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Latest Civil Engineering Articles

What is Right of Way - Definition & Factors Affecting RoW

The right of way is the total land area acquired for the construction of the roadway. Its width should be enough to accommodate all the elements of the roadway cross section, any future widening of the road and any public utility facilities that will be installed along the roadway. Right of way is the area of the road acquired for carriages way + other

Types of GeoTextiles

Woven geotextiles have interlacing filaments or yarns in two perpendicular directions - the longitudinal (or warp) direction and the crosswise (or weft) direction. Woven geotextiles often have greater tensile strength in the warp direction than the weft. Whereas non-woven fabrics are formed by linking filaments using:
By Haseeb Jamal - Oct 03, 2019

Factors Affecting Soil Compaction

As water is added to a soil ( at low moisture content) it becomes easier for the particles to move past one another during the application of the compacting forces. As the soil compacts the voids are reduced and this causes the dry unit weight ( or dry density) to increase. Increased compactive effort enables greater dry unit weights to be achieved
By Haseeb Jamal - Oct 03, 2019

Comparison of Coarse-Grained and Fine-Grained Soils for Engineering Use

The main groups of soils for engineering purposes are coarse-grained soils — sand and gravels — and fine-grained soils — silts and clays. It is important to know the differences between fine-grained and coarse-grained soils so that to make a decision related to soil composition and particle sizes.
By Haseeb Jamal - Oct 01, 2019

Unified Soil Classification System - USCS Chart

The Unified Soil Classification System is based on the airfield soil classification system developed by Casagrande during World War II. With some modification it was jointly adopted by several U.S. government agencies in 1952. Additional refinements were made and it is currently standardized as ASTM D 2487-93. It is used in the U.S. and much
By Haseeb Jamal - Oct 01, 2019

AASHTO Soil Classification System - AASHTO Chart

The AASHTO Soil Classification System classifies soils into seven primary groups, named A-1 through A-7, based on their relative expected quality for road embankments, sub-grades, sub-bases, and bases. Some of the groups are in turn divided into subgroups, such as A-1-a and A-1-b. Furthermore, a Group Index may be calculated to quantify

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