Stitch-Tie Applications

Applications for CTP Stitch-Tie

 

Reconnecting Multi Wythes Brick

 

Brick Veneer to Concrete Backup

 

Brick Veneer to Hollow or Solid CMU Backup

 

Brick Veneer to Clay Tile Backup

 

Travertine or Limestone Panels to Concrete Backup

 

Terra Cotta to Concrete or Masonry Backup

 

Brick Veneer to Wood

 

Brick Veneer to Metal

 

Asymmetric Wall Tie Detail

 

Pinning and Re-Anchoring:

The CTP Stitch-Tie is a Stainless Steel (Type 304) pinning solution for re-anchoring existing veneers to various sub-strates.  The process eliminates the need to tear down and replace existing facades and preserve the beauty and historical integrity of the existing building.  CTP Stitch-Tie pins are installed in predrilled holes by use of a dry set tool and a rotary hammer.  The percussion action of the drill will create the driving forces necessary for the spiral shaped tie to thread into the building material.  Once installed, the helical shape offers an in-plane flexible connector between wythes of material, while maintaining a threaded connection to resist out of plane loading for both tension and compression resistance.  The CTP Stitch Tie does not draw walls together- therefore tension forces between wythes are not present.  They are installed in relatively small holes that are easily patched and concealed.  Various diameters and lengths are available for numberous applications.  CTP Stitch-Tie can also be field trimmed using cutters for optimum length requirements.  

Anchor Spacing

CTP Stitch-Tie anchors are typically installed at one anchor per 2 square feet of veneer area to be retrofitted.  It is recommended that you refer to your local building codes and standards for spacing condition requirements of wall ties and anchors for appropriate compliance.

 

CTP Stitch Tie Lintel and Shelf Angle Support:

CTP Stitch-Tie stainless steel helical wall ties can be used for providing temporary stability for brick veneer walls above openings created for the repair or replacement of lintels or self angles.  

Data supplied is based on the resulting stiffness of 8mm CTP Stitch-Tie at various cavities: 

1" cavity= 1,264 lb/in   *   2" cavity= 316 lb/in    *    3" cavity = 140 lb/in 

 

1.) Stabilize veneer above opening using 8mm or 10mm CTP Stitch-Ties.

2.) Space CTP Stitch-Tie anchors:

3.) First row of CTP Stitch-Ties to be installed in the lower bed joint of the remaining course above opening, supporting brick above.

4.) Openings 8ft and larger should have a greater number of CTP Stitch-Ties populate the center area of veneer above the middle of the opening.  To accomplish this reduce the horizontal placement of two CTP Stitch-Ties every other course by adding them to the vertical field of brick.  

 

 

Crack Repair

Repair cracked brick veneers by pointing a 6mm x 40" long CTP Stitch-Tie bar across the distressed section.  Bed the bar equally across the distressed section.  Bed the bar in CTP Stitch-Tie grout, or compatible mortar, approximately 1" deep in the 1-1/2" (minimum) cut bed joint, and then finish the process by pointing the last 1/2" with compatible mortar.  Space CTP Stitch-Tie bars vertically at 6 course intervals along the length of crack, above and below its ending.  

 

CTP  Concrete Patch-Tie Anchoring

Applications

The CTP Concrete Patch-Tie is a stainless steel helical shaped stitch-tie anchor and is used to provide a non-corrosive mechanical connection between damaged concrete and patching material.  The anchoring system is typically applied with concrete patch repairs to balconies, curbs, coping, precast, columns, beams flat work, etc. as a means to key  the patch material mechanically to the parent structure.  The pin can be used to attach patches to limestone.  

 

Features

  • Spiral shape creates a threaded connection to base material
  • Manufactured of 300 Series Stainless Steel
  • Positive connection and effective length for most patching applications
  • Manufactured shape provides excellent bonding capabilities
  • Installs quick and easy
Description
The CTP Concrete Patch-Tie is a nominal 8mm diameter helical shaped anchor that is manufactured of type 304 stainless steel.  It is available in 3" lengths.  The thread pitch is 0.79 threads per inch and cross sectional area is 0016 sq in.  Typical yield is 108,000psi and tensile of 128,000psi.  The minimum embedment is 1-3/4" in the concrete sub-strata which provides a 1-1/4" embedment for the patching material.  Ultimate tension capacity equals 1200lbs. in 3,500psi concrete.
Installation
  1. Clean area to be patched and remove any loose material.  Treat exposed rebar as required.
  2. Drill a 1/4" hole in the concrete 1-3/4" - 2" deep.  Ties should be spaced one per 6" in all directions, and a 2" edge distance is required.  A minimum of 2 CTP Concrete Patch-Tie per patch is required.  
  3. Using the CTP Concrete Patch-Tie setting tool, install the anchor in the pre-drilled hole with the aid of a rotary hammer (SDS preferred).  Hammer into place until the tool bottoms out.  
  4. The exposed tie portion should not extend above the patch height.  If so, trim or bend anchor to attain th proper profile. 
  5. Apply patching material.