STRUCTURAL SYSTEM AND DESIGN-IV

Course Code	Course Title	Course Structure			Credits	Examination Scheme
		Lecture	Tutorial	Studio		Internal Assessment	External Jury	External Exam
ARC1032	STRUCTURAL SYSTEM AND DESIGN-IV	2	2	0	2	50	0	50

Course Objectives

·        To understand the basic principles of structural mechanics so that it forms the basis for study of structure systems.

Learning Objectives

·        To understand the structural concept, applications feasibilities, scope and limitations of structures to resist different types of loads. (No detailed designs mathematical calculations or derivation of formulae are needed.)

Course Contents:

Unit 1: Structure Systems:

Surface Active Structure System

Structure acting mainly through surface continuity or structure systems in surface stress condition

1.      Surfaces & Curvatures

2.      Prismatic & Pyramidal Folded Structure Systems

3.      Singly Curved Shell Systems

4.      Rotational Shell Systems

5.      Anticlastic Shell Systems

Unit 2: Materials and Their Properties

High Strength Concrete, Precast & Pre-stressed Members

1.      Types Of High Strength Concrete

2.      Design, Manufacturing and erection Of Pre cast & Pre-stressed members

Unit 3: Analysis of Structures

Introduction to Soil Mechanics and Foundation Engineering:

Classification of Soils for Engineering purposes and their characteristics, Soil Investigations : Concept, need, and methods of soil testing, Field and laboratory testing. Plate load and Standard Penetration Tests, Soil Test reports, information available in a soil test report. Concept of ultimate and safe bearing capacity of soils and their determination Foundation Systems : Types & feasibility criteria. Isolated, Combined, Raft and Pile foundations. (Detailed design calculations not required). Foundations for treacherous soils like black cotton soils and filled up soils, under reamed pile foundations and their applications for black cotton soils and filled up soils. Retaining walls: RCC & Masonry retaining walls. Cantilever and counter fort retaining walls, structural components and principles of design ( No detailed design required). Basement walls. Earth pressure on retaining walls; calculations for Active and passive earth pressures with and without surcharge on retaining walls with vertical faces, ( Calculations for stability of retaining walls and design of base of retaining walls not required).

Loading assessment:

Various loads on buildings

·        Design load codes applicable in India: IS: 875 and IS: 1893.

·        Preview of Dead loads & Live loads as per IS: 875-Parts 1 and 2.

·        Calculation of DL+LL in a building. Load intensity on a slab, loads on supporting beams, columns and foundations.

·        Introduction to Horizontal loads on buildings. General characteristics of horizontal loads.

·        Introduction to Wind Loads, relation between wind speed and wind pressure, factors affecting wind pressure on a building.

·        Introduction to IS:875- Part 3; Wind zones of India, Basic wind speeds and wind pressures for different wind zones. Calculation of wind loads for a simple building. Earth quake loads:

·        Basic concepts, Causes of earthquakes, plate tectonics, earth quake regions of the world, earthquake terminology viz magnitude, intensity, epicentre, magnitude and intensity scales.

·        Prediction and probability of earthquakes. Some past earthquakes of India and the world.

·        Introduction to IS:1893- 2002; Seismic zones of India seismic zone factors, Calculation of

·        Earthquake loads on a simple building and its distribution along height of the building.

Unit 4: Analysis of Structures

Deflections: causes, demerits of large deflections in beams and slabs, permissible limits of deflections, methods to control deflections. deflected shapes of beams under loading, calculations for deflections for simply supported and cantilever beams for simple cases of udl, and point loads. Fixed beams: Fixed end moments under udl and point loads, BMD and SFD for a fixed beam under simple cases of udl and point loads. Sinking of supports; FEMs developed in fixed beam due to sinking of supports. Differential settlement of foundations, causes, prevention measures. Analysis of continuous beams and simple portals for vertical loads by method of Moment distribution (Non sway and simple cases only). Analysis of Simple portal frames for horizontal loads by Portal Method. Introduction to Computer Analysis of building frames. Merits of computer methods of analysis and design compared to manual methods. Introduction to STADDPRO software; generation of Input files and interpretation of output results for simple building frames and portal frames (simple cases only).

