Code Wind Loading Analysis (ASCE 7-05)

"ASCE705W" --- ASCE 7-05 7- 05 CODE WIND ANALYSIS ANALYSIS PROGRAM Program Descripio! "ASCE705W" is a spreadsheet program written in MS-Excel for the purpose of wind loading analsis for !uildings and structures per the ASCE 7-05 Code Specificall# Specificall# wind pressure coefficients and related and re$uired parameters are selected or calculated in order to compute the net design wind pressures %his program is a wor&!oo& consisting of nine '() wor&sheets# descri!ed as follows*

Wor#s$ee Name

Descripio!

+oc Simplified MW1S '2ow-1ise) MW1S 'An 3t) Wall C4C 1oof C4C Stac&s 4 %an&s 6pen Structures 'no roof) Wind Map

%his documentation sheet Analsis using simplified method for low-rise !uildings with h , .0/ Main Wind-orce 1esisting Sstem for low-rise !uildings with h , .0/ Main Wind-orce 1esisting Sstem for !uildings of an height Analsis of wall Components and Cladding Analsis of roof Components and Cladding Analsis of cantileered chimnes# stac&s# and ertical tan&s Analsis of open structures without roofs asic wind speed map 'igure .-8 of ASCE 7-05 Code)

Program Ass%mpio!s a!& Limiaio!s 8 Wor&sheet for "Simplified" "Simplified" analsis is applica!le for low-rise !uildings meeting the criteria of Section Section .98 : ;n the wor&sheet for Simplified analsis# analsis# the design MW1S wind load is calculated for each direction %he design MW1S MW1S load is assumed assumed to !e the total wind wind load on either the width width or the length of the !uilding respectiel < Wor&sheet for "MW1S '2ow-1ise)" '2ow-1ise)" is applica!le for low-rise !uildings as defined in Section .: 9 Wor&sheets for "MW1S "MW1S 'An 3t)"# "Wall C4C"# and "1oof C4C" are applica!le for !uildings with mean roof heights of up to 500 feet

"ASCE705Wxls" Hrogram Jersion 88

WIND LOADING ANALYSIS ANALYSIS - MW'RS a!& Compo!e!s(C)a&&i!g Per ASCE ASCE 7-05 Co&e ,or Lo4-Rise E!c)ose& 6%i)&i!gs 6%i)&i!gs 4i$ $ 8 .09 a!& Roo, *si!g Me$o& + Simp)i,ie& Proce&%re Secio! ./1 Ko! Iame* Su!Lect* Ko! Ium!er* 6riginator* Chec&er* I!p% Daa Wind Speed# J  (0 mph 'Wind Map# igure .-8) ldg Classification  '%a!le 8-8 6ccupanc Categor) II Exposure Categor   'Sect .5.) 1idge 3eight# hr  8(00 ft 'hr N he) Eae 3eight# he  8500 ft 'he , hr) uilding Width# W  9800 ft 'Iormal to uilding 1idge) uilding 2ength# 2  .800 ft 'Harallel to uilding 1idge) 1oof %pe  Monoslope 'Ba!le or Monoslope) %opo actor# O=t  800 'Sect .57 4 igure .-9) Wall C4C Iame  Wall 'Birt# Siding# Wall# or astener) Wall C4C Eff Area  7500 ft: 'for ComponentFCladding) 1oof C4C Iame  Koist 'Hurlin# Koist# +ec&ing# or astener) 1oof C4C Eff Area  :0500 ft: 'for ComponentFCladding) 6erhang Eff Area  000 ft: 'for ComponentFCladding) 3urricane 1egionP I

