HomeMy WebLinkAboutPermit Building 2016-09-29-WARNING Disregarding permanent restraint/bracing is a major cause of truss field performance
problems and has been known to lead to roof or Floor system collapse.
iADVERTENCIA! Descuidar el arriostre/restricci6n permanente as una causa principal de prob-
lemas de rendimiento del truss en campo y habia conocido a llevar at derrumbamiento del sistema
del techo o piso.
ACoVr, J LEL.rq Trusses with clear spans of 60 feet (16.3 m) or greater, may require complex perma-
nent bracing. Please always consult a registered design professional.
g,3%, r�,' Tramos sobre 60 pies o mos pueden requerir arriostre permanente complejo. Per
favor, consulte siempre a un profesional registrado de diseno.
RestraintBracing Materials & Fastener
Materiales y Cierres de Restriccion/Arriostre
Commonly used restraint/bracing materials include wood structural panels, gypsum board sheathing,
stress -graded lumber, proprietary metal products, and metal purlins and straps.
Materia/es comunes de aniostrar/restringir incluyen pansies estructurales de madera, entablado de yeso,
madera graduada per esfuerza, productos de metal patentados, y vigas de soporte y liras de metal.
MINIMUM ATTACHMENT REQUIREMENTS
FOR LUMBER
RESTRAINTIBRACING12
Provee restricci6n y arriostre por:
•• SINGLE
PLY TRUSSES'
Specified
CLR
Size
of
Truss
Web
Ir
Type & Size of Web
Reinforcement
L I Scab'
1 or U
Grade of Web
Reinforcement
Minimum
Length of Web
Reinforcement
Minimum
Connection of Web
Reinforcement to Web
r, r
20
2x4t2AW
,r
,r
�I■Is 1'lal,r
' other attachment requirements maybe specified by the buiidag designer or truss designer.
' The gradelsize and attachment for bracing materials such as wood structural panels, gypsum board sheathing,
proprietary metal restranlibranng products, and metal pudins and straps are pmvded by the building designer.
Permanent Bracing for the Various Planes of a Truss
Arriostre Permanente para Varies Pianos de un T11rusts
Permanent bracing is important because it,
a) prevents out -of -plane buckling of truss
members,
b) helps maintain proper truss spacing, and
C) resists and transfers lateral loads from wind
and seismic forces.
E/ arriostre permanente es importante porque,
a im ide el forcer fuera-de- o d los miem-
bros
plan a ruler
bros del truss,
b) ayuda an mantener espaciamiento apropiado
de los trusses, y
c) resists y pasa las cargas laterales de viento
y fuerzas sismicas aplicadas at sistema del
truss.
Trusses require permanent bracing within ALL
of the following planes:
1. Top chord plane
2. Bottom chord plane
3. Web member plane
Top
chord
plane
Bottom
chord plane
Trusses requieren arriostre permanente dentro
de TODOS los siguientes pianos:
1. Plano de la cuerda superior
2. Plano de la cuerda inferior
3. Plano del miembro secundario
1170H The truss, or a portion of its members, will buckle (i.e., fail) at loads far less than
design without permanent bracing.
Sin el arriostre permanente, del truss, o un parte de los miembros, torceran
(ej. fallarein) de cargas muchas menos que las cargas que el truss as disenado a llevar.
Structural
1. Permanent Bracing for the Tbp Chord Plane sheathing
Arriostre Permanente para el Plano de la Cuerda°n top chord
Superior plane
RI Use plywood, oriented strand board (OSB), or wood or metal
structural purlins that are properly braced. Attach to each
truss.
Use contrachapado, panel de fibras orientado (OSB),
o vigas de soporte de madera o metal que este'n
amostrados apropiadamente. Sujete a cada truss. -1
0 The Truss Design Drawing (TDD) provides information
on the the assumed support for the top chord. \
EI Dibujo del Diseno de Truss (TDD) proves
informaci6n sobre at soporte supuesto para la
cuerda superior.
