Steel Detailing Abbreviations (Starting with “B”)

Here is the list of most common abbreviations Starting with Letter “B” used by a steel detailer in structural steel detailing. The list of abbreviations used in a set of structural drawings varies from office to office. Be sure to check the front section of the drawing set for the abbreviations used within.

SI:NOABBREVIATIONDEFENITION
1B&FBELL AND FLANGE
2BALBALANCE
3B/BBACK TO BACK
4BCBOTTOM CHORD
5BDBOARD
6BDRYBOUNDARY
7BEVBEVEL
8BFFBELOW FINISH FLOOR
9BKGBACKING
10BKGDBACKGROUND
11BLDBUILD
12BLDGBUILDING
13BLKBLOCK/BLOCKING
14BLTBUILT
15BLVDBOULEVARD
16BLWBELOW
17BMBEAM
18BOBOTTOM OF
19BOSBOTTOM OF STEEL
20BOTBOTTOM
21B PLBASE PLATE
22BRCGBRACING
23BRDGBRIDGING
24BRGBEARING
25BRG PLBEARING PLATE
26BSBOTH SIDES
27BSMTBASEMENT
28BT WLDBUTT WELD
29BTWNBETWEEN
See also Steel Detailing Abbreviations (Starting with “A”)