Viento

Company
Address City, State Phone other
CS09 Ver 10.01.10

JOB TITLE JOB NO. CALCULATED BY CHECKED BY

Example 6&7
SHEET NO. DATE DATE

www.struware.com

STRUCTURAL CALCULATIONS
FOR

Example 6&7 20' eave height using MWFRS all heights procedure 20' eave height using MWFRS < 60' procedure
Guide to Wind Load Procedures of ASCE 7-02

Company
Address City, State Phone other

JOBTITLE JOB NO. CALCULATED BY CHECKED BY

Example 6&7
SHEET NO. DATE DATE

www.struware.com

Code Search
Code:
ASCE 7 - 02

Occupancy:
Occupancy Group = B Business

Occupancy Category & Importance Factors:
Occupancy Category = Wind factor = Snow factor = Seismic factor = II 1.00 1.00 1.00

Type of Construction:
Fire Rating: Roof = Floor = 0.0 hr 0.0 hr

Building Geometry:
Roofangle (θ) Building length (L) Least width (B) Mean Roof Ht (h) Parapet ht above grd Minimum parapet ht 4.00 / 12 250.0 ft 200.0 ft 36.7 ft 0.0 ft 0.0 ft 18.4 deg

Live Loads:
Roof 0 to 200 sf: 20 psf 200 to 600 sf: 24 - 0.02Area, but not less than 12 psf over 600 sf: 12 psf

Floor Typical Floor 125 psf Walkways & elevated platforms (non exit way) 60 psf

Mechanical Stairs & Exitways Balcony/ Deck Partitions

125 psf 100 psf N/A

Company
Address City, State Phone other

JOB TITLE JOB NO. CALCULATED BY CHECKED BY

Example 6&7
SHEET NO. DATE DATE

Wind Loads :
Importance Factor Basic Wind speed Directionality (Kd) Exposure Category Enclosure Classif. Internal pressure Kh case 1 Kh case 2 Type of roof 1.00 90 mph 0.85 C Enclosed Building +/-0.18 1.025 1.025 GableTopographic Factor (Kzt) Topography Hill Height (H) Half Hill Length (Lh) Actual H/Lh = Use H/Lh = Modified Lh = From top of crest: x= Bldg up/down wind?

Flat 80.0 ft 100.0 ft 0.80 0.50 160.0 ft 50.0 ft downwind 0.000 0.792 1.000 1.00

H/Lh= 0.50 K1 = x/Lh = 0.31 K2 = z/Lh = 0.23 K3 = At Mean Roof Ht: Kzt = (1+K1K2K3)^2 =

Gust Effect Factor
h= B= /z (0.6h) = 36.7 ft 200.0 ft 22.0 ft

Flexiblestructure if natural frequency < 1 Hz (T > 1 second). However, if building h/B < 4 then probably rigid structure (rule of thumb). h/B = 0.18 Therefore, probably rigid structure

G=
Rigid Structure 0.20 l= 500 ft zmin = 15 ft c= 0.20 gQ , gv = 3.4 Lz = 461.1 ft Q= 0.84 Iz = 0.21 G= 0.84

0.85 Using rigid structure default

/ε =

Flexible or Dynamically Sensitive Structure NaturalFrequency (n1) = 0.0 Hz Damping ratio (β) = 0 /b = 0.65 /α = 0.15 Vz = 80.6 N1 = 0.00 Rn = 0.000 η= Rh = 28.282 0.000 η= RB = 28.282 0.000 η= RL = 28.282 0.000 gR = 0.000 R = 0.000 G = 0.000

h=

36.7 ft

Company
Address City, State Phone other

JOB TITLE JOB NO. CALCULATED BY CHECKED BY

Example 6&7
SHEET NO. DATE DATE

Enclosure Classification
Test for Enclosed Building: A building thatdoes not qualify as open or partially enclosed. Test for Open Building: All walls are at least 80% open. Ao ≥ 0.8Ag

Test for Partially Enclosed Building: Ao Ag Aoi Agi Input 0.0 sf 0.0 sf 0.0 sf 0.0 sf Ao ≥ 1.1Aoi Ao > 4' / 0.01Ag Aoi / Agi ≤ 0.20 Test YES NO NO

Building is NOT Partially Enclosed.

Conditions to qualify as Partially Enclosed Building. Must satisfy all of the following: Ao>= 1.1Aoi Ao > smaller of 4' or 0.01 Ag Aoi / Agi 2h* -0.30 -4.6 -7.9 *Horizontal distance from windward edge

Windward Wall Pressures at "z" (psf) z 0 to 15' 20.0 ft 25.0 ft 30.0 ft 36.7 ft 53.4 ft Kz 0.85 0.90 0.95 0.98 1.02 1.11 Kzt 1.00 1.00 1.00 1.00 1.00 1.00 Windward Wall qzGCp w/+qiGCpi w/-qhGCpi 10.2 psf 6.9 psf 13.4 psf 10.8 7.6 14.1 11.3 8.1 14.6 11.8 8.5 15.0 12.3 9.0 15.5 13.3 10.016.5

Combined WW + LW Normal Parallel to Ridge to Ridge

h= ridge =

17.9 psf 18.5 19.0 19.4 20.0 21.0

17.1 psf 17.7 18.2 18.7 19.2 20.2

NOTE: See figure 6-9 of ASCE7 for the application of full and partial loading of the above wind pressures. There are 4 different loading cases. Parapet z 0.0 ft

Kz 0.85

Kzt 1.00 0.0 psf 0.0 psf

qp (psf) 0.0 (GCpn = +1.8) (GCpn = -1.1)...