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hr

qo h,.0>

he Ba

Res%)i!g Parameers a!& Ne Desig! Press%res W 'or 2ra!s3erse Direcio! 'wind perpendicular to ridge) E)e3aio! 1oof Angle# q  557 deg ft 'h  he for q , 80 deg) Mean 1oof 3t# h  8500 AdLustment actor# actor# l  8000 'adLusts for height and exposure) ;mportance actor# I  800 '%a!le .-8) Wall 4 1oof End Qone Width# a  9800 ft 'use* ":Da" for MW1S# "a" for C4C) 2ra!s3erse 2ra!s3erse MW'RS Ne Press%res ps 2ocation +irection Qone

ps,1

Mono Hu Ko +ec ast B Sid W ast

ps  lDO=tDIDps<0

2oad 2oad Case Case 8 2oad 2oad Case Case : 'ps<0 from ig .-:)


WIND LOADING ANALYSIS ANALYSIS - MW'RS a!& Compo!e!s(C)a&&i!g Per ASCE ASCE 7-05 Co&e ,or Lo4-Rise E!c)ose& 6%i)&i!gs 6%i)&i!gs 4i$ $ 8 .09 a!& Roo, *si!g Me$o& + Simp)i,ie& Proce&%re Secio! ./1 Ko! Iame* Su!Lect* Ko! Ium!er* 6riginator* Chec&er* I!p% Daa Wind Speed# J  (0 mph 'Wind Map# igure .-8) ldg Classification  '%a!le 8-8 6ccupanc Categor) II Exposure Categor   'Sect .5.) 1idge 3eight# hr  8(00 ft 'hr N he) Eae 3eight# he  8500 ft 'he , hr) uilding Width# W  9800 ft 'Iormal to uilding 1idge) uilding 2ength# 2  .800 ft 'Harallel to uilding 1idge) 1oof %pe  Monoslope 'Ba!le or Monoslope) %opo actor# O=t  800 'Sect .57 4 igure .-9) Wall C4C Iame  Wall 'Birt# Siding# Wall# or astener) Wall C4C Eff Area  7500 ft: 'for ComponentFCladding) 1oof C4C Iame  Koist 'Hurlin# Koist# +ec&ing# or astener) 1oof C4C Eff Area  :0500 ft: 'for ComponentFCladding) 6erhang Eff Area  000 ft: 'for ComponentFCladding) 3urricane 1egionP I

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qo h,.0>

he Ba

Res%)i!g Parameers a!& Ne Desig! Press%res W 'or 2ra!s3erse Direcio! 'wind perpendicular to ridge) E)e3aio! 1oof Angle# q  557 deg ft 'h  he for q , 80 deg) Mean 1oof 3t# h  8500 AdLustment actor# actor# l  8000 'adLusts for height and exposure) ;mportance actor# I  800 '%a!le .-8) Wall 4 1oof End Qone Width# a  9800 ft 'use* ":Da" for MW1S# "a" for C4C) 2ra!s3erse 2ra!s3erse MW'RS Ne Press%res ps 2ocation +irection Qone

ps,1

Mono Hu Ko +ec ast B Sid W ast

ps  lDO=tDIDps<0

2oad 2oad Case Case 8 2oad 2oad Case Case : 'ps<0 from ig .-:)

"ASCE705Wxls" Hrogram Jersion 88 3  in interi terio or =on =one e of le leeward ward roo roof

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2oa) Desig! MW'RS :ori;o!a) Loa& #ips1 2ra!s3erse Lo!gi%&i!a) 2oad Case 8

2oad Case :

Min 2oad

2oad Case 8

2oad Case :

Min 2oad

(7 --885( 78: --.(7 ormulas* Hh'%rans)  ''HcD'2-9Da)HaD9Da)Dhe'HdD'2-9Da)H!D9Da)D'hr-he))F8000 Hh'%rans)'min)  H'min)D2DhrF8000 # where* H'min)  800 psf on proLected area Hh'2ong)  'HaD'hrhe)F:D9DaHcD''hrhe)F:DW-'hrhe)F:D9Da))F8000 Hh'2ong)'min)  H'min)DWD'hrhe)F:F8000 # where* H'min)  800 psf on full area Compo!e!s < C)a&&i!g Ne Press%res p s ps,1 ;tem 2ocation Qone Hos ') 9 8:70 Wall 9  interior =one of wall 5 8:70 5  end =one of wall 8 970 8  interior =one of roof : 970 1oof Koist :  end =one of roof < 970 <  corner =one of roof : --1oof 6erhang :  end =one of oh < --<  corner =one of oh

pnet  lDO=tDIDpnet<0

Ieg '-) -8<(5 -850 -8<<0 -850 -850 -----

'pnet<0 from ig .-<)

