Statics and Strength of Materials
I. Course Prefix/Number: MEC 230
Course Name: Statics and Strength of Materials
Credits: 3 (3 lecture; 0 lab)
III. Course (Catalog) Description
Course covers concepts of statics and strength of materials. Content includes forces, force components, trusses, centroids, equilibrium, stress and strain, defection of beams, torsion, and various types of joints. Recommended: MAT 110 or MAT 114 or higher-level MAT course.
IV. Learning Objectives
In the statics part of the course, students will learn:
- mathematical representation of forces
- effects of forces on various physical entities
- relationship between forces and geometry of object necessary for maintaining equilibrium
In the strength of material part, students will learn:
- stress and strain relationship
- effect of forces on the behavior of material
- prescribing material and geometry of physical entities to satisfy the design criteria
V. Academic Integrity and Student Conduct
• plagiarism (turning in work not written by you, or lacking proper citation),
• falsification and fabrication (lying or distorting the truth),
• helping others to cheat,
• unauthorized changes on official documents,
• pretending to be someone else or having someone else pretend to be you,
• making or accepting bribes, special favors, or threats, and
• any other behavior that violates academic integrity.
There are serious consequences to violations of the academic integrity policy. Oakton's policies and procedures provide students a fair hearing if a complaint is made against you. If you are found to have violated the policy, the minimum penalty is failure on the assignment and, a disciplinary record will be established and kept on file in the office of the Vice President for Student Affairs for a period of 3 years.
Please review the Code of Academic Conduct and the Code of Student Conduct, both located online at
VI. Sequence of Topics
1.1 Force 1.2 Effects of a Force 1.3 Characteristics of a Force 1.4 Components of a Force 1.5 Moment of a Force 1.6 Principle of Moments
- EQUILIBRIUM OF BODIES
2.1 Equilibrium 2.2 The Free-Body Diagram 2.3 Solution of Equilibrium Problems by Use of Moment Equations 2.4 Solution of Equilibrium Problems by Use of Equations for Sums of Components 2.5 Solution of Equilibrium Problems by Use of Force Polygons 2.6 Equilibriums of Shafts 2.7 Truss 2.8 Two-Force Members 2.9 Truss Analysis by the Method of Joints 2.10 Flexible Cable 2.11 Parabolic Cables 2.12 Friction 2.13 Coefficient of Friction 2.14 Belt Friction
- SIMPLE STRESS AND STRAIN
3.1 Stress 3.2 Tension and Tensile Stress 3.3 Compression and Compressive Stress 3.4 Shear and Shearing Stress 3.5 Strain in Tension and Compression 3.6 Strain in Shear 3.7 Relation between Stress and Strain 3.8 Proportional limit and Ultimate Strength 3.9 Working Stress and Factor of Safety 3.10 How to Determine the Sizes of Members 3.11 Thermal Deformation and Stress
- CENTROID OF AN AREA
4.1 Centroid 4.2 Centroids of Simple Areas 4.3 Moment of a Simple Area 4.4 Moment of a Composite Area 4.5 Centroid of a Composite Area
- MOMENT OF INERTIA OF AN AREA
5.1 Moment of Inertia 5.2 Moments of Inertia of Simple Area 5.3 Parallel-Axis Theorem 5.4 Moments of Inertia of Composite Areas
- STRESSES IN BEAMS
6.1 Beam Types 6.2 Reactions on Beams 6.3 Shear in Beams 6.4 Shear Diagrams 6.5 Bending Moment 6.6 Moment Diagrams 6.7 Maximum Bending Moment 6.8 Bending Stress, the Flexure Formula 6.9 The Section Modulus 6.10 Design of Circular Beams 6.11 Design of Rectangular Beams 6.12 Beams of Standard Shapes 6.13 Design of Beams of Standard Shapes 6.14 Shearing Stress in Beams 6.15 Shearing Stress in Rectangular Beams 6.16 Shearing Stress in Circular Beams 6.17 Shearing Stress in Beams of Standard Shapes