H Fastener size and spacing requirements and
grade for the sheathing, purlins and bracing are
provided in the building code and/or by the build-
ing designer.
EI tamano de cierre y requisites de espaciamien-
to y grade para ei entablado, vigas de soporte y
arriostre son provistos en el c6digo del edificio
y/o per el disenador del edificio.
2. Permanent Bracing for the Bottom
Chord Plane
Arriostre Permanente para at Plano de
le Cuerda Inferior
R1 Use rows of continuous lateral restraint with diagonal
bracing, gypsum board sheathing or some ceiling
9
material capable of functioning as a diaphragm.
Use frlas de restricci6n lateral continua con arriostre
diagonal, entablado de yeso o cualquier otro material para
techo que pueda funcionar tomo un diafragma.
Diagonal `X" bracing In the top chord plane at
intervals specified by the building designer
Directly
attached
rigid ceiling
2 The TDD provides information on the assumed support for the bottom chord.
EI TDD proves informaci6n sobre el soporte supuesto para la cuerda inferior.
EV1 Install bottom chord permanent lateral restraint at the spacing indicated on the TDD and/or
by the building designer with a maximum of 10'(3 m) on -center.
Instals restricci6n lateral permanente de la cuerda inferior at espaciamiento indicado en at
TDD yfo per el disenador del edificio con un maximo de 10 pies an el centro.
Diagonal bracing. CLR splice reinforcement
Attach to each truss. - Truss Member rax CLR
Bottom chords
I I
i A A
Lateral
0' 520• restraint
I - � - � Minimum 7 rax Scab block center
1�
(3 m) 510' ..r/ (6 ) 2x4xi2' over CLR splice.
M) 5510' or greater Attach to CLR with minimum 8-16d
m) 510' lapped over (0.135x3.5-) nails each
M) Note: Some two trusses side of splice or as specified by the
chord and or CLR splice Building Designer.
web members reinforcement. SECTION A -A
Lateral restraint and diagonal bracing used not shown for
to brace the bottom chord plane. clarity.
Truss
3. Permanent Bracing for the Web Member Plane Member
Arriostre Permanente papa El Plano del Milembro Secundarto
Web member permanent bracing collects and transfers buckling restraint forces and/or lateral loads
from wind and seismic forces. The same bracing can often be used for both functions.
Arriostre permanente de los miembros secundarios recogen y pasan fuerzas de restricci6n de
forcer y/o cargas laterales de viento y fuerzas sismicas. A menudo el mismo arriostre puede ser
usado para ambos funciones.
Individual Web Member Permanent Restraint & Bracing
Restriccidn y Arriostre Permanente de Miembros Secundarius Individuales
Check the TDD to determine which web members (if any) require restraint to resist buckling.
Revise el TDD para determinar cuales miembros secundarios One restraint required
(si algunos) requieren restricci6n para resistir el forcer. rr: -- on each of these webs.
0 Restrain and brace with, - - Note: CLR can
installed on either
side
A. Continuous lateral restraint & diagonal bracing, or of Member.
B. Individual member web reinforcement. --– t-_
Restrinja y arriostre con,
A. Restricci6n lateral continua y arriostre diagonal, o
B. Refuerzo de miembros secundarios individuates.
A. Continuous Lateral Restraint (CLR) & lid
Diagonal Bracing 1
Restriccidn Lateral Continua (CLR) y Arriostre Diagonal
Attach each row of CLR at the locations shown on the TDD.
Sujete sada fila de CLR an las ubicaciones mostrados en of TDD.
0 Install the diagonal bracing at an angle of less -than -or -equal -to 45° to the CLR and position so that
it crosses the web in close proximity to the CLR. Attach the diagonal brace as close to the top and
bottom chords as possible and to each web it crosses. Repeat every 20'(6.1 m) or less.
