AWS: American Welding Society AWWA: American Water Works Association AX: Axis B: Boiler, Bathroom, Bidet B TO B: Back to Back B B: Balled and Burlapped, Bell and Bell B F: Bell and Flange B S: Bell and Spigot, Brown Sharp B/: Bottom (of) BBD: Bulletin Board .... EB: Expansion Bolt EC: Exposed Construction ECC: Eccentric ECP: Exposed Construction Painted EDR: Equivalent Direct Radiation EE: Each End EF: Each Face EFTS: Expanding Foam Tape Sealant EG: Edge Grain ...