Nylon Shims between bolted plates
Nylon Shims between bolted plates
(OP)
I am modifying a typical detail for a decorative railing design. All of the locations where plates are bolted together have nylon shims between the plates.
What is the purpose of the nylon shims? Is it to prevent moment transfer between plates so that the railing and connection can be designed as simply supported? Is it to aid in thermal movement?
How do I properly size the shims? Is it based on the hole or slot dimension on the plates? Is it based on the plate dimensions?
The typical details can be seen here:
http://www.dot.state.mn.us/bridge/pdf/cadd/files/b...
On page 99.
Thank you!
What is the purpose of the nylon shims? Is it to prevent moment transfer between plates so that the railing and connection can be designed as simply supported? Is it to aid in thermal movement?
How do I properly size the shims? Is it based on the hole or slot dimension on the plates? Is it based on the plate dimensions?
The typical details can be seen here:
http://www.dot.state.mn.us/bridge/pdf/cadd/files/b...
On page 99.
Thank you!





RE: Nylon Shims between bolted plates
RE: Nylon Shims between bolted plates
I doubt that the size was engineered originally, beyond the availability of nylon stock in 1.5" wide x 1/4" thick strips.
RE: Nylon Shims between bolted plates
Actually insulating parts of the railing from other parts of the bridge is almost certainly to fail, if only because the bolts going through each piece will be almost impossible to keep all insulated.