Allowable Building Height and Area Calculations Using Software
Transcript of Allowable Building Height and Area Calculations Using Software
Presented by:Presented by:
Ara Sargsyan, PE, CBO, LEED APAra Sargsyan, PE, CBO, LEED AP
Oakland, CA. January 29, 2013Oakland, CA. January 29, 2013
Allowable Building Height and Allowable Building Height and Area Calculations Using Area Calculations Using Software ApplicationsSoftware Applications
“The Wood Products Council” is a Registered Provider with The�American�Institute�of�Architects�Continuing�Education�Systems�(AIA/CES). Credit(s) earned on completion of this program will be reported to AIA/CES for AIA members. Certificates of Completion for both AIA members and non-AIA members are available upon request.
This program is registered with AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product.
Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.
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Disclaimer
The training materials and opinions presented at this workshop do not constitute official views of the author's employer and should not be used as such. Anyone who wants an official ruling by the Building Official should contact the local Building Department.
IBC is © by International Code Council
Learning�Objectives
•Learn how to save time in calculating grade plane for any topography.•Understand how to optimize design values for all occupancy groups and types of construction using a single application.•Evaluate methods for calculating front increases in a manner that will save time on building design and plan review. •Explain how to calculate allowable floor area, number of stories and height for a mid-rise building.
This�Session�Presents:This�Session�Presents:
•• Software�application�that�checks�and�Software�application�that�checks�and�analyses�Building�Height�and�Area�in�analyses�Building�Height�and�Area�in�compliance�with�the�2007/2010�CBC�compliance�with�the�2007/2010�CBC�
•• The�purpose�and�configuration�of�the�The�purpose�and�configuration�of�the�software�applicationsoftware�application
•• Examples�of�mixed�use,�multi�story�building��Examples�of�mixed�use,�multi�story�building��Height�and�Area�analysisHeight�and�Area�analysis
2007/2010�CBC�Building�Height�&�Area�Calculator
CHA�Ͳ CHA
2007/2010�CBC�Building�Height�&�Area�Calculator
2007/2010�CBC�Building�Height�&�Area�Calculator
What�does�ChaWhat�does�ChaͲͲCha�do?Cha�do?
•• Checks�and�analyses�Building�Height�and�Area�in�Checks�and�analyses�Building�Height�and�Area�in�compliance�with�the�2007�&�2010�CBC�for�compliance�with�the�2007�&�2010�CBC�for�buildings�up�to�6�stories,�with�up�to�4�occupancy�buildings�up�to�6�stories,�with�up�to�4�occupancy�groups�at�each�level.�groups�at�each�level.�
•• Optimizes�design�values�for�all�occupancy�Optimizes�design�values�for�all�occupancy�groups�and�types�of�construction�using�single�groups�and�types�of�construction�using�single�application�application�
•• Calculates�Frontage�increase�(Calculates�Frontage�increase�(I I ff))
•• Calculates�Grade�plane�elevation�for�any�Calculates�Grade�plane�elevation�for�any�topographytopography
•• Select�proposed�Type�of�constructionSelect�proposed�Type�of�construction–– ChaChaͲͲCha�will�show�max.�permitted�height�for�the�Cha�will�show�max.�permitted�height�for�the�building�without�sprinklers�per�Table�503building�without�sprinklers�per�Table�503
•• Input�proposed�Building�Height�(ft)�Input�proposed�Building�Height�(ft)�•• Input�proposed�number�of�stories�(6�max)�Input�proposed�number�of�stories�(6�max)�•• If�applicable,�check�the�box�for�sprinklers�If�applicable,�check�the�box�for�sprinklers�throughout�per�903.3.1.1throughout�per�903.3.1.1
–– No�substitution�for�1No�substitution�for�1ͲͲhr�construction�hr�construction�
•• If�applicable,�input�(If�applicable,�input�(I I ff)�value)�value•• Select�Occupancy�Groups�(4�per�level)Select�Occupancy�Groups�(4�per�level)•• Input�corresponding�areas�(sq.�ft.)Input�corresponding�areas�(sq.�ft.)