Instate of arriostre diagonal a un sngulo menos de o igual a 45° al CLR y col6quelo para que truce
la cuerda muy cerca del CLR. Sujete el arriostre diagonal tan pr6ximo a las cuerdas superiores y
infenores tomo sea posible y a cada cuerda que to cruza. Repita cads 20 pies (6.1 m) o menos.
EXAMPLES OF DIAGONAL BRACING WITH CONTINUOUS
LATERAL RESTRAINT
Co0rurous' Permanent conlinuous
lateral restra'nt lateral restraint
5'e
-;0 l
Diagonal' S
5' bracing = \
133.2x4
stress graded
lumber, typ. 5_2 5210• m)
Group of 3 Trusses
wr ��`fir, r.
Note: Some chord and web members not
shown for clarity.
Structural
sheathing
Lateral
restraint
L Lateral restraint & diagonal i.e. three or
g nal bracing can also be used with small groups of trusses ( ,
less). Attach the lateral restraint & diagonal brace to each web member they cross.
Restriccidn lateral y arriostre diagonal tambidn puede ser usado con grupos pequenos de trusses
(ej. fres o menos). Sujete la restricci6n lateral y el arriostre diagonal a cada miembro secundario
que los cruzan.
ALWAYS DIAGONALLY BRACE THE CONTINUOUS LATERAL RESTRAINT!
istlEMPRE ARRIosTRE LA RESTRicci6N LATERAL CONTINUA D/AGONALMENTEir
B. Individual Web Member Reinforcement
Refuerzo de Miembros Secundarios Individuales
T-, L-, Scab, I-, U -Reinforcement, proprietary metal reinforcement and stacked web products
provide an alternative for resisting web buckling.
T-, L-, costra, 1-, U-Refuerzo, refuerzo de metal patentando y productos de miembros secundarios
amontonados proveen una alternativa para resistir el forcer de los miembros secundarios.
Metal Stacked
Reinforcement ®Scab Reinforcement � Product Web
r� Truss Member typ. L -Reinforcement
The following table may be used unless more specific information is provided.
La siguiente tab/a puede ser usada a mens que informacicin m6s especifrca esti provista.
'Maximum web length is 14 feet (4.3m).
'Attach Scab Reinforcement to web with 2 rows of minimum 10d (0.1204'1 nabs at 6' (150 mml on -center.
PERMANENT LATERALRERMINT
& DIAGONAL BRAQNG REQUIRED R o I I
`mom` I x
1�1
REMCC16N LATERAL PERMANENTEYARRIOSTRE t
DIAGONAL ES REQUERIDO
WEB REINFORCEMENT REQUIRED i A r
T. cca
aeraoacFx�i;r iy li
ztoserumzo s !1
�scnas a j.
REFlIERIO DE MiEM IRO SECUNDARIO REQUERIDO i
Some truss manufacturers provide additional assistance by using tags to mark the web members
that require lateral restraint or reinforcement.
Algunos fabricantes de trusses marcan an el truss las ubicaciones de refuerzo o restricci6n lateral
de miembros secundarios con etiquetas similares a las arriba.
Web Member Plane Permanent Building Stability Bracing to Transfer
Wind & Seismic Forces
Arriostre de Estabilidad Permanente del Edifcio del Plano de Miembros
Secundarlos para Desplazar Fuerzas de Trento y Fuerzas Sismicas
JJI The web member restraint or reinforcement specified on a TDD is required to resist buckling due to
axial forces caused by the in -plane loads applied to the truss. Additional restraint and bracing within
the web member plane may also be required to transfer lateral forces due to wind and/or seismic
loads applied perpendicular to the plane of the trusses. This restraint and bracing is typically speci-
fied by the building designer.
La restricci6n o refuerzo de miembros secundarios especiffcada en un TDD es requerido para
resistir la deformation bajo fuerzas axiales causadas per cargas verticales aplicadas al truss. Re-
striccidn adicional y el aparato ortop6dico dentro del piano miembro de banda tambien puede ser
necesaria para transferir fuerzas laterales debidas at viento y / o cargas Sismicas aplicadas perpen-
dicular at piano de las cerchas. Esta restricci6n y arriostre es tipicamente provisto per el disenador
del edificio.
