Structures 1
Contents
STRUCTURES I
MODULE UNIT DESCRIPTION
This module involves the analysis of forces and design of structural elements encountered in construction.
PURPOSE
The module unit is designed to equip the trainee with knowledge skills and attitudes in the analysis of forces of structural elements.
SPECIAL REQUIREMENTS
The trainee should have a KCSE with knowledge in Mathematics and Physics.
GENERAL OBJECTIVES
At the end of the module unit, the trainee should be able to:
 Understand the behavior of structural materials
 Understand principles of analyzing forces in determinate and indeterminate
 Appreciate need for analysis in the design of building structural members
 Generate structural drawings from the structural designs
MODULE UNIT SUMMARY AND TIME ALLOCATION
CODE  SUMMODULE UNIT  CONTENT  TIME(HRS) 
21.1.1 

9  
21.1.2  COMPOSITE MATERIALS 

7 
21.1.3  TEMPERATURE STRESSES AND STRAIN 

5 
21.1.4  TYPES OF SUPPORRTS AND LOADINGS 

4 
21.1.5 

7  
21.1.6 

6  
21.1.7 

5  
21.1.8 

7  
21.1.9 

6  
21.1.10 

6  
TOTAL  55 
MODULE UNIT: PROPERTIES OF MATERIALS
SUBMODULE UNIT: STRESS AND STRAIN
THEORY
Specific Objectives
By the end of the submodule unit, the trainee should be able to:
 define terms used in properties of materials
 calculation of stress and strain
 state Hooke’s law
 describe the stress – strain relationship
Content
 Definitions
plasticity elasticity stress modulus of elasticity bulk modulus yield modulus
 Calculations
stress strain
 Stating Hooke’s law
 Describing the stressstrain relationship
 Sketching the stressstrain graph
 Modulus of rigidity
 Working stress and ultimate stress
 Factor of safety
PRACTICE
Specific Objectives
By the end of the submodule unit, the trainee should be able to:
 Set the apparatus for stress, strain experiment
 Carry our experiment for stress and strain
 Carry out tensile test for ferrous metals
 Plot the stress strain graph
 Calculate stress and strain