الفهرس 
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Abstract
This research is concerned with improving the bearing
capacity of granular soil beneath strip footing by using
plastic geo-grids as a soil reinforcement. A loading frame and
a plain-strain soil bin were prepared for testing a footing
resting on soil. Effect of geo-grid parameters on soil response
and bearing capacity of soil were experimentally investigated.
The parameters studied were depth, length and number of geogrids
beneath the footing.
The experimental data are reduced in forms of tables and
curves to show the relationships between footing load and
settlement. The optimum depth, length and arrangement of geogrid
beneath the footing are determined. The shape of soil
distortion during the footing loading are also investigated.