Plans (211) il
OFFICE COPY
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LIABILITY
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a
The City of Tigard and its
employees shall not be
responsible for discrepancies
' -. c ~" which may appear herein.
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CITY OF TIGARD ` KC\
REVIEWED FOR CODE COMPLIANCE
Approved: i ]
OTC: [ J q
Permit##: I(`(�`J1 i 1 — DD 2
Address: CODS PISuite tt: a • +
. ): Date: 151(I
Approved plans
• shall be on lob site. 'L _ ikat
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VALIDITY OF PERMIT
THE ISSUANCE OFA PERMIT Q
BASED ON CONSTRUCTION
DOCUMENTS AND OTHER ,
• DATA SHALL NOT PREVENT - _
THE CODE OFFICIAL FROM
REQUIRING THE CORRECTION
OF ERRORS.ORSC 105.4
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THE (5T:kcie Ate 6,9F-A/6 7& A ' 17./ to'61-
1A.„1/ 16 ibtfrif AN6 (1& idy K. HI 6# 7',
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16" Max.
Detail A
/HD2AHDG
•
/ `
, parallel layout
x
il /..1,_-4x4 (min) guardrail post
-N. j i
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> 2x8 (min) I
7 2blocking �,
------- `
2x8 (min)
deck joists
7 le ,/,;Y -,-.,
'
Detail BB ''''
HD2AHDG
perpendicular
layout
7,,Pf II\beam -
below
2x8 (min)
Rim joist
AFigure 30:Guardrail attachment option 5 plan view
(2) HD2AHDG or equal
holdown one this side,
4X4 post, min. (typ) one opposite side of blocking
Decking
HD2AHDG Decking (typ) (typ)
holddown
or equal 4X4 post, ,
gf ...%///AlaMN r A min. (typ) !■•1•�
l�r _-;1�T- ._21/2"
-_- p7ii�t
2X8 min.
blocking
5/8"dia. galvanized machine 5/8"dia. galvanized machine
bolts or all thread rods with bolts or all thread rods with
DETAIL A nuts and washers. DETAIL B nuts and washers. •
AFig. 31:Guardrail attachment option 5 parallel layout A Fig. 32:Guardrail attachment option 5
perpendicular layout
•
DECK DESIGN GUIDE • 17
Allowable Loads ,
I
fie' 6-SD#9x1'/z' 840 840 840 755 '
DTT1Z 3/' or i 6-10dx1'W I 910 6404 795 6404 ��frif*
• 11
SDWHS
•
810dx1�/z° 910 850 910 850 -:*:' Tia .�3'i;
•
•
DTT2ZNTT2SS 73/�e" '/z" j 8-SDS'/a"x1%i 1825 1800 1825 1615 � _�- -:
1.Allowable loads have been increased 60%for short-term loading with no further increase allowed. ,
2.Dry values are applicable to installations into wood with a moisture content that does not exceed 19°'0. .;; I
3.Wet values are applicable to installations into wood with a moisture content greater than 19%at timer;'' •
of installation or in service.Values include an NDS wet service factor for the fasteners. ,4 s16'
4.DTT1Z installations with allowable loads below 750 lbs.do not satisfy the 2015 IRC requirements for rY- i- . j' • -
deck-to-house lateral load connections.
5.DTT1Z installed with the Strong-Drive SDWH Timber-Hex HOG screw with a min.of 3"thread 4g;
penetration achieves the lesser of the table load or 855 lbs.SDWH installed with 3°of thread
penetration into dry lumber has an allowable withdrawal load(160)of 1380 lbs.into SP,1225 lbs.into DF \ 7 6, 6.
1020 lbs.into SPF/HF.
6.Load values are valid if the product is flush with the end of the framing member or installed away DTT1Z
from the end.
7.FASTENERS:SD#9x11/2(model SD9112)=0.131'dia.x 1W,10dx11/2=0.148'dia.x 1 h'long. S.
4.
DTT2Z
• Conditions Not Shown in the INC
The IRC details describe particular methods that are appoved and do not represent all common framing conditions.When
these are encountered,alternate methods of construction may need to be approved by the building official to ensure they
satisfy the intent of the code and are at least equivalent to the prescribed method.Several alternate construction methods
are shown here.
DTT1Z DTT1Z—750-Pound Assembly
Condition 1—Holdown Cannot Be Installed Flush &71
with Wall Sheathing
'. Unlike some holdowns,the DTT1Z seat is not i
kms:
required to bear on sheathing or framing and can be
installed away from the wall to account for non- E
structural siding,joist hanger interference or other
conditions.Longer screw anchors may be required
to ensure a minimum of 3"thread penetration by a
fully threaded lag screw or Strong-Drives SDWH o
Timber Hex HDG screw into the wall framing.
E
�.--, 1 \ DTT1Z
Do not aver drive Condition 2—Top of Wall Plate Does Not Align o
anchoring screw with Bottom of Deck Joist
The 2015 IRC detail shows a holdown installed on
Predrill 3/,e'dia.hole for fully threaded the bottom of the joist.However,the DTT1Z was
— I lag screw.Predrilling not required with •
tested and developed using 1'/z°fasteners into
Strong-DriveeSDWN Timber-Hex HDG Screw.
either the narrow edge or wide face of a 2x member,
(Siding not shown for clarity) allowing the DTT1Z to be installed at any location
along the depth of the joist.
Figure 4
2018 I2015 IRC Lateral LoadDetail
Sheathing
Siding
` Decking
Deck joists
Approved joist hangers
2" min. 11 --- ir -11111111111111
Pressure treated 2x ledger
iflii,414111
with fasteners per IRC Table
Floor joists00 Hold-do n v mire 75 capacity
DTT!2 at 4 locations, evenly distributed
along deck & 1 win 2' of each
end of the leder. Hold-down devices
shall fully engage deck joist per
hold-down manufacturer.
Nate: This detail is applicable A fully threaded "
diameterwhjoin ae parallel
lag
to deck joist. screw predrilied wimin 3" penetration
to center„+ top plate, studs, or header.
s