DESIGN PROPERTIES FOREX LVL 2580Fb - 1.55E
Bending (3)
Fb = 2580
Modulus of elasticity apparent (4)
E = 1,55
Tension parallel to grain (5)
Ft = 1780
Longitudinal shear perpendicular to glue line –joist /beam(6)
Fv = 250
Longitudinal shear parallel to glue line - plank (6)
Fv = 165
Specific Gravity – Lateral, Nails in Face (8)
SG = 0,46
Compression perpendicular to grain- joist / beam
Fcp = 510
Specific Gravity – Lateral, Nails in Edge (8)
SG = 0,42
Compression perpendicular to grain - plank
Fcp = 260
Specific Gravity – Lateral, Bolts in Face (9)
SG = 0,40
Specific Gravity – Withdrawal, Nails in Face and in Edge (8)
SG = 0,44
Compression parallel to grain
Fc = 2375
NOTES
1.
Tabulated values are specified strengths for standard term duration of
load. Specified strengths shall be permitted to be adjusted for other load
durations as permitted by the code
2.
Tabulated values do not include the
3.
Tabulated bending specified strength (fb) for FOREX LVL 2580Fb- 1.55E
are based on a reference depth of 12 inches. For other depth, the tabulated
bending stress (fb) must be adjusted by a size factor Kzb
4.
5.
Tabulated tension parallel to grain specified strength (ft) is applicable to
lengths up to 20 feet.
For lengths greater than 20 feet, the tabulated tension to grain specified
strength (ft) must be adjusted by the length fator Kzt
resistance factor
Where :
Kzt = (20/L) 0.146
L = length of the member (ft)
Where :
Kzb= (12/d)1/8
6.
Tabulated longitudinal shear specified strengths (Fv) have a shear size
factor Kzv=1.0
The deflection of a simple span beam with a uniformly distributed load is
calculated as follows
7.
Applicable to all tabulated values except Specific Gravity (SG)
8.
Applicable for nailed connection
9.
Applicable for bolted connection
Δ= 270 WL4
Ebd3
Where :
D = total deflection (in)
W = applied uniform load (lb/ft)
L = design span (ft)
E = modulus of elasticity (psi)
b = member thickness (in)
d = member depth (in)
1 3/4''
7 1/4'' to 24''
FOREX LVL
(LAMINATED VENEER LUMBER)
Forex LVL 1.55E - 2580F b
1
DESIGNED TO PERFORM
FOREX laminated veneer lumber (LVL) is made from ultrasonically graded veneers assembled longitudinally
(all plys in the same direction) to yield maximum strength. Top grade veneers have few imperfections.
Scanners are used to identify defects from the lower quality veneers. A machine specially designed eliminates
the faulty parts and assembles the good material yeilding strong and uniform veneers. Veneer combinations
suited for the different grades are then assembled using waterproof adhesives under heat and pressure.
Forex LVL can be used as single ply or as assembled beams which are exceptionally strong, strait and solid.
Forex LVL is available in custom lengths and width further increasing its value to builders.
AVAILABLE GRADES
Forex LVL is available in 2 grades : 3100Fb – 2.0E, 2580Fb - 1.55E. It comes in a variety of depths and lengths
up to 60 feets . The standard natural finish accepts good quality structural adhesives. It can be built-up on
site or factory laminated which eliminate the need for nailing. The product also comes with a water resistant
coating to protect the LVL during construction and warehousing.
RELIABLE DESIGN
Forex LVL design values can be incorporated to in house or external softwares to speed up the design and
improve accuracy.
PRODUCT CERTIFICATION
Forex LVL is certified under – APA - program based on ASTM 5456 standard.
