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<br /> <br />b <br /> <br />a <br /> <br /> <br />C <br /> <br />e <br /> <br />, <br />, <br />, <br />, <br />, <br />- -:---+---+-:-- <br />i I I! <br />-.,-:--+---t--: -- <br />, , <br />, . <br />, . <br />, , <br />, , <br /> <br />f <br /> <br />9 <br /> <br />w <br /> <br />Figure 4.48 Minimum Bolt Spacing Distances <br />for Square Vertical Members <br /> <br />Where no direct contact of the manufactured <br />home with floodwaters is anticipated four lag <br />screws should be used at each chassis 1- <br />beam/horizontal beam connection as shown in <br />Table 4.25. <br /> <br />m <br />I <br /> <br />C <br /> <br />e <br /> <br />f <br /> <br />f <br /> <br />--.- <br />, <br />, <br />, <br />, <br />, <br />, <br />, <br />, <br />, <br />, <br />, <br /> <br />9 <br /> <br />~ <br /> <br />Figure 4.49 Minimum Bolt Spacing Distances <br />for Round Vertical Members <br /> <br /> <br />Table 4.25 <br /> <br />MINIMUM NOMINAL LAG SCREW SIZE <br />(inches) <br /> <br />Support Spacing Wind Load <br />([t. ) 15 ps! 25 ps! <br />5 1/2 X 2 1/2 X 3 <br />6 1/2 X 3 1/2 X 4 <br />7 1/2 X 3 1/2 X 4 <br />8 1/2 X 3 1/2 X 4 <br />9 1/2 X 3 1/2 X 5 <br />10 1/2 X 4 1/2 X 5 <br /> <br />Figure 4.50 shows how these are to be applied <br />at each chassis I-beam/horizontal beam connec- <br />tion. Other types of connections can be considered <br />but must be designed to withstand both withdrawal <br />and lateral loads imposed by uplift and lateral wind <br />forces. <br /> <br /> <br /> <br />. =: <br /> <br />:: . <br /> <br />, <br /> <br /> <br />. " <br /> <br />. <br /> <br />Figure 4.50 Chassis I-Beam Lag Screws <br /> <br />65 <br />