Boise Glulam Product Guide

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BOISE GLULAM®

Beam Product Guide

WEBGLPROD

05/2013

Boise Cascade EWP • BOISE GLULAM® Product Guide • 005/23/2013

. . . Just ask for BOISE GLULAM® beams

Dimensional Tolerances, Exposed Apps for Glulam, Fire Resistance .. 6

BOISE GLULAM® Design Values............................... 7

BOISE GLULAM® Allowable Design Stresses .................... 7

Column Tables & Allowable Stresses ........................... 8

Allowable Holes ............................................ 9

Common Details .......................................... 10

BOISE GLULAM® Beams Substitution Tables - Solid Sawn ......... 11

Website.......................................... Back Cover

Stock Beams, Custom Beams .................................2

I-Joist Compatible Beams .................................... 2

BOISE GLULAM® Building Code Evaluations ..................... 2

Architectural Appearance Beams, Industrial Appearance Beams ...... 3

Columns, Headers, Apparent & True Modulus of Elasticity ........... 3

Balanced and Unbalanced Beam Layups, Layup Combinations....... 3

Deflection & Camber ....................................... 4

Adhesives, Checking, Handling & Storage, Field Notching & Drilling ... 5

Glued laminated timbers from

Boise Cascade Engineered Wood Products

add functional beauty to any residential or

commercial project.

Just ask for BOISE GLULAM® beams.

No discussion of engineered wood products is complete without

mention of glued laminated timber. Glulams are sometimes forgotten

in what has become an increasingly crowded field of newer products.

Laminated timbers are often the most cost-effective and easy-to-

install alternative for beam applications to residential, commercial

and light industrial construction. It is usually easy to determine

whether to specify a balanced or unbalanced layup and whether to

choose Industrial or Architectural appearance grade beams.

The benefit to BOISE GLULAM® beams is that they can be manu-

factured either with or without camber. Most stock beams are

available with either a small amount of camber (5000' radius) or no

camber, depending on market demands.

BOISE GLULAM® beams are manufactured primarily from Douglas Fir-

Larch and other softwood species and carry the APA trademark.

STOCK BEAMS

For most residential applications, stock beams are the product of

choice. BOISE GLULAM® stock beams are available through our

trusted distributors, located strategically throughout the country. Our

beams are manufactured in widths of 3⅛", 3½", 5⅛", 5½", 6¾", and 8¾",

with depths ranging from 6" to 24" and lengths up to 66 feet, with or

without camber. Stock beams are available in Architectural appearance

grade except 3½" and 5½" which are Framing header grade only.

Architectural Appearance is intended for exposed applications but can

also be used for concealed beams, headers, columns, and rafters.

Check with your local distributor for availability.

Rough Sawn Glulam

Just one of our custom beams

CUSTOM BEAMS

Custom beams are used when

large cross-sections, longer lengths,

curved and arched shapes, different

appearances, or specific certifications

are required.

BOISE GLULAM® custom beams

are manu factured on a made-to-

order basis. Please call to determine

availability of BOISE GLULAM®

custom beams. See pages 45-47 in

our Western Commercial Guide for

additional information.

Custom widths: 3⅛", 3½", 5⅛",

5½", 6¾", 8¾", 10¾", 12¼", 14¼"

Depths ranging from 6" to 57½"

(depending upon the width)

IJC (I-JOIST COMPATIBLE) BEAMS

IJC (I-Joist Compatible) sizes are readily available. Consult your local distributor for availability. IJC sizes

have proven to be cost-effective product options to other structural members such as LVL.

BOISE GLULAM® MANUFACTURING STANDARDS

APA Mill Number: 1107 APA EWS Trademarked Glulam Under These Standards:

– ANSI A190.1-2012 – CSA O122-06 and CSA O177-06

Table of Contents

Boise Cascade EWP • BOISE GLULAM® Product Guide • 05/23/2013

BOISE GLULAM® Stock Beam and Column Sizes

LAYUP COMBINATIONS

Balanced Vs Unbalanced Layup Example

ARCHITECTURAL APPEARANCE BEAMS

These beams are the beams of choice in applications where members

are exposed to view, because they have a smooth, attractive finish.

Stock beams are often supplied with this appearance so they may be

exposed to view in the finished structure. Voids greater than ¾" are filled,

three sides (excluding the top) are planed or sanded, and edges are

eased on the bottom face of the member.

INDUSTRIAL APPEARANCE BEAMS

These beams are used in concealed applications or in other places

where appearance is not of primary importance, such as such as

commercial buildings, warehouses, and garages. Voids are not filled,

and only the two wide surfaces are planed.

HEADER BEAMS – FRAMING GRADE

BOISE GLULAM® headers are commonly used for concealed

applications such as doors and windows where appearance is not of

importance. They come in two common widths, 3½" and 5½". Check

with your local distributor for availability.

COLUMNS

Glulam columns are straight and dimensionally true, making framing an

easy task. Because columns are available in long lengths, the members

do not have to be spliced together, as is often necessary with sawn

lumber. The columns can be exposed to view as a unique architectural

feature of the framing system.

