On construction drawings from the early 1960s, there is a note referring to all piles in this section to be “12"B.P. at 53 pounds”. Are these BP 12x53 H-piles? Can somebody give me dimensions for this pile? Depth, flange width, web thickness, flange thickness, steel grade? I believe it would come from the 1956 AISI Steel Construction Manual.
The 12BP53 H Bearing Piles have the same dimensions in the 4th edition and the 5th edition AISC Steel Construction Manual:
- Depth 11.780
- Flange Width 12.046
- Flange Thickness .436
- Web Thickness .436
In the 7th edition, they began using the HP12x53 designation with the same dimensions
Above is a snippet.