Explain the aashto classification system, Civil Engineering

Assignment Help:

Explain the AASHTO Classification System  

1.  Identify the percent passing the No.10, No. 40, and No. 200 sieves. Identify the LL and PI of the fraction passing the No. 40 sieve.  

2.  Use AASHTO Classification Table. Move from left to right using process of elimination until the first group consistent with the laboratory data is identified. 

557_AASHTO Classification System.png

3.  Special Notes: 

a) For groups A-4, A-5, A-6 and A-7: Calculate the group index (GI) using the equation shown below the classification table.  If GI is negative, it is reported as zero.   

b) For group A-7, the Plastic Limit (PL = PI - LL) is the differentiating factor between A-7-5 and A-7-6.  This is expressed in terms of Plasticity Index (PI = LL - LL), which you already use for classification.


Related Discussions:- Explain the aashto classification system

Illustrate the term - failure due to rupture of steel, Failure Due to Ruptu...

Failure Due to Rupture of Steel This mode of  failure is likely in lightly reinforced concrete members in which the ultimate strength of  steel is attained before the concrete

Cross section diagram of urban road, cross section diagram of urban roan in...

cross section diagram of urban roan in embankment,in cut,in eight lane,in conjusted area,divided hihgway

Uses of alloys in daily life , What are the uses of alloys in daily life an...

What are the uses of alloys in daily life and how are alloys made? Ans) Alloying is not always done to make a 'superior' material, but to produce materials having a desired requ

Calculate the degree of saturation of the soil, A clay sample, having its n...

A clay sample, having its natural moisture content, weighs 0.333 N. The specific gravity of solids of this soil is 2.70. After oven-drying, the soil sample weighs 0.2025 N. The vol

Explain influence lines-reactions, Explain Influence lines-reactions 1....

Explain Influence lines-reactions 1.  Remove the support under investigation 2.  Displace the beam vertically a distance of 1 unit.  The resulting beam shape will be the sha

Explain the traffic safety - transportation, Explain the Traffic Safety - T...

Explain the Traffic Safety - Transportation Crash rates are normally considered better indicators of risk than crash frequencies.  a. Crash rates for intersections are norma

Environmental engineering, A nearly horizontal, 12 ft wide rectangular chan...

A nearly horizontal, 12 ft wide rectangular channel carries 60 cfs at a depth of 3.0 ft. The width of the channel is smoothly contracted to 6 ft at the downstream section. (a) Dete

IRC class 70R, What will be the structural weight per meter for IRC class 7...

What will be the structural weight per meter for IRC class 70r bridge

State the term - relaxation of stress in steel, State the term - Relaxation...

State the term - Relaxation of Stress in Steel If we keep a high-tensile steel wire stretched and maintained at a constant strain, the value of the force in the wire does not

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd