Design of Structures

Teacher

Mr.Sudheer Choudari

Category

Core Courses

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Course Name : Design of Structures

Code(Credit) : CUTMCE04(1-3-0)

Course Objectives

  • • To teach the basic theoretical aspects and contemporary issues in the design and fabrication of reinforced concrete members
    • To teach the basic fundamental behavior of different section, bolts, members of steel structure used in construction.
    • To analyze and Design of Concrete Structures and Pre-Engineered Building(PEB) by using Software ETABS

Learning Outcomes

  • • To gain the knowledge of RCC design calculation with relevant Indian Standards.
    • After completion of the courses the students will gain knowledge of Pre-Engineered design calculation with relevant Indian Standards
    • Students will develop skill of converting client’s requirement to structural drawing by using ETABS.

Course Syllabus

Course content(50 Hours)

Module I: Building Structural Frame (9 Hours):
Introduction to Reinforced Concrete, Mechanical Properties of Concrete, Flexural Analysis, Combined Flexure and Axial Load, Shear analysis. Limit State Method using Indian Standard Codes.
Practice:
1. Draw grids, Reference planes and joints, create new project models and introduction of the layout. (2hr)
2. Draw building structural frame and define material properties (4hrs)

Module II: Load definition to Building frame (5 Hours):
Modeling of Building, Load Calculations, Seismic weight, Base shear, Storey shear, Mass source, diaphragm, Meshing of Slab.
Practice:
3. Building structural frame- Define Properties, Material, Section, Mass source, Load pattern, load combinations
● Define Section Properties + Section Property Modifiers (1hr)
● Load Pattern (Gravity Loads + Earthquake (seismic) Loads (0.5hr)
● Wind Loads, Dead loads, super dead loads and live loads introductory(0.5hr)
● Define Load combination (Manual + Auto)(0.5hr)
● Meshing for Slabs, Walls, beams and Columns (0.5 hr)
● Assign Loads to structure as per IS Codes(0.5)
● Define Mass Source (For Lateral analysis)(0.5 hr)
● Pier Labels and Spandrel Labels for shell members such as shear walls and retaining RCC walls (1hr)

Module III: Analysis and check for Safety (10 Hours):
Analysis checks, Post design checks, Pushover analysis, response spectrum analysis, time history analysis.
Practice:
4. P Delta Analysis Check (How to include P-delta effects) (2hr)
5. Center of Mass and Center of Rigidity (and Building Eccentricity Check)(1hr)
6. Mass (Weight) Irregularity check as per the code (1hr)
7. Story Displacement, Story Drift checks as per code (1hr)
8. Torsional Irregularity check(1hr)
9. Modal Analysis Case [ Eigen or Ritz Vectors], Time period (1hr)
10. Time History Analysis (2hrs)

Module IV: Reinforcement Detailing and scheduling (6 Hours):
● Reference of IS codes IS SP 34-1987 (Theory) (1hr)
● IS 13920-1993 Ductile Detailing of RC structures (Theory) (1 hr)

Practice:
11. Detailing of Beams, Columns and slabs using Autocad (4hr)

Module V: Design of Foundations using SAFE foundation (6 Hours):
Introduction to SAFE foundation, familiarizing tools used in SAFE foundation. Types of foundations introduction, isolated footing design, combined footing design and mat foundation design.
Practice:
12. Importing ETABS model file into the SAFE foundation software (0.5 hr)
13. design of isolated footing (1 hr)
14. design of combined footing (1 hr)
15. design of mat foundation (1 hr)

Module VI: Materials and Specifications of Steel/ Pre-Engineered Building (PEB) Structures (06 Hours):
PRE-ENGINEERED BUILDING COMPONENTS: Primary System: Main frames, Gable End Frame - Secondary frame system: Sizes and Properties of Purlins & Girts – Bracing System: Rod, angle, Portal, Pipe bracing – Sheeting and Cladding: Roof Sheeting and Wall sheeting – Accessories: Turbo Ventilators, Ridge vents, Sky Lights, Louvers, Insulation, Stair cases.
Practice:
16. DESIGN LOADS ON PRE-ENGINEERED BUILDINGS. Design of PEB frame under the influence of Dead, Live, Collateral, Wind, Seismic and Other applicable Loads. Serviceability Limits as per code IS:800. (4hrs)
Module VII: PEB DESIGN METHODOLOGY (8 Hours):
Practice:
17. Design Parameters of PEB Frames - Depth of the section, Depth to Flange width ratios, Thickness of Flange to thickness of Web ratio. d/tw, bf/tf ratios of sections as per IS code. Section Sizes as per Manufacturing Limitations. Analysis and Design of Rigid Frames. Rigid Frame Moment Connection, Shear Connection- Anchor bolt and base plate design (Pinned and Fixed). (8hrs)

Text Books:
1. Reinforced Concrete design-S. N. Sinha. Tata McGraw-Hill, New Delhi
2. S K Duggal," Design of steel structures",2012.
3. S. Ramamurtham and R. Narayan," Design of steel structures" ,2014

Reference:
1. PEB design using ETABS
2. Etabs Full - Video

Session Plan

Session 1

Session 2

Session 3

Combined Flexure and Axial Load, Shear analysis.
Combined Loading - Pdf
Combined Loading - Columns (Video)

Session 4 and 5

Practice: 1. Draw grids, Reference planes and joints, create new project models and introduction of the layout.
How to Import Architectural DXF or DWG grid into ETABS - Video
How to draw grid Lines manually in ETABS-Video
Define Grids in ETABS - Video

Session 6,7 and 8

Practice 2: Draw building structural frame and define material properties
Draw building structural frame-Video
Define Materials - Video

