Method for straightening joists

Claim 1

Method of staightening of a horizontally uneven floor joist made of lumber and comprised in a joist assembly, said joist assembly defining a first generally horizontal level and a second generally horizontal level, said levels being vertically spaced apart and being defined by top and bottom surfaces, respectively, of the joists comprised in said assembly, said method comprising the steps of: a. providing said uneven joist at said first generally horizontal level with a transversely extending, generally horizontal opening having a longitudinal axis generally coincident with a vertical plane perpendicular to the longitudinal axis of the uneven joist, the said vertical plane intersecting and extreme of unevenness of the joist; b. inserting into said opening an elongated connecting rod member, whereby the ends of the member protrude to both sides of said uneven joist, adjacent said first generally horizontal level; c. applying tension to the rod member by subjecting its each respective end to a force directed away of the respective side of said uneven joist and towards said second generally horizontal level; d. the application of said tension forces being effected by adjustable tension means anchored to joists of said assembly located to both sides of said uneven joist; e. the anchoring of said tension means being effected in an area adjacent to said second generally horizontal level.