BOISE GLULAM® columns have all four edges eased to match

the widths of the Architectural glulams beams and have the same

architectural appearance. All sides may be exposed to view.

Header (Framing) Beams

Architectural and Industrial Appearance Beams Columns

T.L.

No. 1

No. 2

T.L.

No. 2D

No. 2

No. 1

No. 2

T.L.

Balanced

(V8)

Unbalanced

(V4)

No. 3 No. 3

Architectural and Industrial Appearance Beams Header (Framing) Beams Columns

3⅛"

5⅛" 6¾"

24"

3⅛" to 8¾"

3½"

24"

5½"

24"

7½"

24"

8¾"

24"

BOISE GLULAM® Stock Beams

APPARENT & TRUE MODULUS

OF ELASTICITY

A beam’s deflection is dependent upon

the modulus of elasticity (MOE) and the

beam’s cross-section. There are two

components of deflection, deformation

from bending and deformation from

shear. An “apparent” MOE is typically

published for wood structural products.

The apparent MOE encompasses

both deflection components. However

a “true” MOE value is sometimes

referenced, which only corresponds

to the bending portion of deflection

and thus is “shear-free”. A true MOE

is approximately 5% higher than the

apparent MOE (the difference does

vary slightly depending upon span

length and beam depth). For example,

the true MOE of a 24F-V4/DF glulam

is approximately 1,900,000 psi but

the apparent and published MOE is

1,800,000 psi. The designer must

add the shear deflection component

to bending deflection when using the

higher true MOE.

BALANCED AND UNBALANCED BEAM LAYUPS

The most critical areas of a glulam beam are the outside laminations.

Thus, the strongest laminations are placed in these areas in either

unbalanced or balanced layups.

In unbalanced beams, typically known as V4s, the bottom

lamination is stronger than all the other laminations. This allows

for a more efficient use of timber resources. It is very important

to install unbalanced BOISE GLULAM® beams with the top side

up. (The word "top" is always printed on the corresponding side.)

V4 glulams may be designed and installed in both single and

multiple-span applications, and in relatively short cantilevers.

Balanced glulam beams, or V8s, have the same high-strength laminations

on both the top and bottom of the beam, creating a symmetric layup. A V8

glulam can be designed for multiple-span conditions and canti levers. V8s can

also be used for single spans, but V4s are most cost-effective for this type

of application. V8 BOISE GLULAM® beams may be special ordered at an

additional cost; check with your local distributor for availability.

T.L. = Tension Lamination

Boise Cascade EWP • BOISE GLULAM® Product Guide • 005/23/2013

Technical Items

DEFLECTION AND CAMBER

For relatively long span lengths, deflection may control

the design of glulam beams. Building codes limit

deflection for floor and roof members with "L/over"

limits. The " L" is simply the span length in inches. It

can be divided by a number — for example, 360 for

live load on floors — to determine the maximum

amount of deflection a member can have for the

corresponding span under full design loads. Thus, a

greater amount of deflection is allowed for members

with longer spans.

Camber is the amount of curvature (reverse

deflection) that is built into a glulam beam during

the manufacturing process to offset a portion of the

design load deflection. Beams may be manufactured

with a 5000' radius camber on a special order

basis. The industry has moved to a 5000-foot radius

camber which has become the standard camber.

Camber is specified mostly to reduce the aesthetic

effect of long-span members. Camber can also be

specified to reduce the amount of deflection or create

roof drainage — for example, it may be used to limit

water collection on near-flat roofs.

The table to the below illustrates the camber at the

center of the beam when specific lengths and radii

are specified.

