How to avoid the hammer drilling of reinforced concrete? With what method can you avoid the position of steel bar best?
This requires that you have to understand the main body of your building, the general shear walls or beams, the main bars are on both sides of the section, away from the wall a few centimeters of protective layer
Generally in the concrete section drilling is used for planting steel bar, this I have experience. Because the rebar is densely distributed under the concrete layer, the location and direction of the steel bar can only be judged by experience. Don't use big beat when hammer started to enter the drill into the over reinforced concrete protective layer after no problem, if encountered at the beginning the first observation of reinforced steel bar, the location, and then change the drill bit into the direction of bias, and this is the time to Caution!, careful card and cyclotron wounding.
Column on to find the law is relatively easy to handle: the main steel column is vertical, spacing in 150~200; the main reinforced beam is horizontal, only in the lower, more than 500 of the beam, the middle part of the transverse reinforcement spacing, around 200; column stirrup is placed sideways, the stirrup is vertical beam the distance is about 100~150.
Don't know if you are in the beam or plate punch, because whether you this hole is what to do with, to the back to repair with cement mortar, so under normal circumstances, I am in the first hole Qianxian cut through the protective layer, and then find the bar, in the bar arrangement according to (this is the best to get the chart to see) to determine the rest of the position of the hole (of course, there may be errors but try to play better than blindly); the last patch.
