Grade 8 - Term 1 and 3 - Mechanical Systems and Control - Mini-PAT 2 - Practical Assessment Task

Oct 29, 2026

Grade 8 Mechanical Systems and Control Mini-PAT 2 (Practical Assessment Task) focusing on mine shaft headgear for a platinum mining scenario. Learners answer investigation questions about mine headgear, the winding house, sheave wheel, head frame functions, and winch differences, then perform calculations for drum rotation effects on cage drop and counterweight lift. The task also requires design-brief writing, specifications and constraints, team evaluation of sketches, and production of detailed 3D isometric and 2D working drawings with scale and dimensions.

LanguageEnglish

CategoryExam

FormatPDF

Pages15

Reading Time38 min

AccessFree to download

Activity 1: Investigation Skills

Investigation: Mine shaft headgear, head frame and winch

Activity 2: Design Skills

2.1 Initial idea sketches

2.2 Design brief, specifications and constraints

Activity 3: Evaluation Skills

Team simulation and selection of best idea

Activity 4: Making Skills

4.1 3D isometric drawing with dimensions

4.2 2D working drawing with views and dimensions

GRADE 8 TERM 1 AND 3 MECHANICAL SYSTEMS AND CONTROL MINI-PAT ( PRACTICAL ASSESSMENT TASK) Name and Surname: Class: Mark: /70 PROBLEM STATEMENT / SCENARIO/ CONTEXT Platinum, a very valuable metal, has been found on land belonging to a tribe in a rural area. Samples show that the platinum is only 500m below the surface. An international and South African company joint venture company, called Platinum Stars, has decided to invest money in this project. They want to sink a shaft to the 500m point to take a few samples. They will decide on the best mining method. Your engineering company wants to submit a tender for the construction of the shaft headgear. The headgear must be able to transport miners and equipment 500m underground. It must also be able to lift platinum ore that weighs10ton back up to the surface. MINI PAT TERM 3 GRADES 8 TOTAL 70 ACTIVITY 1 (INVESTIGATION SKILLS) INVESTIGATION: Mine shaft headgear, head frame and winch Use the above picture and your own information to answer the following questions bellow: 1. What does the headgear of a mine do? ___________________________________________________________________ 2. What happens in the winding house of a mine? _________________________________________________________ 3. Explain what a sheave wheel is and what it does ? | 4. What does a head frame do? | | --- | | 5. Why do the legs on a head frame always slope towards the winch? | | 6. What do you call the two parts of lift that goes down a mine? | | 7. What do these two parts of the lift do? | | 8. What are the different between the two mine winches shown here ?(PG 94 SASOL BOOK 2 LEARNER BOOK) | 9. If the mine winch drum diameter is 6m, calculate how far the cage will drop for each single rotation of the drum. _____________________________________________________________________ | | | --- | | | | | 10. If the mine winch drum diameter is 6M, calculate how far the counterweight will lift for each single rotation of the drum. | | | --- | | | | | | | | | | | ACTIVITY 2 DESIGN SKILLS 2.1 Use the space bellow to sketch initial idea sketches to meet the requirements of given in the scenario. SKETCH | 1 SKET | | CH 2 | | --- | --- | --- | | | | | 2.2 Design brief with specifications ad constraints. 2.2.1. Write the design brief: ___________________________________________________________________ ___________________________________________________________________ 2.2.2. Write a list of specifications: ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ 2.2.3. Write a list of constraints. | | | --- | | | | | | | | | ACTIVITY 3 Evaluation SKILLS Simulation: Teams form mechanical engineering companies. 3. Evaluate sketches of individuals and select the best idea for the team tender bid. Selected idea(best idea) ACTIVITY 4 Making SKILLS Drawings for the shaft head-gear-each learner draws a 4.1 3D Isometric drawing of the selected design giving dimensions and draw to scale. 4.2 2D working drawing showing one or more views with dimensions and lines.

FAQs

What does the mine headgear do in the scenario?

The headgear is used to transport miners and equipment underground (to the 500m level). It also lifts platinum ore back up to the surface.

How do you calculate the cage drop for each single rotation of the winch drum?

Use the winch drum diameter (given as 6 m) to determine the distance moved per rotation, then apply it to how far the cage drops.

What drawings must learners produce for the selected shaft headgear design?

Learners must submit a 3D isometric drawing with dimensions and to scale, and a 2D working drawing showing one or more views with dimensions and lines.

Oct 29, 2026

Upload by Anna Hans