1025 TEMPLE DR 2016-01-01 MF Import

� �� DAVID L. NELSON AND ASSOCIATES, INC. Consulting Enginccrin� Gcolugy Feb=ua=y 8, 1990 Pcoject No. 0890 Page 7 2. All footing excavations should be pcepazed such that a dense, nonyieldlnq, unlform sotl condltion has been established pLiot to placemeut of footing conczete. 3. All footings should extend through any existing loose native soil, non-stcuctuzal fill or modified zones and be placed to beac a minimum of 18 inches belav Eintshed adjacent giade. 9. All footings should be sized accocding to the anticipated voll oc column loadings, and the above soil beazing values. Hinimum footing �idths of 19 and 20 inches ace zecommended Eoz all continuous and isolated Eootings, cespectively. : 5. All footings should be iree of ponded r+ater and sloughed oL vater loosened solls pLioc to placemen: oE Eooting conctete. Gzound settlements due to stcuctuzal loads should be less than one (1) inch total and one-half (1/2) inch diEfecential ovec the building axea. An incceased pot�ntial Eoz diffezential settlement should be anticipated fo= footings founded on crt and fill. We recommend that footing aceas be inspected by us ptioc to placement o£ conccete to vetlfy that teacing soil type and condlttans ace consistent •aith the [ecommendations of this zepoct. Ducing peciods of vet veathei oc in satucated soil conditions, special measuzes may be tequized to Eacilitate constzuction. :ntecim excavation gcading should be sloped to pcevent ponding. It should be noted that the on- site suzface soils and veathered zone matezials ace considexed hiqhly moistuLe sensittve, and may tend to deteriocate if vocked during catny veathez o: in a satuzated condition. Delays in const=uction activity may Lesult fiom a deteciocated soil candition. If necessacy, the use of a covezing oE cLushed zock or pit zun gravel ovez the subgzade soils to minimize distucbance and soEtening af the beacing soils dut[ng constzuction. The thickness of the Lock oc qcavel vill be dependent on the mateiial being pcotected, and its use. Pressures On Subgzade Falls The design lateial eacth pzessuces acting on cetaining va11s aie a funccion of the type oE vall (Eoc example, yielding oz non-yielding), the method oE