How do I Use a Screw Wall Jack?
A screw wall jack is used for lifting structural elements of a building, such as a beam or joist. You can use it to reinforce a building that has sagging due to a structural deficiency. It should optimally be used as a temporary measure for purposes of reinforcement. You can also use it during a re-leveling process in a house when you need to lift structural elements to replace a damaged beam or joist.
Instructions
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1
Ensure you have a suitable ground surface on which to put the jack. The surface should be level. If the surface is bare earth, such as in a crawl space, place a pre-cast concrete footer below the structural element you seek to support.
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2
Place the screw jack on the footer or ground below the sagging structural element.
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3
Lower the jack screw adjustment to its lowest height.
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4
Extend the telescoping jack as high as possible. Lock in place with the locking pin.
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5
Screw the screw adjuster until the top of the jack reaches the beam or joist that it's trying to support. Use an adjustable wrench for this.
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6
Tighten the jack until the desired level of the beam or joist has been achieved.
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Tips & Warnings
Consult a structural engineer before performing any structural work.
