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fasteners in inaccessible hollow structure

2927 Views 14 Replies 13 Participants Last post by  miatapaul
Hi All,

Never thought much about this because it's never been something I needed to do. I want to put a pretty good load bearing piece of hardware onto a 1/4 inch thick fiberglass structure which has no back side access. Is there anything besides screws that we use in the marine community for such applications? Thank.

1 - 1 of 15 Posts
This demands a backing plate. You cannot use blind fasteners for something like this. Life safety gear requires a MINIMUM of a 10:1 safety margin which for a 200lb man would require 2,000lbs static load. Since jack lines deal with shock loads the forces could be substantially higher. You need a big backing plate, and plenty of bonding surface to do this correctly.

Since the traveler also has a backing plate there must be some way of accessing the area, even if it isn't obvious.
1 - 1 of 15 Posts
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