CSA S806-26 GFRP Beam Design

Building structures with fibre-reinforced polymers · flexure · shear · SLS

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Untitled Project · Rev 0 ·

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Project information

Appears on the printed calculation sheet

Beam geometry

Cl. 8.2.3 — cover ≥ max(2db, 30 mm)

mm
mm
mm
mm
mm
mm
Effective depth, d
540.0 mm
h − cover − db,st − db/2
Area of one bar, Ab
314.2 mm²
π db²/4
Total FRP area, AF
1,256.6 mm²
n × Ab

Concrete properties

Cl. 6.5.3

MPa
Ec = 4500√f'c
26,622.4 MPa
α₁ (Eq. 8.8)
0.7975
β₁ (Eq. 8.9)
0.8825
fr = 0.6λ√f'c (Eq. 8.4)
3.5 MPa

GFRP reinforcement

Properties per CSA S807 · Cl. 7.1.6

MPa
MPa
εFu = fFu/EF
0.02000

GFRP shear reinforcement

Cl. 9.7.2 — closed loop stirrups

mm
mm
MPa
MPa
AvF (2 legs)
157.1 mm²

Factored & service loads

kN·m
kN
kN·m
kN·m
kN/m
kN

Development length parameters

Cl. 9.3.3

mm

Deflection parameters

Cl. 8.3.2.8 · Table 4

Section views

Cross-section and elevation, live with the input

N.A. c = 120mmBar 1: ⌀20 mm · Ab = 314 mm² · fF = 612 MPaBar 2: ⌀20 mm · Ab = 314 mm² · fF = 612 MPaBar 3: ⌀20 mm · Ab = 314 mm² · fF = 612 MPaBar 4: ⌀20 mm · Ab = 314 mm² · fF = 612 MPab = 300mmh = 600mmd = 540mmcov 40mm4 – ⌀20mm GFRP · stirrups ⌀10mm @ 150mm

Cross-section · reinforcement layout

q = 15.00 kN/mδ_imm = 16.38mm · δ_total = 28.17mmL = 6,000mmh = 600mm

Elevation · loading, stirrups and deflected shape

GFRP reinforcementCompression blockNeutral axis / deflection

Drawings are schematic and scale with the current input.

Per CSA S806:26 · GFRP properties per CSA S807 · Ec per CSA A23.3 · v1.0

This tool is an aid to design. The engineer of record remains responsible for verifying all calculations, assumptions and code interpretations.