Standard 90 Degree Hook Rebar

Show details of the standard 90 and 180 hooks.

Standard 90 degree hook rebar.

A stirrup hook is further qualified in 318 11 section 12 13 2 1 as establishing the required anchorage when said hook encloses a longitudinal bar. Allowable stress design building codes confinement rein forcement development embedment joint reinforcement reinforcing bars. 6d d d d d d d d h h detailin g dimension detailin g dimension a or g hoo k a or g hook a or g 6d for 3 4 5 12d for 6 7 8 6d 3 min. Aci standard hooks for stirrups.

Rebar is designed to help provide expansion and contraction support for concrete. Specimens 90 and 180 degree standard reinforcing hooks were placed at varying angles to compare the angle of tilt and to compare the two hook types. 16 bar and smaller 90 degree bend plus 6db extension at free end of bar. 3 14 12 4d 12 6 keywords.

Details of the standard 90 and 180 hooks specified in sections 7 1 and 7 2 of the aci code. Stirrup and tie hooks have a sub definition for 135 degree bends. These bending details are shown if too sharp a bend is put into the bars they may in figure 7 12 there are many different types of crack or be weakened. When reinforcing bars are bent caution must for the different bar sizes and for the various be exercised to ensure the bends are not too sharp.

Therefore certain bends depending on where the rods are to be minimum bend. Bent at 90 angle. Twelve single bar specimens and twelve multiple bar specimens each containing either no. This rebar is grade 40 and has minimum yield strength of 40 000 psi.

Standard hook 180degree ad free. Astm standard reinforcing bars bar size designation nominal dimensions. The design is based on the reinforcement attaining the yield stress so the reinforcement must be properly bonded to the concrete for a finite length in order not to slip. 7 covers these requirements based on the 2003 and 2006 editions of the ibc.

This rebar is bent at a 1 ft. Construct each framing system has been designed based upon four typical live loads 1 9 kpa 2 4 kpa 2 9 kpa 4 8 kpa and a superimposed dead load of 1 0 kpa. The 90 degree hooks with 12 bar diameter extensions are what we usually see drawn in typical details. Tek 12 6 splices development and standard hooks for concrete masonry ref.

90 degree bend plus 12db extension at free end of bar.