Diagonal brace to roof diaphragm blocking
Gable
frame
Horizontal /
L- reinforcement
Note: Top chord
sheathing not shown
for clarity.
Roof
diaphragm
blocking
Bottom chord
lateral restraint
Gable end/wall permanent diagonal bracing.
Locate in line with bottom chord permanent
CLR or as specified by the building designer.
Lj Some truss designers provide general design
tables and details to assist the building designer in
determiningthe bracing required to transfer lateral load deo wind and/or seismic forces from th
g q s u m e
gable end frame into the roof and/or ceiling diaphragm.
Algunos disenadores de trusses proveen tablas y detalles de diseno generates para asistir el
disenador del edificio en determiner at arriostre requerido para pasar cargas laterales debidas a
fuerzas de viento y/o fuerzas Sismicas del armaz6n hastial at diafragma del techo.
Gable Lnd Frames and Sloped Bottom Chords
Armazones Nastiales Y Cuerdas Inferiores Pendientes
0 The gable end frame should always match the profile of the adjacent trusses to permit installation
of proper bottom chord plane restraint & bracing unless special bracing is designed to support the
end wall.
EI armaz6n hastial siempre dabs encajar el peel de los trusses contiguous para permitir la insta-
laci6n de restricci6n y arriostre apropiada de la cuerda inferior a menos qua arriostre especial es
disenado para soportar la pared de extreme.
Bottom
chord
plane
5tampke of raked gable end wall
(wilh scissors gab'e end frame)
A@- ,' rL9K, Using a Oat bottom chord gable end frame with adjacent trusses that have sloped
bottom chords is prohibited by some building codes as adequate bracing of this condition is dif-
ficult and sometimes impossible. Special end wall bracing design considerations are required by
the building designer if the gable end frame profile does not match the adjacent trusses.
y.^'meq EI use de un armaz6n hastial de la cuerda inferior con trusses contiguos cuales
tienen cuerdas inferiores pendientes es prohibido per algunos c6digos de ediffcios porque ar-
riostre adecuado de esti condici6n es dificil y a veces imposible. Consideraciones especiales de
diseno para el arriostre de la pared de extreme son requeridos per at disenador del edificio si el
peel del armaz6n hastial no hacejuego con los trusses contiguos.
Permanent Bracing for Special Conditions
Arriostre Permanente Para Conditions Especiales
Sway Bracing—Arriostre de Sway' }�
0✓
"Sway" bracing is installed at the discretion of the building
designer to help stab'I'ze the truss system and minimize
C
.'
the lateral movement due to wind and seismic loads.
Arriostre de "sway" esti instalado per la discreci6n del
disenador del edificio para ayudar en estabilizar el sistema
de trusses y para minimizar el movimiento lateral debido a
cargas de viento y cargos slsmicas.
n Sway bracing installed continuously across the building
also serves to distribute gravity loads between trusses of
varying stiffness.
Arriostre de "sway" que es instatada continuadamente at traves del edificio tambien es usado para
distdbuir las cargas de gravedad entre trusses de rigidez variando.
Permanent RestraintirBracing for the Top Chord in a Piggyback Assembly
Restriccidn/Arriostre Permanente para la Cuerda Superior en un Ensamblaje de Piggyback
Provide restraint and bracing by: Repeat diagonal
• using rows of minimum 42 stress -graded bracing (red) at 10'
lumber CLR and diagonal bracing, or (3 m) intervals, or as
• connecting the CLR into the roof diaphragm, specified.
