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HomeMy WebLinkAboutLock-Deck Laminated DeckingPotlktch
LOCK- DECIC LAMINATED
DEC COU Ty BUILDING DIVISION
FOR C IPLIANCE�
REV ✓L� �L
REVIEWED BY `.
DATE
JOB
PLANS AND PERNMIT . IU E KEPT ON
ORNO INSPECTION W'LL BE MADE'
Residence —Inland Red Cedar Designer: Deck House Inc., Acton, MA
0
Lock -Deck Technical Data.
?iOP EFiT1E 'OAF A'Y1FOO7hSECTtIONLOC-DECK
t Cross Sectional Properties I
k
�Nomina,A'c�ual
� 7H1160ess
i
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29 3Ei
y Species
rI`,.�"fC31'�.�-i@'f
,Modulus of s
!
Eldreme F1ber ,
Shear.Paiailel
h tt fv
Elasticity s '
m Bending (f) :
: � to the'Graait" r �=
F�,loor;"r��'�
psi
tps
prp�ln�and Red Ceb�r
_,t•� 1 200f000= r
E 1590 1380,
- t §150 � t y'4"
Ponderosa Pinery
,�1 300000 t
�590 n 1380
150 r-
5,,
1(I�Fia Pine
500j00b18�01
b 1610
150
i(CI8h0a
v Wiand Whrte Ftr
r1
'' 1 600'000
185� 1ti10 ,t
+ i t
130 r
tDouglasFlr/Larch
1800`000
2640 Fi2300
165
t,
PoESoutherri,Pme
a1,
1+800000
2640xa" 2300
, a
200 t
r tl
�
it$oc�a of Asa PA6,
Pal,
"For structural design only. Do not use as shipping weights.
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Species 1
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°185
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Footnotes:
1. R = Total thermal resistance of the assembly without roofing.
2. Assumes thermal conductivity (k) of 0.15. Some insulations have superior values.
Check with manufacturer.
3. Some codes allow up to 20% increase in R values of insulation which is continuous.
Check local codes for adjustment factors.
Footnotes for Span Tables:
1. Values followed by (f) are governed by stress. Allowable loads for floors when governed,
by deflection are half of those listed in the 1 /180 column.
2. Bending stress relates to 2-month duration. It is not exceeded when the listed loads
are applied based on recognized decking formulas.
3. In jurisdictions using ICSO, refer to ICSO Research Committee Report No. 1379 for
Western Species.
a.. ,�.,_. r.w .. v..ud.c -, _..•e�....,...x x::...x.d...:os::saz ......,�-:ro:::d.ea
EXAMPLE IN COMPUTING PITCHED ROOF
REQUIREMENTS
Given: 40 psf live load on horizontal projections of the roof
11 psf dead load including weight of deck
15 foot design span
1/24o allowable deflection
8 in 12 design pitch of roof
Random Length construction layup of decking
Load adjustments for roof pitch
Step 1—Enter graph with 40 psf live load. Read 33 psf load
on roof surface
Step 2—Add the 33 psf live load to applicable dead load per
square foot of roof surface (11 psf in this case)
33 + 11 = 44 psf.
Step 3—Enter graph with 44 psf total load. Read 36 psf
load component causing bending
With this load a 4" E1.5 decking will meet the required
specifications (check span tables).
4. Span/loads shown assume compliance to layup rules described elsewhere. Longer spans may require specific lengths differing
from the standard shipment —consult your Potlatch representative.
5. Custom Grade 3" and 5" Southern Pine deflection values are 83% of the E1.8 values shown. 4" Southern Pine values are equal
to E7.5 Idaho White Pine values except when bending governs.
6. Nominal 5" Fir/Larch will have a MOE of 1.7 x 106 psi unless special arrangements are made prior to manufacture.
06182/POT
BuyLine 5112
'HPMA—Hardwood Plywood Manufacturers
Association UL—Underwriters' Laboratory.
**Based on Hemlock, a similar species.
5
Specifications. Sizes and Patterns.
