Due to the different zinc content in brass, the mechanical properties are also different, and the mechanical properties of brass vary with the zinc content. For alpha brass, as the zinc content increases, both σb and δ continue to increase.
The practical method of connecting and turning the brass handrail bracket is: take the H value for the height of the armrest at the corner of the rest platform, and then make the rest of the armrest members by setting out. But the disadvantage of this method is that the height of the handrail measured at the center of each step is not equal, and the handrail is not parallel to the stair step. In this case, the only way to improve the parallax is to gradually adjust the length of each armrest pole.