or
• adding structural sheathing or bracing l
frames, or
REINFORCEMENTWEB
Provee restricci6n y arriostre por:
•• SINGLE
PLY TRUSSES'
Specified
CLR
Size
of
Truss
Web
T
Type & Size of Web
Reinforcement
L I Scab'
1 or U
Grade of Web
Reinforcement
Minimum
Length of Web
Reinforcement
Minimum
Connection of Web
Reinforcement to Web
20
2x4t2AW
90%of web or
2x6
2x6
i Row
Samespecies
and grade or
betterthan
web membergreater
extend to within
6'(150 mm) of end
of web member,
whichever is
16d(0.131x3.5')
nails@6^(150 mm)
on -center'
2x8 2x8
2 Rows
2x4 ---2-2x4
2x6 ---p.2xg
2x82 -2x8
'Maximum web length is 14 feet (4.3m).
'Attach Scab Reinforcement to web with 2 rows of minimum 10d (0.1204'1 nabs at 6' (150 mml on -center.
PERMANENT LATERALRERMINT
& DIAGONAL BRAQNG REQUIRED R o I I
`mom` I x
1�1
REMCC16N LATERAL PERMANENTEYARRIOSTRE t
DIAGONAL ES REQUERIDO
WEB REINFORCEMENT REQUIRED i A r
T. cca
aeraoacFx�i;r iy li
ztoserumzo s !1
�scnas a j.
REFlIERIO DE MiEM IRO SECUNDARIO REQUERIDO i
Some truss manufacturers provide additional assistance by using tags to mark the web members
that require lateral restraint or reinforcement.
Algunos fabricantes de trusses marcan an el truss las ubicaciones de refuerzo o restricci6n lateral
de miembros secundarios con etiquetas similares a las arriba.
Web Member Plane Permanent Building Stability Bracing to Transfer
Wind & Seismic Forces
Arriostre de Estabilidad Permanente del Edifcio del Plano de Miembros
Secundarlos para Desplazar Fuerzas de Trento y Fuerzas Sismicas
JJI The web member restraint or reinforcement specified on a TDD is required to resist buckling due to
axial forces caused by the in -plane loads applied to the truss. Additional restraint and bracing within
the web member plane may also be required to transfer lateral forces due to wind and/or seismic
loads applied perpendicular to the plane of the trusses. This restraint and bracing is typically speci-
fied by the building designer.
La restricci6n o refuerzo de miembros secundarios especiffcada en un TDD es requerido para
resistir la deformation bajo fuerzas axiales causadas per cargas verticales aplicadas al truss. Re-
striccidn adicional y el aparato ortop6dico dentro del piano miembro de banda tambien puede ser
necesaria para transferir fuerzas laterales debidas at viento y / o cargas Sismicas aplicadas perpen-
dicular at piano de las cerchas. Esta restricci6n y arriostre es tipicamente provisto per el disenador
del edificio.
Diagonal brace to roof diaphragm blocking
Gable
frame
Horizontal /
L- reinforcement
Note: Top chord
sheathing not shown
for clarity.
Roof
diaphragm
blocking
Bottom chord
lateral restraint
Gable end/wall permanent diagonal bracing.
Locate in line with bottom chord permanent
CLR or as specified by the building designer.
Lj Some truss designers provide general design
tables and details to assist the building designer in
determiningthe bracing required to transfer lateral load deo wind and/or seismic forces from th
g q s u m e
gable end frame into the roof and/or ceiling diaphragm.
Algunos disenadores de trusses proveen tablas y detalles de diseno generates para asistir el
disenador del edificio en determiner at arriostre requerido para pasar cargas laterales debidas a
fuerzas de viento y/o fuerzas Sismicas del armaz6n hastial at diafragma del techo.
Gable Lnd Frames and Sloped Bottom Chords
Armazones Nastiales Y Cuerdas Inferiores Pendientes
0 The gable end frame should always match the profile of the adjacent trusses to permit installation
of proper bottom chord plane restraint & bracing unless special bracing is designed to support the
end wall.
