Use and Care Manual
292
Copyright © 2020 MiTek Industries, Inc. All Rights Reserved
Plated Truss
Plated Truss
MiTek
®
Product Catalog
VTT Valley Truss Tie
Download
3
Download
3
Ref. No. W H Qty Type Qty Type 115%,125%,160% 115%,125%,160%
< 4/12 840 375 685 270
4/12 to < 8/12 840 445 685 325
8/12 to 12/12 840 480 685 400
1
)
U
p
lift Loads have been increased 60% for wind or seismic loads; no further increase shall be
p
ermitted.
2
)
U
p
lift loads are based on installation over 7/16" or 15/32" sheathin
g
.
3
)
Downloads have been increased for snow, construction and wind loads; no further increase shall be
p
ermitted.
4
)
NAILS: 10d x 1-1/2 nails are 0.148" dia. x 1-1/2" lon
g
, 10d nails are 0.148" dia. x 3" lon
g
.
10d x 1-1/2 VTT VTCR 18 2-3/4 3-1/4
Code
Ref.
--
Dimensions (in)
Fastener Schedule
4
MiTek USP
Stock No.
Steel
Gauge
Supporting
Framing
Valley Truss
Supporting
Roof
Pitch
Uplift
1,2
160%
Uplift
1,2
160%
DF/SP
Allowable Loads (Lbs.)
S-P-F
Allowable Loads (Lbs.)
3 10d 3
Typical VTT
side view installation
Typical VTT
front view installation
VTT Valley Truss Tie is designed to transfer loads from a valley truss into
the supporting structure below. It also resists the sliding forces from
downward loads when the valley truss is set upon a sloped lower roof.
The ability to resist the sliding force eliminates the need for support
wedges under the valley truss bottom chord or special order valley roof
trusses with a bevel-cut bottom chord.
• Double-dimple nail holes assure the nails are driven in at the correct
angle into the supporting member every time.
• Flat design requires no eld bending to match the supporting
roof pitch.
• 2-Ply steel with stiffening ribs provides a high resistance to sliding
forces from downward loads.
• Prong teeth help hold the VTT in place while nailing.
• Accommodates supporting roof pitches from 0/12 to 12/12.
• Pitch guide embossments allow attachment to valley truss on ground.
Materials: 18 gauge
Finish: G90 galvanizing
Patents: U.S. Patent No. 9,920,514 B1
Installation:
• Mark the location of the supporting truss located below the lower
roof sheathing.
• Place the VTT at against the valley truss, centered over the top chord
of the truss below. Tap the top edge down with a hammer to engage
the prong teeth.
• Nail the VTT to the bottom chord of the valley truss using
(3) 10d x 1-1/2" nails.
• Install (3) 10d common nails through the double-dimples and drive
them through the sheathing into the top chord of the supporting
truss below. One nail will be centered in the top chord below.
The other two nails are driven in at preset angles guided by
the dimple holes.
Alternate Installation for Ground/Pre-Placement of VTT
• Mark the location of the supporting truss located below the lower
roof sheathing. Center VTT horizontally on that mark.
• Use pitch guide embossments on part to locate the vertical position of
VTT. Pitch numbers on connector are the numerator in the pitch slope
ratio. (i.e. “6” indicates a 6/12 pitch, “12” indicates a 12/12 pitch, etc.)
• Secure the VTT to valley truss with (3) 10d x 1-1/2" nails.
• When valley truss is hoisted into proper position on roof, install
(3) 10d common nails through the double-dimples and drive them
through the sheathing into the top chord of the supporting truss
below. One nail will be centered in the top chord below. The other
two nails are driven in at a preset angles guided by the dimple holes.
VTT Front View VTT Back View
Prong teeth
Double-dimple
nail holes
Pitch guide
embossments
3-1/4"
Typical VTT installation
VTT
Lower roof
sheathing
Supporting
truss
Valley truss
Valley truss
VTT
Supporting
truss
Alternate Installation
for Ground / Pre-Placement
installation
Use pitch guide
on part to locate
vertical position
of VTT
Mark valley truss at supporting
truss framing member location
and center VTT horizontally on
that mark.
Secure with (3)
10d x 1-1/2"
nails
Lower roof
sheathing
Valley truss
VTT
Supporting
truss
(3) 10d nails
fastened to the
supporting framing
2-3/4"