Unistrut P5500 - 1-5/8" x 2 7/16", 12 Gauge Metal Framing Channel


Elements of Section - P5500
Area of Section 0.726 in2 (4.7 cm2)
Axis 1-1 Axis 2-2
Moment of Inertia (I)
0.522 in4 (21.7 cm4)
0.334 in4 (13.9 cm4)
Section Modulus (S)
0.390 in3 (6.4 cm3)
0.411 in3 (6.7 cm3)
Radius of Gyration (r)
0.848 in (2.2 cm )
0.679 in (1.7 cm )

Raw steel conforms to the following ASTM specifications:

GAUGE FINISH ASTM NO.
12
GR & HG
A1011 SS GR 33
PG
A653 GR 33
14
GR & HG
A1011 SS GR 33
PG
A653 GR 33
16
GR & HG
A1011 SS GR 33
PG
A653 GR 33
19
GR
A1008

GR = Perma-Green® III
PG = Pre-Galvanized Zinc
HG = Hot-Dipped Galvanized

 

Part No. Finish Length (ft) Weight Per Foot
P5500-10-GR
Perma-Green® III
10'
2.470 lbs.
P5500-20-GR
Perma-Green® III
20'
2.470 lbs.
P5500-10-PG
Pre-Galvanized Zinc
10'
2.470 lbs.
P5500-20-PG
Pre-Galvanized Zinc
20'
2.470 lbs.
P5500-10-HG
Hot-Dipped Galvanized
10'
2.618 lbs.
P5500-20-HG
Hot-Dipped Galvanized
20'
2.618 lbs.
P5500-10-ZD
Perma-Gold™ 
10'
2.470 lbs.
P5500-20-ZD
Perma-Gold™ 
20'
2.470 lbs.
P5500-10-PL
 Plain 
10'
2.470 lbs.
P5500-20-PL
 Plain 
20'
2.470 lbs.
P5500-10-EA
Extruded Aluminum 
10'
0.970 lbs.
P5500-20-EA
Extruded Aluminum 
20'
0.970 lbs.

View the Unistrut Finish Specifications PDF for detailed specifications on all finishes.

GR = Perma-Green® III
PG = Pre-Galvanized Zinc
HG = Hot-Dipped Galvanized
ZD = Perma-Gold™
PL = Plain
EA = Extruded Aluminum

Column Loading - P5500
Unbraced
Height
(in)
Allowable
Load at
Slot Face
(lbs)
Max Column Load
Applied at C.G.
K=0.65
(lbs)
K=0.80
(lbs)
K=1.0
(lbs)
K=1.2
(lbs)
24 4,640 13,840 12,570 10,840 9,190
36 3,970 11,050 9,190 7,030 5,370
48 3,180 8,420 6,390 4,620 3,630
60 2,550 6,250 4,620 3,450 2,780
72 2,120 4,790 3,630 2,780 2,260
84 1,810 3,890 3,010 2,330 1,910
96 1,580 3,290 2,580 2,020 1,650
108 1,400 2,860 2,260 1,770 1,440
120 1,270 2,530 2,020 1,580 *
144 1,060 2,070 1,650 * *
168 920 1,750 1,380 * *

*KL/r > 200
See notes below for more information

Beam Loading - P5500
Span
(in)
Max
Allowable
Uniform
Load
(lbs)
Defl at
Uniform
load
(in)
Uniform Loading
at Deflection
Lateral
Bracing
Reduction
Factor
Span
/180
(lbs)
Span
/240
(lbs)
Span
/360
(lbs)
24 3,270 0.04 3,270 3,270 3,270 0.99
36 2,180 0.09 2,180 2,180 2,180 0.89
48 1,640 0.15 1,640 1,640 1,420 0.77
60 1,310 0.24 1,310 1,310 910 0.67
72 1,090 0.34 1,090 950 630 0.58
84 940 0.47 930 700 470 0.51
96 820 0.61 710 530 360 0.46
108 730 0.78 560 420 280 0.42
120 650 0.95 460 340 230 0.40
144 550 1.39 320 240 160 0.36
168 470 1.89 230 170 120 0.32
192 410 2.46 180 130 90 0.30
216 360 3.07 140 110 70 0.28
240 330 3.86 110 90 60 0.26

See notes below for more information

Notes:

1. Beam loads are given in total uniform load (W Lbs) not uniform load (w lbs/ft or w lbs/in).

2. Beam loads are based on a simple span and assumed to be adequately laterally braced. Unbraced spans can reduce beam load carrying capacity. Refer to the linked page for reduction factors for unbraced lengths from 2 to 20 feet.

3. For pierced channel, multiply beam loads by the following factor:

  • "KO" Series .......95%
  • "T" Series ..........85%
  • "HS" Series .......90%
  • "SL" Series ........85%
  • "H3" Series ........90%
  • "DS" Series ........70%
  • 4. Deduct channel weight from the beam loads.

    5. For concentrated midspan point loads, multiply beam loads by 50% and the corresponding deflection by 80%. Follow this link for information regarding other load conditions.

    6. All beam loads are for bending about Axis 1-1.

    Sample calculation #1:

    Here is a sample calculation to demonstrate the beam loading charts, and the load reduction factors.

    Say we have an 6’ span of P1000sl, and want to see what the load capacity is for a point load.

    Per the charts, P1000 is good for a maximum allowable uniform load (not load per foot) of 560 lbs. In referencing the notes below, we have the following load reductions:

    - X .85 for the sl

    - X .5 for a point load in the center

    - X .78 load reduction per page 56

    Therefore 560 lbs x .85 x .5 x .78 = 185 lbs.

    Sample Calculation #2.

    Say we have a 5’ span of P1001, and want to see the load capacity for a point load.

    Per the charts, p1001 is good for a maximum allowable uniform load (not load per foot) of 1,910 lbs. In referencing the notes below, we have the following load reductions:

    - X .5 for a point load in the center

    - X .97 load reduction

    Therefore 1,910 lbs x .5 x. 97 = 926 lbs.

    Note that these assume that the strut connection is able to handle the load. It is the responsibility of you and your Engineer to review all calculations and connections, and to verify that all items are installed per Unistrut requirements. Unistrut Service Company takes no responsibility for the misuse of information provided. Local codes may dictate more stringent requirements.

Available Piercings and Combinations
P5500HS P5500KO P5500SL P5500T

Dimensional Data for Pierced & Slotted Channels:

DS = Double Slotted. Slots are 2-3/4" (70mm) x 7/8" (22mm). 3-1/2"(89mm) on Center with 3/4"(19mm) spacing between slots.
HS = Round Holes on one side. Holes are 9/16" (14mm) in Diameter. 1-7/8" (48mm) on Center.
H3 = Round Holes on all three sides. Holes are 9/16" (14mm) in Diameter. 1-7/8" (48mm) on Center.
KO = Knockouts. Knockouts are 7/8" (22mm) in Diameter. 6" (152mm) on Center.
SL = Long Slots. Slots are 3" (76mm) x 13/32" (10.3mm). 4"(102mm) on Center.
T = Slotted. Slots are 1-1/8" (29mm) x 9/16" (14mm). 2"(51mm) on Center.



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