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SOUTH AFRICAN QUALIFICATIONS AUTHORITY 
REGISTERED UNIT STANDARD: 

Use advanced 3D computer modelling techniques in the production of detail drawings and other data leading to the fabrication of commercial and industrial structural steel buildings 
SAQA US ID UNIT STANDARD TITLE
114204  Use advanced 3D computer modelling techniques in the production of detail drawings and other data leading to the fabrication of commercial and industrial structural steel buildings 
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 PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 5  Level TBA: Pre-2009 was L5  28 
REGISTRATION STATUS REGISTRATION START DATE REGISTRATION END DATE SAQA DECISION NUMBER
Reregistered  2018-07-01  2023-06-30  SAQA 06120/18 
LAST DATE FOR ENROLMENT LAST DATE FOR ACHIEVEMENT
2024-06-30   2027-06-30  

In all of the tables in this document, both the pre-2009 NQF Level and the NQF Level is shown. In the text (purpose statements, qualification rules, etc), any references to NQF Levels are to the pre-2009 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 
Demonstrate an understanding of advanced 3D computer modelling terminology and techniques and use 3D computer modelling programmes to create models for steel structures, create members for structural steel assemblies, load connections to members for structural steel assemblies, create member marks/numbers and lists for assemblies, create plot files for detail drawings for structural steel assemblies, create plot files for general arrangement and marking plan drawings of steel structures in accordance with design calculations and specifications.

Learners who master the applied competence described in this unit standard will contribute to enhanced communication processes between draughtsmen and their respective clientele by producing accurate, neat and clearly defined drawings that show the assembly details of the products and structures from all sides, with exact dimensions, the specific materials to be used, procedures to be followed and other information needed to carry out the job.
The contribution to The National Skills Development Strategy is the key developmental interface between learners and new competencies to be achieved.The competence of detailing structural steelwork assemblies using advanced 3D modelling systems for the fabrication of commercial and industrial structures complements the associated competencies contained in this qualification and contributes to the development of a professional community of Structural Steel Draughtsmen.

The above statement further supports the notion of portability of skills and transformation within industry in that the traditional competencies of critical evaluation and organised layout of each assembly when applied to new and changing technologies will lead to the production of computer-aided detailed drawings that ensure Occupational Health and Safety and cost-effective production is enhanced through a keen application of attention to detail. 

LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
The following knowledge, skills attitude and / or equivalent:
  • Mathematical numeracy (geometry and trigonometry) at NQF Level 4 or equivalent
  • Draughting skills (freehand and 3-dimensional)
  • Communication (written and verbal) at NQF Level 4 or equivalent
  • Basic computer literacy - NQF Level 3? The learner will have mastered the core competencies of this qualification 

  • UNIT STANDARD RANGE 
    The range of relevant information from client arrangement drawings includes but is not limited to:
  • Grid lines, grid levels, position and levels of all columns and floors, layout of roof and sides, section sizes of all members
    Range of information relevant to the 3D model includes but is not limited to:
  • Drawings (plot files), material lists, bolt lists
    Range of connection types to suit joint requirements includes but are not limited to:
  • Beam end connections, bracing connections, column base plates, portal haunch, portal apex
    The range of connection component checks include but are not limited to:
  • Shear strength, bearing strength, bolt strength and welding strength
    The range of members to be marked includes but is not limited to:
  • Picked members, phase or partial database, entire database
    Range of various lists include but are not limited to:
  • Assembly lists, section size summary lists, shipping lists, shop bolt location lists, shop bolt summary lists, site bolt location lists, site bolt summary lists, list of welds
    The range of assemblies to be detailed includes but is not limited to:
  • Picked assemblies, assemblies within a partial database (phase), assemblies within an entire database
    The range of drawing parameters includes but is not limited to: drawing sheet size, scale, dimensions, views and sections, line types, location symbols. 

  • Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Demonstrate an understanding of advanced 3D computer modelling terminology and techniques. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    1. Specific computer terminology in relation to tasks required for setting up 3D models from the programme manual is identified and explained. 