Unit 5: Introduction TO Earthquake RESISTANT DESIGN AND Detailing OF Rcc Building FRAMES:

Horizontal support systems (Floor systems) and Vertical support systems (Columns and walls). Floor systems; various types: Following floor systems to be studied under the subheads: salient features and structural components, structural behaviour a basic principles of structural design, preliminary sizing to fix up the system, merits, demerits applications and modern day use and applications. (No detailed designs required).;

Beam and Slab systems, Waffle slab systems, Flat slab and Flat Plate systems, Grid floors. High Rise buildings: Forces on a high rise building, Effects of horizontal loads in a high rise building. Shear walls; functions, types, Frames acting Along with Shear walls. Principles and desirable features for planning and design of shear walls in a building. Design and detailing of continuous RCC beams and slabs: Concept of moment design and detailing of continuous beams using approximate design coefficients as per IS: 456 and Design aids SP: 16 and SP: 34. Simplified detailing of RCC continuous Beams and slabs as per SP 34. (Design and detailing of equal span continuous beams upto three span under udl and equal panel continuous slabs to be illustrated to explain the principles of design and detailing. Complex cases with unequal spans/unequal loading not included) Earthquake Resistant Design of buildings: Introduction to Indian standards on Earthquake resistant design and construction of buildings viz IS:1893, IS: 13920 and IS: 4326). Desirable features in a building for good earthquake performance viz lightness, symmetrical layout and ductility. Ductility detailing of RCC building frames as per IS: 13920. Earthquake resistant design and construction of Masonry buildings as per IS: 4326. Modern trends in Earthquake resistant design; Base isolation and energy dissipation techniques. Study of performance of buildings during some recent earthquakes and lessons learnt (Example – Bhuj earthquake).

Pedagogy          

·        The lectures by the experts in the field will be arranged for the students so as to give them exposure to the practical aspects construction materials and how they combine to cover space.

·        The emphasis should be given to actual working on materials, making of models and studying their behavior under forces / loads.

·        To prepare the students to use their data/knowledge gained in the subject for practical application.

·        Groups of four to five students should be formed to study the behavior of a materials and their use and to prepare the report on the same.

·        The students should preferably be made to co-ordinate the fabrication of models to demonstrate the behavior of materials and how different components of   structure combine to cover space.

Assessment Scheme

Subject	Projects	Test	TOTAL
SSD-IV	35 (2 Assignments Maximum)	15	50

Instructions for Paper Setting:

Maximum Marks 50                                                                          Time Allowed: 3 Hrs

The question paper will comprise of five Sections each covering each unit. 

Each Section will have internal choice.

All questions Carry equal marks.

TEXTS & REFERENCES

·        Eangel, Structure Systems

• . IS: 875 (Parts 1 to 5), IS: 1893. IS: 13920, IS: 4326, IS: 456, SP: 34. NBC
• Arya, AS (2009) Masonry and Timber structures including earthquake resistant design.

New Chand and Brothers, Delhi.

·        Building Construction Illustrated, by F.D.K. Ching

·        Building Structures Illustrated: Patterns, Systems, and Design, by F.D.K.

·        IS: 875 (Parts 1 to 5), IS: 1893. IS: 13920, IS: 4326, IS: 456, SP: 34. NBC IS: 456, SP: 16, SP: 34, SP: 38, IS: 800 IS: 875 (Parts 1 to 5), IS: 1893. IS: 13920, IS: 4326, IS: 456, SP:

·        Ramamurtham, S (2010) Design of Reinforced Concrete Structures. Dhanpat Rai Publishing Co. Pvt. Ltd, New Delhi.

·        Khurmi, RS (2011) Theory of Structures. S. Chand, Delhi.

·        Aggarwal, P & Shrikhande, M. (eds.) (2006) Earthquake Resistant Design of structures. Prentice Hall of India, India.