EI armaz6n hastial siempre dabs encajar el peel de los trusses contiguous para permitir la insta-
laci6n de restricci6n y arriostre apropiada de la cuerda inferior a menos qua arriostre especial es
disenado para soportar la pared de extreme.
Bottom
chord
plane
5tampke of raked gable end wall
(wilh scissors gab'e end frame)
A@- ,' rL9K, Using a Oat bottom chord gable end frame with adjacent trusses that have sloped
bottom chords is prohibited by some building codes as adequate bracing of this condition is dif-
ficult and sometimes impossible. Special end wall bracing design considerations are required by
the building designer if the gable end frame profile does not match the adjacent trusses.
y.^'meq EI use de un armaz6n hastial de la cuerda inferior con trusses contiguos cuales
tienen cuerdas inferiores pendientes es prohibido per algunos c6digos de ediffcios porque ar-
riostre adecuado de esti condici6n es dificil y a veces imposible. Consideraciones especiales de
diseno para el arriostre de la pared de extreme son requeridos per at disenador del edificio si el
peel del armaz6n hastial no hacejuego con los trusses contiguos.
Permanent Bracing for Special Conditions
Arriostre Permanente Para Conditions Especiales
Sway Bracing—Arriostre de Sway' }�
0✓
"Sway" bracing is installed at the discretion of the building
designer to help stab'I'ze the truss system and minimize
C
.'
the lateral movement due to wind and seismic loads.
Arriostre de "sway" esti instalado per la discreci6n del
disenador del edificio para ayudar en estabilizar el sistema
de trusses y para minimizar el movimiento lateral debido a
cargas de viento y cargos slsmicas.
n Sway bracing installed continuously across the building
also serves to distribute gravity loads between trusses of
varying stiffness.
Arriostre de "sway" que es instatada continuadamente at traves del edificio tambien es usado para
distdbuir las cargas de gravedad entre trusses de rigidez variando.
Permanent RestraintirBracing for the Top Chord in a Piggyback Assembly
Restriccidn/Arriostre Permanente para la Cuerda Superior en un Ensamblaje de Piggyback
Provide restraint and bracing by: Repeat diagonal
• using rows of minimum 42 stress -graded bracing (red) at 10'
lumber CLR and diagonal bracing, or (3 m) intervals, or as
• connecting the CLR into the roof diaphragm, specified.
or
• adding structural sheathing or bracing l
frames, or
• some other equivalent means.
Provee restricci6n y arriostre por:
usando fi/as de 4x2 CLR de madera grad-
uada per esfuerzo y arriostre diagonal, 0
• conectando el CLR at diafragma del echo, o
• anadiendo entablado estructural o arm
zanes de arriostre, o
algunos otros metodos equivalentes
CLR (gash)
at 5 the spac-
ing specified
on the truss
design
drawing
Refer to the TDD for the maximum assumed spacing between rows of lateral restraint (e.g. purlins)
attached to the top chord of the supporting truss.
Consulte el TDD para el espaciamiento maximo supuesto para sujetar la restricci6n lateral
(p. ej., vigas) a la cuerda superior del truss Cap
soportante. trusses
The TDD provides the assumed thickness of the
restraint and minimum connection requirements CLR required only
between the cap and the supporting truss or Ae if bracing frame or
restraint. / structuralsheathing
intermit
EI TDD proves el s d er supuesto de restric entre � is installed intermit -
cion ylos requisites de nnexion minimus entre tenlly
la capa y el truss soportante o la restricci6n. Bracing frame
or structural
�✓� If diagonal bracing is used to restrain the t— sheathing
CLR(s), repeat at 10'(3 m) intervals, or as Supporting
specified in the construction documents. I 'I'' trusses
Si arriostre diagonal es usado para restringir
el/los CLR(s), repita an intervalos de 10 pies
o tomo especificado en los documentos de --
construcci6n.
To view a non -printing PDF of this document, visit sbcindustry.com/153.
