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Attaching a frame to older boat
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<blockquote data-quote="minuteman62-64" data-source="post: 381633" data-attributes="member: 15157"><p>If you are asking about the rivet spacing - you can go on-line and find data on the shear strength of different types of rivets. Make a conservative assumption about the load on the bracket, divide by the shear strength of one rivet and the result is the minimum number of rivets needed (its going to show as pretty low - maybe even 1; I'd at least double or triple the number.</p><p></p><p>Are you thinking a 1x1x1/8 angle going across your boat? I did some calculations awhile back, based on a 200 pounder (me) standing in the middle of my small add-on deck. Again, being conservative, ended up using 1 1/2 x 1 1/2 x 1/8 angle of a structural grade. Would cost a little more, but, compared to the labor you'll put in, won't amount to much in consideration of the entire project.</p></blockquote><p></p>
[QUOTE="minuteman62-64, post: 381633, member: 15157"] If you are asking about the rivet spacing - you can go on-line and find data on the shear strength of different types of rivets. Make a conservative assumption about the load on the bracket, divide by the shear strength of one rivet and the result is the minimum number of rivets needed (its going to show as pretty low - maybe even 1; I'd at least double or triple the number. Are you thinking a 1x1x1/8 angle going across your boat? I did some calculations awhile back, based on a 200 pounder (me) standing in the middle of my small add-on deck. Again, being conservative, ended up using 1 1/2 x 1 1/2 x 1/8 angle of a structural grade. Would cost a little more, but, compared to the labor you'll put in, won't amount to much in consideration of the entire project. [/QUOTE]
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Attaching a frame to older boat
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