ONESTEEL duragal sections

TABLE D1.3-1(A)
FIRE ENGINEERING DESIGN
EXPOSED SURFACE AREA TO MASS RATIO (m 2 /t)
DuraGal RECTANGULAR HOLLOW SECTIONS: GRADE C450L0
Standard Thickness
about x-axis
1 = TOTAL PERIMETER, PROFILE-PROTECTED
2 = TOTAL PERIMETER, BOX-PROTECTED, NO GAP
3 = TOTAL PERIMETER, BOX-PROTECTED, 25mm GAP
4 = TOP FLANGE EXCLUDED, PROFILE-PROTECTED
5 = TOP FLANGE EXCLUDED, BOX-PROTECTED, NO GAP
6 = TOP FLANGE EXCLUDED, BOX PROTECTED, 25mm GAP
Designation
Mass
d b t per m
1 2 3 4 5 6
mm mm mm kg/m
150 x 50 x 6.0 RHS 16.7 22.4 23.9 35.8 21.2 20.9 26.9
5.0 RHS 14.2 26.6 28.1 42.1 24.8 24.6 31.6
4.0 RHS 11.6 32.9 34.4 51.6 30.3 30.1 38.7
3.0 RHS 8.96 43.5 44.7 67.0 39.3 39.1 50.2
2.5 RHS 7.53 52.0 53.1 79.7 46.7 46.5 59.8
2.0 RHS 6.07 64.7 65.9 98.8 57.8 57.6 74.1
125 x 75 x 6.0 RHS 16.7 22.4 23.9 35.8 19.7 19.4 25.4
5.0 RHS 14.2 26.6 28.1 42.1 23.1 22.8 29.8
4.0 RHS 11.6 32.9 34.4 51.6 28.2 28.0 36.6
3.0 RHS 8.96 43.5 44.7 67.0 36.5 36.3 47.5
2.5 RHS 7.53 52.0 53.1 79.7 43.4 43.2 56.5
2.0 RHS 6.07 64.7 65.9 98.8 53.7 53.5 70.0
100 x 50 x 6.0 RHS 12.0 22.8 24.9 41.6 21.1 20.8 29.1
5.0 RHS 10.3 27.0 29.1 48.5 24.6 24.2 33.9
4.0 RHS 8.49 33.3 35.4 58.9 29.8 29.5 41.2
3.5 RHS 7.53 37.9 39.9 66.4 33.5 33.2 46.5
3.0 RHS 6.60 43.9 45.5 75.8 38.1 37.9 53.0
2.5 RHS 5.56 52.4 53.9 89.8 45.2 44.9 62.9
2.0 RHS 4.50 65.1 66.6 111 55.8 55.5 77.7
1.6 RHS 3.64 81.0 82.5 138 69.0 68.8 96.3
75 x 50 x 6.0 RHS 9.67 23.2 25.8 46.5 21.1 20.7 31.0
5.0 RHS 8.35 27.4 29.9 53.9 24.4 23.9 35.9
4.0 RHS 6.92 33.7 36.1 65.1 29.3 28.9 43.4
3 0 RHS 5.42 44.2 46.1 83.0 37.2 36.9 55.3
2.5 RHS 4.58 52.7 54.5 98.2 43.9 43.6 65.4
2.0 RHS 3.72 65.4 67.2 121 54.1 53.8 80.7
1.6 RHS 3.01 81.3 83.1 150 66.8 66.5 99.7
75 x 25 x 2.5 RHS 3.60 53.1 55.5 111 49.0 48.6 76.3
2.0 RHS 2.93 65.8 68.2 136 60.0 59.7 93.7
1.6 RHS 2.38 81.7 84.0 168 73.9 73.5 116
65 x 35 x 4.0 RHS 5.35 34.2 37.4 74.8 31.4 30.9 49.6
3.0 RHS 4.25 44.7 47.1 94.2 39.3 38.9 62.4
2.5 RHS 3.60 53.1 55.5 111 46.2 45.8 73.6
2.0 RHS 2.93 65.8 68.2 136 56.6 56.2 90.3
50 x 25 x 3.0 RHS 3.07 45.5 48.9 114 41.3 40.7 73.3
2.5 RHS 2.62 54.0 57.2 134 48.2 47.7 85.8
2.0 RHS 2.15 66.6 69.8 163 58.7 58.2 105
1.6 RHS 1.75 82.5 85.6 200 71.9 71.4 128
50 x 20 x 3.0 RHS 2.83 45.8 49.4 120 43.0 42.4 77.7
2.5 RHS 2.42 54.2 57.7 140 50.1 49.5 90.7
2.0 RHS 1.99 66.8 70.3 171 60.8 60.3 110
1.6 RHS 1.63 82.7 86.1 209 74.3 73.8 135
See page D1-7 for details of the cases of fire exposure considered.
DCTDHS/06
DuraGal DESIGN CAPACITY TABLES
MARCH 2002 for STRUCTURAL STEEL HOLLOW SECTIONS D1-17