There are two types of grid horse tracks, one is set in the grid, and the other is set under the bottom string of the grid. The first case is mostly, and it is generally necessary to choose the second one. For example, the grid is ready. , Temporary increase. The horse track in the grid is affected by the web rods of the grid, and the height is not very large. If a certain height is to be met, the thickness of the grid must be made larger!

       Use the lower chord of the grid as a horizontal support, and make a U-shaped aisle on it. Both static and live loads of the horse track are added to the bottom chord ball joints, using the method of line load (for example: 0.5KN/M* horse track length/how many ball joints in the horse track length!