Decking shall be Potlatch LOCK -DECK? SIZES PATTERNS
SPECIES shall be (designate one) Idaho White Pine, Inland `, 'y OMINAL•a°
'Red Cedar, Southern Pine, White Fir, Ponderosa Pine or I, F
i Douglas Fir/Larch. //�
SIZE shall be: Thickness (designate one) —nominal 3
N J
(23/s" actual) —nominal 4" (27/8" or 3" actual) —nominal 5"
(321/32" actual). Width shall be —nominal 6" (5'/4" actual)—
nominal 8" (7" actual). Lengths shall be random 6' to 16'
shipped in multiples of 1' and 1" short of nominal. Lengths __
17'-36' available on inquiry. �MINAL4" `�
PATTERN should be (designate one standard vee—
}
grooved —striated —channel groove—buIInose. Decking `
shall be tongue and grooved and end -matched.-- ��r717
N
FACTORY FINISH. Laminated decking shall be factory stained in Potlatch acrylic (specify color).
LAMINATED ADHESIVE shall meet requirements of
MIL-A-397B, MIL-A-5534A or ASTM D 2559-66T. 100%
�l
exterior waterproof type. Moisture content shall not exceed NOMINAL s'
14% maximum at the time of manufacture as measured
throughout the piece. All,pieces shall be certified by an Y ry
independent inspection agency (TECO or SPIB). Decking W;
shall have heavy tongue and groove ends and edges, pre-
cision manufactured.
Application of 5230 Adhesive is a simple and effective way to
use Lock -Deck laminated decking to its fullest structural potential.
FINISHES
DIAPHRAGM CONSTRUCTION. Used in combination
with 3M's 5230 elastomeric adhesive, LOCK -DECK can be
engineered to carry diaphragm shear. This system com-
bines the proven structural strength of LOCK -DECK deck-
ing with the strong durable characteristics of this adhesive.
Results in a strong, adequately rigid, yet flexible, glue joint
which absorbs much of the shock wave energy from dynamic
loads such as wind, earthquake and other severe stresses.
For a copy of the LOCK -DECK Diaphragm Construction bro-
chure, contact the Potlatch office shown on the back of this
brochure.
(1)Western species (2) Southern Yellow Pine
'Not available In Southern Pine
06182/POT
Construction and Installation.
Lock -Deck laminated decking can be easily handled and installed on most construction projects.
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'""`*'
RANDOM LENGTH CONTINUOUS: Random Length
Continuous, or RLC, is the most common method of apply-
ing LOCK -DECK decking. It allows the use of mixed lengths
of material on a variety of span conditions, providing high
structural efficiency and attractive appearance.
The allowable RLC roof loads recommended in the
span table are based on actual full-scale tests, where
the decking was laid in conformance with certain rules.
Equivalent performance will be obtained by following
these rules:
1. The deck must be continuous over three or more spans of approximately equal
length, with each piece of deck over at least one support. Other situations require
special design.
2. Decking shall be laid to disperse end -joints as randomly as possible, so that:
a) The distance between end -joints in adjacent rows of decking is at least two feet.
b) The distance between end -joints in rows of decking separated by only one row
is at least one foot.
3. End spans shall be carefully planned and laid. To ensure that end spans perform
as indicated by the span tables, follow one of these practices:
a) Eliminate end -joints in one-third of the courses of decking, or
b) Provide a cantilevered overhang, free of end -joints, equal to 20% of the end
span, or
c) Shorten the end span by 10%.
Where one of these practices cannot be applied, end span deflection may exceed
the values shown. Construction practice has accepted this in many instances.
4. Decking should be end -matched and toenailed within one foot of all ends (see
Attachment Procedures, this page).
BuyLine 5112
ATTACHMENT PROCEDURES.
Toenailed spaced 30' along each course
offset 15'in adjoining courses
kl- Beam
Tongue and
groove joint
Decking
Toenailed
30' Apart
Two nails per course
into support `+ End joint nails
within 12' max.
each side
Application should be made by nailing each course to a
supporting member with two nails. Each course should be
toenailed to the tongue side of the adjacent course at an
angle of approximately 45° starting within 1 foot of the end
of each piece. Toenail at 30" centers staggering locations
in adjacent locations (see diagram). Use nails of the size
listed in the following chart:
NAILING SCHEDULE.
Toenailing along Courses: Face Nailing to Supports:
311
8d@30"o.c. for 3" nominal 20d for 3" nornjn�
16d@30"o.c. for 4" nominal 30d or 4' nomina
16d@30"o.c. for 5" nominal 50d for 5" nominal
TYPICAL POST AND BEAM CONSTRUCTION
Laminated post
7