All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source. 
SOUTH AFRICAN QUALIFICATIONS AUTHORITY 
REGISTERED UNIT STANDARD: 
Demonstrate an understanding of strength of materials in relation to steel structures 
SAQA US ID  UNIT STANDARD TITLE  
114198  Demonstrate an understanding of strength of materials in relation to steel structures  
ORIGINATOR  
SGB Civil Engineering Construction  
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY  
  
FIELD  SUBFIELD  
Field 12  Physical Planning and Construction  Civil Engineering Construction  
ABET BAND  UNIT STANDARD TYPE  PRE2009 NQF LEVEL  NQF LEVEL  CREDITS 
Undefined  Regular  Level 5  Level TBA: Pre2009 was L5  20 
REGISTRATION STATUS  REGISTRATION START DATE  REGISTRATION END DATE  SAQA DECISION NUMBER  
Reregistered  20180701  20230630  SAQA 06120/18  
LAST DATE FOR ENROLMENT  LAST DATE FOR ACHIEVEMENT  
20240630  20270630 
In all of the tables in this document, both the pre2009 NQF Level and the NQF Level is shown. In the text (purpose statements, qualification rules, etc), any references to NQF Levels are to the pre2009 levels unless specifically stated otherwise. 
This unit standard does not replace any other unit standard and is not replaced by any other unit standard. 
PURPOSE OF THE UNIT STANDARD 
A person credited with this unit standard will be able to:

LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
The following knowledge, skills, attitude and/or equivalent:

