Simpson Strong-Tie FSC Floor Span Connector
As an alternative to coil strap, the FSC-Floor Span Connector connects upper floors to lower floors from the inside of the wall. The convenient obround holes make installation in narrow wall cavities easy. Installs with a 3/8" all thread rod, nut and washer (not included).
MATERIAL: See table
FINISH: Galvanized
INSTALLATION:
- Can be used on a single 2x stud.
- Threaded rod, washers and nuts are not supplied with the FSC.
- Use 3/8" threaded rod grade A307 or better, with matching nuts and cut washers.
- FSC may be installed a maximum of 18" from the sill or top plates.
- Drill 1/2" to 3/4" diameter hole through the plates for threaded rod access. The hole should be located approximately 11/2" away from the face of stud used for FSC attachment.
- Nails can be installed up to a 30-degree angle with no reduction in load capacity.
CODES: See page 12 for Code Reference Key Chart.
| Model No. | Ga | Fasteners Stud | Fasteners Anchor | Allowable Tension Load (160) | Code Ref. | |
|---|---|---|---|---|---|---|
| DF/SP | SPF/HF | |||||
| FSC | 12 | 15-10dx11/2 | 3/8" ATR | 1830 | 1570 | IP1, F25 |
Notes:
- The allowable loads have been increased 60% for wind or earthquake loading with no further increase allowed; reduce where other loads govern.
- Load values are based on a minimum lumber thickness of 11/2".
- Standard cut washer is required with the 3/8" all thread rod.
- The FSC can be used on offset studs provided the horizontal offset is no greater than 3". Refer to flier F-FSC for more information (see page 191 for details).
- NAILS: 10dx11/2 = 0.148" dia. x 11/2" long.
See page 16-17 for other nail sizes and information.
[Diagram: A vertical 2x stud is shown connecting to a horizontal beam. The FSC Floor Span Connector is attached to the stud and the beam using nails and a 3/8" threaded rod with nuts and washers. The maximum allowable distance from the sill or top plates is indicated as 18 inches.]
MSTC48B3/MSTC66B3 Pre-Bent Straps
The MSTC48B3 and MSTC66B3 are pre-bent straps designed to transfer tension load from an upper story shearwall to a beam on the story below.
MATERIAL: 14 gauge
FINISH: Galvanized
CODES: See page 12 for Code Reference Key Chart.
| Model No. | Dimensions Beam Width (min) | Dimensions Beam Depth (min) | Fasteners Studs/Post | Fasteners Face | Fasteners Bottom | Allowable Tension Loads (160) | Code Ref. | |
|---|---|---|---|---|---|---|---|---|
| No Nails Req'd | DF/SP | SPF/HF | ||||||
| MSTC48B3 | 3" | 91/4" | 38-10d | 4-10d | 12-10d | 3930 | 3380 | F26 |
| MSTC66B3 | 3" | 111/4" | 38-10d | 4-10d | 14-10d | 4440 | 3820 | F25 |
Notes:
- Using fewer than 38 nails in the studs/post will reduce the capacity of the connection. To calculate a reduced capacity use 129 lbs. per nail for DFL/SYP or 112 lbs. per nail for HF/SPF.
- Nails in studs/post shall be installed symmetrically. Nails may be installed over the entire length of the strap over the studs/post.
- The 3" wide beam may be double 2x members.
- MSTC48B3 and MSTC66B3 installed over wood structural panel sheathing up to 1/2" thick achieve 0.85 of table loads.
- Loads govern by the lower of .125" deflection from static tests on wood members, steel ultimate divided by 2, or the calculated nail values.
- NAILS: 16d = 0.162" dia. x 31/2" long, 10d = 0.148" dia. x 3" long.
See page 16-17 for other nail sizes and information.
[Diagram: Shows the MSTC48B3 strap installed on a stud and beam. It indicates the placement of face nails and bottom nails, and the minimum length of nails required. The diagram also shows the dimensions of the beam and stud.]
[Diagram: Shows the MSTC66B3 strap installed on a stud and beam with a rim joist. It indicates the placement of face nails and bottom nails, and the minimum length of nails required. The diagram also shows the dimensions of the beam and stud.]
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