Eric Sternberg
Michael Baker Corporate Headquarters
Moon Township, PA
To see full balanced voltage drop and load flow branch data check Appendix B
Structural Breadth
Background
In order to increase day lighting within the building I want to increase window
sizes throughout the building. Do to it being a pre-cast concrete exterior wall the
building is broken up into tilt panels. Do to the fact that it is a non load bearing wall the
loads that are applied to it are wind loads and self weight. Once I found the wind loads
by hand I calculated the structural information utilizing PCA wall.
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Eric Sternberg
Michael Baker Corporate Headquarters
Moon Township, PA
Wind Load Calculations
Components and Cladding
h=42’<=60’
Flat roof
Met all requirements for Simplified Procedure
V=90 mph
Occupancy Category II
I=1.00
Exposure Category C
λ=1.51
Kzt=1.0
pnet30:
a= (0.10)(122.5’)=12.25’
|
(0.4)(42’)=16.80’
|min
a=12.25’>(0.04)(122.5’)=4.88’>3’
h=42’
θ=0o
North-South Direction:
l=122.5’
A=(122.5’)(42’)=5145 ft2; use 500 ft2
Wall Zone 4: 10.9 psf
Wall Zone 5: 10.9 psf
East-West Direction:
l=322.5’
A=(322.5’)(42’)=13545 ft2; use 500 ft2
Wall Zone 4: 10.9 psf
Wall Zone 5: 10.9 psf
For all wall surfaces:
pnet=λKztIpnet30=(1.51)(1.00)(1.0)(10.9 psf)=16.5 psf
PCA Slab Input Data
GENERAL INFORMATION:
====================
Project : Michael Baker Corporate Headquarters Precast Wall Type 1
File : C:\Documents and Settings\Me\My Documents\Thesis\PCA\Wall 1.wa3
Units : English Date : 2/25/2008
Code : ACI 318-02 Time : 12:53:55 PM
THICKNESS DEFINITIONS:
======================
thick: (in)
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Eric Sternberg
Michael Baker Corporate Headquarters
Moon Township, PA
Label thick
-------- -------Thick 10.00
PLATE DESIGN CRITERIA:
======================
Location measured from left face: (in)
___Horizontal__ ___Vertical____
Label Curtains X-Location Y-Location %ro_min %ro_max %ro_min %ro_max
-------- -------- ---------- ---------- ------- ------- ------- ------DC 2 3.00 2.50 0.20 8.00 0.12 8.00
STIFFENER SECTION DEFINITIONS:
==============================
Web width, web height, flange width, flange thickness: (in)
Note; for circular section, Web width represents the section diameter
_______________________ WEB ___________________
Label Type Projection Width Height
-------- ----------- ------------- ---------- ---------stiifene Rectangular At the middle 1.00 1.00
_____ LEFT FLAGE ____ _____ RIGHT FLAGE ___
Label Width Thickness Width Thickness
-------- ---------- ---------- ---------- ---------stiifene 0.20 0.30 0.20 0.30
CONCRETE DEFINITIONS:
=====================
f'c, Ec: (ksi)
Wc: (pcf)
Label f'c Wc Ec v
-------- ------------ ------------ ------------ -------Concrete 3 150 3320.6 0.150
REINFORCING STEEL DEFINITIONS:
==============================
Fy, Es: (ksi)
Label Fy Es
-------- ------------ -----------Steel 40 29000
RIGID SUPPORT DEFINITIONS:
==========================
Label dx dy dz rx ry rz
-------- ----- ----- ----- ----- ----- ----Fixed Fixed Fixed Fixed Fixed Fixed Fixed
Symmetry Fixed Free Free Free Fixed Fixed
UNIFORM AREA LOAD DEFINITIONS:
==============================
wx, wy, wz: (psf)
Label Case wx wy wz
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Eric Sternberg
Michael Baker Corporate Headquarters
Moon Township, PA
-------- ---- ---------- ---------- ---------Wind B 0.000 0.000 16.500
LINEAR AREA LOAD DEFINITIONS:
=============================
wx, wy, wz: (psf)
y: (ft)
Label Case y wx wy wz
-------- ---- -------- ---------- ---------- ---------Earth Pr B 0.00 0.000 0.000 -832.000
18.00 0.000 0.000 -256.000
LINE LOAD DEFINITIONS:
======================
wx, wy, wz: (klf)
Eccentricity: (in)
Label Case wx wy wz Ecc.
-------- ---- ---------- ---------- ---------- ------Wind fro B 0.000 0.000 4.125 0.00
LOAD COMBINATIONS:
==================
Self weight is included under Case A.
Ld Combo Case A Case B Case C Case D Case E Case F Type
-------- ------- ------- ------- ------- ------- ------- ---S1 1.000 1.000 0.000 0.000 0.000 0.000 Ser.
1.4(D+F) 1.400 1.400 0.000 0.000 0.000 0.000 Ult.
PCA Slab Output
This is just a piece of the sample output due to the fact that there are 347 pages of
pure data output like this I feel it is unnecessary to attach more than a sample page. If
more data is necessary please notify me and I will send more data. I also am attaching
the graphical data that the pure data represents.
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Eric Sternberg
Michael Baker Corporate Headquarters
Moon Township, PA
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Eric Sternberg
Michael Baker Corporate Headquarters
Moon Township, PA
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Eric Sternberg
Michael Baker Corporate Headquarters
Moon Township, PA
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Eric Sternberg
Michael Baker Corporate Headquarters
Moon Township, PA
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Eric Sternberg
Michael Baker Corporate Headquarters
Moon Township, PA
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Eric Sternberg
Michael Baker Corporate Headquarters
Moon Township, PA
Conclusions
As a result of my calculations I found I was able to increase the window loads
from having multiple window sizes that are 7’ 3” x 6’ and 3’ x 6’ to 9’ x 9’ and 7’ 3” x
9’. This allows me to increase the daylight within the building for my lighting depth. I
interpreted this based upon the graphical analysis which represents deformation and
stresses I was able to determine that the design I was hoping for worked.
Mechanical Breadth
Background
Once again my breadth shall be tied in with the window system that I am
changing. For my mechanical breadth I plan on calculating the existing and altered heat
transfer do to the altered window sizes. Then comparing them to see how much the
cooling coil and gas heat within the rooftop units will need to be changed.
Calculations
Figure 74: Building envelope
TI
TO
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