    ASSESSMENT CRITERION 2 
    2. Action dialogue boxes in relation to specific tasks for the creation of 3D models from the on-screen menu are located, explained and demonstrated. 

    ASSESSMENT CRITERION 3 
    3. The procedures for starting a new 3D model of a steel structure in regard to allocating a name and creating 3D modelling grid requirements for viewing on screen are described and illustrated. 

    ASSESSMENT CRITERION 4 
    4. The database library of the various structural steel sections is discussed and use of the library is demonstrated. The orientation and placing of structural steel sections in the 3D model are defined and demonstrated. 

    ASSESSMENT CRITERION 5 
    5. The use of a flexible library database for various structural steel connections is discussed. The use of standard connections is explained and the modification of parameters demonstrated in accordance with connection requirements. 

    SPECIFIC OUTCOME 2 
    Create basic 3D models for steel structures. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    1. All relevant information from the client arrangement drawings, contract specifications and design calculations are identified. 

    ASSESSMENT CRITERION 2 
    2. A 3D modelling program is started and the purpose of the automatically created directory tree in relation to the storage of information relevant to the 3D model is explained. 

    ASSESSMENT CRITERION 3 
    3. A 3D modelling grid is created using the grid line and grid level data retrieved from client drawings and information. 

    ASSESSMENT CRITERION 4 
    4. A hard copy of the 3D modelling grid is generated and checked against client drawings to ensure geometric compliance with client requirements. 

    ASSESSMENT CRITERION 5 
    5. The method of accessing, saving and exiting a 3D model is understood and demonstrated. 

    SPECIFIC OUTCOME 3 
    Create members for structural steel assemblies in a 3D model. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    1. Members to be created are identified from the arrangement drawing. 

    ASSESSMENT CRITERION 2 
    2. The planes in which members are located in the model are accessed and viewed on screen using the 3D modelling grid. The principal node points determining the member locations are identified. 

    ASSESSMENT CRITERION 3 
    3. The member section sizes are selected from the section library dialogue box from the on-screen menu and the parameters for the member orientations are set. 

    ASSESSMENT CRITERION 4 
    4. The members are placed between their principal node points on the plane. 

    ASSESSMENT CRITERION 5 
    5. Members are checked on screen in the model and correct section sizes, locations and orientations are verified. 

    SPECIFIC OUTCOME 4 
    Load connection to members for structural steel assemblies in 3D models. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    1. Intersecting members are selected and the joint requirements assessed i.e. weld or bolt. 

    ASSESSMENT CRITERION 2 
    2. Connection types to suit joint requirements are identified. 

    ASSESSMENT CRITERION 3 
    3. Strength checks for connection components are conducted in accordance with SABS 0162-1: 1993 and SABS 0162-2:1993. 

    ASSESSMENT CRITERION 4 
    4. Connection types are selected from the connection dialogue box from the on-screen menu and suitable connections selected and connection parameters are modified, if necessary, in accordance with the requirements of the specific connections. 

    ASSESSMENT CRITERION 5 
    5. Connections are applied by selecting connecting partners in correct sequences. 

    ASSESSMENT CRITERION 6 
    6. Connections are checked on screen in the model to verify the connection parameters and clash detection is executed. 

    SPECIFIC OUTCOME 5 
    Create member marks/numbers and lists for assemblies in 3D models. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    1. Members that are to be marked are identified and selected. 

    ASSESSMENT CRITERION 2 
    2. The marking dialogue box is accessed from the on-screen menu and the mark parameters for the main and secondary members are set and applied. 

    ASSESSMENT CRITERION 3 
    3. Preliminary assembly lists are generated using the relevant dialogue box from the on-screen menu to determine the existence of any unattached secondary members. 

    ASSESSMENT CRITERION 4 
    4. The model is corrected and the marking/numbering process is repeated for any unattached secondary members identified. 

    ASSESSMENT CRITERION 5 
    5. Various lists are generated using the relevant dialogue box from the on-screen menu. 

