About this calculator
A RhinoBoard drywall partition on Donn UltraSTEEL metal studs: boards for one or both sides, studs, floor and head track, screws and joint tape.
How it’s calculated
Studs = partition length ÷ 0.6 m, plus one. Boards = partition area (less door openings) × sides × (1 + waste) ÷ (1.2 m × board length). Screws are counted at 220 mm centres up every stud on each boarded side; tape runs up every vertical joint. Gyproc’s drywall guidelines give the 600 mm stud centres, the 220 mm screw centres and 25 mm sharp point screws.
Worked example
With these inputs:
- Wall height
- 2.4 m
- Door openings in the partition
- 0
- Partition length
- 4 m
- Board on
- Both sides
- Board length
- 2,700 mm
- Waste allowance
- 12%
the result is:
- RhinoBoard sheets
- 7 sheets
- Partition area (one side, net)
- 9.6 m²
- Studs at 600 mm centres
- 8
- Track (top and bottom)
- 8 lin m
Tips from the trade
- Centre vertical joints on studs, and stagger the joints on the two sides of the wall.
- Fit door openings with load-bearing studs and a timber insert so the frame carries the door’s weight.
- Longer sheets mean fewer joints but need more hands.
- Don’t deduct small openings. The offcuts rarely get used.
Common questions
How many RhinoBoards for a 4 m partition?
A 4 m × 2.4 m partition boarded on both sides with 2,400 mm boards takes 8 boards (19.2 m² × 1.12 ÷ 2.88 m² = 7.5, rounded up), with 8 studs.
Results are estimates for planning and pricing. Check quantities against your drawings, the manufacturer’s data and SANS 10400 (the National Building Regulations) and your local municipality before ordering.