123 69TH PL SE 2018-01-02 MF Import

I'NL PACIFIC Nt)lil,11WEIST ENGINEERiNG, INC. �\ I.ata,ral l&%j%tance to Wind The test data reveals the SF RB-54 foundation system allows manufacture home units to resist wind loads of fifteen pounds p.s.f. or the design load of the manufacture home unit. This meets and exceeds requirement of title 25 California code of regulations division Chapter 2 section 1336.2 and health and Safety Code section 18613.4. lltc SF RB-54 foundation System uses steel plates and fasteners 27" on center to connect the home, the foundation wall and the footing all together. The design uses the end walls to calculate load resistance and the longitudinal walls for calculating the load required. Each connector has a capacity of 2475 lbs. Both end walls of a 27 11. wide home would have a total of 24 bottom connectors of 2475 lbs. each for a total wind shear resistance of 59400 lbs. From those comparisons and to other established wind shear methods, it is evident that when the SF RB54 foundation system is assembled to the manufactures installation instructions, it is more than adequate to resist loads in wind -zones 1,11 and ill. The calculation shows that the SF RB-54 foundation system is more than adequate in wind zones 1, Il and Ill for any configuration of a multi -section HUD home with a vertical exposure 01'20 feet, and lot single section homes up to 14 R. vertical exposure. Seismic As the test report of Umpqua Testing indicates, the pre -cast panel failed at 18,840 lbs. by crumbling in the area immediately adjacent to the wedge, without losing structural integrity to the pre -cast panel wall. Then an additional load of 27,632 lbs. was applied without lost of structural integrity. This was the maximum force the testing device would perform. With the combined test results of compression and wind shear, it is evident that the SF RB-54 meets the requirements of seismic zone I), Ss=1.5 Fa--I.O. R=5 especially in comparison to other previously approved systems. gi iq Control Umpqua Testing Service has been authorized by Cornerstone Foundation System to make random tests of inventoried product and produce a report on the test when needed or requested by an authority having jurisdiction. 4242 Silver Falls Ur. \., Silver -ton, OR. 97381 ph # (503) 873-3184 fax 8 (503) 873-3907 pj", k 13,676