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TABLE D1.3-2(A)<br />
FIRE ENGINEERING DESIGN<br />
EXPOSED SURFACE AREA TO MASS RATIO (m 2 /t)<br />
DuraGal RECTANGULAR HOLLOW SECTIONS: GRADE C450L0<br />
Non-Standard Thickness<br />
about x-axis<br />
1 = TOTAL PERIMETER, PROFILE-PROTECTED<br />
2 = TOTAL PERIMETER, BOX-PROTECTED, NO GAP<br />
3 = TOTAL PERIMETER, BOX-PROTECTED, 25mm GAP<br />
4 = TOP FLANGE EXCLUDED, PROFILE-PROTECTED<br />
5 = TOP FLANGE EXCLUDED, BOX-PROTECTED, NO GAP<br />
6 = TOP FLANGE EXCLUDED, BOX PROTECTED, 25mm GAP<br />
Designation<br />
Mass<br />
d b t per m<br />
1 2 3 4 5 6<br />
mm mm mm kg/m<br />
125 x 75 x 2.8 RHS 8.39 46.5 47.7 71.5 38.9 38.7 50.7<br />
2.3 RHS 6.95 56.4 57.6 86.3 47.0 46.8 61.2<br />
100 x 50 x 2.8 RHS 6.19 46.9 48.5 80.8 40.6 40.4 56.5<br />
2.3 RHS 5.14 56.8 58.3 97.2 48.9 48.6 68.0<br />
75 x 50 x 2.8 RHS 5.09 47.2 49.1 88.4 39.6 39.3 58.9<br />
2.3 RHS 4.24 57.1 59.0 106 47.5 47.2 70.7<br />
65 x 35 x 2.8 RHS 3.99 47.7 50.1 100 41.7 41.3 66.4<br />
2.3 RHS 3.34 57.6 59.9 120 49.8 49.4 79.4<br />
50 x 25 x 2.8 RHS 2.89 48.5 51.9 121 43.8 43.2 77.8<br />
2.3 RHS 2.44 58.4 61.6 144 51.9 51.3 92.4<br />
50 x 20 x 2.8 RHS 2.67 48.8 52.4 127 45.5 44.9 82.3<br />
2.3 RHS 2.25 58.6 62.1 151 53.8 53.2 97.6<br />
See page D1-7 for details of the cases of fire exposure considered.<br />
TABLE D1.3-2(B)<br />
FIRE ENGINEERING DESIGN<br />
EXPOSED SURFACE AREA TO MASS RATIO (m 2 /t)<br />
DuraGal RECTANGULAR HOLLOW SECTIONS: GRADE C450L0<br />
Non-Standard Thickness<br />
about y-axis<br />
1 = TOTAL PERIMETER, PROFILE-PROTECTED<br />
2 = TOTAL PERIMETER, BOX-PROTECTED, NO GAP<br />
3 = TOTAL PERIMETER, BOX-PROTECTED, 25mm GAP<br />
4 = TOP FLANGE EXCLUDED, PROFILE-PROTECTED<br />
5 = TOP FLANGE EXCLUDED, BOX-PROTECTED, NO GAP<br />
6 = TOP FLANGE EXCLUDED, BOX PROTECTED, 25mm GAP<br />
Designation<br />
Mass<br />
d b t per m<br />
1 2 3 4 5 6<br />
mm mm mm kg/m<br />
125 x 75 x 2.8 RHS 8.39 46.5 47.7 71.5 33.0 32.8 44.7<br />
2.3 RHS 6.95 56.4 57.6 86.3 39.8 39.6 54.0<br />
100 x 50 x 2.8 RHS 6.19 46.9 48.5 80.8 32.6 32.3 48.5<br />
2.3 RHS 5.14 56.8 58.3 97.2 39.1 38.9 58.3<br />
75 x 50 x 2.8 RHS 5.09 47.2 49.1 88.4 34.7 34.4 54.0<br />
2.3 RHS 4.24 57.1 59.0 106 41.6 41.3 64.8<br />
65 x 35 x 2.8 RHS 3.99 47.7 50.1 100 34.2 33.8 58.9<br />
2.3 RHS 3.34 57.6 59.9 120 40.8 40.4 70.4<br />
50 x 25 x 2.8 RHS 2.89 48.5 51.9 121 35.1 34.6 69.1<br />
2.3 RHS 2.44 58.4 61.6 144 41.6 41.1 82.1<br />
50 x 20 x 2.8 RHS 2.67 48.8 52.4 127 34.3 33.7 71.1<br />
2.3 RHS 2.25 58.6 62.1 151 40.5 39.9 84.3<br />
See page D1-7 for details of the cases of fire exposure considered.<br />
DCTDHS/06<br />
DuraGal DESIGN CAPACITY TABLES<br />
MARCH 2002 for STRUCTURAL STEEL HOLLOW SECTIONS D1-19
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