DriftTrak® For Bypass
This drift slide track incorporates the DriftTrak member with the DriftTrak DTSLB slide angle or DriftTrak DTLB rigid angle and is used to connect exterior cold-formed steel curtain wall studs to the primary structure while bypassing the slab. Use the DTSLB clip angle for up to 2” vertical deflection (1” up and down) or DTLB clip angle for a rigid connection with no vertical deflection. The DriftTrak provides free lateral drift or the DTSLB/DTLB can be locked into with a locking angle place to prevent lateral movement.
Features
- DTSLB is ICC-ES Approved, report #ESR-2049
- Grooves in 1” leg pass over fastener heads
- DTSLB-HD clips without notches for greater F2 outward load capacity.
- Locking Angle DT-LA is available to lock the horizontal movement of the wall panel after installation for cases of no drift requirements.
- DriftTrak is available in 12’ lengths.
- Load-rated positive mechanical attachment at each stud
- Patented Step Bushing Technology provides friction-free motion for smooth vertical deflection
- Eliminates loose friction-held assemblies, heavy deep-leg track, & top row of wall bridging/strapping
- Load-rated #12 screws provided for vertical deflection connection to stud web
- Track DTLB, & DTSLB-HD manufactured with certified, 50ksi, 97mil, G90 cold-formed steel
- DTSLB manufactured with certified, 50ksi, 68mil, G90 cold-formed steel
Order Information
Qty/Box
DTSLB362/400
DTSLB362/400-HD
DTSLB600
DTSLB600-HD
DTSLB800
DTSLB800-HD
DTLB600
DTLB600-HD
DTLB800
DTLB800-HD
DT-LA (Locking Angle)
DT-12ft
Lbs/Box
DTSLB362/400
DTSLB362/400-HD
DTSLB600
DTSLB600-HD
DTSLB800
DTSLB800-HD
DTLB600
DTLB600-HD
DTLB800
DTLB800-HD
DT-LA (Locking Angle)
DT-12ft
Qty/Skid
DTSLB362/400
DTSLB362/400-HD
DTSLB600
DTSLB600-HD
DTSLB800
DTSLB800-HD
DTLB600
DTLB600-HD
DTLB800
DTLB800-HD
DT-LA (Locking Angle)
DT-12ft
Lbs/Skid
DTSLB362/400
DTSLB362/400-HD
DTSLB600
DTSLB600-HD
DTSLB800
DTSLB800-HD
DTLB600
DTLB600-HD
DTLB800
DTLB800-HD
DT-LA (Locking Angle)
DT-12ft
Nomenclature: The DriftTrack assembly requires the member (DT-12ft) and the connector (DTSLB/DTLB). DTSLB is classified by multiplying stud depth by 100, followed by “HD,” based on F2 strength required. Refer to load tables.*
Example:6″ stud depth, with an outward load (F2) of 1,000 lbs
Designate: DT-12ft & DTSLB600-HD
* Clips (DTSLB/DTLB) and track (DT-12ft) are ordered/sold separately.
** Notches are standard in DriftTrak DTSLB. For greater F2 outward load capacity, use DTSLB-HD clips without notches. Refer to Allowable Load Table.
Material Composition
Track, DTLB, & DTSLB-HD Material: ASTM A1003/A1003M Structural Grade 50 (340) Type H, ST50H (ST340H): 50ksi (340MPa) minimum yield strength, 65ksi (450MPa) minimum tensile strength, 97mil minimum thickness (12 gauge, 0.1017″ design thickness) with ASTM A653/A653M G60 (Z180) hot dipped galvanized coating.
DTSLB Clip Material: ASTM A1003/A1003M Structural Grade 50 (340) Type H, ST50H (ST340H): 50ksi (340MPa) minimum yield strength, 65ksi (450MPa) minimum tensile strength, 68mil minimum thickness (14 gauge, 0.0713″ design thickness) with ASTM A653/A653M G90 (Z275) hot dipped galvanized coating.
Catalogs
For a full list of our product catalogs, specification sections, inspection checklists, and research reports please click here.
