Simpson Strong-Tie LDSS48 LDSS® 3-3/4 in. x 47-1/2 in. 18-Gauge Galvanized Diaphragm Spline Strap
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Simpson Strong-Tie LDSS48 LDSS® 3-3/4 in. x 47-1/2 in. 18-Gauge Galvanized Diaphragm Spline Strap

SKU: LDSS48
📦 Available to Order — Add to Quote
Madison Township Lumber • Matawan, NJ
(732) 566-5555
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Product Description

The LDSS® light diaphragm spline strap is designed to be placed directly on top of CLT (cross-laminated timber) and other mass timber panels to connect them together. Unlike plywood splines, the LDSS does not require routing. As part of the Simpson Strong-Tie® complete LDSS spline solution, the steel strap installs easily and safely using our PRO300SG2 Quik Drive® tool and collated Strong-Drive® WSV Subfloor screws. The LDSS features an innovative embossed hole design that helps guide the installation tool and increase fastener capacity.

Available Sizes & Options

SKUProductStatus
LDSS48Simpson Strong-Tie LDSS48 LDSS® 3-3/4 in. x 47-1/2 in. 18-Gauge Galvanized Diaphragm Spline Strap CurrentAvailable
IUS1811188Simpson Strong-Tie 1 3/4 x 11-7/8 I Joist HangerAvailable
HUS18110Simpson Strong-Tie 1 3/4 x 9 1/2 Sloped Face Mount HangerAvailable
SUR18111Simpson Strong-Tie 1-3/4 x 11-7/8 Skew 45 R I-beam/lvlAvailable
IUS18195Simpson Strong-Tie 1-3/4 x 9-1/2 Side Mount SingAvailable
1212HLSimpson Strong-Tie 1212HL HL 12 in. x 12 in. 7-Gauge Galvanized Heavy L StrapAvailable
1212HLHDGSimpson Strong-Tie 1212HLHDG HL 12 in. x 12 in. 7-Gauge Hot-Dip Galvanized Heavy L StrapAvailable
1212HLPCSimpson Strong-Tie 1212HLPC HLPC 12 in. x 12 in. 7-Gauge Black Powder-Coated Ornamental L StrapAvailable
1212HTSimpson Strong-Tie 1212HT HT 12 in. x 12 in. 7-Gauge Galvanized Heavy T StrapAvailable
1212HTHDGSimpson Strong-Tie 1212HTHDG HT 12 in. x 12 in. 7-Gauge Hot-Dip Galvanized Heavy T StrapAvailable
1212HTPCSimpson Strong-Tie 1212HTPC HTPC 12 in. x 12 in. 7-Gauge Black Powder-Coated Ornamental T StrapAvailable
1212LSimpson Strong-Tie 1212L 12 in. x 12 in. 14-Gauge Galvanized L StrapAvailable
1212L-RSimpson Strong-Tie 1212L-R 12 in. x 12 in. 14-Gauge Galvanized L StrapAvailable
1212TSimpson Strong-Tie 1212T 12 in. x 12 in. 14-Gauge Galvanized T StrapAvailable
1212T-RSimpson Strong-Tie 1212T-R 12 in. x 12 in. 14-Gauge Galvanized T StrapAvailable
128TSimpson Strong-Tie 128T 12 in. x 8 in. 14-Gauge Galvanized T StrapAvailable
128T-RSimpson Strong-Tie 128T-R 12 in. x 8 in. 14-Gauge Galvanized T StrapAvailable
1616HTSimpson Strong-Tie 1616HT HT 16 in. x 16 in. 7-Gauge Galvanized Heavy T StrapAvailable
1616HTHDGSimpson Strong-Tie 1616HTHDG HT 16 in. x 16 in. 7-Gauge Hot-Dip Galvanized Heavy T StrapAvailable
1616HTPCSimpson Strong-Tie 1616HTPC HTPC 16 in. x 16 in. 7-Gauge Black Powder-Coated Ornamental T StrapAvailable
1616HTQSimpson Strong-Tie 1616HTQ HTQ 16 in. x 16 in. 7-Gauge Hot-Dip Galvanized Heavy T StrapAvailable

Product Details

Key Features

  • No routing required; the strap can be placed directly on top of mass timber panels, reducing manufacturing time and cost
  • Less susceptible to moisture damage than plywood splines, reducing need for expensive repairs
  • Embossed hole helps guide the installation tool into the hold and increases capacity per fastener
  • Tested for in-plane shear values
  • Can be used as part of a complete spline solution throughout a project for faster installation and to save on the total cost of spline connections

Material

  • 18 gauge

Finish

  • Galvanized

Options

  • The LDSS has also been tested with 0.148" x 2 1/2" nails for specifiers or contractors who prefer a nailed connection. The embossed hole allows for the use of a power framing nailer using concentric, full round-head nails.

Installation

  1. Place the strap on the surface of the panels with the centerline notches aligned with joint between adjacent panels.
  2. From a standing position, hold tool perpendicular to the face of the strap and place the noseclip over the embossed feature. Drive the screw. Repeat.
  3. Use all specified fasteners.

Related Links

Catalog Pages

Buy Simpson Strong-Tie LDSS48 LDSS® 3-3/4 in. x 47-1/2 in. 18-Gauge Galvanized Diaphragm Spline Strap in Central New Jersey

Madison Township Lumber & Supply has been serving Matawan, East Brunswick, Sayreville, and all of Middlesex County since 1962.

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Simpson Strong-Tie LDSS48 LDSS® 3-3/4 in. x 47-1/2 in.…