Z Purlins

DANA  Z PURLINS

Dana Steel UAE’s  facilities are well equipped for producing Z- Purlins  which are the secondary structural members used to support the roof sheeting and the wall cladding. Besides being economical to use, the Z-Purlins  provide excellent strength to weight ratio. The Z Channels are manufactured from galvanized coils conforming to ASTM – A 653, Grade D with minimum yield strength of 345 Mpa. We can also manufacture Z purlins as per ASTM A653 Gr. 80.The range of purlins produced by Dana varies in depth from 100mm to 450 mm and the related thickness varies up to 3mm  thereby allowing them to cater to large spans of up to 12.0 m. The flange widths, lip sizes and flange angles of the sections can be set to be manufactured based on individual client needs. The same is true of the anti-sag rods and connection fasteners as well as the Z Channels which are customized in size to provide flexibility of the connection to the main structure whether by utilizing the overlapped system or the sleeved system.

Z Purlins manufactured by our factory are exported to All neighboring gulf countries like UAE,QATAR,OMAN,BAHRAIN,SAUDI ARABIA,KUWAIT,JORDAN and AFRICA(KENYA,TANZANIA,SOUTH AFRICA,DJIBOUTI,ETHIOPIA).

Benefits of DANA Purlins

High strength to weight ratio

Economical

Can be used for large spans of up to 11m

 

Better quality and finish

Quick installation

Custom made to requirement

COLD FORMED GI Z PURLINS 

D=depth of section (mm)

f1=flange width (mm)

L=length of lip (mm)

R=average bent radius (mm)

t=steel thickness (mm)

A=area of section (mm2)

C.G=centre of gravity

S.C=shear centre

lxx = moment of inertia about X-X axis (mm4)

sxx = elastic section modulus about X-X axis (mm3)

R = radius of gyration about about X-X axis (mm)

lyy = moment of inertia about Y-Y axis (mm4)

syy = elastic section modulus about Y-Y axis (mm3)

ry = radius of gyration about about Y-Y axis (mm)

rmin = radius of gyration about about Z-Z axis (mm)

teta = angle between Z-Z axis and Y-Y axis (radians)

PURLIN SECTION PROPERTIES AND ALLOWABLES

Section		142Z15	142Z20	172Z15	172Z20	202Z15	202Z15	202Z25	232Z15	232Z20
Description	Units
Depth	D mm	142	142	172	172	202	202	202	232	232
Thickness	T mm	1.50	2.0	1.50	2.0	1.50	2.0	2.50	1.50	2.0
Top flange	F1 mm	50	50	65	65	65	65	65	75	75
Bottom flange	F2 mm	45	45	60	60	60	60	60	70	70
Lip	L mm	16	16	16	16	16	16	16	16	16
Lip angle	Deg	45	45	45	45	45	45	45	45	45
Bend radius	R mm	2.0	2.0	2.0	2.0	2.0	2.0	3.0	2.0	2.0
Weight	W kg/m	3.33	4.44	3.81	5.10	4.12	5.49	6.86	4.78	6.37
Area	A mm2	421.82	558.19	481.82	638.19	526.82	698.19	865.30	601.82	798.19
Ixx(t)	Cm4	135.26	177.34	221.87	291.55	322.76	424.67	521.59	487.09	641.96
Sxx(t)	Cm3	19,39	25.43	26.20	34.43	32.41	42.65	52.39	42.73	56.32
Sxx(b)	Cm3	18.72	24.54	25.41	33.38	31.51	41.46	50.92	41.28	54.40
Rx	Cm	5.66	5.64	6.79	6.76	7.83	7.80	7,76	9.00	8.97
Iyy	Cm4	36.06	47.09	44.26	57.93	44.26	57.94	71.01	64.34	84.40
Syy(i)	Cm3	5.39	7.07	6.17	8.10	6.18	8.11	9.98	7.94	10.44
Syy(r)	Cm3	5.20	6.82	5.95	7.82	5.94	7.81	9.60	7.57	9.95
Ry	Cm	2.92	2.90	3.03	3.01	2.90	2.88	2.87	3.27	3.25
Allowable shear	Va KN	14.92	29.89	12.17	29.21	10.28	24.62	46.70	8.90	21.28
Allowable BM*	Mag KN-m	3.35	4.72	4.45	6.08	5.46	7.60	10.31	6.25	9.75
Allowable BM**	Mawc KN-m	3.12	4.40	4.14	5.66	5.09	7.07	9.60	5.82	9.07
Allowable BM$	Maws KN-m	2.23	3.14	2.96	4.04	3.63	5.05	6.86	4.16	6.48
Ultimate shear	Vu KN	22.42	44.92	18.29	43.90	15.45	37.00	70.19	13.37	31.98
Ultimate BM*	Mug KN-m	5.32	7.49	7.05	9.64	8.67	12.05	16.36	9.92	15.46
Ultimate BM**	Muwc KN-m	4.95	6.98	6.57	8.98	8.07	11.22	15.23	9.23	14.40
Ultimate BM$	Muws KN-m	3.54	4.98	4.69	6.41	5.76	8.02	10.88	6.59	10.28

PURLIN SECTION PROPERTIES AND ALLOWABLES

Section		232Z25	250Z20	250Z25	262Z20	262Z25	302Z25	302Z30
Description	Units
Depth	D mm	232	250	250	262	262	302	302
Thickness	T mm	2.50	2.0	2.50	2.0	2.50	2.50	3.0
Top flange	F1 mm	50	50	65	65	65	65	65
Bottom flange	F2 mm	75	75	75	75	75	75	75
Lip	L mm	16	16	16	16	16	16	16
Lip angle	Deg	45	45	45	45	45	45	45
Bend radius	R mm	3.0	3.0	3.0	3.0	3.0	3.0	3.0
Weight	W kg/m	7.96	6.71	8.39	6.90	8.63	9.79	11.73
Area	A mm2	990.30	848.19	1052.80	872.19	1082.80	1247.30	1491.80
Ixx(t)	Cm4	790.24	786.90	969.52	878.84	1083.18	1661.13	1978.11
Sxx(t)	Cm3	69.34	64.15	79.05	68.33	84.23	111.79	133.12
Sxx(b)	Cm3	66.95	61.80	76.13	65.89	81.20	108.29	128.95
Rx	Cm	8.93	9.63	9.60	10.04	10.02	11.54	11.52
Iyy	Cm4	103.67	95.30	117.14	95.31	117.15	171.05	292.50
Syy(i)	Cm3	12.87	11.34	13.99	11.35	13.99	17.99	21.35
Syy(r)	Cm3	12.26	10.75	13.26	10.75	13.25	17.13	20.33
Ry	Cm	3.24	3.35	3.34	3.31	3.29	3.70	3.68
Allowable shear	Va KN	42.29	19.68	39.05	18.74	37.15	31.56	54.73
Allowable BM*	Mag KN-m	12.55	10.93	13.88	11.66	14.84	19.48	23.61
Allowable BM**	Mawc KN-m	11.68	10.18	12.93	10.86	13.82	18.14	21.98
Allowable BM$	Maws KN-m	8.35	7.27	9.23	7.79	9.87	12.96	15.70
Ultimate shear	Vu KN	63.56	29.57	58.69	28.16	55.84	47.44	82.29
Ultimate BM*	Mug KN-m	16.91	17.34	22.03	18.50	23.55	30.91	37.45
Ultimate BM**	Muwc KN-m	18.54	16.15	20.51	17.23	21.92	28.78	34.87
Ultimate BM$	Muws KN-m	13.24	11.53	14.65	12.30	15.66	20.56	24.90