UNIT STANDARD RANGE 
Direction and intensity of forces include but are not limited to:
Range of properties calculated for crosssections include but are not limited to: Area, centroidal axis, second moments of area (moment of inertia), radii of gyration, section moduli. Range of properties calculated for crosssections include but are not limited to: Range of various load conditions includes but are not limited to: Range of transverse load conditions (applied to one or both principle planes) include but are not limited to: Range of transverse load conditions (applied to one or both principle planes) include but are not limited to: Range of combined bending and axial load conditions include but are not limited to: Deflection calculations are limited to: 
Specific Outcomes and Assessment Criteria: 
SPECIFIC OUTCOME 1 
Define and calculate direct stresss and strain for structural steelwork applications. 
ASSESSMENT CRITERIA 
ASSESSMENT CRITERION 1 
1. Unit of force is defined and components of forces applied at various angles of application are calculated. 
ASSESSMENT CRITERION 2 
2. Direction and intensity of forces in structural members are defined. 
ASSESSMENT CRITERION 3 
3. Modulus of Elasticity (Hookes Law) is defined and its importance to structural behaviour discussed. 
ASSESSMENT CRITERION 4 
4. Simple stresses and strains for given direct forces and shear forces acting on a member are calculated for measured uniform crosssection. 
ASSESSMENT CRITERION 5 
5. Components of oblique stresses are resolved and calculated for measured uniform crosssection. 
ASSESSMENT CRITERION 6 
6. Complementary shear stresses are defined and calculated for measured uniform crosssection. 
ASSESSMENT CRITERION 7 
7. Young`s Modulus (direct), Modulus of Rigidity (shear) and Bulk Modulus (volume) are defined and calculated for measured uniform crosssection and the relevance of Poissons Ratio is explained. 
ASSESSMENT CRITERION 8 
8. Principal stresses and principal planes are explained and calculated for two perpendicular normal stresses. 
ASSESSMENT CRITERION 9 
9. Mohr`s Circle (stress circle) is applied to determine principle stresses and principle planes for two perpendicular normal stresses. 
SPECIFIC OUTCOME 2 
Define, calculate and illustrate material and mechanical properties for steel and steel sections. 
ASSESSMENT CRITERIA 
ASSESSMENT CRITERION 1 
1. Properties of metals (elasticity, ductility, brittleness and plasticity) are defined as specified in SABS 1431 as applicable to structural steels (e.g. Grade 300W). 
ASSESSMENT CRITERION 2 
2. Simple mechanical properties (stress/strain diagram, elastic limit, ultimate strength) are defined and illustrated. 
ASSESSMENT CRITERION 3 
3. The effects of suddenly applied loads and shock loads are explained. 
ASSESSMENT CRITERION 4 
4. Section properties for various crosssections are calculated. 
SPECIFIC OUTCOME 3 
Define, calculate and illustrate bending moments and shear forces for statically determinate beams. 
OUTCOME NOTES 
Define, calculate and illustrate bending moments and shear forces for statically determinate beams and cantilevers. 
ASSESSMENT CRITERIA 
ASSESSMENT CRITERION 1 
1. Moment of a force about a point is defined and static equilibrium for various loads and load components calculated. 
ASSESSMENT CRITERION 2 
2. Simple shear forces and reactions are defined for statically determinate beams and cantilevers subject to transverse loading about one plane. 
ASSESSMENT CRITERION 3 
3. Simple shear forces and reactions for various load conditions are calculated and shear force diagrams are drawn for statically determinate beams and cantilevers subject to transverse loading about one plane. 
ASSESSMENT CRITERION 4 
4. Simple bending moments are defined for statically determinate beams and cantilevers subject to transverse loading about one plane. 
ASSESSMENT CRITERION 5 
5. Simple bending moments for various load conditions are calculated and bending moment diagrams are drawn for statically determinate beams and cantilevers subject to transverse loading about one plane. 
SPECIFIC OUTCOME 4 
Define and calculate stresses in statically determinate beams and cantilevers. 
ASSESSMENT CRITERIA 
ASSESSMENT CRITERION 1 
1. Stresses from axial tension and compression loads are calculated for given section sizes. 
ASSESSMENT CRITERION 2 
2. Shear stresses for various transverse load conditions are calculated for given section sizes. 
ASSESSMENT CRITERION 3 
3. Bending stresses for various transverse load conditions are calculated for given section sizes. 
ASSESSMENT CRITERION 4 
4. Combined stresses for various bending and axial load conditions are calculated for given section sizes. 
ASSESSMENT CRITERION 5 
5. Deflections based on standard equations are defined and calculated. 
SPECIFIC OUTCOME 5 
Define, calculate and illustrate the euler theory for compression members. 
ASSESSMENT CRITERIA 
ASSESSMENT CRITERION 1 
1. Slenderness ratios in relation to length and member properties are defined. 
ASSESSMENT CRITERION 2 
2. Euler Theory in relation to length and compression capacity of members is defined. 
ASSESSMENT CRITERION 3 
3. The influence of end conditions in relation to slenderness ratio is defined and illustrated in accordance with South African Steel Construction Handbook (Limit States Design) Table 4.3. 
ASSESSMENT CRITERION 4 
4. The buckling strength of a compression member is calculated using the factored unit compressive resistance in accordance with South African Steel Construction Handbook (Limit States Design) Table 4.4 and discussed relative to Euler`s Theory. 
UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
UNIT STANDARD DEVELOPMENTAL OUTCOME 
N/A 
UNIT STANDARD LINKAGES 
N/A 
Critical Crossfield Outcomes (CCFO): 
UNIT STANDARD CCFO IDENTIFYING 
Identify and solve problems.
Evident in the following specific outcome: 1. Define and calculate direct stress and strain for structural steelwork applications. Assessment criteria: 2. Define, calculate and illustrate material and mechanical properties for steel and steel sections. Assessment criteria: 3. Define, calculate and illustrate bending moments and shear forces for statically determinate beams and cantilevers. Assessment criteria: 4. Define and calculate stresses in statically determinate beams and cantilevers. Assessment criteria: 5. Define, calculate and illustrate the Euler theory for compression members. Assessment criteria: 
UNIT STANDARD CCFO WORKING 
Work effectively with others. 
UNIT STANDARD CCFO ORGANISING 
Employ self management. 
UNIT STANDARD CCFO COLLECTING 
Manage information
Evident in the following specific outcome: 1. Define and calculate direct stress and strain for structural steelwork applications. Assessment criteria: 2. Define, calculate and illustrate material and mechanical properties for steel and steel sections. Assessment criteria: 3. Define, calculate and illustrate bending moments and shear forces for statically determinate beams and cantilevers. Assessment criteria: 4. Define, calculate and illustrate the Euler theory for compression members. Assessment criteria: 
UNIT STANDARD CCFO COMMUNICATING 
Communicate effectivly. 
UNIT STANDARD CCFO SCIENCE 
Demonstrate scientific and technological competence.
Evident in the following specific outcome: 1. Define and calculate direct stress and strain for structural steelwork applications. Assessment criteria: 2 .Define, calculate and illustrate material and mechanical properties for steel and steel sections. Assessment criteria: 3. Define, calculate and illustrate bending moments and shear forces for statically determinate beams and cantilevers. Assessment criteria: 4. Define and calculate stresses in statically determinate beams and cantilevers. Assessment criteria: 5. Define, calculate and illustrate the Euler theory for compression members. Assessment criteria: 
UNIT STANDARD CCFO CONTRIBUTING 
Understand contextual worldsystems.
Evident in the following specific outcomes: 1. Define and calculate direct stress and strain for structural steelwork applications. Assessment criteria: 2. Define, calculate and illustrate material and mechanical properties for steel and steel sections. Assessment criteria: 3. Define, calculate and illustrate the Euler Theory for compression members. Assessment criteria: Euler Theory in relation to length and compression capacity of members is defined. 
UNIT STANDARD ASSESSOR CRITERIA 
N/A 
REREGISTRATION HISTORY 
As per the SAQA Board decision/s at that time, this unit standard was Reregistered in 2012; 2015. 
UNIT STANDARD NOTES 
N/A 
QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
ID  QUALIFICATION TITLE  PRE2009 NQF LEVEL  NQF LEVEL  STATUS  END DATE  PRIMARY OR DELEGATED QA FUNCTIONARY  
Core  48636  National Diploma: Structural Steelwork Detailing  Level 5  NQF Level 05  Reregistered  20230630  CETA 
PROVIDERS CURRENTLY ACCREDITED TO OFFER THIS UNIT STANDARD: 
This information shows the current accreditations (i.e. those not past their accreditation end dates), and is the most complete record available to SAQA as of today. Some Primary or Delegated Quality Assurance Functionaries have a lag in their recording systems for provider accreditation, in turn leading to a lag in notifying SAQA of all the providers that they have accredited to offer qualifications and unit standards, as well as any extensions to accreditation end dates. The relevant Primary or Delegated Quality Assurance Functionary should be notified if a record appears to be missing from here. 
1.  Academic Institute of Excellence 
2.  AFRICAN ACAD.FOR COM.ASSIS.ENGINEERING 
3.  African Academey for the Built Environment NPC 
4.  centurion akademie 
5.  SAISC/DSE School of Draughting 
All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source. 