subgrade

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sub·grade (s

)

The level layer of rock or earth upon which the foundation of a road or railway is laid.

subgrade [ˈsʌbˌgreɪd]

(Engineering / Civil Engineering) the ground beneath a roadway or pavement

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sub			of Akron) and Wang (civil and environmental engineering, Virginia Tech) include research articles for fellow engineers on asphalt cracking under wet and dry conditions, new methods for roughness quantification of concrete joints and cracks, fatigue testing for hot mix asphalt and formulations for subgrade soil compaction. Pavements and materials; modeling, testing, and performance; ... by SciTech Book News The researchers installed 10 TDR sensors in the base and subgrade layers at each of the 70 SMP test sites monitored as part of the LTPP program. Long Term Pavement Performance computed parameter: moisture content ... by Public Roads Even in dry weather, the subgrade may remain wet or damp indefinitely. Asphalt driveways made easier, Part II by Units			subfigure subfloor subflooring subfossil subfreezing subfusc Subfuscous Subfusk Subgelatinous Subgeneric subgenre subgenus subgenus Azalea subgenus Azaleastrum subgenus Calliopsis subgenus Chen subgenus Pastor subgenus Poinciana subglacial Subglobose Subglobular Subglossal Subglottic Subglumaceous Subgovernor subgrade Subgranular subgravity subgross subgroup subgum subha subharmonic Subhastation subhead subheading Subhepatic Subhornblendic subhuman Subhumerate Subhyaloid Subhyoidean Subic Bay subimago Subincusation subindex Subindicate Subindication Subindividual Subinduce Subinfer			subgingival scaling subgingival scaling subgingival scaling subgingival scaling subgingival space subgingival space subgingival space subgingival space subglacial subglacial Subglacial Antarctic Lake Exploration Subglacial Antarctic Lake Exploration Group of Specialists subglacial moraine subglacially subglacially subglenoid Subglobose Subglobular subglossal subglossal Subglottic Subglottic subglottic laryngitis subglottic laryngitis subglottic laryngitis Subglottic stenosis Subglottic stenosis Subglottic stenosis Subglumaceous Subgovernor subgrade subgrade modulus subgrade reaction Subgradient subgradient wind subgrain Subgranular Subgranular zone subgraph subgravity subgraywacke Subgrid Scale subgrondation subgross subgroup subgroup subgroup Subgroup on Data Utilization Subgroup on Marine Climatology Subgroup on Nuclear Export Coordination subgrouped subgrouped subgrouped subgrouping subgrouping subgrouping subgroups subgroups subgroups Subgroups of Curculionidae Subgroups of Curculionidae

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subgrade