620 112TH ST SE SPACE 100 2019-08-16

I • • • I • a' Design footings to comply with the following additional requirements: • To keep footings directly under I-beams and other support points, size them slightly larger than the minimum required area to allow slight adjustment of the pier location during home installation. • Design footings with a footing extension(projection beyond the base of the pier)no greater than the footing thickness(Figure 11). Increase footing thick- ness if necessary. -- -- Figure 11. Maximum footing extensions 4y -6• 16•BLOCK 4•I I TYPI 24• FOOTING 18 16• YES EXTENDS BY ITS NO MORE THAN ITS 24' _ 16^ } O THICKNESS OR THICKNESS '-- LESS YES— '45 k8_ _ 'J 4• 4' SPLIT F YES EXT NDSSPLIT FO EING SS NO EEXTENDSOTING MO E THAN ONE THIRD THAN ONE THIRD ITS WIDTH ITS WIDTH • The footing sizes shown are for square pads and are based on the surface area(square inches) Design non-square footings such that the area and depth is equal to or greater than the area of the square footing shown in Table 10 and the distance from the edge of the pier to the edge of the footing is not more than the thickness of the footing. TABLE 10A. FOOTER DEPTH Poured in Place FootingFooting ��►ItlrrrSingle Stack Pier ttfii Double Stack Piere��\�C�P'..1N /4. Footer Max Fo�ter Footer Max Footer Di ension Max.Area Depth Di Max Area Depth mension C1 6 28 x 20560 6 28 x 28 784 :C[ ANICU E 8 32 x 24 768 8 32 x 32 1024 f >♦ :�`j r 10 36 x 28 1008 10 36 x 36 1296 12 40 x 32 1280 12 40 x 40 1600 14 44 x 44 1936 �, •�, 16 48 x 48 2304 /77�t iOF STEP 6. INSTALL FOOTINGS Construct the footings as follows: • Maintain the distance between adjacent piers to within 10%of the tabulated VZ/ spacing and so the average distance between piers is equal to or less than the Placing Concrete anchors. tabulated spacing. If anchors will be placed in • Whenever possible, place pier supports directly under the required locations. If concrete follow instructions plumbing, electrical or mechanical equipment interferes, place supports no in Install Stabilizing Sys- more than 6 inches in either direction of the support point. tem(p. 74)to determine • Recess perimeter pier supports no more than 10 inches from the edge of the anchor layout. Either place floor with added support as shown in Figure 12. anchors immediately after the concrete has been poured or drill them in after the concrete has set. 33 C� v