Technical Specifications

103
Angles & Straps
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HTWM Masonry Twist Straps
The HTWM Twist Straps are designed for truss to concrete or masonry
connections. Offer uplift resistance with variable heel height and
positioning applications.
Materials: 14 gauge
Finish: G90 galvanizing
Codes: See page 11 for Code Reference Chart
Installation:
• Use all specied fasteners. See Product Notes pages 17 .
• Strap may be attached to either side of grouted masonry
or concrete wall with a minimum of (1) #5 horizontal rebar.
• Drill hole in concrete or masonry with manufacturers
prescribed 1/4" masonry drill. Install fasteners into concrete
or masonry per manufacturer’s specication.
• Grout or concrete compressive strength shall be
2,500 psi at 28 days.
• Twist straps do not have to be wrapped over the truss
to achieve the allowable loads.
• Moisture barrier may be required.
Ref. No. W L L1 Qty Qty Qty
HTWM16 HTSM16, MTSM16 14 1-1/4 16 5-3/4 4 1/4" x 1-3/4" 4 1/4" x 1-3/4" 8 10d x 1-1/2 1225 1145
HTWM20 HTSM20, MTSM20 14 1-1/4 20 7-3/4 4 1/4" x 1-3/4" 4 1/4" x 1-3/4" 8 10d x 1-1/2 1225 1145
1) Allowable loads have been increased 60% for wind or seismic loads; no further increase shall be permitted.
2) Use Powers Fasteners 1/4" x 1-3/4" Wedge-Bolt®; or equal, installed in accordance with manufacturer's specification.
3)
NAILS:
10d x 1-1/2 nails are 0.148" dia. x 1-1/2" long.
USP
Stock No.
Steel
Gauge
Code
Ref.
F26
Dimensions (in)
Wedge
Bolts
Fastener Schedule
Wedge
Bolts
Nail
Type
DF/SP
Allowable
Loads (Lbs.)
1
Uplift
160%
Uplift
160%
S-P-F
Allowable
Loads (Lbs.)
1
CMU
2
Concrete
2
Truss/Rafter
3
Typical HTWM
installation
Typical KSA installation
Typical KHSA4
installation
Typical KSA installation
HTWM
KSA – 12 gauge seismic horizontal tension tie.
KHSA – 3 gauge. Designed for installation with bolts only.
Materials: See chart
Finish: KSA – G90 galvanizing;
KHSA – USP primer
Codes: See page 11 for Code Reference Chart
KHSA / KSA Connector Straps
Continued on next page
L
L1
L1
W
W
O
15" max
Hanger
Connector strap
Allowable loads
0
18° max
D1
D2
Angles & Straps