Session 9

Practice 2: Define material properties
Material Properties- Video

Session 10

Module II: Load definition to Building frame:
Modeling of Building, Load Calculations, Seismic weight, Base shear, Storey shear, Mass source, diaphragm, Meshing of Slab.
Practice:
3. Building structural frame- Define Properties, Material, Section, Mass source, Load pattern, load combinations
● Define Section Properties + Section Property Modifiers (1hr)
Define Section Properties - Video
Correction of Grids - Video

Session 11 and 12

Practice 3: Cont...
●Load Pattern (Gravity Loads + Earthquake (seismic) Loads (0.5hr)
● Wind Loads, Dead loads, super dead loads and live loads introductory(0.5hr)
● Define Load combination (Manual + Auto)(0.5hr)
● Assign Loads to structure as per IS Codes(0.5)
Define the load patterns- Tall Buildings Design - Etabs-Video
Assign of loads - Video

Session 13

● Meshing for Slabs, Walls, beams and Columns (0.5 hr)
● Define Mass Source (For Lateral analysis)(0.5 hr)

Define The Mass Source- Tall Buildings Design - Etabs - Video
Meshing of Slabs and walls - Video

Session 14

● Pier Labels and Spandrel Labels for shell members such as shear walls and retaining RCC walls (1hr)
Difference between wall Pier and Spandrel - Concept(Video)
How to define Pier and Spandrel in Etabs - Video

Session 15

Module III: Analysis and check for Safety :
Analysis checks, Post design checks, Pushover analysis, response spectrum analysis, time history analysis.
Pushover Analysis - Pdf
Time History Analysis - Video
Response Spectrum Analysis - Video

Session 16 and 17

Practice:
4. P Delta Analysis Check (How to include P-delta effects) (2hr)
P Delta Analysis - Introduction - Video
P Delta Analysis - Etabs - Video

Session 18

Practice:
5. Center of Mass and Center of Rigidity (and Building Eccentricity Check)(1hr)
How to calculate story center of mass and center of rigidity using Etabs - Video

Session 19

Practice:
6. Mass (Weight) Irregularity check as per the code (1hr)

Mass irregularity check in etabs - Video

Session 20

Session 21

Practice:
8. Torsional Irregularity check(1hr)
Torsional Irregularity Check - Video

Session 22

Practice:
9. Modal Analysis Case [ Eigen or Ritz Vectors], Time period (1hr)
Modal Analysis (Dynamic Analysis)- Tall Buildings Design - Etabs - Video

Session 23 and 24

Practice:
10. Time History Analysis (2hrs)
Time History Analysis using IS Codes - Video

Session 25

Module IV: Reinforcement Detailing and scheduling:
● Reference of IS codes IS SP 34-1987 (Theory) (1hr)
IS Code: SP 34 - PDF

Session 26

IS 13920-1993 Ductile Detailing of RC structures (Theory) (1 hr)
IS 13920 Code - PDF

Session 29 and 30

Session 31 and 32

Module V: Design of Foundations using SAFE foundation:
Introduction to SAFE foundation, familiarizing tools used in SAFE foundation. Types of foundations introduction
Types of foundation in construction work - Video
SAFE - 01 Introductory Tutorial: Watch & Learn - Video

Session 33

Isolated footing design, combined footing design and mat foundation design.
Isolated footing Design Procedure with an Example and Excel Sheet Design - Link

Practice:
12. Importing ETABS model file into the SAFE foundation software (0.5 hr)
Importing Etabs file into SAFE- Video

Session 35

Practice:
14. Design of combined footing (1 hr)

Design & Detailing Of Combined Footing As Per IS Code 456 - Video

Session 36

Practice:
15. Design of mat foundation (1 hr)

Mat Foundations - Video

Session 37 and 38

Module VI: Materials and Specifications of Steel/ Pre-Engineered Building (PEB) Structures:
PRE-ENGINEERED BUILDING COMPONENTS: Primary System: Main frames, Gable End Frame - Secondary frame system: Sizes and Properties of Purlins & Girts – Bracing System: Rod, angle, Portal, Pipe bracing – Sheeting and Cladding: Roof Sheeting and Wall sheeting – Accessories: Turbo Ventilators, Ridge vents, Sky Lights, Louvers, Insulation, Stair cases.
Pre-Engineered Building (PEB) Structures - PPT(PDF)
Read PEB Drawings and Draw Steel Sections in ETabs - Video

Session 41 and 42

Practice:
16. DESIGN LOADS ON PRE-ENGINEERED BUILDINGS. Design of PEB frame under the influence of Dead, Live, Collateral, Wind, Seismic and Other applicable Loads. Serviceability Limits as per code IS:800.
Define Load Patterns in Etabs-Video
Define Load Cases-Video
Define Load Combinations-Video
Calculation of Dead, Live and Wind Loads-Video
Correct the Load Combinations-Video

Session 43, 44, 45 and 46

Module VII: PEB DESIGN METHODOLOGY :
Practice:
17. Design Parameters of PEB Frames - Depth of the section, Depth to Flange width ratios, Thickness of Flange to thickness of Web ratio. d/tw, bf/tf ratios of sections as per IS code. Section Sizes as per Manufacturing Limitations.

Assign the releases to structural members-Video
Assign Supports to the Building-Video

Session 47,48,49 and 50

Module VII: PEB DESIGN METHODOLOGY:
Practice:
17. Analysis and Design of Rigid Frames. Rigid Frame Moment Connection, Shear Connection- Anchor bolt and base plate design (Pinned and Fixed).
Steel Connection Design - Video
PEB Building Procedure Step by Step | Steel Structure Construction Procedure- Video

Case Studies

Case Studies

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