2
CONTENTS
HANDLING, STORAGE & USAGE GUIDELINES
4
FOREX LVL INSTALLATION DETAILS
4
MULTIPLE MEMBER CONNECTION
5
BEAM HOLE DETAILS
6
PRODUCT SPECIFICATIONS & DESIGN VALUES
7
PRODUCT IDENTIFICATION MARKINGS
7
NOTES FOR USE OF ALLOWABLE UNIFORM FLOOR AND ROOF LOADS TABLES
8
ALLOWABLE UNIFORM FLOOR LOADS (PLF) – 100% 1 - Ply 1 3/4 ”
9
ALLOWABLE UNIFORM FLOOR LOADS (PLF) – 100% 2 - Ply 3 1/2 ”
10
ALLOWABLE UNIFORM FLOOR LOADS (PLF) – 100% 3 - Ply 5 1/4 ”
11
ALLOWABLE UNIFORM FLOOR LOADS (PLF) – 100% 4 - Ply 7 ”
12
ALLOWABLE UNIFORM ROOF LOADS (PLF) – 115% (SNOW) 1 - Ply 1 3/4 ”
13
ALLOWABLE UNIFORM ROOF LOADS (PLF) – 115% (SNOW) 2 - Ply 3 1/2 ”
14
ALLOWABLE UNIFORM ROOF LOADS (PLF) – 115% (SNOW) 3 - Ply 5 1/4 ”
15
ALLOWABLE UNIFORM ROOF LOADS (PLF) – 115% (SNOW) 4 - Ply 7 ”
16
MINIMUM BEARING LENGTH REQUIREMENTS
17
WARRANTY
17
n Product must not be stored in contact with ground,
or have prolonged exposure to the weather. Protect
product from sun and water until ready to use.
Slippery when wet.
HANDLING, STORAGE &
USAGE GUIDELINES
n Keep FOREX LVL dry.
n Unload products carefully by lifting. Support the
bundles to reduce excessive bowing. Individual
products should be handled in a manner which
prevents physical damage during measuring, cutting,
erection, etc.
n Use forklifts and cranes carefully to avoid damaging
product. Use fabric slings when hoisting by crane.
n Call FOREX LVL sales for assistance when damaged
products are encountered.
n Keep stored in wrapped and strapped bundles, stacked
no more than 10’ high. Support and separate bundles
with 2 x 4 (or larger) stickers spaced no more than
8’ apart. Keep stickers out of mud and water. Align
stickers vertically.
FOREX LVL INSTALLATION DETAILS
Window / Door header
Window / Door header
Rim Board
Continious plate
Provide specified
or prescriptive
bearing length
Steel Column & Wood Column
Provide specified
bearing length
Provide specified
or prescriptive
bearing length
Framing is applied to
sides of the beam
Side Loaded Beam
Framing details such
as joists and sheathing
must be provided to
prevent beam from
twisting or rotating
at support
Side loads are not
recommended for
beams over 5-½” wide
unless equally applied
to both faces
4
MULTIPLE MEMBER CONNECTION
1.
Use 2 rows of nails for depths to 12”.
Use 3 rows of nails for depths greater than 12” up to 18”.
Use 4 rows of nails for depths greater than 18” up to 24”.
2.
16d box (3-½” x 0.135”) or common (3-½” x 0.162”) nails shall be used for 1-¾”plies.
16d sinkers (3-½” x 0.148”) may be used for 1-¾ plies provided the nails are driven alternating
from each face (see note 3).
3.
For detail A or when attaching the first two plies for details B and C (optional), the nails may be driven all from one face or
alternating from both faces. If the nails do not fully penetrate the second ply, then the nails shall be driven from both faces.
4.
When driving nails from each face, alternate every other nail in each row.
DETAIL A
DETAIL B
Maximum 2-PLY
Maximum 3-PLY beams
Top Loaded Beam – Nail Connection
Minimum nail sizes:
1-¾” & 2” plies16d box (3.5” x 0.135”)
1½ plies –
10d box (3” x 0.128”)
12” OC
Two rows for depths up to 12”
Three rows for depths up to 18”
Framing is applied to top of the beam
so that each ply carries an equal load
5.
