Curved Board Ceiling
A plasterboard ceiling bent to a circular arc, hung on curved rails with straight furring channels across them. Concave or convex shape and its radius, Span and depth of the room, Board thickness, Channel, rail and hanger spacing
Details
Category: Ceilings › Plasterboard › Curved Board Ceilings
By Huu Khanh Nguyen · Updated November 4, 2026
Parameters
| Name | Default | Unit |
|---|---|---|
| Clear Span | 4800 | mm |
| Depth | 3600 | mm |
| Soffit Height | 1500 | mm |
| Radius | 4000 | mm |
| Curvature | concave | |
| Board Thickness | 13 | mm |
| Board Finish | white | |
| Furring Channel Spacing | 500 | mm |
| Furring Channel Edge Distance | 150 | mm |
| Furring Channel Depth | 27.3 | mm |
| Rail Spacing | 1200 | mm |
| Rail Edge Distance | 200 | mm |
| Rail Depth | 26.35 | mm |
| Hanger Spacing | 1200 | mm |
| Hanger Distance From Rail End | 300 | mm |
| Wall Clearance At Member Ends | 10 | mm |
| Stock Length | 3600 | mm |
| Framing Finish | white | |
| Half Angle | Math.asin(span / (2 * radius)) | |
| Centre Height | curvature == 'concave' ? -radius * Math.cos(halfAngle) : radius | mm |
| Rail Radius | radius + (curvature == 'concave' ? 1 : -1) * (boardThickness + furringDepth) | mm |
| Rail Length | 2 * halfAngle * railRadius - 2 * endClearance | mm |