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

Plot vertical displacement - cantilever beam, 1. The cantilever beam-like s...

1. The cantilever beam-like structure  shown below is modeled  using  a 2 x 10 mesh of rectangular four-node plane stress elements of equal size. Do the following and compare with

Determine the required stirrup size and spacing requirement, A rectangular ...

A rectangular concrete beam is subjected to a factored design shear force of 200 kips.  For the beam shown below, determine the required stirrup size and spacing requirement. H = 3

Determine the value of the coefficient of permeability, Determine the value...

Determine the value of the coefficient of permeability A glass cylinder 5 cm internal diameter with a screen at the bottom is used as a falling head permeameter. The thickness

Design a 10 unit rapid sand filter system, Design a 10 unit rapid sand filt...

Design a 10 unit rapid sand filter system for a flow of 6.3 MGD with a filtration rate of 2 gpm/sq ft. and an L: W ratio of 1.3.   Design flow (Q) = 6.3 MGD = 6.3x106 gpd =

What is the role of sunfilter in building, QUESTION (a) Using an illu...

QUESTION (a) Using an illustration, describe what happens to sunrays when it passes through the atmosphere to reach the ground. (b) What is the role of a sunscreen/sunfil

Maintenance of earth roads, Maintenance of Earth Roads: The main task...

Maintenance of Earth Roads: The main task in maintaining the earth road is to ensure that cross-section is intact and is free from rutting, depressions and corrugations, and

Calculate the total passive earth resistance on the wall, A  retaining wall...

A  retaining wall, 4.5 m high, retains a soil with  c = 2 N/cm 2 ,  φ = 30° and g = 20 kN/m 3 , with horizontal surface level with the top of the wall. The backfill carries a surch

Explain about noise absorptive materials, Q. Explain about Noise absorptive...

Q. Explain about Noise absorptive materials? The fundamental mechanism of noise absorptive material is to change the acoustic energy into heat energy. Amount of heat produced i

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