The�ChaThe�ChaͲͲCha�stepsCha�steps
ChaChaͲͲCha�will�check:Cha�will�check:
Allowable�height,�number�of�stories�Allowable�height,�number�of�stories�and�the�area�forand�the�area�for::•• Each�Occupancy�group�at�each�floorEach�Occupancy�group�at�each�floor
•• Each�floorEach�floor
•• Each�Occupancy�group�throughout�Entire�Each�Occupancy�group�throughout�Entire�buildingbuilding
•• Overall�buildingOverall�building
Abbreviations�used�in�ChaAbbreviations�used�in�ChaͲͲChaCha
•• CHA�CHA�ͲͲCheck�Height�and�AreaCheck�Height�and�Area
•• NP�NP�ͲͲNot�PermittedNot�Permitted
•• OL�OL�ͲͲOver�Permitted�LimitOver�Permitted�Limit
•• SPA�SPA�ͲͲSprinklers�used�for�Area�increaseSprinklers�used�for�Area�increase
•• SPH�SPH�ͲͲSprinklers�used�for�Height�increaseSprinklers�used�for�Height�increase
•• SPS�SPS�ͲͲSprinklers�used�for�Story�increaseSprinklers�used�for�Story�increase
•• UL�UL�ͲͲUnlimitedUnlimited
Code�Sections�not�covered�by�ChaCode�Sections�not�covered�by�ChaͲͲChaCha
•• 503.1.1�(Special�industrial�occupancies)�503.1.1�(Special�industrial�occupancies)�
•• Footnotes�b,�c,�d,�and�e�of�Table�503�Footnotes�b,�c,�d,�and�e�of�Table�503�
•• 504.3�(Roof�structures)�504.3�(Roof�structures)�
•• 505�(Mezzanines)�505�(Mezzanines)�
•• 506.1.1�(Basements�506.1.1�(Basements�–– 2007�CBC�only)�2007�CBC�only)�
•• 507�(Unlimited�Area�Buildings)507�(Unlimited�Area�Buildings)–– for�Frontage�increase�(If),�Chafor�Frontage�increase�(If),�ChaͲͲCha�considers�the�Cha�considers�the�Exception�under�Sec.�506.2.1)Exception�under�Sec.�506.2.1)
•• 509�(Special�provisions)�509�(Special�provisions)�
Assumptions�taken�by�ChaAssumptions�taken�by�ChaͲͲChaCha
•• Sec.�504.2�Exceptions:�Fire�area�with�specific�Sec.�504.2�Exceptions:�Fire�area�with�specific�occupancy�group�is�assumed�to�be�the�entire�occupancy�group�is�assumed�to�be�the�entire�floor�that�accommodates�the�occupancy�floor�that�accommodates�the�occupancy�group.(2007�CBC�only)group.(2007�CBC�only)
•• Sec.�508:�All�mixed�occupancies�are�assumed�Sec.�508:�All�mixed�occupancies�are�assumed�separated�(508.3.3).�For�non�separated�separated�(508.3.3).�For�non�separated�occupancies�use�the�most�restrictive�allowances�occupancies�use�the�most�restrictive�allowances�(508.3.2.2)(508.3.2.2)
1616
Determining the Grade PlaneDetermining the Grade PlaneGrade Plane Elevation (GPE)Grade Plane Elevation (GPE)
1717
1818South Ave (60')
Wes
t St
(60'
)
120'
New Building
60'
60'50' 30
'
20'
10'
70'
20'
10' 40'
30'
10'
30'
10'
60'
20'20' 40'
Existing Building
P.L.
P.L.
P.L.
P.L.
NN
1111
11 22
1414
55
44
33
1010
66
99
7788
12121313
Building�Height�&�Area�CalculatorͲ Example
IIff = 0.35= 0.35
W= 30 ftP= 1,000 ftF= 600 ft
IIff = [F/P = [F/P –– 0.25]W/300.25]W/30
Footprint= 35,000 sq.ft
Building�Height�&�Area�CalculatorͲ Example
53,000 1
2
B
3
4
53,000
46,000
49,000
17,490
17,490
84,000
16,170
13,800
Sec. 505.1 Sec. 505.1
Sec. 506.4 Exp Sec. 506.4 Exp
349,950�sq.�ft.
Other�Software�ApplicationsOther�Software�Applications……
•• ChaChaͲͲCha�for�2006,�2009�&�2012�IBCCha�for�2006,�2009�&�2012�IBC
•• Plumbing�Fixtures�Calculators�for:Plumbing�Fixtures�Calculators�for:–– 2007�&�2010�CBC/CPC2007�&�2010�CBC/CPC
–– 2006�&�2009�IBC/IPC2006�&�2009�IBC/IPC
–– 2007�FBC2007�FBCͲͲ Plumbing�(Florida)Plumbing�(Florida)
•• Sound�Transmission�Class�(STC)Sound�Transmission�Class�(STC)
•• etcetc……
Questions?
This�concludes�The�American�Institute�of�Architects�Continuing�Education�Systems�Course
Ara�Sargsyan,�PE,�CBO,�LEED�AP
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