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Joist strength
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dennis@home
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Joist strength
"The Medway Handyman" wrote in message
.uk...
The Natural Philosopher wrote:
The Medway Handyman wrote:
wrote:
The existing joists are 4" by 2" and are at present supported by
sleeper walls at 5 foot centres, the spacing between joists is 10"
with no noggins.
I built a deck for 2000kg hot tub last year. 6 x 2 joists at 12"
centres supported every 4'. Not a millimetre of movement!
Remember the depth cubed factor though - 6" is more than 3 times
stiffer than 4"
I didn't know that - where could I find out more?
Take an engineering degree.?
Bit OTT for a handyman with a thirst for knowledge?
Stick with the half the span (in feet) + one for the depth in inches rule
its much easier.
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