CAMBER CURVATURE IN INCHES

Beam

Length

Radius In Feet

400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 3200 3500 5000

200000000000000000

400000000000000000

6⅛⅛⅛00000000000000

8 ¼ ⅛⅛⅛⅛⅛00000000000

10 ⅜¼¼⅛⅛⅛⅛⅛⅛⅛⅛000000

12 ½⅜¼¼⅛⅛⅛⅛⅛⅛⅛⅛⅛⅛⅛0 0

14 ¾½⅜¼¼¼⅛⅛⅛⅛⅛⅛⅛⅛⅛⅛0

16 1⅝½⅜⅜¼¼¼¼⅛⅛⅛⅛⅛⅛⅛0

18 1¼ ¾ ⅝½⅜⅜¼¼¼¼¼⅛⅛⅛⅛⅛⅛

20 1½ 1 ¾ ⅝½⅜⅜⅛¼¼¼¼¼¼¼⅛ ⅛

22 1⅞ 1¼ ⅞¾⅝½½⅜⅜⅜¼¼¼¼¼¼⅛

24 2⅛ 1½ 1⅛ ⅞ ¾⅝½½⅜⅜⅜⅜¼¼¼¼⅛

26 2½ 1¾ 1¼ 1 ⅞¾⅝⅝½½⅜⅜⅜⅜⅜¼ ¼

28 3 2 1½ 1⅛ 1⅞¾⅝⅝½½½⅜⅜⅜⅜¼

30 3⅜ 2¼ 1¾ 1⅜ 1⅛ 1⅞¾⅝⅝⅝½½½⅜⅜¼

32 3⅞ 2½ 1⅞ 1½ 1¼ 1⅛ 1⅞¾¾⅝⅝½½½½¼

34 4⅜ 2⅞ 2⅛ 1¾ 1½ 1¼ 1⅛ 1⅞¾¾⅝⅝⅝½½⅜

36 4⅞ 3¼ 2⅜ 21⅝ 1⅜ 1¼ 1⅛ 1⅞¾¾¾⅝⅝½⅜

38 5⅜ 3⅝ 2¾ 2⅛ 1¾ 1½ 1⅜ 1¼ 1⅛ 1⅞⅞¾¾⅝⅝⅜

406432⅜ 2 1¾ 1½ 1⅜ 1¼ 1⅛ 1⅞⅞¾¾⅝½

42 6⅝ 4⅜ 3¼ 2⅝ 2¼ 1⅞ 1⅝ 1½ 1⅜ 1¼ 1⅛ 11⅞⅞¾ ½

44 7¼ 4⅞ 3⅝ 2⅞ 2⅜ 2⅛ 1⅞ 1⅝ 1½ 1⅜ 1¼ 1⅛ 11⅞⅞½

46 7⅞ 5¼ 4 3⅛ 2⅝ 2¼ 2 1¾ 1⅝ 1½ 1⅜ 1¼ 1⅛ 11⅞ ⅝

48 8⅝ 5¾ 4⅜ 3½ 2⅞ 2½ 2⅛ 1⅞ 1¾ 1⅝ 1½ 1⅜ 1¼ 1⅛ 1⅛ 1⅝

50 9⅜ 6¼ 4¾ 3¾ 3⅛ 2⅝ 2⅜ 2⅛ 1⅞ 1¾ 1⅝ 1½ 1⅜ 1¼ 1⅛ 1⅛ ¾

52 10⅛ 6¾ 5⅛ 43⅜ 2⅞ 2½ 2¼ 2 1⅞ 1¾ 1½ 1½ 1⅜ 1¼ 1⅛ ¾

54 10⅞ 7¼ 5½ 4⅜ 3⅝ 3⅛ 2¾ 2⅜ 2⅛ 21⅞ 1⅝ 1½ 1½ 1⅜ 1¼ ⅞

56 11¾ 7⅞ 5⅞ 4¾ 3⅞ 3⅜ 32⅝ 2⅜ 2⅛ 2 1¾ 1⅝ 1⅝ 1½ 1⅜ ⅞

58 12⅝ 8⅜ 6¼ 5 4¼ 3⅝ 3⅛ 2¾ 2½ 2¼ 2⅛ 2 1¾ 1⅝ 1⅝ 1½ 1

60 13½ 9 6¾ 5⅜ 4½ 3⅞ 3⅜ 3 2¾ 2½ 2¼ 2⅛ 1⅞ 1¾ 1¾ 1½ 1

62 14⅜ 9⅝ 7¼ 5¾ 4¾ 4⅛ 3⅝ 3¼ 2⅞ 2⅝ 2⅜ 2¼ 2 1⅞ 1¾ 1⅝ 1⅛

64 15⅜ 10¼ 7⅝ 6⅛ 5⅛ 4⅜ 3⅞ 3⅜ 3⅛ 2¾ 2½ 2⅜ 2¼ 2 1⅞ 1¾ 1¼

66 16⅜ 10⅞ 8⅛ 6½ 5½ 4⅝ 43⅝ 3¼ 3 2¾ 2½ 2⅜ 2⅛ 21⅞ 1¼

68 17⅜ 11½ 8⅝ 6⅞ 5¾ 5 4⅜ 3⅞ 3½ 3⅛ 2⅞ 2⅝ 2½ 2¼ 2⅛ 21⅜

70 18⅜ 12¼ 9¼ 7⅜ 6⅛ 5¼ 4⅝ 4⅛ 3⅝ 3⅜ 3⅛ 2⅞ 2⅝ 2½ 2¼ 2⅛ 1½

72 19½ 13 9¾ 7¾ 6½ 5½ 4⅞ 4⅜ 3⅞ 3½ 3¼ 3 2¾ 2⅝ 2⅜ 2¼ 1⅝

74 20½ 13¾ 10¼ 8¼ 6⅞ 5⅞ 5⅛ 4⅝ 4⅛ 3¾ 3⅜ 3⅛ 2⅞ 2¾ 2⅝ 2⅜ 1⅝

76 21⅝ 14½ 10⅞ 8⅝ 7¼ 6¼ 5⅜ 4⅞ 443⅝ 3⅜ 3⅛ 2⅞ 2¾ 2½ 1¾

ANSI A190.1-2012 4.2.2 Tolerance for Camber or Straightness – The tolerances are applicable at the time of manufacture without allowances for dead load deection. Up to 20 ft., the tolerance is plus or

minus ¼ in.. Over 20 ft., increase tolerance ⅛ in. per each additional 20 ft. or fraction thereof, but not to exceed ¾ in.

