Example usage

Use 3 Number 47mm x 225mm Deep C24 Timber Joists Ridge Beam Timber Joists bolted together with M12 bolts at 600mm centres. Timber Ridge Beam to have a minimum end bearing length of 100mm.

Use 3 Number 47mm x 200mm Deep C24 Timber Trimmer Beam Timber Joists bolted together with M12 bolts at 600mm centres. Timber Trimmer Beam to have a minimum end bearing length of 100mm.