P3840 - Hinged Seismic Retrofit Brace Fitting (for Strut)
The P3840 is an adjustable angle retrofit fitting for use primarily with seismic braces. This fitting can be used to attach a strut brace to a trapeze or other strut connection.
As a retrofit fitting, this product can be used to attach a seismic brace to an existing support without the need to disassemble that support.
The P3860 platform is not included in this assembly and is sold separately.
This fitting is pre-approved for the below seismic loads on page 5c.3 of Unistrut's OPM-0295-13.
As a retrofit fitting, this product can be used to attach a seismic brace to an existing support without the need to disassemble that support.
The P3860 platform is not included in this assembly and is sold separately.
This fitting is pre-approved for the below seismic loads on page 5c.3 of Unistrut's OPM-0295-13.
| Part No. | Finish | Product Weight / Piece (lbs) |
|---|---|---|
| P3840 | EG | 1.2 |
Seismic Design Loads
Notes:
- Seismic Design Loads only apply to UNISTRUT brand products. Look for "UNISTRUT" on the part.
- Seismic Design Loads are based on FM1950-10 dynamic testing with 12 ga. channel and a safety factor of 1.5.
- 1/2" Unistrut Channel Nut and Cap Screw torqued to 50 ft-lbs required for installation.
- Reference page 5c.3 of Unistrut OPM-0295-13.
General Specifications
Standard Dimensions (Unless Shown Otherwise on Drawing):
- Hole Diameter: 9/16" (14mm)
- Hole Spacing (From End): 13/16" (21mm)
- Hole Spacing (On-Center): 1 7/8" (48mm)
- Width: 1 5/8" (41mm)
- Thickness:
- 1/4" (6.4mm) with steel meeting or exceeding ASTM A1011 SS GR 33, or
- 0.220" (5.6mm) with steel meeting or exceeding ASTM A1011 HSLAS GR 45
Note:
- When used for mechanical supports, load capacities of brackets and fittings should be in compliance with the American Standard Code for Pressure Piping.
Materials & Finishes
Materials & Finishes:
- Electrogalvanized (EG): Conforms to ASTM B633, Type III SC1 or SC3
