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Table 4 Comparison of experimental and FE peak strains for test beams.

From: Behavior of FRP-Strengthened RC Beams with Large Rectangular Web Openings in Flexure Zones: Experimental and Numerical Study

Beam ID Results Strain in bottom rebars at mid-span (με)a Strain in top rebars at mid-span (με)a Strain in first FRP layer at mid-span (με) Strain in second FRP layer at mid-depth of opening edge (με) Mid-span steel plate strain at mid-depth of top chord (με)a
At mid-depth of bottom chord At mid-depth of top chord
BC-N-4PB EXP NA −  14,841
  FE 69,540 −  14,036
  EXP/FE 1.06
BC-O1-4PB EXP 26,705 −  7683
  FE 31,354 −  7797
  EXP/FE 0.85 0.99
BC-N-CPL EXP NA −  5407
  FE 81,413 −  4980
  EXP/FE 1.09
BC-O1-CPL EXP 2609 434
  FE 2583 460
  EXP/FE 1.01 0.94
BS1-O1-CPL EXP 2549 350 2526 858 1931
  FE 2711 380 2771 691 2116
  EXP/FE 0.94 0.92 0.91 1.24 0.91
BC-O2-CPL EXP NA 19,297
  FE 1303 21,894
  EXP/FE 0.88
BS2-O2-CPL EXP 1990 8995 1366 762 2807
  FE 2296 7768 1202 824 3033
  EXP/FE 0.87 1.16 1.14 0.92 0.93
  1. Tensile strain is positive.
  2. EXP experimental, FE finite element, NA not available data.
  3. aValues in italic bold font indicate steel yielding.