Height

h

Height

Permissible Variation

Illustration

<100

+1.5

100~<200

+2.0

200~<400

+3.0

≥400

+4.0

Leg Width

b

<100

+1.5

100~<150

+2.0

150~<200

+2.5

200~<300

+3.0

300~<400

+3.5

≥400

+4.0

Waist Thickness

d

<100

+0.4

100~<200

+0.5

200~<300

+0.7

300~<400

+0.8

≥400

+0.9

Outer Edge Slope T

T≤1.5%b
2T≤2.5%b

Waist Bending W

W≤0.15d

Bending

Double T Steel

Bending Per Meter ≤2mm
Total Bending ≤0.20%
of the Overall Length

Applicable for big Up-Down,
and Left-Right Bending

channel steel

Bending Per Meter ≤3mm
Total Bending ≤0.30%
of the Overall Length