experiance needed (1 Viewer)

brad

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does anyone know what the maximum projection of a unsurported tube is ?.
i know a lot of you will say any more than two boards will need surporting and i agree and think its good practice. i have tried to find something in black and white that actually says what it is.any ideas
 
thanks for the input guys but is 600mm from experiance or have you seen it in written requlations and if so where. i have read TG.20 front to back and dont seem to find any answers . where did you get 600mm from? once again many thanks
 
As far as I remember 600mm was maximum projection in the regulations papers supplied to us during our assessed route, same sort of thing as the tube for a gin wheel can't have an unsupported length of more than 750mm
 
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