For details C and D, it is permissible to nail the plies together before bolting or driving Simpson® SDS
or SDW (or equal) screws. Nail two plies together then nail one additional ply to each side.
6.
Beams wider than 5-½” shall be top-loaded or side-loaded from both sides to prevent rotation.
Consult a professional engineer for other options.
DETAIL C
DETAIL D
Maximum 4-PLY beams
Maximum 4-PLY beams
Top Loaded Beam – Bolted connection
Framing is applied to top of the beam
so that each ply carries an equal load
Nails are permissible but NOT required.
See notes for Connection Assemblies.
3”
½” – diameter
2’-0”
ASTM grade A-307
(or better) bolts.
Use washers on both faces.
7.
Other nail, screw or bolt configurations are possible. Consult a professional engineer.
5
BEAM HOLE DETAILS
NOTES
1.
THE Allowed Hole Zone in this chart is suitable for Uniformly loaded beams using maximum loads for any tables listed.
For other load conditions or hole configurations, please contact FOREX LVL.
2.
If more than one hole is to be cut in the beam, the length of the uncut beam between holes must be a minimum of twice the diameter of the largest hole.
3.
Rectangular holes are not allowed.
4.
Holes in cantilevers require additional analysis.
Beam Depths
5-½”
7-¼”
9-¼”
11-¼”
11-⅞”
14”
16”
18”
20”
22”
24”
Maximum Hole diameter
1-⅛”
1-½”
2”
2”
2”
2”
2”
2”
2”
2”
2”
6
PRODUCT SPECIFICATIONS & DESIGN VALUES
FOREX LVL 2580Fb- 1.55E 1-¾” – ALLOWABLE DESIGN PROPERTIES
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NOTES
1.
The design properties table has been developed using the provisions of National Design Specification® for Wood Construction 2015 Edition and the allowable
stress design properties provided in APA Product Report® PR-L318.
2.
The design properties are applicable to loading in a beam orientation with lateral support at bearing points and continuous lateral support along the compression
edge of the beam.
3.
Design properties are based on dry service conditions only.
4.
All single ply beams are limited to a depth of 14’’ maximum. Plies that are 16’’ or deeper must be used in multiple-ply applications.
5.
The design properties table does not include the repetitive load factor (Cr=1.04) for beams with two plies or more.
6.
The design properties table does not include the effect of allowable holes.
7.
Stiffness values (EI) are based on the apparent modulus of elasticity (E=1.55x106 psi) and the effect of shear deformation has been included.
PRODUCT IDENTIFICATION MARKINGS
7
Notes for Use of Allowable Uniform Floor and Roof Loads Tables
1.
The load tables have been developed using the provisions of National Design Specification® for Wood Construction 2015 Edition
and the allowable stress design properties provided in APA Product Report® PR-L318.
2.
The load tables are not intended to substitute the provision of services by a structural engineer according to local project
requirements. For any beam configurations that do not correspond to the assumptions of this table, the services of a structural
engineer may be required.
3.
The load tables are based on the maximum uniform load for floor (100% duration) or roof (115% duration) applications in residential
buildings, using the most restrictive of either simple spans or continuous spans of equal length. The span length is measured
from the centre of the supports. The loads shown in the tables may be added to the self-weight of the beam.
4.
Forex 1.55E LVL must only be used in dry service conditions where the moisture content of the LVL will be maintained at 16% or less.
5.
LVL beams require lateral support at beam bearing points and continuous lateral support of the compression edge of the beam.
6.
All single ply beams are limited to a depth of 14’’ maximum. Plies that are 16’’ or deeper must be used in multiple-ply applications.
7.
Deflection limits must be verified with local building code and project requirements. The deflection limits used in the tables for
floors (100% duration) are L/360 for live load and L/240 for total load. The deflection limits used in the tables for roofs
(115% duration) are L/240 for live load and L/180 for total load.