The tolerances are intended for use with straight or slightly cambered members and are not applicable to curved members such as arches.

Boise Cascade EWP • BOISE GLULAM® Product Guide • 05/23/2013

Technical Items

ADHESIVES

BOISE GLULAM® beams are manufactured with

exterior-grade or wet-use adhesives that comply with

all recognized national glulam standards. The pur pose

of exterior-grade adhesives is to ensure that the design

values of the beams are not compromised when the

beams are directly exposed to the weather during

construction. Though wet-use adhesives are required

when glulam beams exceed a moisture content of

16% for extended periods of time after installation,

the beams still must be protected from exterior

exposure. (For applications where moisture content

may exceed 19%, see Preservative Treatment.)

(ANSI A190.1-2012 Standard for Wood Products -

Structural Glued Laminated Timber) See page 6 of

this guide – "Exposed Applications for Glulam”

HANDLING & STORAGE

Water-resistant wrapping is often specified to protect

beams from moisture, soiling, and surface scratches

during transit and job-site storage. Because

exposure to sunlight can discolor beams, opaque

wrappings are recommended. Beams can be

wrapped individually or by the bundle. In applications

where appearance is especially important, individual

wrapping should be left intact until installation

to minimize exposure to job-site conditions.

Beams are commonly loaded and unloaded with

forklifts. For greater stability, the sides of the

beams, rather than the bottoms, should rest on the

forks. Supporting extremely long beams on their

sides, however, can cause them to flex excessively,

increasing the risk of damage. Use multiple forklifts

to lift long beam members.

A level, well-drained, covered storage site is recom-

mended. Keep beams off the ground, using

lumber blocking, skids, or a rack system. Keep

beams level. The wrapping on beams should be

left in place to protect them from moisture, soiling,

sunlight, and scratches. For long-term storage, cut

slits in the bottom of the wrapping to allow ventilation

and draining of any entrapped moisture. Proper

ventilation and drainage will reduce the likelihood of

water damage, staining, and the start of decay.

CHECKING

Checking occurs naturally in timber when wood

fibers dry. As the outer fibers lose moisture and

attempt to shrink, they are restrained by the fiber in

the inner portion of the beam, which loses moisture

at a much slower rate. Rapid drying increases the

difference in moisture content between the inner

and outer fibers and thus the chances for checking

in the timber member. To minimize the potential

for checking, BOISE GLULAM® is produced from

special grades of lumber specifically dried to less

than 16% moisture content.

Example of Checking

End Side

ee Tech Note BG-1 at http://www.bc.com/wood/ewp/

guides-resources/Technical-Notes/BOISE-GLULAM-

Technical-Notes.html. Contact Boise Cascade EWP

Engineering for any further technical guidance.

FIELD NOTCHING & DRILLING

Glulam beams are generally designed for applica tions

where they will be highly stressed under design loads.

For this reason, field modifications such as notching,

tapering, or drilling may only be made only after approval

has been given by the project’s design professional of

record and/or Boise Cascade Engineered Wood Products

representative. For the proper location of smaller holes,

please refer to page 9. Analysis of notches and tapered

end cuts on BOISE GLULAM® beams may be performed

by a qualified user of BC CALC®, Boise Cascade EWP's

engineered wood sizing software

Boise Cascade EWP • BOISE GLULAM® Product Guide • 005/23/2013

Technical Items

DIMENSIONAL TOLERANCES

The tolerances permitted at the time of manufacture

per ANSI Standard A190.1-2012 are as follows:

Width – Plus or minus 1/16" of the specified width.

Depth – Plus ⅛" per foot of depth. Minus 3/16", or

1/16" per foot of depth, whichever is larger.

Length – Up to 20 feet – Plus or minus 1/16"

Over 20 feet – Plus or minus 1/16" per

20 feet of length.

Note that the above tolerances do not apply to rough

sawn textured beams.

Camber or Straightness – Tolerances are intended

for use with straight or slightly cambered beams.

The tolerances permitted at the time of manufacture,

with out allowance for dead load deflection, are as

follows:

Up to 20 feet – Plus or minus ¼".

Over 20 feet – Add ⅛" per each additional

20 feet or fraction thereof, but not to exceed plus

or minus ¾".

Squareness – The tolerance of the cross section

shall be within plus or minus ⅛" per foot of specified

depth, unless a specially shaped beam is selected.

EXPOSED APPLICATIONS FOR GLULAM

BOISE GLULAM® beams are intended for applica-

tions where mold, decay, and/or insect attack are not

con cerns. For conditions where glulams are perma-

nently exposed to the weather, have direct ground or

con crete contact, or are exposed to significant mois-

ture from condensation or other sources, preservative

treat ment is required as specified by applicable

building codes. For information on different treat-

ments for specific applications, please consult a

wood treater or treating association. Please note

that when glulams are treated, design values may be

affected.