    SPECIFIC OUTCOME 6 
    Create plot files for detail drawings for structural steel assembles in 3D models. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    1. Assemblies to be detailed are identified and selected. 

    ASSESSMENT CRITERION 2 
    2. The drawing dialogue box is accessed from the on-screen menu and the drawing parameters for the assemblies are set and applied. 

    ASSESSMENT CRITERION 3 
    3. Detail drawings are viewed on screen, verified and enhanced using 2D methods in relation to dimensions, weld symbols, additional cross sections if required, notes etc. in accordance with industry standards and organisational requirements. 

    ASSESSMENT CRITERION 4 
    4. Hard copies of detail drawings are plotted/printed and distributed in accordance with project and organisational requirements. 

    SPECIFIC OUTCOME 7 
    Create plot files for general arrangement and marking plan drawing of steel structures in 3D models. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    1. General arrangement drawings and marking plans for various planes are generated using selected parameters in the relevant dialogue box from the on-screen menu. 

    ASSESSMENT CRITERION 2 
    2. General arrangement drawings and marking plans are viewed on screen and enhanced using 2D methods in accordance with industry standards and organisational requirements. 

    ASSESSMENT CRITERION 3 
    3. Hard copies of general arrangement drawings and marking plans are plotted/printed and distributed in accordance with project and organisational requirements. 

    ASSESSMENT CRITERION 4 
    4. Perspective views, of part of the 3D model, or the entire 3D model, are generated using selected parameters in the relevant dialogue box from the on-screen menu. 

    ASSESSMENT CRITERION 5 
    5. Hard copies of the perspective views are plotted/printed and distributed in accordance with project and organisational requirements. (Perspective views are used extensively by steel erectors as a visual aid in the construction process). 


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
  • Anyone assessing a learner or moderating the assessment of a learner against this unit standard must be registered as an assessor with the CETA - ETQA.
  • Any institution offering learning that will enable the achievement of this unit standard must be accredited as a provider with the CETA - ETQA.
  • CETA - ETQA or other ETQA`s, who have a Memorandum of Understanding in place with CETA-ETQA, would be responsible for moderation of learner achievements of learners who meet the requirements of this qualification. 

  • UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
  • Advanced 3D computer modelling terminology and techniques
  • Techniques for creating basic 3D computer models for steel structures
  • Techniques for creating members for structural steel assemblies in 3D computer models
  • Techniques for loading connections to members for structural steel assemblies in 3D computer models
  • Techniques for creating member marks/numbers and lists for assemblies in 3D computer models
  • Techniques for creating plot files for detail drawings for structural steel assemblies in 3D computer models
  • Techniques for creating plot files for general arrangement and marking plan drawings of steel structures in 3D computer models 

  • UNIT STANDARD DEVELOPMENTAL OUTCOME 
    N/A 

    UNIT STANDARD LINKAGES 
    N/A 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO SCIENCE 
    Demonstrate scientific and technological competence

    Specific outcomes

    1. Demonstrate an understanding of advanced 3d computer modelling terminology and techniques

    Assessment Criteria
    1.1. Specific computer terminology in relation to tasks required for setting up 3D models from the programme manual is identified and explained
    1.2. Action dialogue boxes in relation to specific tasks for the creation of 3D models from the on-screen menu are located, explained and demonstrated
    1.3. The procedures for starting a new 3D model of a steel structure in regard to allocating a name and creating 3D modelling grid requirements for viewing on screen are described and illustrated
    1.4. The database library of the various structural steel sections is discussed and use of the library is demonstrated. The orientation and placing of structural steel sections in the 3D model are defined and demonstrated
    1.5. The use of a flexible library database for various structural steel connections is discussed. The use of standard connections is explained and the modification of parameters demonstrated in accordance with connection requirements

    2.Create basic 3d models for steel structures

    2.1. All relevant information from the client arrangement drawings, contract specifications and design calculations are identified
    2.2. A 3D modelling program is started and the purpose of the automatically created directory tree in relation to the storage of information relevant to the 3D model is explained
    2.3. A 3D modelling grid is created using the grid line and grid level data retrieved from client drawings and information
    2.4. A hard copy of the 3D modelling grid is generated and checked against client drawings to ensure geometric compliance with client requirements
    2.5. The method of accessing, saving and exiting a 3D model is understood and demonstrated