Para ver un PDF de este documento que no se puede imprimir, visita sbcindustry.com/b3.
S3C
WIT
r:F}1'ilI:IWJ xvoorxuuwuxa TRUSS PLATE INSTITUTE
6300 Enterprise Lane • Madison, WI 53719 218 N. Lee St., Ste. 312 • Alexandria, VA 22314
608-274AB49 • sbundustry.com 703-683-1010 • tpinst.org
B3WEBIU17 160217
Start
42-00-00
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COMPOSITION ROOF
ROOF PITCH: 4/12
OVERHANG: 2-00-00
TOP CHORD LIVE LOAD: 25 psf
TOP CHORD DEAD LOAD: 8 psf
BOTTOM CHORD DEAD LOAD: 7 psf
WIND LOAD & EXPOSURE: Vult 126 mph - Exp. B
TRUSS TO PLATE CONNECTION BY OTHERS
LAYOUT NOT TO SCALE
GENERAL NOTES
THIS DRAWING PROVIDES TRUSS DIMENSIONS AND LOCATIONS ONLY
AND SHALL ALWAYS BE USED IN CONJUNCTION WITH APPROVED
ARCHITECTUAL AND STRUCTURAL DRAWINGS
2
THE GENERAL CONTRATOR SHALL VERIFY ALL DIMENSIONS IN
WRITING AND BE RESPONSABLE FOR REPORTING ANY
DISCREPANCIES TO THE MANUFACTURER PRIOR TO FABRICATION.
3.
TRUSSES ARE EXTREMELY FLEXIBLE UNTIL ALL FORMS OF BRACING
ARE IN PLACE AND FASTENED. FOR ERRECTION AND BRACING
RECOMMENDATIONS, SEE THE ENCLOSED BCSI-81 & BCSI-83
SUMMARY SHEETS.
BEFORE INSTALLING TRUSSES, REFER TO INDIVIDUAL ENGINEERED
TRUSS DRAWINGS. LOCATE THE TOP AND BOTTOM CHORDS, AND
PLACE TRUSSES ACCORDINGLY. BRACE INDICATED ON THE
ENGINEERED TRUSS DRAWINGS IS MANDITORY AND PERMANENT.
5
FOLLOW PROJECT ENGINEERS / DESIGNERS INSTRUCTION ON TIE
DOWNS, NAILING AND OVERALL SWAY BRACING.
6
DO NOT CUT, DRILL, OR ALTER TRUSSES IN ANY WAY WITHOUT
WRITTEN AUTHORIZATION FROM THE TRUSSCO & BUILDING SUPPLY.
THE CONTRACTOR ASSUMES SOLE RESPONSABILITY OF ANY
ALTERATION OF A TRUSS WITHOUT WRITTEN APPROVAL FROM THE
TRUSSCO & BUILDING SUPPLY.
SUPERIMPOSED LOADS:
A. NO MATERIAL SHALL BE STORED ON A TRUSS SYSTEM UNTIL ALL
PERMANENT BRACING HAS BEEN COMPLETELY INSTALLED.
B. CONCENTRATED & UNIFORM LOADS DUE TO CONSTRUCTION
AND/OR OCCUPANCY SHALL NOT EXCEED THOSE SPECIFIED BY
THE TRUSS DESIGNER AS TO WEIGHT AND LOCATION.
C. LOADS SHALL NOT BE SUSPENED FROM THE BOTTOM CHORDS OF
TRUSSES UNLESS THE TRUSSES HAVE BEEN DESIGNED TO
SAFELY CARRY THE APPLIED LOAD.
IMPORTANT:
1. SEE BCSI-B1 SUMMARY SHEET FOR HANDLING, INSTALLING,
RESTRAINING AND TEMPORARY BRACING REQUIREMENTS.
2. SEE ENGINEERED TRUSS DRAWINGS AND SUPPLIED BCSI-B3
FOR PERMANENT BRACING REQUIREMENTS
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