All field cuts – including notches, end cuts, and

holes – should be performed before the glulam beam

is treated. All fasteners used with treated glulam

beams must be resistant to corrosion from moisture.

Consumer Information Sheets that detail proper use

and handling of products with the specified treatments

should be obtained from the treater for proper use

and handling of products with the specified treat-

ments. In addition, Material Safety Data Sheets

(MSDS) and OSHA-required hazard labels provided

with each preservative should be reviewed. Please

note that when glulams are treated and installed in

exterior applications, design values shall be adjusted

per building code provisions.

Durable species glulams such as Port Orford Cedar

are readily available and provide alternative product

for exposed applications. This may be a good option

for your top appearance applications. See Durable

Species Flyer for additional information on options

Consult your local distributor for availability.

FIRE RESISTANCE

BOISE GLULAM® beams, like many other wood

products, have advantageous fire-endurance properties.

Unlike steel that loses a large percentage of its strength

when exposed to typical temperatures during a fire,

wood beams char on the surface. Char ring forms a

self-insulating surface layer when wood is exposed to

flame or relatively high temper atures. The wood below

this layer retains its struc tural properties during a fire.

Most solid wood members, including BOISE GLULAM®

beams, char at a rate of approximately 1½ inches per

hour. BOISE GLULAM® may be special ordered to

create a beam with a one-hour fire rating. In this beam

specification, an additional high grade tension lamination

replaces a core lamination in the manufacturing process.

The project's design professional of record shall specify

this type of fire-resistance requirement.

Larger glulam beams may be utilized in heavy timber

construction, and a fire-resistance classification where

exposed beams are designed to maintain a specified

strength level for a specified duration during a fire. For

further information on heavy timber construction, please

refer to Heavy Timber Construction - Wood Construction

Data #5, American Wood Council.

The adhesives used in BOISE GLULAM® beams do

not reduce the fire-endurance properties of the wood

material. When compared to wood, the adhesives

have a higher ignition temperature and char in a very

similar manner. When burned, the adhesives do not

increase smoke toxicity. See Boise Cascade Fire Design

& Installation Guide for further design and detailing

information. For further infor mation on fire-resistance

design, please contact Boise Cascade EWP Engineering.

Boise Cascade EWP • BOISE GLULAM® Product Guide • 05/23/2013

Allowable Design Values & Stresses, Section Properties

BOISE GLULAM® 24F-V4 Design Values

BOISE GLULAM® 24F-V4 Allowable Design Stresses

Bending

Fb [psi] Horizontal

Shear

Fv [psi]

Modulus

of Elasticity

(Apparent)

E [psi]

Tension

Parallel to

Grain

Ft [psi]

Compression

Parallel to

Grain

Fc [psi]

Compression

Perpendicular

to Grain

Fc [psi]

Tension Zone

in Tension

Compression

Zone in Tension

2400 1850 265 1,800,000* 1100 1650 650

Notes:

The data is for stock beams. For information on sizes not listed, please use BC CALC® software or consult with Boise Cascade EWP Engineering.

Designer of record shall review the glulam’s application and consider the conditions of use. Contact Boise Cascade EWP Engineering for non-standard application

design stresses and reduction factors for wet-use and stability conditions.

*See note on Apparent vs True MOE on page 3 for clarification

Width

(in) Depth

(in) Weight

(plf)

Allowable

Shear

(lbs)

Allowable

Moment

(ft-lbs) Moment of

Inertia (in4)

3⅛

6 4.6 3313 3750 56.3

7½ 5.7 4141 5859 109.9

9 6.8 4969 8438 189.8

10½ 8.0 5797 11484 301.5

12 9.1 6625 15000 450.0

13½ 10.3 7453 18984 640.7

15 11.4 8281 23438 878.9

16½ 12.5 9109 28359 1169.8

18 13.7 9938 33750 1518.8

3½

4½ 3.8 2783 2363 26.6

65.1 3710 4200 63.0

7½ 6.4 4638 6563 123.0

9 7.7 5565 9450 212.6

10½ 8.9 6493 12863 337.6

12 10.2 7420 16800 504.0

13½ 11.5 8348 21263 717.6

15 12.8 9275 26250 984.4

5⅛

67.5 5433 6150 92.3

7½ 9.3 6791 9609 180.2

911.2 8149 13838 311.3

10½ 13.1 9507 18834 494.4

12 14.9 10865 24600 738.0

13½ 16.8 12223 30770 1050.8

15 18.7 13581 37589 1441.4

16½ 20.6 14939 45052 1918.5

18 22.4 16298 53151 2490.8

19½ 24.3 17656 61881 3166.8

21 26.2 19014 71237 3955.2

22½ 28.0 20372 81215 4864.7

24 29.9 21730 91810 5904.0

Width

(in) Depth

(in) Weight

(plf)

Allowable

Shear

(lbs)

Allowable

Moment

(ft-lbs) Moment of

Inertia (in4)

