Government Polytechnic Sundernagar Distt Mandi (H.P) Department of Civil Engineering

LESSON PLAN FOR STRUCTURAL MECHANICS (SEMESTER-4TH)SESSION: (April-JULY 2021) S.No MONTH | WEEK DATE

Week 2| CONTENTTS REMARKS

Introduction to Structural Mechanics. 1. Properties of Materials:Classification of materials, elastic materials, plastic

materials, ductile materials, brittle materials. 2. Simple Stresses and Strains:Concept of stress, normal and shear

19 stresses, Concept of strain and deformation, longitudinal and transverse

5

Week 2 7

Week 3| 12 strain poisson's ratio, volumetric strain, Hooke's law, modulii of elasticity and rigidity, Bulk modulus of elasticity, relationship between the elastic constants.

1 APRIL |Stresses and strains in bars subjected to tension and compression. Extension of Week 4 19 uniform bar under its own weight, stress produced in compound bars (two or three) due to axial load, Temperature stresses and strains

3. Shear Force and Bending Moment:Concept of a beam and supports (Hinges, Week 526 Roller and Fixed), types of beams: simply supported, cantilever, propped, over hang

and continuous beams (only concept).

Types of loads (dead load, live load, snow load, wind load seismic load as per IS Week 5 28 Codes etc) and types of loading (point, uniformly distributed and uniformly varying

loads),Concept of bending moment and shear force, sign conventions. Week 2 3 Bending Moment and shear force diagrams for cantilever beam.

Week 2 Bending Moment and shear force diagrams for simply supported and overhanging beams subjected to concentrated, uniformly distributed, uniformly varying load

5

Week 3 |Relationship between load, shear force and bending moment, point of maximum 10 |bending moment, and point of contraflexure

Week 312 Class Test -1 |4. Moment of Inertia:Concept of moment of inertia and second moment of area and

radius of gyration, theorems of parallel and perpendicular axis. |Second moment of area of common geometrical sections: rectangle, triangle, circle

19

2 MAY Week 4 17

Week 4 (without derivations). Second moment of areas for shapes made of simple rectangle

(L,T,Channel and l sections )only, section modulus.

5. Bending Stresses in Beams:Concept of pure/simple bending.Assumptions made Week 5 24 in the theory of simple bending,

Week 5 31 derivation and application of bending equation to circular cross-section, I section, T

and L sections ony

Week 1 Moment of resistance,Calculations of bending stresses in simply supported beam. 2

Week 2 6. Combined Direct and Bending Stresses: Concentric and eccentric loads single axis 7

eccentricity only,_ Effect of eccentric load on the section stresses due to eccentric loads, Numerical in Week 2 9

the case of short columns. Class Test-2 14

3 UNEWeek 3 Week 3 16 7. Shear Stresses in Beams:Concept of shear stresses in beams,

Week 4 shear stress distribution in rectangular, circular I, T, L sections (Formula to be stated

21 no derivation)_

23 8. Slope and Deflection: Necessity for determination of slope and deflection Week 4 -

Week 528 Moment area theorem (no derivation, simple numerical problems)

Week 530 9. Columns: Theory of columns

Week 2 5 Eulers Formula & Rankine Formula

Week 2 7 House Test Week 3 12 10. Analysis of trusses by methods of section and joints

Week 3 JULY |Numerical on methods of section.

|Numerical on methods of joints.

14

Week 4 19

Week 5 26 Revision of all the chapter. Week 5 28 Revision of all the chapter.

Note: Lesson Plan is Tentative, subject to availability of time, students and faculty.

Signaturëror Teacher (Er. Ishan Sharma)

Signatlre pf H.O.D

(Er. Tanmay Kapoor)