Noes 8 or Method 8* Simplified Hrocedure of Section .9 to !e used for an enclosed low-rise !uilding to determine the design wind loads# all of the following eight conditions of .988 must !e met* a uilding is a simple diaphragm !uilding# in which wind loads are transmitted through floor and roof diaphragms to the ertical Main Wind-orce 1esisting Sstem 'MW1S) ! uilding is a low-rise !uilding where mean roof height# h , .0 ft# and h , min of 2 or W c uilding is enclosed and conforms to wind-!orne de!ris proisions of Section .5(< d uilding is a regular shaped !uilding# haing no unusual geometrical irregularit e uilding is not classified as a flexi!le !uilding so it is considered "rigid" f uilding is not su!Lect to across-wind loading# ortex shedding# etc g uilding has an approximatel smmetrical cross section in each direction with either a flat roof# or ga!le roof with q , 95 degrees h uilding is exempted from torsional load cases or torsional load cases do not control an of the MW1Ss of the !uilding

"ASCE705Wxls" Hrogram Jersion 88 'continued)


MW'RS - Wi!& =o!es

asic



WIND LOADING ANALYSIS - Mai! Wi!&-'orce Resisi!g S>sem Per ASCE 7-05 Co&e ,or E!c)ose& or Paria))> E!c)ose& 6%i)&i!gs *si!g Me$o& ? A!a)>ica) Proce&%re Secio! ./51 ,or Lo4-Rise 6%i)&i!gs Ko! Iame* Su!Lect* Ko! Ium!er* 6riginator* Chec&er*

I II I

I!p% Daa Wind Speed# J  ldg Classification  Exposure Categor  1idge 3eight# hr  Eae 3eight# he  uilding Width  uilding 2ength  1oof %pe  %opo actor# O=t  +irect actor# Od  EnclosedP 'RFI) 3urricane 1egionP

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C 5<<< :000 :0000 :5000 Ba!le

800 05 R R

mph 'Wind Map# igure .-8) '%a!le 8-8 6ccupanc Cat) 'Sect .5.) ft 'hr N he) ft 'he , hr) ft 'Iormal to uilding 1idge) ft 'Harallel to uilding 1idge) 'Ba!le or Monoslope) 'Sect .57 4 igure .-9) '%a!le .-9) 'Sect .: 4 igure .-5)

Ba

Wind

 Mono

2

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hr

qo h,.0>

Res%)i!g Parameers a!& Coe,,icie!s 1oof Angle# q  Mean 1oof 3t# h 

89< <..7

deg ft 'h  'hrhe)F:# for angle N80 deg)

Chec& Criteria for a 2ow-1ise uilding* 8 ;s h , .0> P Res# 6O

: ;s h , 2esser of 2 or P

External Hressure Coeff>s# BCpf 'ig .-80)* 'or alues# see following wind load ta!ulations)

Wall Qone .  Wall Qone 8E  1oof Qone :E  1oof Qone
2

he 05D2  :5Dhe  Gse 

E)e3aio! 2esser of 2 or * Res# 6O 08D'2 or )* Compare to 09Dh* Compare to 09D'2# )* Compare to <>*