5½

9 12.0 8745 14850 334.1

10½ 14.0 10203 20213 530.6

12 16.0 11660 26214 792.0

13½ 18.0 13118 32789 1127.7

15 20.1 14575 40056 1546.9

6¾

7½ 12.3 8944 12656 237.3

9 14.8 10733 18225 410.1

10½ 17.2 12521 24457 651.2

12 19.7 14310 31520 972.0

13½ 22.1 16099 39425 1384.0

15 24.6 17888 48163 1898.4

16½ 27.1 19676 57724 2526.8

18 29.5 21465 68102 3280.5

19½ 32.0 23254 79288 4170.9

21 34.5 25043 91276 5209.3

22½ 36.9 26831 104061 6407.2

24 39.4 28620 117636 7776.0

8¾

9 19.1 13913 23048 531.6

10½ 22.3 16231 30891 844.1

12 25.5 18550 39812 1260.0

13½ 28.7 20869 49798 1794.0

15 31.9 23188 60834 2460.9

16½ 35.1 25506 72911 3275.5

18 38.3 27825 86018 4252.5

19½ 41.5 30144 100147 5406.7

21 44.7 32463 115290 6752.8

22½ 47.9 34781 131438 8305.7

24 51.0 37100 148585 10080.0

Notes:

Allowable moment calculated using glulam volume factor (Cv) with

a span length of 21 ft. Allowable moment shall be multiplied by

(21/Span Length [ft])1/10 for longer spans.

Boise Cascade EWP • BOISE GLULAM® Product Guide • 005/23/2013

Column Table & Allowable Stresses

BOISE GLULAM® Column Allowable Design Stresses

Combination 3 Column Grade

Compression

Parallel

to Grain

Fc [psi]

Bending Fb [psi] Modulus of Elasticity E [psi]

Compression

Perpendicular to

Grain (limiting

direction

Fc [psi]

Tension

Parallel to Grain

Ft [psi]

Load Perpendicular

to Gluelines Load Parallel

to Gluelines Load Perpendicular

to Gluelines Load Parallel

to Gluelines

2300 2000 2100 1,900,000 1,900,000 650 1450

Equivalent specific gravity for fastener design: SG = 0.5.

BOISE GLULAM® COLUMNS

Allowable Axial Load — Combination 3 Column Grade

Column

Length

[ft]

31/8" Wide Column

Allowable Axial Load (lb) 51/8" Wide Column

Allowable Axial Load (lb)

31/8" x 6" 31/8" x 71/2" 51/8" x 51/8" 51/8" x 6" 51/8" x 71/2"

100% 115% 125% 100% 115% 125% 100% 115% 125% 100% 115% 125% 100% 115% 125%

420,200 22,160 23,340 25,260 27,710 29,180 31,380 35,530 38,170

516,940 18,150 18,850 21,180 22,690 23,570 29,520 33,080 35,340 35,890 40,450 43,330

613,890 14,650 15,090 17,370 18,320 18,860 27,360 30,300 32,110 33,760 37,640 39,950

711,400 11,920 12,210 14,260 14,890 15,270 24,990 27,300 28,690 31,060 33,850 35,520 34,870 37,470 38,990

89,460 9,820 10,030 11,830 12,280 12,530 22,530 24,270 25,290 27,870 29,960 31,180 30,990 32,950 34,080

97,940 8,210 8,360 9,930 10,260 10,450 20,110 21,440 22,210 24,780 26,340 27,250 27,470 28,960 29,830

10 6,750 6,950 7,060 8,440 8,690 8,830 17,900 18,920 19,520 21,970 23,160 23,850 24,380 25,550 26,220

11 5,800 5,950 6,040 7,250 7,440 7,550 15,940 16,760 17,230 19,490 20,430 20,970 21,700 22,640 23,190

12 5,030 5,150 5,220 6,290 6,440 6,530 14,240 14,900 15,280 17,350 18,110 18,530 19,400 20,160 20,600

13 4,400 4,500 4,550 5,500 5,620 5,698 12,770 13,310 13,610 15,520 16,120 16,480 17,420 18,050 18,410

14 11,500 11,940 12,200 13,930 14,440 14,720 15,720 16,240 16,540

15 10,400 10,770 10,980 12,570 12,980 13,220 14,240 14,670 14,930

16 9,440 9,750 9,930 11,380 11,740 11,930 12,950 13,320 13,530

17 8,600 8,860 9,010 10,350 10,650 10,820 11,820 12,140 12,320

18 7,860 8,090 8,220 9,450 9,710 9,850 10,830 11,110 11,270

19 7,220 7,410 7,520 8,660 8,880 9,010 9,960 10,200 10,340

20 6,640 6,810 6,910 7,960 8,160 8,260 9,190 9,390 9,510

21 6,130 6,280 6,370 7,340 7,510 7,610 8,580 8,780 8,900

Column

Length

[ft]

63/4" Wide Column

Allowable Axial Load (lb) 83/4" Wide Column

Allowable Axial Load (lb) Notes:

Table assumes that the column is braced at

column ends only. Effective column length is

equal to actual column length.

2) Allowable loads are based on one-piece

column members used in dry service

conditions.

