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subgrade |
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subgrade [′səb‚grād] (civil engineering) The soil or rock leveled off to support the foundation of a structure. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Upheaval Frost heaves, swelling of base or subsurface or soils due to improper drainage, tree roots, or Depression decomposition of organic matter in subgrade or court, poor compaction of base or subbase. A new subgrade parking facility will more than double the available parking. Additionally, a permeable or non-permeable geotextile fabric should be used to allow exact amounts of water to either permeate or not permeate the subgrade, depending on the existing soil. |
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