BCGBC4010A > Floor systems > Sub-floor framing - Floor joists

Sub-floor framing - Floor joists

Introduction
Position
Spacing
Span
Notching
Joints
Supporting fitted floorboards
Supporting platform floors
Deep floor joists
Size and grade

Span

Floor joists span across bearers by a single span or continuous spans.

Two diagrams of floor joists. The first diagram the floor joists is over two bearers. The second diagram the floor joists is over three or more bearers.

AS 1684.2 'Residential timber framed construction' provides a span table for selecting floor joists.