A Short Course on Steel Structure Design – PDF

Design Guideline for:

• Steel Shed with Mezzanine Floor
• Industrial Warehouse with Crane

Contents:

Practical Images for Better Understanding. 3

Steel Structures Benefits. 18

Hot Rolled, Built Up & Cold Formed Section. 21

Modulus of Elasticity. 28

Yield Stress- Yielding. 28

Analysis Methodology. 29

LRFD Vs ASD.. 29

First Order Analysis. 31

Second Order Analysis. 32

First Order Analysis Vs Second Order Analysis with Example. 35

What are P-Δ and P-𝛿 effects?. 36

Stiffened Element & Unstiffened Element. 39

Table 6.10.1: Limiting Width-Thickness Ratios for Compression Elements. 40

Comparison of Different Analysis Method. 45

Direct Analysis Method. 46

Equivalent Lateral Method (ELM). 51

Effective length method Vs Direct analysis method. 52

First Order Analysis Method (FOM). 55

BNBC 2020 Code (Steel Part). 58

Others Code. 64

ASCE 7-10 Seismic Loads. 68

ASCE 7-10 Wind Loads. 79

Design Steps. 88

Read Architectural Drawing. 89

Staad ShortCut. 90

Complete 3D Model 91

Assign Steel Materials. 91

Define & Assign Section Size. 92

Release Member. 93

Bracing in Steel Structures. 94

Bracing – STAAD.Pro Modeling Guide. 103

Assign Truss / Tension member. 107

Difference between MEMBER TRUSS and MEMBER TENSION.. 110

SUPPORTS. 112

Define Direct Analysis Definition. 113

Load Calculation. 114

Dead Load. 114

Collateral Load. 115

Notional Load. 117

Live Load. 119

Mezzanine Load. 122

Seismic load. 122

Wind Load. 127

Seismic Load Definition. 134

Define Load Pattern & Apply Loads (Staad 2024 version). 134

Define Load Combination. 137

For Direct Analysis Method. 138

For Effective Length Method. 140

Load Combination vs Repeat Load. 143

PERFORM ANALYSIS. 146

NL = 500 Explanation. 147

Direct Analysis Parameter Explanation. 149

Iterations = 20 Vs P-Delta Iterations = 15. 151

“Perform Analysis” Vs “Perform direct analysis” in Staad pro. 153

Select Design Combination. 154

Define Design Parameter. 154

Understanding for Assigning LY LZ UNT UNB in STAAD Pro. 157

Lateral torsional buckling (LTB). 160

Check Code. 162

Assign Steel Take Off. 162

Run Analysis. 163

WARNING/ERROR- INTERPRETATION.. 163

Check Serviceability. 165

Design Crane Beams. 170

Staad Input Example. 172

References. 202