HST Purlins

HST Purlins and Girts are roll formed from zinc coated high-tensile steel Z275, punched in-line and cut to length. Heavier zinc coating weight of Z450 can also be provided on request, subject to minimum order quantity and lead times.

Purlin Profiles

Profile I

Profile II

Profile III

Click image above to display larger size.

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Profile	Purlin Size HST	d mm	b mm	t mm	p mm	q mm	b1 mm	d1 mm	d2 mm	d3 mm	d4 mm	xL mm	xs mm	Area As mm2	Mass kg/m
	100/12	102	51	1.15	15							16.8	24.9	253	2.03
	100/15	102	51	1.45	15							16.6	24.7	316	2.54
	100/19	102	51	1.85	15							16.4	24.4	400	3.23
	150/12	152	65	1.15	24	10	8	59		7		23.5	33.3	386	3.03
	150/15	152	65	1.45	24	10	8	59		7		23.2	32.9	483	3.79
	150/18	152	65	1.75	24	10	8	59		7		23	32.6	578	4.56
	200/12	203	75	1.15	25	12	8	59	10	10	48	25.1	35.2	478	3.80
	200/15	203	75	1.45	25	12	8	59	10	10	48	24.9	35.1	598	4.76
	200/18	203	75	1.75	25	12	8	59	10	10	48	24.6	34.9	717	5.72
	250/13	250	85	1.25	33	12	10	59	14	25	73	28.7	37.8	625	5.01
	250/15	250	85	1.45	33	12	10	59	14	25	73	28.6	37.7	722	5.79
	250/18	250	85	1.75	33	12	10	59	14	25	73	28.3	37.6	866	6.96
	300/15	300	100	1.45	38	12	10	59	64	25	123	32.1	45.3	847	6.72
	300/18	300	100	1.75	38	12	10	59	64	25	123	31.9	45.1	1018	8.08
	300/24	300	100	2.4	38	12	10	59	64	25	123	31.4	44.8	1382	11.01
	300/30	300	100	3	38	12	10	59	64	25	123	30.9	44.5	1711	13.71
	350/18	350	100	1.75	43	12	10	70	92	25	151	30.4	45.1	1123	8.96
	350/24	350	100	2.4	43	12	10	70	92	25	151	29.9	44.8	1526	12.08
	350/30	350	100	3	43	12	10	70	92	25	151	29.5	44.5	1891	15.05
	400/20	400	100	1.95	48	12	10	75	132	25	191	29.1	45	1365	10.78
	400/24	400	100	2.4	48	12	10	75	132	25	191	28.8	44.8	1670	13.23
	400/30	400	100	3	48	12	10	75	132	25	191	28.3	44.4	2071	16.48

Notes:
1. All section properties are for the gross section.
2. xL = Centroid xs = Shear Centre.

Flatback profile

Steel Thickness, Grade, and Zinc Weight

Tolerances

Hole Sizes

Pre-punched holes can be provided.

Click image above to display larger size.

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Design Information

HST Purlin and Girt loads are presented in Limit State format consistent with AS/NZS 1170.0:2002 “Structural Design Actions”. All design information² should be used in conjunction with AS/NZS 4600:2005.

Design Criteria

Strength reduction factors are included in the design load capacity and have been determined from AS/NZS4600:2005 as follows: 
Bending fb = 0.90 (fb = 0.95 for section moment capacity) 
Compression fc = 0.85 
Shear fv = 0.90 

The self-weight of HST purlin is not included in the load tables and should be calculated along with other dead loads.