DriftTrak® Bypass Downloads
DriftTrak® Bypass Applications
The unique design of DriftTrak allows it to be installed to provide any combination of movement allowing or rigid connections in the vertical and horizontal directions. Attachment to the primary structure may be made with a PAF, screw/bolt anchors, or weld and is dependent upon the base material (steel or concrete) and the design configuration.
Curtain Wall Slab Bypass as a Drift & Vertical Deflection Connection
Curtain Wall Slab Bypass as a Drift Connection with No Vertical Deflection
Installation Instructions
- Fastener Pattern 1 replicates a condition of out-of-plane wind or seismic force with no vertical live load deflection and full in-plane drift.
- Fastener Pattern 2 replicates a condition of out-of-plane wind or seismic force with full vertical live load deflection and full in-plane drift.
Notes:
- Allow a minimum of 0.875″ from the structure to the inside flange of the bypassing stud to allow for track attachment.
- One row of bridging is recommended at a maximum distance of 12″ from DriftTrak to resist torsional effects.
- To lock lateral movement, fasten DT-LA (Locking Angle) to DriftTrak components using #12 screws (not included). Locking is recommended at 4 ft. spacing or 3rd stud, max.
DriftTrak® Bypass Allowable Loads
Notes:
- Design loads are for attachment of DriftTrak DTSLB to stud only. Load tables reflect horizontal loads (F2).
- Attachment to structure engineered by others.
- Allowable loads have not been increased for wind, seismic, or other factors.
- #12 screws are provided with each step bushing for attachment to stud. Load requirements don’t always justify use of a third screw.
- Clips are manufactured to fit into the DriftTrak and provide up to 2″ of vertical deflection (1″ up and 1″ down), and free lateral movement of the structure.
- Allow a minimum of 0.875″ from the structure to the inside flange of the bypassing stud to allow for track attachment. Standard offset of stud from the open face of the track should not exceed 1.25″.
- One row of bridging is recommended at a maximum distance of 18” from DriftTrak if no other stud lateral restraint is present.
- For LRFD Design Strengths refer to ICC-ESR-2049.
Load Direction
Screw Pattern 1:
Replicates a condition of out-of-plane wind or seismic force with no vertical live load deflection and full in-plane drift.
Screw Pattern 2:
Allowable Loads (lbs): DriftTrak® DTLB & DTLB-HD: F2 & 3
Notes:
- DTSLB and DTSLB-HD clips are manufactured to fi t into the DriftTrak and provide up to 2ʺ of vertical deflection (1ʺ up and 1ʺ down) while allowing free lateral movement of the structure.
- DTLB and DTLB-HD clips are manufactured to fi t into the DriftTrak and provide a rigid connection to the stud while allowing free lateral movement of the structure.
- Design loads are for attachment of DriftTrak DTSLB and DTSLB-HD to stud only. Load tables refl ect horizontal loads (F2).
- Design loads are for attachment of DriftTrak DTLB and DTLB-HD to stud only. Load tables refl ect horizontal loads (F2) and vertical loads (F3).
- Loads listed refl ect force in a single direction. When multiple loads react on the connection, it is the responsibility of the designer to check the interaction of forces.
- Torsional eff ects are considered on screw group for F3 allowable loads. It is assumed that all of the torsional moment is taken by the connection to the stud.
- Attachment to structure engineered by others.
- Allowable loads have not been increased for wind, seismic, or other factors.
- #12 screws are provided with DTSLB and DTSLB-HD clips for each step bushing for attachment to stud. Load requirements don’t always justify use of a third screw.
- Use 8” DriftTrak fastener spacing to structure (or welded on each side of track) for DTLB and DTLB-HD clips. 8″ spacing or 16″ spacing can be used for DTSLB and DTSLB-HD clips. Size of fasteners or weld is engineered by others.
- Notches are standard in DriftTrak DTSLB and DTLB. For greater F2 and F3 load capacities, use DTSLB-HD and DTLB-HD clips w/o notches. Refer to allowable load tables.
- One row of bridging is recommended at a maximum distance of 18” from DriftTrak if no other stud lateral restraint is present.
- Allow a minimum of 0.875ʺ from the structure to the inside fl ange of the bypassing stud to allow for track attachment.
- Total Off set is measured as track fl ange width plus the gap from the open face of the track to the inside face of the stud.