1025 TEMPLE DR 2016-01-01 MF Import

Hxc�� h] M G�N 9HfA Y K�n H Ct7 �tAM x ��d OH H�g �i] Y �] >H� � r yH 8�y �o� � � i �� DAVID L. NHLSON ANU ASSOCLITES, INC. Consultiny [ngineering Geology Febcuaxy 8, 1990 Pco)ect 80. 0890 ?age 9 explotations, and a fcee-dzaining marecial behind the subqzade va11. These values do not take into account hydcostatic pcessuzes, sloping gcound behind the vall, oz succhaxges due to equipment oc . facent structuzal loads. These values f�cthei assume the use oE an effective dza[n system along the backside of the vall. Ne suggest the use of a fz-e-dcaining sand and fine 9:ave1 backEill along the backside oE the vall to [educe pcessuces on valis and to Leduce potential foc moistuLe Q=oblems. Be suggest any basement oi cetaining vall aceas utilize the cecommendations as shovn on the enclosed Subdcain s BackFill Scheme enclosed. The dzainage blanket should extend to vithin ahout tvo (2) feet of flnished extecioc gcade and have a minimum thickness oE 12 inches. The iemaining tvo feet should 6e bar_k:illed vith lov permeab;li�y on- slte soils. A peiEotated dLain pipe should be embedded in the dcainage blanket along the base of the vall. The pipe should be set such that a positive dzainage gcadient is establtshed and access to an outlet pcevided. The foundation and vali dLatns a=e expected to be floving at least paLt of the yeaL and thelt Eunctlon is veiy lmpoctant. Ae recommend that a xigid PVC pipe be used Eoz these dxains. The system should be desig�ed so that it can be Elushed oL cleaned i`_ necessacy. Pavements The access dzivevay pzoposed vithin the lot vili xequixe specific development contcol. The final site elevattons and dcivevay sucface type vill have an influence on d=ivevay design and constzuction. FoL example, if Z to 3 feet of Eill Is [equiced ln the vet acea the fill potentially could be placed vith minimal site pzepazation. Ii only 1 to 2 feet of fill is planned, some ovecexcavatton may be necessacy. Also, a cigid conciete d[ivevay is less tolecait to settlement than a ilexible asphalt suzface. The installation of de�atecing dcains may also he app=opciate toc the dcivevay censttuction, tie cecommend that final d=ivevay design be dete*mined based on final pzo7ect elevations and gcound vateL condltions at the time oE consttuction.