Hi,
I've had pans drawn up for an extension and it specifies PFC's bolted back to back. Just out of general interest, can some one point me in the direction of comparative span tables, or give me a rough run down on the strength differences? I am just curious as some time ago I had calcs done just for the knock through and the UB's specified then seem to be considerably bigger, than the PFC's now specified on the Extension plans.
I would just like to appreciate everything behind the design.
Cheers,
MonkeyHunter.
I've had pans drawn up for an extension and it specifies PFC's bolted back to back. Just out of general interest, can some one point me in the direction of comparative span tables, or give me a rough run down on the strength differences? I am just curious as some time ago I had calcs done just for the knock through and the UB's specified then seem to be considerably bigger, than the PFC's now specified on the Extension plans.
I would just like to appreciate everything behind the design.
Cheers,
MonkeyHunter.