Purlindesignguide

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DESIGN GUIDE – PURLIN SYSTEMS
This guide is an extract from the Dimond Structural Systems Manual and it is to be read in conjunction with the full Dimond Structural Systems Manual available at www.dimond.co.nz under the Architects/Specifiers section. This guide will not be updated by Dimond and it is intended that the user updates this guide using the current Dimond Structural Systems Manual on our website.

As part of Dimond’s policy of continuing product and system development the company reserves the right, at any time and without notice, to discontinue or change the products, materials, design advice, features or specifications represented in this Manual without incurring any liability. The information in this Manual is issued for general application in New Zealand, and should not be treated as a substitute for detailed technical advice in relation to requirements for individual projects in New Zealand or overseas. To the extent permitted by law, Dimond disclaim any liability for loss or damage incurred by the use of the information in this Manual unless it is covered by a specific warranty agreement. Dimond, a division of Fletcher Steel Ltd

www.dimond.co.nz

0800 ROOFSPEC (0800 766 377)

Purlin Design Guide

DESIGN GUIDE – DHS PURLINS

DHS Purlins – Nominal Dimensions

150

65

200

75

250

85

300

100

350

100

400

100

DHS 150

DHS 200

DHS 250

DHS 300

DHS 350

DHS 400

August 2007

2.3.4 DHS SECTION PROPERTIES
Swage Depth

Purlin Design Guide

DHS Section d mm mm 23 23 28 28 28 33 33 33 38 38 43 48 31.8 70.9 32.7 73.4 33.9 75.6 34.0 76.1 29.3 66.2 29.3 66.7 29.4 67.1 26.1 60.8 26.2 61.4 26.3 62.0 23.9 56.1 24.0 56.6 i

Depth Width Thickness Mass D B t mm mm mm kg/m b mm 10 10 10 10 10 12 12 12 12 12 12 12 xc mm x0 mm 54 54 62 62 62 67 67 67 67 67 77 79 7 7 7 7 6 6 6 4 4 4 4 4

Weight

kN/m

Swage Depth i mm

DHS 150/12

150

65

1.15

2.99

0.030

DHS 150/15

150

65

1.45

3.74

0.037

DHS 200/12

200

75

1.15

3.71

0.037

DHS 200/15

200

75

1.45

4.65

0.046

DHS 200/18

200

75

1.75

5.59

0.055

DHS 250/13

250

85

1.25

4.87

0.048

DHS 250/15

250

85

1.45

5.63

0.056

DHS 250/18

250

85

1.75

6.76

0.067

DHS 300/15

300

100

1.45

6.66

0.066

DHS 300/18

300

100

1.75

8.01

0.079

DHS 350/18

350

100

1.75

8.83

0.087

DHS 400/20

400

100

1.95

10.74

0.106

Note: Mass assumes a total coated weight for the standard zinc coating of 275 g/m2.

DHS Section
y

Ag mm2 mm 166 165 207 206 206 246 245 245 292 292 333 380 502 879 595 1042 1149 1734 323 726 5.82 10.47 11.97 14.13 27.41 32.47 48.48 75.70 (–ve) = Web in compression 415 4.96 208 4.04 334 1.76 314 238 336 445 290 361 478 381 505 523 635 168 1.44 223 10.2 12.6 15.2 18.9 22.4 22.4 25.8 30.7 35.8 42.7 48.8 60.0 151.3 37.4 134.1 37.7 116.5 37.7 116.7 37.9 97.0 32.3 97.1 32.5 97.2 32.6 78.1 28.7 78.2 28.9 78.4 29.1 59.1 25.1 59.2 25.3 1.18 1.57 2.37 3.22 4.12 4.62 5.62 7.20 8.93

FULL (GROSS) SECTION PROPERTIES Ix Iy Zx Z y(+ve) Z y(–ve) rx ry 106mm4 106mm4 103mm3 103mm3 103mm3 mm mm J mm4 Iw 109mm6 A e(fy) mm2

EFFECTIVE SECTION PROPERTIES Iex Iey(+ve) Iey(–ve) Zex Zey(+ve) Zey(–ve) 106mm4 106mm4 106mm4 103mm3 103mm3 103mm3 0.24 0.30 0.40 0.49 0.59 0.66 0.76 0.90 1.22 11.46 16.36 25.75 1.45 1.60 1.91 0.16 0.22 0.25 0.33 0.42 0.39 0.47 0.60 0.73 0.92 0.96 1.14 14.6 20.2 20.7 29.8 39.9 31.6 39.6 53.2 50.2 67.1 80.8 112.2 5.9 7.3 8.2 10.1 12.0 11.8 13.6 16.1 18.4 22.0 23.7 28.0 4.9 6.6 6.2 8.6 10.8 8.6 10.5 13.8 13.5 17.6 18.0 21.4

DHS 150/12

381

1.33

0.24

17.8

5.9

DHS 150/15

477

1.66

0.30

22.2

7.3

DHS 200/12

473

2.90

0.40

29.0

8.2

DHS 200/15

593

3.63

0.49

36.3

10.1

DHS 200/18

712

4.34

0.59

43.4

12.0

DHS 250/13

620

5.86...
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