H-172-A

Name: H-172-A
Brand: Haydon

Overview

H-172 Back to Back Welded Channel - 2 Pieces

H-172-A strut channels are manufactured by a series of forming dies, or rolls, which progressively cold work the strip steel into the desired channel configuration. This method produces a cross-section of uniform dimensions within a tolerance of ±0.015" on outside dimensions.

12 Gauge Back-to-Back
1³/₄" X 1⁵/₈"
Weight/100 ft. - 278 lbs.

H-172-A is a light-duty welded channel capable of top and bottom attachment. This product is commonly used for trapeze to support MEP systems.

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Specifications

Materials

H-Strut channels are manufactured from high quality, domestically sourced structural steel and roll formed into shape. These products comply with MFMA-4 standards, and beam and column load tables are calculated in accordance with the ANSI North American Specification for the Design of Cold-Formed Steel Structural Members, 2016 Edition.

Aluminum (Type 6063-T6) - ASTM B221
Plain Steel - ASTM A1011 SS Grade 33
Pre-Galvanized Steel - ASTM A653 SS Grade 33, G90
Stainless Steel (Type 304 & 316L) - ASTM A240
Other materials and specifications are available upon request.

Welding

Channel combinations of two or more elements are spot welded together to form various multiple combinations. The spot welds are placed two inches on center throughout the length of the multiple channel sections.

Loading Data

Load capacities in this section include a safety factor (to the yield strength) of 1.68 for beam loads and 1.80 for column loads.
When calculating load at the center of the span, multiply the load from the table by 0.5 and deflection by 0.8.
When calculating beam and column loads for aluminum, multiply by 33%.

Technical Information

H-172-A strut channels are produced in standard 10' and 20' lengths with a tolerance of ±¹⁄₈".

Other lengths are available upon request.

Span or Unbraced Height(in)	Static Beam Load (X-X Axis)						Max. Allowable Load at Slot Face(lbs)	Column Loading Data
	Max Allowable Uniform Load(lbs)	Deflection at Uniform Load(in)	Uniform Load at Deflection					Max. Column Load Applied at C.G.
	Max Allowable Uniform Load(lbs)	Deflection at Uniform Load(in)	Span/180 Deflection(lbs)	Span/240 Deflection(lbs)	Span/360 Deflection(lbs)	Weight of Channel(lbs)		k=.65(lbs)	k=.80(lbs)	k=1.0(lbs)	k=1.2(lbs)
24	1,760	0.06	1,760	1,760	1,760	5.6	4,440	17,180	16,750	16,050	15,020
36	1,170	0.13	1,170	1,170	880	8.3	4,300	16,170	15,020	13,300	11,460
48	880	0.23	880	740	500	11.1	4,090	14,470	12,690	10,220	7,850
60	700	0.36	640	480	320	13.9	3,780	12,540	10,220	7,290	5,060
72	580	0.52	440	330	220	16.7	3,390	10,530	7,850	5,060	3,510
84	500	0.71	320	240	160	19.5	2,920	8,570	5,810	3,720	**
96	440	0.93	250	190	120	22.2	2,520	6,740	4,450	2,850	**
108	390	1.17	200	150	100	25.0	2,170	5,320	3,510	**	**
120	350	1.44	160	120	80	27.8	1,880	4,310	2,850	**	**
144	290	2.07	110	80	60	33.4	**	2,990	**	**	**
168	250	2.83	80	60	40	38.9	**	**	**	**	**
192	220	3.72	60	50	NR	44.5	**	**	**	**	**
216	190	4.57	NR	NR	NR	50.0	**	**	**	**	**
240	170	5.61	NR	NR	NR	55.6	**	**	**	**	**

# Bearing Load may limit load | NR = Not Recommended | * Load limited by spot weld shear | **

The beam capacities shown above include the weight of the strut beam. The beam weight must be subtracted from these capacities to arrive at the net beam capacity.
Allowable beam loads are based on a uniformly loaded, simply supported beam. For capacities of a beam loaded at midspan at a single point, multiply the beam capacity by 50% and deflection by 80%.
The above chart shows beam capacities for strut without holes. For strut with holes, multiply by the following:
- OS by 88%
- RS (⁹/₁₆ holes) by 88%
- KO by 82%
- OS3 by 90%
- RS-3/4-MOD (³/₄ holes) by 85%
Refer to the latest Haydon Engineering Catalog in our Literature Section for reduction factors for unbraced lengths or call us 1-800-242-9366.

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