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Anchors & Fastener Systems
Boise, ID 208-377-0158
Eugene, OR 541-342-3641
Idaho Falls, ID 208-522-7082
Medford, OR 541-779-0187
601
SIMPSON STRONG-TIE®
BP Bearing Plates
•
Bearing Plates give greater bearing
surface than standard cut washers,
and help distribute the load at
these critical connections
•
The BP 1/2 - 3 and BP 5/8 x 3 are
3” x 3” bearing plates that meet the
latest requirements of the IRC and
IBC; these plate washers are
available un-coated or with a HDG
coating
•
The BP5/8SKT uses SDS 1/4” x
1-1/2” screws to provide lateral resistance when 5/8” diameter sill
holes are over-drilled (screws are provided)
•
The shear capacity of the connection and the sill/anchor bolt shall
be determined by the Designer for each installation
•
Finish: BP5/8S - Galvanized; BP 7/8 - 2 - Zinc Plated; BP - None.
BP’s may be ordered in HDG
SIMPSON STRONG-TIE®
HDU Holdowns
•
HDU Holdowns are pre-deflected during
the manufacturing process, virtually
eliminating deflecton under load due to
material stretch
•
They use Simpson Strong-Tie®
Strong-Drive® SDS screws which install
easily and provide reduced fastener slip
•
Using SDS screws results in a greater net
section, when compared to bolts, as no
material is removed
•
The HDU series of holdowns are designed
to replace previous versions of the product such as PHD’S as well
as bolted holdowns. The HDU2, 4 and 5 are direct replacements
for the PHD2, 5 and 6, respectively
HDU Special Features:
•
Pre- deflected body virtually eliminates deflection due to material
stretch
•
Uses SDS screws which install easily, reduce fastener slip, and
provide a greater net section area of the post compared to bolts
•
SDS screws are supplied with the holdowns to ensure proper
fasteners are used
•
No stud bolts to countersink at openings
•
Finish: HDU-Galvanized
SIMPSON STRONG-TIE®
LTT/HTT Tension Ties
•
Tension ties offer a solution for resisting
tension loads that is fastened by nails
•
The entire line of tension ties has been tested
and evaluated to the requirements of AC155
•
The HTT4 and HTT5 are the latest
generation of tension ties. They feature an
optimized nailing pattern which results in bet-
ter
performance with less deflection
•
Designed to meet new code standards, the
HTT4 and HTT5 offer higher loads than their
predecessors
•
The LTTI31 is designed for wood chord open web truss attach-
ments to concrete or masonry walls and may also be installed ver-
tically on a minimum 2x6 stud
•
Finish: Galvanized. May be ordered in HDG; contact Simpson
Strong-Tie
SIMPSON STRONG-TIE®
HD Holdowns
Tension Tie
Holdowns are used to transfer tension loads
between floors, to tie purlins to masonry or
concrete, etc. Use HDAs and HDs for
overturning requirements and other
applications to transfer tension loads. All HDAs
are self-jigging, ensuring code-required
minimum 7 bolt diameter spacing from the end
of the wood member to the center of the first
bolt hole.
HDA Special Features:
•
Single piece non-welded design results in higher capacity
•
Load transfer plate eliminates the need for a seat washer
•
Fewer inspection problems
Finish: Galvanized except HD14A - Simpson gray paint.
1. Allowable loads have been increased 33% for earthquake or wind
loading with no further increase allowed; reduce where other loads
govern.
2. Minimum post size is required to ensure the load carrying capacity
of the critical net section meets the holdown capacity.
3. Minimum post size is required to ensure the load carrying capacity
of the critical net section meets the holdown capacity.
4. HB is the required minimum distance from the end of the stud to
the center of the first stud bolt hole. End distance may be increased
as necessary for installation.
4. The designer must specify anchor bolt type, length and embed-
ment.
5. Lag bolts will not develop the listed loads.
6. Holdowns installed raised off the mudsill have larger deflection
values. Consult Simpson for info.
7. Deflection at highest allowable design load: The deflection of a
holdown measured between the anchor bolt and the strap portion of
the holdown when loaded to the highest allowable load listed. This
movement is strictly due to the holdown deformation under a static
load test conducted on a steel jig.
8. For Hem Fir values request T-HEMFIR.
SIMPSON STRONG-TIE®
STHD Strap-Tie Holdowns
The STHD is an embedded strap tie holdown with
high load capacity and a staggered nail pattern to
help minimize splitting.
•
The strap nailing pattern allows for nailing to the
edges of double 2x’s
•
A slot below the embedment line allows for
increased front to back concrete bond and reduced
spalling
•
Strap nail slots are countersunk to provide a lower
nail head profile
•
Rim joist models accommodate up to a 17" clear
span without any loss of strap nailing
•
Coined edges enhance safe handling
Material: 12 ga.
Finish: Galvanized.
Codes: ICBO 5349.
1.’RJ’ after the model indicates STHDs for rim joist applications
2. STHD14RJ requires 30-16d sinkers, with the (le) load at 133% of
4960 lbs.
3. 10d commons or 12d common nails may be used with no load
reduction.
4. For two pour with 4" slab or less. The STHD14 load at 1/2" edge
2000 psi is 3235. The STHD10 at the same condition is 2035.
5. Allowable loads have been increased 33% and 60% for
earthquake or wind loading with no further increase allowed; reduce
for other load durations according to the code.
6. For Hem-Fir values, request T-Hemfir.
7. Strap may be bent one full cycle.
Min Stem Wall: 8