- BENDING MOMENT COMBINED WITH TENSION OR COMPRESSION
7.1 Calculation of the Axial Stress 7.2 Calculation of the bending Stress 7.3 Bending Stress Combined with Axial Stress
- DEFLECTIONS OF BEAMS
8.1 Deflections 8.2 Maximum Deflection of a Beam with a concentrated Load at the Center 8.3 Maximum Deflection of a Beam with a Uniformly Distributed Load 8.4 Formulas for Beam Deflection 8.5 Beam Deflection by Superposition
- STATICALLY INDETERMINATE BEAMS
9.1 Types of Supports and Reactions 9.2 Fixed Beams 9.3 Continuous Beams
- MEMBERS SUBJECTED TO TORSION
10.1 Torque 10.2 Torsional Shearing Stress in a Solid Circular Bar 10.3 Torsional Shearing Stress in a Hollow Circular Bar 10.4 How to Choose the Diameter of a Solid Circular Bar 10.5 Angle of twist of a Circular Bar 10.6 Torsional Shearing Stress in a Rectangular Bar 10.7 Torsional Shearing Stress in Thin-Walled Open Sections 10.8 Torsional Shearing Stress in Thin-Walled Closed Sections/td>
- BENDING MOMENT COMBINED WITH TORQUE
11.1 Torque Diagrams 11.2 Moment Diagrams for Shafts 11.3 Maximum Shearing Stress in a Solid Circular Shaft Subjected to Both Bending and Moment and Torque 11.4 How to Find the Diameter of a Solid Circular Shaft under Bending Moment and Torque
- COMPRESSION MEMBERS
12.1 Radius of Gyration 12.2 Slenderness Ratio 12.3 Short Compression Members 12.4 Intermediate Columns 12.5 Straight-Line Colum Formulas 12.6 Parabolic Column Formulas 12.7 Gordon-Rankine Column Formulas 12.8 Slender Columns
- RIVETED, BOLTED, AND WELDED JOINTS
13.1 Rivets and Bolts 13.2 Shearing Stresses in Rivets and Bolts 13.3 Tensile Stress in Riveted and Bolted Joints 13.4 Bearing Stress in Rivets and Bolts 13.5 Standard Sizes of Rivets and Bolts 13.6 Standard Sizes of bars, Strip, Sheet, and Plate 13.7 Design of Simple Connections 13.8 How to Space Rivets and Bolts 13.9 Welding 13.10 Arc Welding 13.11 Gas Welding 13.12 Butt Welds 13.13 Fillet Welds 13.14 Spot Welds 13.15 Thin-Walled Pressure Vessels 13.16 Beam Bearing Plates
- REPEATED STRESS AND STRESS CONCENTRATION
14.1 Examples of Repeated Stress 14.2 Effect of Repetition of Stress on the Strength of a Material 14.3 Values of Endurance Limit for Completely Reversed Bending Stress 14.4 Factor of Safety-Working Stress 14.5 Design of Members Subjected to Repeated Stress
VII. Methods of Instruction
Lecture demonstration of drawing techniques with a hands on focus emphasizing the solution of drawing problems.
Course may be taught as face-to-face, hybrid or online course.
VIII. Course Practices Required
Course may be taught as face-to-face, media-based, hybrid or online course.
IX. Instructional Materials
Textbook: Statics and Strength of Materials, by C.O. Harris, John Wiley and Sons
X. Methods of Evaluating Student Progress
Drawings will be graded according to standard drawing conventions provide on assignment sheets, notes and handouts. Late submissions will incur a 10% late fee.
F Below 60%
XI. Other Course Information
If you have a documented learning, psychological, or physical disability you may be entitled to reasonable academic accommodations or services. To request accommodations or services, contact the Access and Disability Resource Center at the Des Plaines or Skokie campus. All students are expected to fulfill essential course requirements. The College will not waive any essential skill or requirement of a course or degree program.
Oakton Community College is committed to maintaining a campus environment emphasizing the dignity and worth of all members of the community, and complies with all federal and state Title IX requirements.
Resources and support for
- pregnancy-related and parenting accommodations; and
- victims of sexual misconduct
Resources and support for LGBTQ+ students can be found at www.oakton.edu/lgbtq.