"ASCE705Wxls" Hrogram Jersion 88 MW'RS Wi!& Loa& ,or 2ra!s3erse Direcio! Surface BCpf p  Iet Hressures 'psf) 'wF BCpi) 'wF -BCpi) Qone 8 05: .0 8:5 Qone : -0.( -8578 -(:8 Qone < -097 -8878 -5:8 Qone 9 -09: -8075 -9:5 Qone 5 -095 -88< -9 Qone . -095 -88< -9 Qone 8E 07 809 87<9 Qone :E -807 -::57 -8.07 Qone
MW'RS Wi!& Loa& ,or Lo!gi%&i!a) Direcio! Surface DBCpf p  Iet Hressures 'psf) 'wF BCpi) 'wF -BCpi) Qone 8 090 <(7 8097 Qone : -0.( -8578 -(:8 Qone < -0<7 -((< -<9< Qone 9 -0:( -9( -8(( Qone 5 -095 -88< -9 Qone . -095 -88< -9 Qone 8E 0.8 777 89:7 Qone :E -807 -::57 -8.07 Qone
DIote* Gse roof angle q  0 degrees for 2ongitudinal +irection or %rans when BCpf is neg in Qones :F:E* or 2ong when BCpf is neg in Qones :F:E* Qones :F:E dist  5000 ft Qones :F:E dist  5000 ft 1emainder of roof Qones :F:E extending to ridge li ne shall use roof Qones
MW'RS Wi!& Loa& ,or Lo!g/ 2orsio!a) Case Surface BCpf p  Iet Hressure 'psf) 'wF BCpi) 'wF -BCpi) Qone 8% --0(( :.: Qone :% ---<(< -:<0 Qone <% ---:9 -0. Qone 9% ---:8: -050

Iotes* 8 or %ranserse# 2ongitudinal# and %orsional Cases* Qone 8 is windward wall for interior =one Qone 8E is windward wall for end =one Qone : is windward roof for interior =one Qone :E is windward roof for end =one Qone < is leeward roof for interior =one Qone
"ASCE705Wxls" Hrogram Jersion 88 Lo4-Rise 6%i)&i!gs $ 8 .09


WIND LOADING ANALYSIS - Mai! Wi!&-'orce Resisi!g S>sem Per ASCE 7-05 Co&e ,or E!c)ose& or Paria))> E!c)ose& 6%i)&i!gs *si!g Me$o& ? A!a)>ica) Proce&%re Secio! ./51 , or 6%i)&i!gs o, A!> :eig$ Ko! Iame* Su!Lect* Ko! Ium!er* 6riginator* Chec&er*

Har I I

I!p% Daa

II I

Wind +irection  Wind Speed# J  ldg Classification  Exposure Categor  1idge 3eight# hr  Eae 3eight# he  uilding Width  uilding 2ength  1oof %pe  %opo actor# O=t  +irect actor# Od  EnclosedP 'RFI) 3urricane 1egionP +amping 1atio# b  Heriod Coef# Ct 

Iormal 8:0 II

 85700 85700 80000 :0000 Monoslope 800 05 R I 00<0 00:00

'Iormal or Harallel to !uilding ridge) mph 'Wind Map# igure .-8)

Wind

'%a!le 8-8 6ccupanc Cat) 'Sect .5.) ft 'hr N he) ft 'he , hr) ft 'Iormal to uilding 1idge) ft 'Harallel to uilding 1idge) 'Ba!le or Monoslope) 'Sect .57 4 igure .-9) '%a!le .-9) 'Sect .: 4 igure .-5) 'Suggested 1ange  0080-0070) 'Suggested 1ange  00:0-00<5)



Ba Mono 2

or hF2,0:5* or hF205* or hF2N80* actual hF2  Gse 1oof Cp 

P)a!

qo hr

h he

'Assume* %  CtDh'
Res%)i!g Parameers a!& Coe,,icie!s 1oof Angle# q  Mean 1oof 3t# h  Windward Wall Cp  2eeward Wall Cp 

000 85700 00 -050

deg ft 'h  he# for roof angle ,80 deg) 'ig .-.) 'ig .-.)

