Laserfiche WebLink
amee <br />7. The subgrade shall be prepared for geogrid placement by uniform grading. No steep grade <br />changes or edges shall be allowed. The CERTIFYING ENGINEER shall approve the <br />subgrade prior to geogrid installation. The subgrade must not be smooth rolled. <br />B. Joining <br />1. The geogrid shall be placed in continuous pieces downslope. <br />2. If the geogrid is to be joined end to end, a pinned connection splice shall be used. The <br />pinned connection must be manufactured from HDPE materials and shall be manufacturer <br />approved. <br />C. Defects and Repairs <br />1. All damaged geogrid rolls shall be rejected. No repairs shall be made. <br />3.03 PLACEMENT OF SOIL OR GRANULAR MATERIALS <br />All soil materials located on top of a geogrid shall be placed in such a manner as to ensure: <br />1. The geogrid is not damaged. <br />2. Minimal movement and wrinkling or folding of the underlying geogrid layer(s) occurs. <br />3. No excess tensile stresses shall occur in the geogrid such as when earth- moving equipment makes <br />sudden starts, stops, or turns. <br />4. Soil placement over the geogrid shall be performed with construction equipment approved by the <br />CERTIFYING ENGINEER. Such construction equipment includes low to moderate ground <br />pressure dozers (e.g., D -6 or D -8 CAT dozer). Dozers will push soil materials over the geogrid from <br />the bottom of the slope in an uphill direction. <br />5. A minimum of 6" of soil cover shall be placed over the geogrid layers. No construction equipment <br />shall operate directly on the geogrid layer or on less than 6" of soil cover. <br />6. Soil cover over the geogrid shall consist of Select Structural Fill and shall be compacted and placed <br />according to Select Structural Fill SPECIFICATIONS in Section 2200. <br />7. Extent of geogrid - reinforced areas shall be surveyed and staked in the field by the CONTRACTOR. <br />Subsequent construction activities over the reinforced areas shall not damage geogrid or reduce soil <br />cover thickness to less than 6 inches. <br />Section 02776.1 Page 6 of 6 September 3, 2008 <br />Geogrid Revision 1 <br />S: \Projects \1125E CCV CQA \I - Tech Specs \02776.1 rt.doc <br />* ** END OF SECTION * ** <br />