MidWall™

MidWall™ is The Steel Network's latest in a long line of enhancements to the metal framing industry, providing a tested alternative in partial wall assemblies.

MidWall is designed to support out-of-plane loading in cantilevered partial wall systems that are unsupported at the top track. The out-of-plane loads are transferred to the floor system through a ½" thick plate nested in the flanges of the member with two 3/8" diameter fasteners (or [one] 1/2" diameter fastener for 250MW) used for the connection. Available in two lengths, 24" and 48", MidWall may be used in place of standard framing members, or in conjunction with them to frame the wall.

MidWall

Value

  • Replaces labor/coordination of placing embedded angle into floor system
  • Guide holes for attachment of MidWall to the stud
  • Only certified steel is used
  • 3.625" and 6" Meets IBC criteria Section 1607.7.1 
  • Test data for 2.5" depth MidWall is available

 

 Patent #8,387,321

Downloads: Download Technical data Tech Sheet | Download drawing file DWG | Download specification data Specs Download BIM data BIM
  • Application Image
  • Installation
  • Nomenclature/Order Info
  • Allowable Loads
  • Design Info
  • Material Composition

MidWall™ 24” Assembly Example  

MidWall™ 48” Assembly Example  

MidWall 24" is generally used in interior half walls of less than 48" in height. Attach MidWall 24" to a 54mil stud with #12 screws through all pre-drilled guide holes. Other studs in the walls are typical infill studs. Maximum spacing between MidWall connectors is 36" o.c.  Contact TSN Technical Services at (888) 474-4876 for design recommendations.

 MidWall 48" is used in interior half walls equal to or more than 48" in height. Use one MidWall 48" as a substitute for a stud at the specified spacing, or attach to a 54 mil stud with #12 screws through all pre-drilled guide holes. Maximum spacing between MidWall connectors is 36" o.c.  Contact TSN for technical support regarding use in exterior or 6" wide walls.
  1. Place MidWall 24" against stud web. Place base plate to anchors through pre-drilled guide holes.
  2. Fasten anchor to floor with specified washers.
  3. Attach MidWall 24" to the stud web with #12 screw fasteners through guide holes (fill all holes in the vertical MidWall leg).

 
Quantity/Order Information  
Designation
Lbs/Piece
Pcs/Skid
Lbs/Skid
250MW-24  5.63 304 1711
250MW-48  10.33 152 1571
362MW-24  7.5 208 1558
362MW-48  13.5 104 1404
600MW-24  10.38 160 1662
600MW-48  18.31 80 1465
 MidWall Dimensions

Designation/Nomenclature

MidWall™ is currently available in two heights (24" and 48") and three depths (2.5", 3.625", & 6"). Product nomenclature lists the member depth first followed by the height in inches.

  • For 3.625", 24" MidWall, designate 362MW-24.
  • For 6", 48" MidWall, designate 600MW-48.
Wall Width (in.)
MidWall™ Member
Maximum
Point Load @
48" (ASD), lbs
Maximum Base
Moment, lbs-in.
2 1/2 250MW 138 6,150
3 5/8  362MW 332 15,940
6  600MW 407 19,540

Criteria

IBC 2009
Refer to Section 1607.7.1


Handrails and Guards:
- 50 lb/ft applied in any direction at the top of wall
- 200 lbs applied in any direction at any point at the top of the wall

Parapets & Ribbon Walls:
-Design Wind Pressure (psf)

Interior Half Walls:
- Design internal pressure

Applications:
- Handrails and Guards
- Interior Half Walls
- Parapets
- Ribbon Windows

Design Procedure

The top track spanning between MidWall members acts as a load distribution member capable of distributing localized loads to multiple MidWall members. It is recommended to design the track in these applications. Refer to the diagram at right for an example of the distribution of the point load, P to adjacent MidWall supports.  At the end of the wall, MidWall is required at adjacent stud spacings.  Designed spacing begins after two adjacent end supports.

 

  
Max. Applied Tension in One Anchor (lbs.) 362/600 MidWall™ 3/8” Anchorage Options (4,000 psi min. concrete strength)
1,500

3/8” Wedge-Bolt, 3” Embed. (Powers)
3/8" Carbon Steel Kwik Bolt 3 Expansion Anchor, 3 1/2” Embed. (Hilti)
2,000

3/8” Wedge-Bolt, 3 1/2” Embed. (Powers)
3/8" HAS-E Standard (ISO 898 Class 5.8) w/ HIT-HY 150 MAX Adhesive, 3 3/8" Embed. (Hilti)
3/8" ASTM A307 Threaded Rod w/ A7 Adhesive, 3 3/8" Embed. (Red Head)
2,500

3/8” Wedge-Bolt, 3 1/2” Embed. (Powers)
3/8" HAS-E Standard (ISO 898 Class 5.8) w/ HIT-HY 150 MAX Adhesive, 3 3/8" Embed. (Hilti)
3/8" ASTM A193 GR. B7 Threaded Rod w/ A7 Adhesive, 3 3/8" Embed. (Red Head)
3,000

3/8" HAS SS (AISI 304/316 SS) w/ HIT-HY 150 MAX Adhesive, 3 3/8" Embed. (Hilti)
Max. Applied Tension in One Anchor (lbs.) 250 MidWall™ 1/2” Anchorage Options (4,000 psi minimum concrete strength)
500

1/2” Wedge-Bolt, 2” Embed. (Powers)
1/2” Carbon Steel HUS-H Screw Anchor Mechanical, 2” Embed. (Hilti)
1,000

1/2” Wedge-Bolt, 2 1/2” Embed. (Powers)
1/2" Carbon Steel Kwik Bolt 3 Expansion Anchor, 2 1/4” Embed. (Hilti)
1/2" Trubolt Wedge, 2 1/4” Embed. (Red Head)
1,500

1/2” Carbon and Stainless Steel Power-Bolt, 2 1/2” Embed. (Powers)
1/2" Carbon Steel Kwik Bolt 3 Expansion Anchor, 3 1/2” Embed. (Hilti)

 

 

MidWall™: ASTM A1003/A 1003M, ASTM A653/A653M, Grade 50 (340), 50ksi (340MPa) minimum, 65ksi (450MPa) minimum yield strength, G-90 (Z275) hot-dipped galvanized coating. Material Thickness = 118mil (10 gauge, 0.1242” design thickness) for 250MW and 362MW.  Material Thickness = 97mil (12 gauge, 0.1017" design thickness) for 600MW.

MidWall™ Plate: ASTM A36/A36M 08, 36ksi (250MPa) minimum yield strength, 58-80ksi (400-550MPa) tensile strength, ½” thick.