2

E)e3aio! 2  800 ft   :00 ft

"ASCE705Wxls" Hrogram Jersion 88 Norma) o Ri&ge Wi!& Loa& 2a@%)aio! ,or MW'RS - 6%i)&i!gs o, A!> :eig$ Surface = O= $= Cp p  Iet +esign Hress 'psf) 'ft) 'psf) 'wF BCpi) 'wF -BCpi) Windward Wall 0 057 808 00 595 88< 8500 057 808 00 595 88< :000 0.: 8(55 00 .9. 8(89 :500 0.7 :09 00 7<0 8(( <000 070 :8(5 00 0< :078 <500 07< ::(9 00 . :8<. 9000 07. :<< 00 (:. :8(9 9500 07( :9.5 00 (0 ::9 5000 08 :590 00 80:( ::(7 5500 0< :.80 00 8075 :<9< .000 05 :.7. 00 888 :<. 7000 0( :7(7 00 88(7 :9.5 000 0(< :(05 00 8:. :5<. (000 0(. <005 00 8<<< :.08 80000 0(( <0(7 00 8<(< :..8 8:000 809 <:.: 00 8508 :770 89000 80( <90( 00 85( :.. or =  hr* 85700 88: <5:< 00 8.7: :(90

or =  he* or =  h* 2eeward Wall

85700 85700 All

88: 88:

<5:< <5:<

00 00 -050

8.7: 8.7: -:075

:(90 :(90 -07


Deermi!aio! o, G%s E,,ec 'acor G ;s uilding lexi!leP

Io

f N8 3=

+ Simplified Method for 1igid uilding B 050 Harameters Gsed in oth ;tem : and ;tem < Calculations 'from %a!le .-:)* a  089< !  09 a'!ar)  0:50 !'!ar)  095 c 0<0 l  <:0 ft e'!ar)  0<<< ='min)  <0 ft Calculated Harameters Gsed in oth 1igid andFor lexi!le uilding Calculations* ='!ar)  (9:0  0.Dh # !ut not , ='min) # ft ;='!ar)  0:5:  cD'<
Case +* ull design wind pressure acting on the proLected area perpendicular to each principal axis of the structure# considered separatel along each principal axis


WIND LOADING ANALYSIS - Wa)) Compo!e!s a!& C)a&&i!g

Ko! Iame* Ko! Ium!er*

Per ASCE 7-05 Co&e ,or 6%i)&i!gs o, A!> :eig$ *si!g Me$o& ? A!a)>ica) Proce&%re Secio! ./51 Su!Lect* 6riginator*

I

Chec&er*

II I

I!p% Daa Wind Speed# J  ldg Classification  Exposure Categor  1idge 3eight# hr  Eae 3eight# he  uilding Width  uilding 2ength  1oof %pe  %opo actor# O=t  +irect actor# Od  EnclosedP 'RFI) 3urricane 1egionP Component Iame  Effectie Area# Ae 

(0 II

C 5<<< :000 :0000 :5000 Ba!le

800 05 R I Birt :0

mph 'Wind Map# igure .-8) '%a!le 8-8 6ccupanc Categor) 'Sect .5.) ft 'hr N he) ft 'he , hr) ft 'Iormal to uilding 1idge) ft 'Harallel to uilding 1idge) 'Ba!le or Monoslope) 'Sect .57 4 igure .-9) '%a!le .-9) 'Sect .: 4 igure .-5) 'Birt# Siding# Wall# or astener) ft: 'Area %ri!utar to C4C)

Ba Mono

2

P)a!

hr


89< <..7

deg ft 'h  'hrhe)F:# for roof angle N80 deg)

Wall External Hressure Coefficients# BCp* BCp Qone 9 Hos  077 'ig .-88A) BCp Qone 5 Hos  077 'ig .-88A)

B Sid W ast Compare to <>* Gse >a> 

qo h

he  BCpi Coef 'H;H) -BCpi Coef 'I;H)  2

E)e3aio!

