Steel

STEEL STRUCTURES
SEMESTER PROJECT
BY
Group 2

INTRODUCTION
• Many structures across the globe are made by steel.
• Advantages of steel structures are:
 Rapid construction in all weathers
 Ease of fabrication and speed of erection
 Easy field repair
 Design flexibility
 Renewable
 Components can be re-used
 Dimensional stability
 Repairing and strengthening
 Restoration and renovation
 Reduced form and scaffold
 Structure can start to function right after its completion
 Quality and comfort.

OBJECTIVES
• Demonstration of basic concepts of leadership and teamwork in
undertaking a group design project.
• Collaborate with a team in a design project evaluated through a
technical report and oral presentation.
• Demonstration of good technical writing and presentation skills
• Application of current industry design recommendations (AISC) to
design steel structures
• Understand basic concepts of public policy as it relates to structural
design (e.g.,
• Development and use of codes and standards).

60 mph
0.85 TABLE 6-4 , ASCE 7-05
1
II TALE 1-1 ASCE 7-05
1 Assuming 1 as the topograghic Data is missing
0.85 For Rigid Structures
Surface Roughness B
qz = 0.00256* Kz* Kzt*Kd*V^2*I qz= 7.834 Kz
External Pressure: qGCp
External Pressure Coefficient Cp= 0.8 Windward Wall
Cp= -0.5 leeward walls (L/B= 80/90 = 0.89)
Cp= -0.7 Side walls
5.326848 Kz
Kz Z(ft) qzGCp (Psf)
0.57 0-15 3.0363
0.62 15-20 3.30265
0.66 20-25 3.51572
0.7 25-30 3.72879
0.76 30-40 4.0484
0.81 40-50 4.31475
0.85 50-60 4.52782
0.89 60-70 4.74089
Max Building Height 61 ft
-2.96306 psf
-4.14828 psf
Internal Pressure qiGCPi
qi=qh= 6.971904 psf
Enclosed Building:: Gcpi = 0.18 or -0.18
qiGCpi= 1.254943 psf (acting towards or away from surface)
Kz Z(ft)
qzGCp
(Psf) 1.254943 -1.25
0.57 0-15 3.0363 4.291246 1.781
0.62 15-20 3.30265 4.557588 2.048
0.66 20-25 3.51572 4.770662 2.261
0.7 25-30 3.72879 4.983736 2.474
0.76 30-40 4.0484 5.303347 2.793
0.81 40-50 4.31475 5.56969 3.06
0.85 50-60 4.52782 5.782764 3.273
0.89 60-70 4.74089 5.995837 3.486
Cp= -0.9
Windward Roof
qhGCp= -5.3335 ± 1.255 = -4.07856 or -6.58845 psf
Leeward Roof Cp= -0.5
qhGCp= -2.9631 ± 1.255 = -1.70812 or -4.218 psf
-4.07856 -1.70812
External leeward wall pressure =
qhGCp =
External Side Wall Pressure = qhGCp=
Distributed Loading on the Windward Side
WIND CALCULATIONS
Topographic factor Kzt=
Surface Roughness Category =
VALUES of Kh
Gust Factor G =
External windward wall pressure =
qzGCp =
BASIC WIND SPEED V =
Wind directionality factor Kd =
Importance factor I =
OCCUPANCY CATEGORY =
-0.36707 -0.15373
5.782764 50-60 0.520449
5.56969 40-50 0.501272
5.303347 -4.22 psf 30-40 0.477301
4.983736 25-30 0.448536 -0.37962
4.770662 20-25 0.42936
4.557588 15-20 0.410183
4.291246 0-15 0.386212
-6.58845 -4.218 -0.59296 -0.37962
50-60 0.294559
40-50 0.275382
3.272878
30-40 0.251412
3.059804 25-30 0.222647 -0.15373
2.793462 20-25 0.20347
2.473851 15-20 0.184293
2.260777 -1.71 psf 0-15 0.160322
2.047703
1.781361
1.25494272
-1.25494272
ETABS FINALfinal.xlsx

MODELLING ON ETABS
OBJECTIVES
• CARRY OUT THE STRUCTURAL ANALYSIS
• PRELIMINARY DESIGN

Column
1. First of all we designed columns on Etabs
2. Then we downloaded a Properties Viewer file
for AISC Manual 13th Edition.
3. AISC 13.0 Properties Viewer.xls
4. Using this file we calculated the lightest
suitable W-Sections for The columns.
5. Design of Columns.xlsx
6. Then we compared the Etabs Design with the
lightest Sections from Excel Spreadsheet.

Taking Steel Project For further
Analysis:
• Taking project to next level
• Integration of soft wares
• Advantage-QTO, Energy Analysis, Coercion of
Systems

• Etab integrated with Revit via IFC files
• Values as given by Usman Mehmood
• Mechanism

• Green Energy Analysis
• Software Used Ecotect Design,Green Building
Studio
• Rvt to gpxml

• Room bounding factors are given ourselves
otherwise it don’t work

Steel

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