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SJC Steel-Joist Connector

SJC

Rigid Connectors for Cold-Formed Steel Construction

This product's information may differ depending on the category of use. You are currently viewing details related to Rigid Connectors for Cold-Formed Steel Construction. You can also view product information related to the category: Joist Framing Connectors for Cold-Formed Steel Construction

SJC connectors have been specifically designed for various CFS joist, rafter and underside of metal-deck applications. The unique clip dimensions enable easy installation on the open side of joists and rafters with up to 3 1/2" flanges and return lips up to 3/4". For metal-deck applications, the prepunched 3/8" holes easily accommodate 6", 8", 10" and 12" on-center metal-deck flutes.

Key Features

  • Prepunched holes reduce installation cost by eliminating predrilling
  • Intuitive fastener hole positions ensure accurate clip installation in accordance with design, support a wide range of design and application requirements and provide installation flexibility
  • Angle lengths accommodate either hard-side or soft-side attachment for joists with return lips up to 3/4"
  • 4 1/2" leg length enables soft-side connections for joists with flanges up to 3 1/2"
  • Also accommodates kicker-to-metal-deck applications

Material

  • SJC — 68 mil (50 ksi); MSJC — 97 mil (50 ksi)

Finish

  • Galvanized (G90)

Installation

  • Use all specified fasteners/anchors
  • For 6" and 8" joists: SSC connectors are recommended

Related Literature

Product Information Tables

Load Tables

SJC Connectors – Steel-to-Steel Allowable Loads

  1. Min. fastener quantity and load values — fill all round holes; Max. fastener quantity and load values — fill all round and triangular holes; Inner fastener quantity and load values.
  2. Allowable loads are based on bracing of the members located within 12" of the connection.
  3. Maximum allowable load for connector that may not be exceeded when designing custom installations. Designer is responsible for member and fastener design.
  4. For 6" and 8" joists, SSC connectors are recommended.
  5. See more information on Simpson Strong-Tie fasteners.
SJC Installation with Carried Member Fasteners in Outer Row
SJC Installation with Carried Member Fasteners in Outer Row
(For min./max. load values)

SJC Connectors – Kicker Allowable Loads

  1. Loads apply to connectors installed perpendicular or parallel to metal-deck flutes, with minimum 33 mil (20 ga.) kicker.
  2. Kicker angle is the acute angle measured relative to the horizontal plane of the metal deck.
  3. The tabulated value for anchor tension is per anchor. Anchors must be designed for combined shear and tension. Simpson Strong-Tie anchorage solutions are tabulated below. Alternate anchors may be utilized if designed by others.
  4. See Fastening Systems and Direct Fastening for more information on Simpson Strong-Tie fasteners.
Kickers to Underside of Deck
Kickers to Underside of Deck

SJC and MSJC Kicker Anchorage Solutions



  1. Allowable loads have been determined using ACI 318-14 Chapter 17 anchorage calculations with the minimum concrete compressive strength, f'c and slab thickness listed.
  2. STB2 = 3/8" diameter Strong-Bolt® 2 carbon steel anchor, THD = 3/8" diameter Titen HD® screw anchor.
  3. Concrete over metal deck may be Normal Weight or Sand-Lightweight with f'c of 3,000 psi minimum and 2.5" minimum slab height above upper flute.
  4. Minimum deck flute height is 1.5" (distance from top flute to bottom flute). All other anchor installation requirements shall follow ICC-ES ESR-3037 and ICC-ES ESR-2713.
  5. Minimum Spacing, Edge and End distances for bottom of metal deck assemblies shall comply with those required in ICC-ES ESR-3037 for STB2 anchors and ICC-ES ESR-2713 for Titen HD anchors.
  6. Load values are based on ACI 318-14, condition B, load factors from ACI 318-14 Section 5.3, no supplemental edge reinforcement for uncracked concrete, ψc, v = 1.0 for cracked concrete, and periodic special inspection. Reference ICC-ES ESR-3037 and ICC-ES ESR-2713 for further information.
  7. Allowable Stress Design (ASD) values have been determined by multiplying Load Resistance Factor Design (LRFD) values by a conversion factor, Alpha (α), of 0.7 for seismic loads and 0.6 for wind loads. ASD values for other types or load combinations may be determined using alternate conversion factors.

SJC and MSJC Kicker Anchorage Solutions

  1. Allowable loads have been determined using ACI 318-14 Chapter 17 anchorage calculations with the minimum concrete compressive strength, f'c and slab thickness listed.
  2. STB2 = 3/8" diameter Strong-Bolt® 2 carbon steel anchor, THD = 3/8" diameter Titen HD® screw anchor.
  3. Concrete over metal deck may be Normal Weight or Sand-Lightweight with f'c of 3,000 psi minimum and 2.5" minimum slab height above upper flute.
  4. Minimum deck flute height is 1.5" (distance from top flute to bottom flute). All other anchor installation requirements shall follow ICC-ES ESR-3037 and ICC-ES ESR-2713.
  5. Minimum Spacing, Edge and End distances for bottom of metal deck assemblies shall comply with those required in ICC-ES ESR-3037 for STB2 anchors and ICC-ES ESR-2713 for Titen HD anchors.
  6. Load values are based on ACI 318-14, condition B, load factors from ACI 318-14 Section 5.3, no supplemental edge reinforcement for uncracked concrete, ψc,v = 1.0 for cracked concrete, and periodic special inspection. Reference ICC-ES ESR-3037 and ICC-ES ESR-2713 for further information.
  7. Allowable Stress Design (ASD) values have been determined by multiplying Load Resistance Factor Design (LRFD) values by a conversion factor, Alpha (α), of 0.7 for seismic loads and 0.6 for wind loads. ASD values for other types or load combinations may be determined using alternate conversion factors.
  8. Allowable anchor loads have been divided by an Omega (Ω) seismic factor of 1.5 or 2.5 for brittle failure as required by ACI 318-14 Chapter 17.

SJC and SSC Connectors – Soffit Stud Hanger Allowable Loads

  1. Loads apply to connectors installed perpendicular or parallel to metal-deck flutes.
  2. Stud member design per Designer. Tabulated loads for stud fasteners are based on a minimum stud thickness of 33 mil (20 ga.) with a yield stress of 33 ksi. For 30 mil interior studs with a yield strength of 33 ksi, multiply the tabulated values by 0.9.
  3. Anchor design per Designer. Note that the SJC requires the symmetrical placement of one anchor on each side of the stud centerline.
  4. For the bearing plate option, use Simpson Strong-Tie BP1/2-3 bearing plates at each 3/8"-diameter anchor. Bearing plates are sold separately.

Code Reports

Part IAPMO UES ER ICC-ES ESR City of Los Angeles State of Florida
MSJCSee specific model numbers for code listings.
MSJC10.25 ER-102 ER-238
MSJC8.25 ER-102 ER-238
SJCSee specific model numbers for code listings.
SJC10.25 ER-102 ER-238
SJC8.25 ER-102 ER-238

Drawings

Part Orthographic Perspective
MSJCNone None
MSJC10.25
MSJC10.25 front view
DWG DXF
MSJC10.25 left view
DWG DXF
MSJC10.25
DWG DXF
MSJC8.25
MSJC8.25 front view
DWG DXF
MSJC8.25 left view
DWG DXF
MSJC8.25
DWG DXF
SJCNone None
SJC10.25
SJC10.25 front view
DWG DXF
SJC10.25 left view
DWG DXF
SJC10.25
DWG DXF
SJC8.25
SJC8.25 front view
DWG DXF
SJC8.25 left view
DWG DXF
SJC8.25
DWG DXF