adjustable jack造句

• These posts consist of lengths of heavy steel tubing that telescope inside each other with an adjustable jack on top.
• You should be able to correct the problem by installing a couple of adjustable jack posts in the basement under the sagging floor.
• A : Most concrete basement floors are only four inches thick, and this is really not thick enough to properly support an adjustable jack post.
• You should be able to correct both problems by installing two or more adjustable jack posts or lolly columns in the basement under that sagging floor.
• The pipes had to be specially supported on adjustable jacks during excavation work for the extension of the Jubilee line in 1995 because of settlement during the driving of an access tunnel out from Jubilee Gardens to the main running lines in York Road via Chicheley Street.
• Log houses which settle require slip joints over all window and door openings, adjustable jacks under vertical elements ( such as columns and staircases ) which must periodically be adjusted as the building settles, allowances in plumbing, wiring, and ducting runs, and fasteners for the walls themselves to prevent uplift.