HomeMy WebLinkAboutWind load cert for BastyDESIGN & PERMITTING, INC.
Date: 10/26/20
Project: Basty Residence / 21 Lake Vista Tr #102, Port 5t. Lucie, FL
Re: Wind Loads
MecaWind v2351
Software D••evelooer: Me Ca Enterprises Inc., www.meca.biz, Copyright (D 2020
Caleulsti s Prepared by: Calculations Prepared For:
SBD Clientr Hasty Residence.
Fort Lauderdale, Florida, 33309 Project #: 20005
Date: Oct 26, 2020 Location: Port St Lucie FL 34952
Designer: Soumel T.origa. P.F._ nescriptiort:
windows and Door Retrofit
File Location : D:\AHP 20005 Basty Residence WL\Wir:d Loads\Batty Residence inecawind.wnd
Basic Wind Parameters
Wind Load Standard = ASCE 7-10 Exposure Category - C
Wind Design Speed - 160.0 mph Risk CaLegory II
Structure Type = Building Building Type = Enclosed.
Building Inputs
Roof^_ype: anilding Roof Type Hipped Hipped =
W WidLh Perp Le Ridge = 52.000 ft L Lengih Along Ridge = 60.000 ft
F.Ht F'Zv7 Height = 2D.D00 ft Hip Ridge Hipped Length = 1.000 ft
RE Roof Entry Method - Ridge RHt Ridge Height - 35.000 ft
OR Specify Roof to Wall intersection and Overhang= Snfit. Theta Roof Slope
Par Is there a parapet = False ON ALT. : Sof,t = 3.000 ft
Main Fuad Force Resisting System (MWFR9) Calculations per Ch 27 Part 1:
EHt =Save Height = 20.000 ft
RHt = Rid;e Height = 35.000 ft.
h = Mean Roof Height: 0.5"tFHt+RHt) 21.530 ft
Zh Mean Roof Height for Kh: h + Ease_Dist 27.500 ft
Kh = Since 15 ft [4.572 mi < Ah < zg --> 2.01 * (Zh/zg)^(2/Alpha) 0.964
Kzt = Topographic Factor is 1 since no Topographic feature specified = 1.000
Kd = Wind Directionality Factor per Table 26.6-1 = C.35
GCPi = Ref Table 26.11-1 for Enclosed Building +/-0.10
RA Roof Area = 3843.01 sq It
Load Factor based anon A9D Design -__ -- = 0.60
qh = (0.00256 * k:h * Eft * Ed * 1'2) * LF = 32.23 psf
qi+- = ror Negative -nternal Pressure of Cnclosed Building use qh*LF s .32-23 psf
qip = for Pnsit ivc Internal Pressure of Enclosed Building use qh*LF = 32.23 psf
Gust Factor Calculation:
Gust Factor Category I Rigid Strurtures - SimpLified Method
C1
= For Rigid Structures (Nat. Freq.>1 Hz) use 0.a5
0.85
Gust
Factor Category 1I Rigid structures - Complete Analysis
Z.
= 0.6 * Ht
= 16.500 ft
Izm
= Cc * (33 / Zm) 0.167
= 0.224
Lm
L (Zm / 33) Epsilon
= 435.275
4
= (1 / ;l + 0.63 * ((B - Ht) Lzm}^0.63 U "0.5
= 0.907
G2
0.925"((1+1.)*lzm-3-4*4)/!111.7*3.4*1zm)]
Gust
Factor Used in Analysis
G
= Lessor Or. 01 Or G2
= 0.850
Components and Cladding {CSC) Calculations per Ch 30 Part 4:
h
- Mean Roof Height
= 27.500 ft
LF
- Load Factor based upon ASD Design
0.60
Kzt
W. Topographic Factor is 1 since no Teprgraphic feature specified
= 1.000
EAF
r Table 30.7-2
- Exposure Adjusment Factor per
= 1.000
LHD
= Least Horizontal Dimension:Min(B, L)
52.000 It
al
= Min(O.I * LHD, 0.4 " h)
= 5.200 ft.
a
= Max(al, 0.04 a LND, 3 ft (0.9 m)]
= 5.200 ft
2a
= Parameter used to define zone width: 2*a
- 10.400 ft
Wind Pressures for Components and Cladding per Table 30.7-2
All wised pressures include a load factor of 0.6
Description Zone Area RF RF RF FOR Ptable Ptable p p
Ltr Fos Nog POs Neq Res Nog
----ft----- sq ft psf -psf psf psf
Mark 1 4 36.00 -0 0.932 0.935 1.000 63.27 -68.57 34.24 -36.45
Mark 2 4 65.38 D 0.856 0.904 1.000 63.27 -50.57 32.50 -37.20
Mark 3 5 53.77 D 0.871 0.828 1.000 57.90 -106.10 30.26 -52.71
EAP Exposure Adjustment Factor from Table 30.7-2
RF Ltr Reduction Factor (RF) Letter for Table 30.7-2
RF = Effective Area reduction factor from fable 30.7-2
Ptable Pressure taken from Table 30.7-2
Ref - Reference used for calculation
p - Wind Pressure: Ptable * EAF * RE * Kzt * LF * FOE (Eqn 30.7-11
FOH = 1.15 for Zone 3 Overhangs, and 1:0 f^.t all ethers (Sec 30.7.1..31
-Per Para 30.2.2 the Minimum Pressure for C&C is 3.60 psf [0.460 kPa7 I=ncludes LF)
Pressures on overhangs include Pressure from the -op and bottom surface of overhang
27.35 Deg
6499 Powerline Road Ste. 203 Fort Lauderdale, FL 33309 1 754.701.7126
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