STRUCTURAL SYSTEM AND DESIGN-III

Course Code	Course Title	Course Structure			Credits	Examination Scheme
		Lecture	Tutorial	Studio		Internal Assessment	External Jury	External Exam
ARC1031	STRUCTURAL SYSTEM AND DESIGN-III	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 RCC and Steel Structures. (No detailed designs mathematical calculations or derivation of formulae are needed.)

Contents:

Unit 1 Introduction To Building Codes And Standards

1. National Building Code SP7
2. Codes and Standards for building materials
3. Codes for Concrete and Steel construction
4. Codes for loads acting on Buildings
5. Steel Tables

Unit 2 Structure Systems

Vector Active Structure System

Structure acting mainly through composition of compression and tension members in coactive compression and tension 

1.      Triangulation

2.      Trusses (Plane & Vierendeel Truss)

3.      Curved Truss Systems

4.      Space Frames

5.      Geodesic Domes

Unit 3 Materials And Their Properties

Concrete

1.      Types of Concrete.

2.      Different types Of Concrete (RCC & PCC).

3.      Structural Members in Concrete Structures.

4.      Types of Concrete Structures.

Precast & Prefabricated Concrete Structures

1.      Precast Concrete structures

2.      Pre-stressed Concrete Structures

3.      Construction techniques of Precast & Pre-stressed Concrete Structures

4.      Use of Pre cast & Pre-stressed Concrete Structures

Steel

1. Types Of Steel members
2. Structural Members used in Steel Structures
3. Types Of Steel Structures

Unit 4 Structure Design Of Concrete And RCC Structures

RCC Design: Behaviour of heterogeneous materials in Direct Force & Bending.

Methods of RCC Design: Present trends in RCC design. Concepts of Working stress Method (WSD), Ultimate Load Method (ULM) and Limit State Methods (LSM) of RCC design. Idea of Neutral Axis, Compression zone, Tension zone, Lever arm and Moment of Resistance of an RC design. Basic assumptions in RCC design.

(Only LSM of RCC design to be dealt using Fe 415 grade steel reinforcement. Working Stress

Method of Design and Mild steel of Fe250 grade are obsolete in use and will NOT be dealt).

General Principles of Limit State Method of Design:

Concept of Limit States and load factors in LSM of RCC design.

Design of RCC Members:

Design & Detailing of following RCC elements using Design Tables of SP-16 (No formula to be derived. Use of charts and tables of SP16 to be adopted to avoid memorization of formulae. Students must learn procedure and applications rather than formulae and derivations.

• Tables/charts/handbooks/IS codes also to be supplied in exams).
• Singly Reinforced simply supported Beam Sections under udl.
• Doubly reinforced simply supported beam sections under udl.
• One way simply supported rectangular/square RCC slabs.
• Two ways simply supported rectangular/square RCC slabs.
• Axially loaded RCC columns (Rectangular, square and circular sections with or without helical      reinforcement). Tie reinforcement in RCC columns.
• Isolated square footings for axially loaded RCC columns (Footings to be designed for only bending, calculations for beam and punching shear NOT included). Option to provide tapered footing or footing of uniform depth to be given in exams).
• Design for shear reinforcement for beams using design tables of SP16 (Only Stirrup shears reinforcement to be covered in design. Calculations for bent up bars as shear reinforcement NOT covered).

Note: At second year level, only design for vertical loads as per IS 456-2000 requirements to

be covered only for simply supported slabs and beams. Design and detailing for continuous

Beams and slabs and for Earthquake resistant design including ductility requirements as per

IS: 1893-2002 and IS: 13920-1993 are to be covered in 3rd year, when earthquake loading as

per 1893-2002 and IS: 13920 are also dealt

Unit 5 Design Of Steel Structures

Introduction: Merits, demerits and application of steel in structures. Structural properties and allowable stresses. Standard Rolled Steel sections, their designations and applications, Introduction to steel tables.

Theories of Design: Working stress and Limit State Methods of Design, basic concepts, merits and limitations of each method, present trends in design, Note: Keeping in view the present trends in design, Teaching is proposed to cover primarily Limit State Method of Design as per the recommendations of IS: 800 (latest version).

Connections in Steel structures: Riveted, welded and bolted connections. Merits of welded connections over riveted connections. Present trends. Modes of failure of riveted and welded connections. Design of simple riveted and welded connections.

Design of Steel compression members: Effect of buckling, concepts of slenderness ratios and effective lengths of steel compression members. Allowable stresses in steel compression members. Use of Tables for slenderness ratio vs allowable stress in compression in steel. Concepts of built up steel column sections, and lacings without design calculations.

Steel tension members: Single angle and double angle tension members. (Simple cases).

Design of Steel Beams: Simple design of steel beams using M/Z concept. Concept of built up steel beam sections and plate girders without design calculations.

Steel Roof Trusses: Functions, merits and applications of steel trusses. Terminology and structural components. Design of members (No analysis). Introduction to SP38: Handbook on steel roof trusses and its use in systems with steel roof trusses.

Note: All tables, handbooks, and formulae to be supplied in exams. Only application to be expected from students.

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-III	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. Ching