
(f) Density and thickness of bituminous macadam, dense bituminous macadam, bituminous concrete and semi dense bituminous carpet.
(g) Marshall Stability values of BC, DBM and SDBC. (h) Profile and longitudinal levels.
Geometric Design Of Roads: Geometric design of roads deals with elements such as cross-section, horizontal and vertical alignment, sight distances, lateral and vertical cleara
Q. Sand cone test – suitable for all soils? Sand cone (replacement) test is generally carried out to determine the in-situ and compacted density of soils. This testing method i
how to read the levelling staff
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Q. What is Admixtures? These are the substance which are added to the concrete to improve its qualities either its placing or in its subsequent performance. An admixture may be
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Define Superposition Method 1. Remove enough redundant supports to reduce the structure to a statically determinate condition 2. Calculate the deflections at the previous l
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The head (energy) loss in the piping system between points 1 and 7 is the most nearly. Solution: 3 ft. The difference between point 1 and point 7 = 10 ƒt - 7 ƒt = 3 ƒt
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