Stirrups
Beam Size & Covers
in
in
in
in
in
in
Stirrup
in
4-legged = outer + 1 inner stirrup, 6-legged = outer + 2 inner, and so on. An odd leftover leg becomes a single-leg crosstie. Inner stirrup B&D leg = bottom bar c/c + bar Ø + 2×stirrup Ø.
Main Rebars
Top Bars
Bottom Bars
Stirrup Distribution (zones along span)
in
Section Preview & Leg Values
main bars (top/bottom)
stirrup (dashed = inner legs)
Calculated Values
Leg convention: B & D = stirrup legs across the width, C & E = legs across the depth.
Types per standard practice: single legged (S), 2-legged closed, 4/6-legged (outer + inner stirrups), open loop (U), with 180°/135°/90° hook options.
Inner stirrups wrap adjacent bottom-bar pairs — legs shown in the results. Hook extensions use exact ASTM/PCI standard-hook table values.