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Stone Size d <br />(in) <br />Percent of Material Smaller than Typical <br />Stone <br />Typical Stone Dimensions <br />(in) <br />6 <br />70 — 100 <br />12 <br />50 — 70 <br />9 <br />35 — 50 <br />6 <br />2 -10 <br />2 <br />Section 02271 <br />Rip Rap <br />C. Rip rap shall conform to the gradation requirements given in the following table: <br />Notes: <br />1. <br />2. <br />d = average stone size <br />based on typical rock weight <br />3. equivalent spherical diameter <br />4. based on a specific gravity of 2.5 <br />D. Nominal stone size and total thickness of the riprap shall be as shown on the DRAWINGS. <br />2.02 INSTALLATION <br />Stones with typical stone dimensions that are equal to d and larger shall be placed at the top surface with <br />faces and shapes matched to minimize voids and form as smooth a surface as practical. Dumping and backhoe <br />placement alone is not sufficient to ensure a properly interlocked system. The material may be machine - <br />placed to form a substantial bond as approved by MANAGER and CERTIFYING ENGINEER. <br />* ** END OF SECTION * ** <br />Page 2 of 2 <br />ame0 <br />June 19, 2012 <br />Revision 1 <br />