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Benefits
Applications
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AASHTO Standards
Cross sections of typical curbs of the most common types are shown in Figure II. These are as shown in A Policy on Geometric Design of Highways and Streets, 1990, published by the American Association of State Highway and Transportation Officials (AASHTO). Identical cross sections with soft metric conversion are found in the 1994 edition of this publication. The use of one of these cross sections is recommended.
These curbs can be constructed with conventional forms or with slipform equipment. Note that the faces of the curbs have slight slopes or batter to facilitate slipform construction or to ease the removal of conventional forms sooner, without objectionable slumping of the sides. The batter also allows soil compaction equipment to operate next to the curbs with less likelihood of damaging them, and to provide better compaction.
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