3) Allowable loads are based on an eccentricity

value equal to 0.167 multiplied by the column

thickness or width (worst case).

4) Allowable loads are based on axial loading

columns using the design provisions of the

National Design Specification for Wood

Construction (NDS), 2001 edition. For side

or other combined bending and axial loads,

use BC COLUMN software to analyze such

conditions.

5) See below for allowable design stresses.

6) Load values are not shown for short lengths

due to loads exceeding common connector

capacities. Load values are not shown for

longer lengths if the controlling slenderness

ratio exceeds 50 (per NDS).

7) It may be possible to exceed the limitations of

the table by analyzing a specific application

with the BC COLUMN software.

63/4" x 6" 63/4" x 71/2" 83/4" x 9"

100% 115% 125% 100% 115% 125% 100% 115% 125%

935,920 38,870 40,620

10 32,700 35,020 36,390

11 29,620 31,470 32,540

12 26,820 28,310 29,180 39,870 42,340 43,790

13 24,310 25,530 26,240 36,390 38,420 39,600

14 22,080 23,100 23,680 33,240 34,920 35,900

15 20,100 20,960 21,460 30,410 31,830 32,640

16 18,360 19,090 19,500 27,870 29,070 29,760

17 16,820 17,440 17,800 25,620 26,650 27,230

18 15,460 15,990 16,300 23,600 24,480 24,990

19 14,250 14,710 14,970 21,800 22,570 23,000

20 13,170 13,570 13,800 20,180 20,850 21,240

21 12,200 12,550 12,750 18,730 19,320 19,650

22 11,330 11,640 11,820 17,430 17,940 18,240 39,360 41,030 41,950

23 10,550 10,820 10,980 16,250 16,710 16,970 36,940 38,400 39,250

24 9,840 10,090 10,230 15,180 15,590 15,820 34,710 36,020 36,760

25 32,660 33,830 34,510

26 30,780 31,840 32,440

27 29,060 30,010 30,560

28 27,460 28,330 28,830

29 26,000 26,780 27,240

30 24,630 25,360 25,780

Boise Cascade EWP • BOISE GLULAM® Product Guide • 05/23/2013

Allowable Holes – BOISE GLULAM® Beams

Horizontal Holes

1/3 Span

1/3 Depth

End Bearing Interior Bearing

Allowable Holes in Glulam Beams

See Note 3

1/3 Depth

Notes:

1) Square and rectangular holes are not permitted.

2) Round holes may be drilled or cut with a hole saw

anywhere within the shaded area of the beam.

3) The horizontal distance between adjacent holes shall

be at least two times the diameter of the larger hole.

4) Do not drill more than three access holes in any 4-foot

long section of beam.

5) The maximum round hole diameter permitted is:

Beam Depth 6" & 7½"9" &

greater

Maximum Hole Diameter 1" 2"

6) These limitations apply to holes drilled for plumbing

or wiring access only. The size and location of holes

drilled for fasteners are governed by the provisions

of the National Design Specification® for Wood

Construction.

7) Beams deflect under load. Size holes to provide

clearance where required.

8) This hole chart is valid for BOISE GLULAM® beams

supporting uniform load only. For beams supporting

concentrated loads or for beams with larger holes,

contact Boise Cascade EWP Engineering.

9) For vertical holes, see page 28 of the BOISE

GLULAM® Specifier Guide for provisions with ridge

beams or contact Boise Cascade EWP Engineering.

See Tech Note BG-3

Boise Cascade EWP • BOISE GLULAM® Product Guide • 005/23/2013

Common Details - BOISE GLULAM® Beams

G9G8

G4 G5 G6

TOP

Beam Depth Change

at Intermediate Support

Solid post or

multiple studs

to provide

adequate

bearing under

each beam

Common Details

TOP

BCI® Joist or engineered rimboard

blocking for lateral support

BOISE GLULAM®

column or studs,

full width of beam

Beam to Wall with Lateral Support

TOP

Moisture barrier

at bearing

Beam to Concrete/Masonry Wall

Minimum

" air space

between beam and

concrete/masonry wall

TOP

Verify hanger

capacity with

manufacturer's

specifications

Beam to Beam Connection

Trimmers to

provide adequate

bearing

TOP

Strap per code if top plate is not

continuous over beam

Beam Bearing for Header

TOP

Strap per code if top plate is

not continuous over beam

BOISE

GLULAM®

Beam Framing to Wall

TOP

Adequate

Lateral

Support

Beveled Plate

End Wall Bevel Plate

G1 G2 G3

Beam Framing to Wall Beam Bearing for Header Beam to Wall with

Lateral Support

End Wall Bevel Plate Beam to Beam

Connection Beam to Concrete /

Masonry Wall

Beam Depth Change at

Intermediate Support Bevel Cutting

DO NOT bevel cut

BOISE GLULAM® beyond

inside face of wall without

approval from Boise Cascade

EWP Engineering or BC

CALC® software analysis.