8.
To use the tables, the user must check that both the live load and the total load values listed are not exceeded for a given span.
Where the symbol “ * ” is shown for the allowable live load , the total load governs the design, unless the user has chosen a more
stringent limit for the live load deflection (see notes 9 and 10).
9.
To apply live load deflection limits of L/480 or L/600 for floor applications (100% duration), multiply the allowable load in the
Live Load L/360 row by 0.75 or 0.5 respectively.
10. To apply live load deflection limits of L/360 or L/480 for roof applications (115% duration), multiply the allowable load in the Live
Load L/240 row by 0.67 or 0.5 respectively.
11.
If the actual span of the beam falls in between two span lengths in the SPAN column, use the allowable loads given for the greater
span length.
12. The load tables include the repetitive load factor (Cr=1.04) for beams with two plies or more.
13. The load tables include the effect of allowable holes in the middle 1/3 of the depth and the middle 1/3 of the span, all according
to the guidelines provided in this product manual.
14. The bearing conditions in the load table assume bearing across the full width of the beam, and a bearing material that has a
bearing strength equivalent or greater than Forex 1.55E LVL (510 psi). The load tables include an assumed maximum available
bearing length of 4 ½’’ at the exterior supports of the beam.
15. For applications where the total load does not exceed the value given in the table, the length of bearing values may be reduced
proportionately.
8
ALLOWABLE UNIFORM FLOOR LOADS (PLF) – 100%
(Can be applied to the beam in addition to its own weight.)
Notes
1.
Deflection limits must be verified with local building code and project requirements. The deflection limits used in the tables for floors (100% duration) are L/360
for live load and L/240 for total load. The deflection limits used in the tables for roofs (115% duration) are L/240 for live load and L/180 for total load.
2.
The bearing conditions in the load table assume bearing across the full width of the beam, and a bearing material that has a bearing strength equivalent or
greater than Forex 1.55E LVL (510 psi). The load tables include an assumed maximum available bearing length of 4 ½’’ at the exterior supports of the beam.
9
ALLOWABLE UNIFORM FLOOR LOADS (PLF) – 100%
(Can be applied to the beam in addition to its own weight.)
Notes
1.
Deflection limits must be verified with local building code and project requirements. The deflection limits used in the tables for floors (100% duration) are L/360
for live load and L/240 for total load. The deflection limits used in the tables for roofs (115% duration) are L/240 for live load and L/180 for total load.
2.
The bearing conditions in the load table assume bearing across the full width of the beam, and a bearing material that has a bearing strength equivalent or
greater than Forex 1.55E LVL (510 psi). The load tables include an assumed maximum available bearing length of 4 ½’’ at the exterior supports of the beam.
10
ALLOWABLE UNIFORM FLOOR LOADS (PLF) – 100%
(Can be applied to the beam in addition to its own weight.)
Notes
1.
Deflection limits must be verified with local building code and project requirements. The deflection limits used in the tables for floors (100% duration) are L/360
for live load and L/240 for total load. The deflection limits used in the tables for roofs (115% duration) are L/240 for live load and L/180 for total load.
2.
The bearing conditions in the load table assume bearing across the full width of the beam, and a bearing material that has a bearing strength equivalent or
greater than Forex 1.55E LVL (510 psi). The load tables include an assumed maximum available bearing length of 4 ½’’ at the exterior supports of the beam.
11
ALLOWABLE UNIFORM FLOOR LOADS (PLF) – 100%
(Can be applied to the beam in addition to its own weight.)
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for live load and L/240 for total load. The deflection limits used in the tables for roofs (115% duration) are L/240 for live load and L/180 for total load.
2.
The bearing conditions in the load table assume bearing across the full width of the beam, and a bearing material that has a bearing strength equivalent or
greater than Forex 1.55E LVL (510 psi). The load tables include an assumed maximum available bearing length of 4 ½’’ at the exterior supports of the beam.
