REBAR POSITIONERS

1. Rebar positioners have actually belonged to the masonry device bundle http://www.wcrfabricators.com/ for numerous years. They include no structural worth to the wall but aid the mason professional in centering the bars in the core of the block and likewise help to streamline the lapping process. The most affordable and popular positioners for vertical applications are Figure 8 or S type and the O ring. They are set up perpendicular to the plane of the block crossing the core with the wire loops focused. Positioners are embeded in the mortar of the bed joint for stability and vertical spacing has to do with every 4 feet. Placement tolerances for single rebar applications are noted in Specification for Masonry Structures. Working from the center point of the core you are enabled + 1/2 inch in the width or density of the wall and 2 inches along the length of the wall. This leaves you a space in the core center of 1 inch broad by 4 inches long to be code compliant for vertical applications. Some masons set up bars manually (by sight) and others with the aid of positioners but all with the threat of not satisfying code. While the usage of rebar positioners considerably narrows the margin of error, they likewise move during setup due to sitting on top of the shelf of the CMU and moving when a mortar or the next course is applied. A new pattern in rebar positioners has emerged to solve the motion issue throughout setup. Core placed positioners, which are designed to fit 1 1/2-inch deep, cross the core diagonally and fit securely in the corners of the core. The core positioners completely place the bars in the code compliance zone and enable no movement during setup. They likewise have an extended tail area (safety bend) so if set up improperly (out of aircraft), the tail will extend outside the wall signaling the mason to turn it in the opposite position. Core positioners are likewise offered but with a various design, spacing the guides or loops closer to the face shell of the CMU. To complete the household there is a bond beam positioner that places bars in the lower one-third of the system and 1/2-inch off the within face shell.