a  =g  Oh  ; $h 


or =  hr*

Wi!& Loa& 2a@%)aio! ,or Wa)) Compo!e!s < C)a&&i!g = Oh $h p  Iet +esign Hressures 'psf) 'ft) 'psf) Qone 9 ') Qone 9 '-) Qone 5 ') Qone 5 '-) 0 80: 80. 8788 -8(8 8788 -:08< 8500 80: 80. 8788 -8(8 8788 -:08< :000 80: 80. 8788 -8(8 8788 -:08< :500 80: 80. 8788 -8(8 8788 -:08< <000 80: 80. 8788 -8(8 8788 -:08< <500 80: 80. 8788 -8(8 8788 -:08< 9000 80: 80. 8788 -8(8 8788 -:08< 9500 80: 80. 8788 -8(8 8788 -:08< 5000 80: 80. 8788 -8(8 8788 -:08< 5<<< 80: 80. 8788 -8(8 8788 -:08<

or =  he* or =  h*

:000 <. .7

Component Birt

80: 8 0:

80. 8 0.

8788 87 88

-8(8 -8 (8

8788 87 88

-:08< -:0 8<


Wa)) Compo!e!s a!& C)a&&i!g

Wa)) =o!es ,or 6%i)&i!gs 4i$ $ 8 .0 ,/


WIND LOADING ANALYSIS - Roo, Compo!e!s a!& C)a&&i!g Per ASCE 7-05 Co&e ,or 6)&gs/ o, A!> :eig$ 4i$ Ga@)e Roo, 8 5o or Mo!os)ope Roo, *si!g Me$o& ? A!a)>ica) Proce&%re Secio! ./51 Ko! Iame* Su!Lect* Ko! Ium!er* 6riginator* Chec&er*

8 o I II I

I!p% Daa Wind Speed# J  ldg Classification  Exposure Categor  1idge 3eight# hr  Eae 3eight# he  uilding Width  uilding 2ength  1oof %pe  %opo actor# O=t  +irect actor# Od  EnclosedP 'RFI) 3urricane 1egionP Component Iame  Effectie Area# Ae  6erhangsP 'RFI)

(0 II

C 5<<< :000 :0000 :5000 Ba!le

800 05 R I Koist :0 I

mph 'Wind Map# igure .-8) '%a!le 8-8 6ccupanc Categor) 'Sect .5.) ft 'hr N he) ft 'he , hr) ft 'Iormal to uilding 1idge) ft 'Harallel to uilding 1idge) 'Ba!le or Monoslope) 'Sect .57 4 igure .-9) '%a!le .-9) 'Sect .: 4 igure .-5) 'Hurlin# Koist# +ec&ing# or astener) ft: 'Area %ri!utar to C4C) 'if used# oerhangs on all sides)

Ba Mono

hr


89< <..7

deg ft 'h  'hrhe)F:# for roof angle N80 deg)

1oof External Hressure Coefficients# BCp* BCp Qone 8-< Hos  0<0 'ig .-88 thru .-88+)

Hu Ko 2 +ec P)a! ast or Qone 8#:#< Hos  or Qone 8 Ieg  o or Qone : Ieg  q orh Qone < Ieg  he  Gse Qone 8#:#< Hos Gse Qone 8 Ieg  2 Gse Qone : Ieg  Gse Qone < Ieg  E)e3aio!

ig>s .-88# .ig .-88* or Qone 8#:#< Hos  or Qone 8 Ieg 


or =  hr*

Wi!& Loa& 2a@%)aio! ,or Roo, Compo!e!s < C)a&&i!g = Oh $h p  Iet +esign Hressures 'psf) 'ft) 'psf) Qone 8#:#< ') Qone 8 '-) Qone : '-) Qone < '-) 0 80: 80. .7 -8770 -:9(: -<(<7 8500 80: 80. .7 -8770 -:9(: -<(<7 :000 80: 80. .7 -8770 -:9(: -<(<7 :500 80: 80. .7 -8770 -:9(: -<(<7 <000 80: 80. .7 -8770 -:9(: -<(<7 <500 80: 80. .7 -8770 -:9(: -<(<7 9000 80: 80. .7 -8770 -:9(: -<(<7 9500 80: 80. .7 -8770 -:9(: -<(<7 5000 80: 80. .7 -8770 -:9(: -<(<7 5<<< 80: 80. .7 -8770 -:9(: -<(<7

or =  he* or =  h*

:000 <. .7

Component Koist

80: 8 0:

80. 8 0.

