Use and Care Manual

248
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Truss & Rafter
Truss & Rafter
MiTek
®
Product Catalog
DHTA Embedded Truss Anchors
The DHTA embedded truss anchor series offer high uplift capacity
with a two-strap design. The straps are attached to MiTek’s NOP style
plate which ensures proper placement of straps while also providing a
moisture barrier between the top of the wall and the truss.
Materials: DHTAxx-18 – 18 gauge; DHTAxx – 16 gauge
Finish: G90 galvanizing
Codes: FL
Installation:
• Use all specied fasteners. See Product Notes, page 18.
• Embed 4" into concrete tie beam or masonry bond beam.
• Designer may specify alternative nailing schedules.
• When using alternative nailing schedules, lower-most holes in strap
shall be lled progressing upward towards the top of the strap.
• Straps may be installed straight or wrapped over to
achieve table loads.
• Moisture barrier plate may be under bent during shipping causing
attached straps to be misaligned. Install straps vertically at 90°
from the horizontal top surface of the wall.
Ref. No.
Type
9
Masonry Concrete
1 Ply 2430
2 Ply 2770
1 Ply 2430
2 Ply 2770
1 Ply 2430
2 Ply 2770
1 Ply 2430
2 Ply 2770
1 Ply 2430
2 Ply 2770
1 Ply 2430
2 Ply 2770
1 Ply 2430
2 Ply 2770
1 Ply 2430
2 Ply 2770
1 Ply 2430
2 Ply 2770
1 Ply 2430
2 Ply 2770
1 Ply 2430
2 Ply 2770
1 Ply 2430
2 Ply 2770
1 Ply 2430
2 Ply 2770
1 Ply 2430
2 Ply 2770
1 Ply
2 Ply
1 Ply
2 Ply
1) Allowable loads have been increased 60% for wind or seismic loads; no further increase shall be permitted.
2) Allowable loads are based on anchorage to masonry/uncracked concrete.
3) DF lumber may be substituted for SP with no load reduction.
4) Minimum specified masonry or concrete compressive strength, f'm is 1,500 psi and f'c is 2,500 psi at 28 days respectively.
5) The five nail holes nearest the embedment line must be filled to achieve the lateral loads listed in the table.
6) Minimum quantity of fasteners to be installed. Product may have additional nail holes not needed to meet published allowable load of product.
7) Install (8) nails into each anchor for the DHTA installation.
8) Height (H) is the distance the anchor extends out of concrete or masonry.
9)
NAILS:
10d x 1-1/2 nails are 0.148" dia. x 1-1/2" long.
955
FL
2430 955 940 9552430
1215
1215
DHTA48-2 -- 1-1/4 43 8
DHTA48 -- 1-1/4 43 816
16
DHTA24-2 -- 1-1/4 20 8
DHTA24 -- 1-1/4 20 816
16
10d x 1-1/2 2430 1215 1310 1215 DHTA20-2 -- 16 1-1/4 16 8
10d x 1-1/2 2430 1215 1310 1215 DHTA20 DETAL20 16 1-1/4 16 8
10d x 1-1/2 2430 1215 1310 1215 DHTA16-2 -- 16 1-1/4 12 8
10d x 1-1/2 2430 1215 1310 1215 DHTA16 -- 16 1-1/4 12 8
10d x 1-1/2 2430 1215 1310 1215 DHTA12-2 -- 16 1-1/4 8 8
10d x 1-1/2 2430 1215 1310 1215 DHTA12 -- 16 1-1/4 8 8
10d x 1-1/2 2430 1085 1140 1085 DHTA24-18-2 -- 18 1-1/4 20 8
10d x 1-1/2 2430 1085 1140 1085 DHTA24-18 -- 18 1-1/4 20 8
10d x 1-1/2 2430 1085 1140 1085 DHTA20-18-2 -- 18 1-1/4 16 8
10d x 1-1/2 2430 1085 1140 1085 DHTA20-18 -- 18 1-1/4 16 8
10d x 1-1/2 2430 1085 1140 1085 DHTA16-18-2 -- 18 1-1/4 12 8
10d x 1-1/2 2430 1085 1140 1085 DHTA16-18 -- 18 1-1/4 12 8
Code
Ref.
MiTek USP
Stock No.
Steel
Gauge W
Min
Qty.
6
F1
160%
F2
160%
F3
160%
Dimension (in) Fastener Schedule
SP Allowable Loads (Lbs.)
1,2,3,4
H
8
(Out of
Concrete)
Per Anchor
No.
of
Plies
Uplift 160%
Lateral Loads
5
10d x 1-1/2
10d x 1-1/2
10d x 1-1/2
10d x 1-1/2
2430
2430
1215
1215
1310
1310
2430 2430 955 940
DHTA
Typical DHTA
1-Ply installation
DHTA 1-Ply plan view
(DHTA 2-Ply application similar)
W
H
1-1/2"
4"
Embed
F1
F3
Uplift
F2