12
ALLOWABLE UNIFORM ROOF LOADS (PLF) – 115% (SNOW)
(Can be applied to the beam in addition to its own weight.)
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Notes
1.
Deflection limits must be verified with local building code and project requirements. The deflection limits used in the tables for floors (100% duration) are L/360
for live load and L/240 for total load. The deflection limits used in the tables for roofs (115% duration) are L/240 for live load and L/180 for total load.
2.
The bearing conditions in the load table assume bearing across the full width of the beam, and a bearing material that has a bearing strength equivalent or
greater than Forex 1.55E LVL (510 psi). The load tables include an assumed maximum available bearing length of 4 ½’’ at the exterior supports of the beam.
13
ALLOWABLE UNIFORM ROOF LOADS (PLF) – 115% (SNOW)
(Can be applied to the beam in addition to its own weight.)
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Notes
1.
Deflection limits must be verified with local building code and project requirements. The deflection limits used in the tables for floors (100% duration) are L/360
for live load and L/240 for total load. The deflection limits used in the tables for roofs (115% duration) are L/240 for live load and L/180 for total load.
2.
The bearing conditions in the load table assume bearing across the full width of the beam, and a bearing material that has a bearing strength equivalent or
greater than Forex 1.55E LVL (510 psi). The load tables include an assumed maximum available bearing length of 4 ½’’ at the exterior supports of the beam.
14
ALLOWABLE UNIFORM ROOF LOADS (PLF) – 115% (SNOW)
(Can be applied to the beam in addition to its own weight.)
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Notes
1.
Deflection limits must be verified with local building code and project requirements. The deflection limits used in the tables for floors (100% duration) are L/360
for live load and L/240 for total load. The deflection limits used in the tables for roofs (115% duration) are L/240 for live load and L/180 for total load.
2.
The bearing conditions in the load table assume bearing across the full width of the beam, and a bearing material that has a bearing strength equivalent or
greater than Forex 1.55E LVL (510 psi). The load tables include an assumed maximum available bearing length of 4 ½’’ at the exterior supports of the beam.
15
ALLOWABLE UNIFORM ROOF LOADS (PLF) – 115% (SNOW)
(Can be applied to the beam in addition to its own weight.)
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Notes
1.
Deflection limits must be verified with local building code and project requirements. The deflection limits used in the tables for floors (100% duration) are L/360
for live load and L/240 for total load. The deflection limits used in the tables for roofs (115% duration) are L/240 for live load and L/180 for total load.
2.
The bearing conditions in the load table assume bearing across the full width of the beam, and a bearing material that has a bearing strength equivalent or
greater than Forex 1.55E LVL (510 psi). The load tables include an assumed maximum available bearing length of 4 ½’’ at the exterior supports of the beam.
16
1
MINIMUM BEARING LENGTH REQUIREMENTS
FOREX LVL 2580Fb - 1.55E 1-¾”
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NOTES
1.
The minimum bearing length table has been developed using the provisions of
National Design Specification® for Wood Construction 2015 Edition and the allowable stress
design properties provided in APA Product Report® PR-L318.
2.
Minimum required bearing length is 1 ½” at beam end supports and 3 ½” at interior supports.
3.
Bearing across the full width of the beam is required.
4.
Bearing lengths are based on an allowable bearing stress perpendicular to grain of 510 psi for
Forex 1.55E LVL. The structural adequacy of the support material or member must also be
verified by the user.
5.
Bearing lengths are based on dry service conditions only.
6.
No decrease in bearing length is permitted for duration of load.
LIFETIME LIMITED WARRANTY
FOREX LVL warrants its LVL products to comply
with our specifications, to be free from defects in
material and workmanship, and to meet or
exceed our performance specifications for the
normal and expected life of the structure when
correctly stored, installed and used according to
our Installation Guide.
17