    3. Create members for structural steel assemblies in a 3d model

    3.1. Members to be created are identified from the arrangement drawing
    3.2. The planes in which members are located in the model are accessed and viewed on screen using the 3D modelling grid. The principal node points determining the member locations are identified
    3.3. The member section sizes are selected from the section library dialogue box from the on-screen menu and the parameters for the member orientations are set
    3.4. The members are placed between their principal node points on the plane
    3.5. Members are checked on screen in the model and correct section sizes, locations and orientations are verified

    4. Load connections to members for structural steel assemblies in 3d models

    4.1. Intersecting members are selected and the joint requirements assessed i.e. weld or bolt
    4.2. Connection types to suit joint requirements are identified
    4.3. Strength checks for connection components are conducted in accordance with SABS 0162-1: 1993 and SABS 0162-2:1993
    4.4. Connection types are selected from the connection dialogue box from the on-screen menu and suitable connections selected and connection parameters are modified, if necessary, in accordance with the requirements of the specific connections
    4.5. Connections are applied by selecting connecting partners in correct sequences
    4.6. Connections are checked on screen in the model to verify the connection parameters and clash detection is executed

    5. Create member marks/numbers and lists for assemblies in 3d models

    5.1. Members that are to be marked are identified and selected
    5.2. The marking dialogue box is accessed from the on-screen menu and the mark parameters for the main and secondary members are set and applied
    5.3. Preliminary assembly lists are generated using the relevant dialogue box from the on-screen menu to determine the existence of any unattached secondary members
    5.4. The model is corrected and the marking/numbering process is repeated for any unattached secondary members identified
    5.5. Various lists are generated using the relevant dialogue box from the on-screen menu

    6. Create plot files for detail drawings for structural steel assemblies in 3d models

    6.1.Assemblies to be detailed are identified and selected
    6.2. The drawing dialogue box is accessed from the on-screen menu and the drawing parameters for the assemblies are set and applied
    6.3. Detail drawings are viewed on screen, verified and enhanced using 2D methods in relation to dimensions, weld symbols, additional cross sections if required, notes etc. in accordance with industry standards and organisational requirements
    6.4. Hard copies of detail drawings are plotted/printed and distributed in accordance with project and organisational requirements

    7. Create plot files for general arrangement and marking plan drawings of steel structures in 3d models

    7.1. General arrangement drawings and marking plans for various planes are generated using selected parameters in the relevant dialogue box from the on-screen menu
    7.2. General arrangement drawings and marking plans are viewed on screen and enhanced using 2D methods in accordance with industry standards and organisational requirements
    7.3. Hard copies of general arrangement drawings and marking plans are plotted/printed and distributed in accordance with project and organisational requirements
    7.4. Perspective views, of part of the 3D model, or the entire 3D model, are generated using selected parameters in the relevant dialogue box from the on-screen menu
    7.5. Hard copies of the perspective views are plotted/printed and distributed in accordance with project and organisational requirements. (Perspective views are used extensively by steel erectors as a visual aid in the construction process) 

    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 
    Supplementary information:

    Specified requirements
    Specified requirements include legal and legislative specific requirements and are contained in one or more of the following documents:

    Credits
    Total hours required by the learner to achieve the required outcomes:

    Activity Hours
    Classroom learning 80
    On-the-job learning 160
    Self directed learning
    Coaching required 40
    Other
    TOTAL 280 

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Elective  22774   National Diploma: Rubber Technology  Level 5  NQF Level 05  Reregistered  2023-06-30  MERSETA 
    Elective  48636   National Diploma: Structural Steelwork Detailing  Level 5  NQF Level 05  Reregistered  2023-06-30  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. AFRICAN ACAD.FOR COM.ASSIS.ENGINEERING 
    2. African Academey for the Built Environment NPC 
    3. centurion akademie 
    4. 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.