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using strongboy props

Postby panza » Wed Jan 19, 2011 1:47 pm

I am knocking down a wall and whilst I usually use needles on props, in this instance due to services/ head restrictions, I am using strongboys on props.

I have never used strongboys before and when I crank up the props, the plate doesn't stay level and due to the eccentric load the prop visibly bows!! (props are approx 2.7m length so not fully extended but quite high).

Is this normal? Does not seem great to me. Not sure if I have over stressed them? I am concerned if they are not cranked tight then the cantilevered strongboy will deflect slightly.
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Simply Build It

Postby stoneyboy » Wed Jan 19, 2011 10:22 pm

Suspect you haven't put the strongboys deep enough into the wall - they need to go in far as the bracing flange.
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