.7  .7

-8770 -87 70

-:9(: -:9 (:

-<(<7 -<( <7


Roo, Compo!e!s a!& C)a&&i!g

8 7 &eg/

7 &eg/ 

8 ?7 &eg/

?7 &eg/ 

Roo, =o!es ,or 6%i)&i!gs 4i$ $ 8 .0 ,/ ,or Ga@)e Roo,s 8 5o a!& Mo!os)ope Roo,s 8 o1

8 5 &eg/


WIND LOADING ANALYSIS - C$im!e>s Sac#s a!& erica) 2a!#s Per ASCE 7-05 Co&e ,or Ca!i)e3ere& Sr%c%res C)assi,ie& as O$er Sr%c%res I

Ko! Iame* Ko! Ium!er*

Su!Lect* 6riginator*

I

Chec&er*

II I

I!p% Daa J Class  Exposure  O=t  h 3!  + ShapeP b  Ct  Od  Cf  3urricaneP

+

(0

mph 'Wind Map# igure .-8) '6ccupanc Categor form %a!le 8-8) 1o II  'Exposure Categor from Sect .5.) 3exa Wind h 800 '%opographic actor from Sect .57) S$ 000 ft '3eight of Stac&F%an& itself) Ior 000 ft '3t of Stac&F%an& ase A!oe Bround) +iag :000 ft '+iameter or Width of Surface Iormal to Wind) 3! N 0 Bround 1ound '1ound# 3exagonal# or S$uare) 0080 '+amping 1atio  0080-0070) E)e3aio! 0098: 'Heriod Coefficient  00:0-00<5) 0(5 '+irect actor# %a!le .-9) Wi!& Loa& 2a@%)aio! ,or Sac# ( 2a!# 0700 'orce Coef from ig .-:8) = O= $= p$=DBDCf $=DBDCfD+ I 'ft) 'psf) 'psf) 'l!Fft) 000 057 88<: 77. 855: Res%)i!g Parameers a!& Coe,,icie!s 500 057 88<: 77. 855: 8000 057 88<: 77. 855: ;f = , 85 then* O=  :08D'85F=g)':Fa) 8500 057 88<: 77. 855: ;f = N 85 then* O=  :08D'=F=g)':Fa) :000 0.: 8::( 9< 8.5 a  700 '%a!le .-:) :500 0.7 8<80 ( 87(. =g  8:00 '%a!le .-:) <000 070 8<0 (9. 8(: 800 '%a!le .-8) ';mport actor) <500 07< 899: (( 8(78 I  hF+  9000 9000 07. 89( 80:7 :0550 fre$# f  0(07 3= 'f , 8) lexi!le 9500 07( 8550 80.< :8:5< B 0(0 'Bust actor# Sect .5) 50 00 0 8 85 (7 80 (5 :8( 0<


Deermi!aio! o, G%s E,,ec 'acor G lexi!leP

Res

f , 8 3=

+ Simplified Method for 1igid Structure B IA Harameters Gsed in oth ;tem : and ;tem < Calculations 'from %a!le .-:)* a  089< !  09 '!ar)  a 0:50 !'!ar)  095 c 0<0 l  <:0 ft e'!ar)  0<<< ='min)  <0 ft Calculated Harameters Gsed in oth 1igid andFor lexi!le Structure Calculations* ='!ar)  900  0.Dh # !ut not , ='min) # ft ;='!ar)  0::  cD'<

WIND LOADING ANALYSIS - Ope! Sr%c%res 4i$o% Roo,s Per ASCE 7-05 Co&e *si!g Me$o& ? A!a)>ica) Proce&%re Secio! ./51 ,or O$er Sr%c%res o, A!> :eig$ Ko! Iame* Su!Lect* Ko! Ium!er* 6riginator* Chec&er*

