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Floor Joist Capacities

Carrying capacities of domestic timber floor joists - Grade C - metric units.

Floor joists - load capacity

Floor Joist Capacities - max working load 3.0 kN/m2

Floor joist capacities for timber grade C 18, C 24 and C 30 - joist center space ranging 300 to 600 mm - are indicated in the diagram below.

Floor joist load capacity - max working load 3 kN/m2

Floor Joist Capacity - max working load 2.0 kN/m2

Floor joist capacities for timber grade C 18, C 24 and C 30 - joist center space ranging 300 to 600 mm - are indicated in the diagram below.

Floor joist load capacity  - max working load 2 kN/m2

The strength classes C 16, C 24 and C 30 referes to Eurocode 5 and BS 5268.

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