Southern good roads . <^*. A View on Fourth Street, Wilmington, .N. C, Cement Gravel Construction 14 SOUTHERN GOOD ROADS June, 1915 watrons. provided with canvas covers for retaining tlieheat. As delivered the bituminous concrete shall havea temperature of at least 66° C. (150° F.). Jlaterialhaving a lower temperature tlian this shall not be laidupon the foundation. Rollers used on the bituminous concrete and theseal coat shall be well balanced, self-propelled, tandemrollers, weighing between ten (10) and twelve (12)tons each. Each shall have a compression under therear roller of between tw
Southern good roads . <^*. A View on Fourth Street, Wilmington, .N. C, Cement Gravel Construction 14 SOUTHERN GOOD ROADS June, 1915 watrons. provided with canvas covers for retaining tlieheat. As delivered the bituminous concrete shall havea temperature of at least 66° C. (150° F.). Jlaterialhaving a lower temperature tlian this shall not be laidupon the foundation. Rollers used on the bituminous concrete and theseal coat shall be well balanced, self-propelled, tandemrollers, weighing between ten (10) and twelve (12)tons each. Each shall have a compression under therear roller of between two hundred (200) and threehundred and Mty (350) pounds per linear inch of roll,and shall be provided with an ash pan, which shall pre-vent ashes from dropping onto the liitumiuous con-crete or seal coat. As soon as possible after the compaction of the bit-uminous concrete, when the surface is clean and drj-, aseal coat of the hot asphalt cement shall be evenly dis-tributed over the liitumiuous concrete and spread bymeans of
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