I II I

I!p% Daa Res%)i!g Parameers a!& Coe,,icie!s Wind Speed# J  Class# 6cc Categor  Exposure Categor  %opo actor# O=t  3eight of Structure# h  Structure Width#   Structure 2ength# 2  +amping 1atio# b  Heriod Coefficient# Ct  +irect actor# Od  3urricane 1egionP

(0

mph

II

'%a!le 8-8)

C 800 8:500 85000 80000 0080 00:00 05 I

'Sect .5.) 'Sect .57) ft ft 'normal to wind) ft 'parallel to wind) '0080 to 0070)

;f = , 85 then* O=  :08D'85F=g)':F a) ;f = N 85 then* O=  :08D'=F=g)':Fa) a  (50 '%a!le .-:) =g  (00 '%a!le .-:) 800 '%a!le .-8) I  fre$# f  8<<7 3= 'f N8) 1igid B 050 'Bust actor# Sect .5)

'00:0 to 00<5)

Jelocit Hressure 'Sect .580# E$ .-85)* $=  000:5.DO=DO=tDOdDJ:DI Iet +esign Wind Hressures 'Sect .585)* p  $=DBDCf 'psf)# where >$=> is ealuated at height >=> of the centroid of proLected area

'%a!le .-9)

Iote* Her Code Section .898# design wind force for open !uildings and other structures shall not !e less than 80 psf multiplied ! the area# >Af># the area normal to wind direction

= 'ft)

0 85 :0 :5

Ope! Sr%c%re - Ne Desig! Wi!& Press%res p orce Coefficient# Cf O= $= $=DB 8:0 8.0 80 p p p 'psf) 'psf) 05 05 0(0 0(5

89(. 89(. 85(0 8...

8:7: 8:7: 8<58 898.

:00 p

'psf)

'psf)

'psf)

'psf)

85:. 85:. 8.:8 8.((

:0<5 :0<5 :8.: ::..

::( ::( :9<: :59(

:599 :599 :70: :<:


Deermi!aio! o, G%s E,,ec 'acor G lexi!leP

Io

f N8 3=

+ Simplified Method for 1igid Structure B 05 Harameters Gsed in oth ;tem : and ;tem < Calculations 'from %a!le .-:)* a  0805 !  800 a'!ar)  0859 !'!ar)  0.5 c 0:0 l  500 ft e'!ar)  0:00 ='min)  85 ft Calculated Harameters Gsed in oth 1igid andFor lexi!le Structure Calculations* ='!ar)  7500  0.Dh # !ut not , ='min) # ft ;='!ar)  0879  cD'<

O$er Sr%c%res - Me$o& ? 'ig%re .-?? 'orce Coe,,icie!s C, ')a-Si&e& Mem@ers

A)) :eig$s Ope! Sig!s < Laice 'rame4or#s Ro%!&e& Mem@ers DSFR2;1 8 ?/5 DSFR2;1  ?/5

, 08

:0

8:

0

08 to 0:(

8

8<

0(

0< to 07

8.

85

88

Iotes* 8 Signs with openings comprising <0V or more of the gross area are classified as open signs : %he calculation of the design wind forces shall !e !ased on the area of all exposed mem!ers and elements proLected on a plane normal to the wind direction orces shall !e assumed to act parallel to the wind direction < %he area >Af> consistent with these force coefficients is the solid area proLected normal to the wind direction 9 Iotation* e  ratio of solid area to gross area +  diameter of a tpical round mem!er# in feet $=  elocit pressure ealuated at height >=> a!oe ground in psf

O$er Sr%c%res - Me$o& ? 'ig%re .-? 'orce Coe,,icie!s C, Ope! Sr%c%res

A)) :eig$s 2r%sse& 2o4ers

'IG*RE .-+ 6asic Wi!& Spee&

'IG*RE .-+a Weser! G%), o, MeHico :%rrica!e Coas)i!e

'IG*RE .-+@ Easer! G%), < So%$easer! */S/ :%rrica!e Coas)i!e

Code Wind Loading Analysis (ASCE 7-05)

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