PVC Parallel Bars Teacher Key
Teacher Reference & Solution Key Grade 9–12 Science of Technology
PVC Parallel Bars Teacher Key
Teacher-Only Key
Parallel Bars Unit
Part 1: Tool & Material Matching Answer Key (Companion Worksheet)
9 Worksheet Items
| # | Item / Tool Name | Key | Specification & Identification Note |
|---|
| 1 | Husky ratcheting PVC cutter | C | Cuts pipe squarely and cleanly without crushing. |
| 2 | Stanley 12 ft tape measure | F | Measures cut lengths and confirms overall project dimensions. |
| 3 | 1-1/4 inch Schedule 40 PVC pipe | H | 1-1/4 inch Schedule 40 PVC pipe per specification. |
| 4 | 1-1/4 inch 90-degree PVC elbow | A | Female slip sockets; connects horizontal top handles to vertical base risers. |
| 5 | 1-1/4 inch PVC socket tee | I | Branch socket connects vertical riser; run sockets receive lateral base feet. |
| 6 | FORMUFIT external end caps | E | External slip end caps to seal base pipe ends and protect floor surfaces. |
| 7 | Oatey purple primer and clear cement combo | G | Purple primer prepares PVC surfaces; clear solvent cement chemically welds joints. |
| 8 | Ergodyne work gloves | B | Hand protection for handling tools, pipe cutting, and deburring. |
| 9 | 3M assorted sandpaper | D | Smooths cut pipe edges and deburrs inner and outer ridges. |
Part 2: FORMUFIT Bill of Materials (Per 1 Pair / 2 Push-Up Bars)
Official Plan Page 4
Official Plan Diagram (Page 4) Fittings Spec
| Component | Qty | Specification |
|---|
| 1-1/4" 90-Degree Elbows | 4 | Socket (Slip x Slip) |
| 1-1/4" Socket Tees | 4 | All-Socket Slip |
| External End Caps | 8 | 1-1/4" Flat Bottom |
| 1-1/4" PVC Pipe | 10 ft | 8 ft used (2 ft remainder) |
Part 3: Complete Cut List & Stock Specification
Official Plan Page 5
Official Plan Diagram (Page 5) Pipe & Cut Spec
| Qty | Cut Length | Assembly Component | Subtotal |
|---|
| 12 | 6 inches | Base Feet & Risers | 72" (6 ft) |
| 2 | 12 inches | Top Handles | 24" (2 ft) |
| Total Consumed (from 10 ft length) | 96" (8 ft) | | |
Cut Allocation Summary: 14 total pieces. Exactly 8 feet cut from one 10 ft pipe length, leaving 2 feet of remaining pipe.
Plan Source: https://assets.formufit.com/plans/pdfs/FORMUFIT_Push-Up_Handles.pdf
Page 1 of 2 • Teacher Key & Specs
Assembly & Assessment Guide Official FORMUFIT Sequence
Assembly Sequence & Scoring Guide
100 PT RUBRIC
Parallel Bars Unit
Assembly Sequence (Official Diagrams from FORMUFIT Pages 6–9)
Teacher Approval Checkpoint Required Before Solvent Welding
STEP 1 Diagram p. 6
Attach elbows to the two 12-inch top handles.
STEP 2 Diagram p. 7
Use tees and twelve 6-inch pieces to make four bases.
STEP 3 Diagram p. 8
Add eight end caps onto base feet.
STEP 4 Diagram p. 9
Attach the handles to the bases.
STEP 5
Dry-Fit Checkpoint: Dry-fit complete assembly and obtain teacher approval before applying any cement.
STEP 6
Solvent Welding: Join one joint at a time with purple primer followed by clear cement.
Cut Accuracy Scoring Matrix (50 Points of Grade)
Each cut begins at 100; subtract 5 points per 1/16 inch of absolute error; minimum 0; team accuracy is the average of all piece scores.
Exact Cut 0" off 100 Pts
1/16" Error 1/16 off 95 Pts
1/8" Error 1/8 off 90 Pts
3/16" Error 3/16 off 85 Pts
1/4" Error 1/4 off 80 Pts
Master Assessment Rubric (100 Points Total)
Rubric Guidance
| Evaluation Category | Points | Criteria & Observable Standard | Score |
|---|
| Accuracy | 50 | Team accuracy is the average of all piece scores on a 100-point scale (each cut begins at 100 minus 5 per 1/16" error). Accuracy rubric points = team average piece score divided by 2. | ___ / 50 |
| Deburred and labelled | 10 | All pipe cut ends deburred and pieces labelled before assembly. | ___ / 10 |
| Symmetry, level and stability | 10 | Assembled apparatus rests flat and stable on a level surface without wobble; symmetrical alignment. | ___ / 10 |
| Joint quality and correct sequence | 10 | Followed specified assembly sequence; purple primer followed by clear cement applied at each joint. | ___ / 10 |
| Teacher-approved 10 controlled push-ups | 10 | Finished apparatus safely supports 10 controlled push-ups in a teacher-approved test. | ___ / 10 |
| Clean workspace and returned tools | 10 | Workspace cleaned and all tools returned to designated shop storage. | ___ / 10 |
| Total Score | 100 | Sum of all evaluation categories. | ___ / 100 |
Teacher Notes and Rework Decisions
Shop Inspection Record
Student / Team
Step 5 Dry-Fit Approval
Approved Sign: ____
10 Push-Up Test
Supported Sign: ____
Final Total
PTS: ____ Date: ____
Teacher Notes & Rework Decisions: Instructor Observations
Plan Source: https://assets.formufit.com/plans/pdfs/FORMUFIT_Push-Up_Handles.pdf
Page 2 of 2 • Assembly & Scoring Rubric
