Longitudinal Edge Beam Design (LFD)
Longitudinal Edge Beam Design (LFD)
(OP)
I am trying to remember how to perform a longitudinal Edge Beam Design for a continuous RC slab using AASHTO 17th Edition. 3.24.8 provides guidance on load determination, but I can not find any guidance on what width to assume for the beam that this load is applied to... Anyone remember how to do this?





RE: Longitudinal Edge Beam Design (LFD)
RE: Longitudinal Edge Beam Design (LFD)
RE: Longitudinal Edge Beam Design (LFD)
RE: Longitudinal Edge Beam Design (LFD)
Calculate the area of steel required (M/0.80dxfs), and evaluate required width to place it. I do not know what's your slab depth, but for typical bridges your beam shall be 1.5 - 2' wide.
This will be your width. Then check the steel and concrete stresses using normal formulas. You can combine your edge beam reinforcemment with your regular slab reinforcement.
Your edge beam shall have separate stirrups.
RE: Longitudinal Edge Beam Design (LFD)
RE: Longitudinal Edge Beam Design (LFD)