G10

Sloped Seat Cut

BOISE GLULAM

column or studs,

full width of beam

TOP

Beam to Column Connection

Drilling permitted

for standard

connections.

Should be

located in the

lower section of

the beam to

avoid splitting

G7 Beam to Column

Connection

Provide adequate

lateral support

Sloped seat cut.

Not to exceed

inside face

of bearing.

Boise Cascade EWP • BOISE GLULAM® Product Guide • 05/23/2013

BOISE GLULAM® Beams Substitution Tables

BOISE GLULAM

—

Douglas Fir-Larch Solid Sawn Substitution Table

NOTES

• Table intended for preliminary design only.

Substitutions should always be approved by the

project's design professional of record.

• Table assumes that original solid sawn beam was sized

properly, loading should always be verified.

• Table was developed by comparing allowable uniform

load capacities due to the worst case control of

bending, shear and deflection limits for simple span

applications.

• Deflection limited to L/360 for live load, based upon a

live load/total load ratio of 0.8 (residential floor loading

40/10 psf).

Floor Beam Applications (100%) Duration for BOISE GLULAM®

24F-V4 BOISE GLULAM

Equivalent Member

Span [ft]

4x6

Doug Fir-Larch 4x8

Doug Fir-Larch 4x10

Doug Fir-Larch 4x12

Doug Fir-Larch 6x8

Doug Fir-Larch 6x10

Doug Fir-Larch 6x12

Doug Fir-Larch

Select

Structural No. 1 Select

Structural No. 1

3.125 x 6 3.125 x 6 3.125 x 7.5 3.125 x 7.5 3.125 x 9 3.125 x 9 3.125 x 9 3.125 x 9 3.125 x 9 3.125 x 9 3.125 x 10.5 3.125 x 10.5 3.125 x 10.5 3.125 x 10.5

5.125 x 7.5 5.125 x 7.5 5.125 x 9 5.125 x 9 5.125 x 9 5.125 x 9

3.125 x 6 3.125 x 6 3.125 x 9 3.125 x 7.5 3.125 x 10.5 3.125 x 9 3.125 x 10.5 3.125 x 10.5 3.125 x 9 3.125 x 9 3.125 x 10.5 3.125 x 10.5 3.125 x 12 3.125 x 12

5.125 x 7.5 5.125 x 7.5 5.125 x 9 5.125 x 9 5.125 x 10.5 5.125 x 10.5

3.125 x 6 3.125 x 6 3.125 x 9 3.125 x 7.5 3.125 x 10.5 3.125 x 9 3.125 x 12 3.125 x 10.5 3.125 x 9 3.125 x 9 3.125 x 12 3.125 x 10.5 3.125 x 13.5 3.125 x 12

5.125 x 7.5 5.125 x 7.5 5.125 x 10.5 5.125 x 9 5.125 x 10.5 5.125 x 10.5

3.125 x 6 3.125 x 6 3.125 x 9 3.125 x 7.5 3.125 x 10.5 3.125 x 9 3.125 x 12 3.125 x 10.5 3.125 x 9 3.125 x 9 3.125 x 12 3.125 x 12 3.125 x 13.5 3.125 x 13.5

5.125 x 7.5 5.125 x 7.5 5.125 x 10.5 5.125 x 10.5 5.125 x 12 5.125 x 12

3.125 x 6 3.125 x 6 3.125 x 9 3.125 x 7.5 3.125 x 10.5 3.125 x 10.5 3.125 x 12 3.125 x 10.5 3.125 x 9 3.125 x 9 3.125 x 12 3.125 x 12 3.125 x 13.5 3.125 x 13.5

5.125 x 7.5 5.125 x 7.5 5.125 x 10.5 5.125 x 10.5 5.125 x 12 5.125 x 12

3.125 x 6 3.125 x 6 3.125 x 9 3.125 x 7.5 3.125 x 10.5 3.125 x 10.5 3.125 x 12 3.125 x 12 3.125 x 9 3.125 x 9 3.125 x 12 3.125 x 12 3.125 x 13.5 3.125 x 13.5

5.125 x 7.5 5.125 x 7.5 5.125 x 10.5 5.125 x 10.5 5.125 x 12 5.125 x 12

3.125 x 6 3.125 x 6 3.125 x 9 3.125 x 7.5 3.125 x 10.5 3.125 x 10.5 3.125 x 12 3.125 x 12 3.125 x 9 3.125 x 9 3.125 x 12 3.125 x 12 3.125 x 13.5 3.125 x 13.5

5.125 x 7.5 5.125 x 7.5 5.125 x 10.5 5.125 x 10.5 5.125 x 12 5.125 x 12

3.125 x 6 3.125 x 6 3.125 x 9 3.125 x 7.5 3.125 x 10.5 3.125 x 10.5 3.125 x 12 3.125 x 12 3.125 x 9 3.125 x 9 3.125 x 10.5 3.125 x 10.5 3.125 x 13.5 3.125 x 13.5

5.125 x 7.5 5.125 x 7.5 5.125 x 10.5 5.125 x 10.5 5.125 x 12

5.125 x 12