According to the "Standard Spacing for the Installation of Circular Rectangular Cast Iron Drain Pipes", the installation spacing of circular rectangular cast iron drain pipes should be set in accordance with the following standards:
1.Lateral spacing: Determine the transverse spacing according to the width of the bridge deck and the diameter of the drainage pipe. In general, for bridge decks with a width of less than 4 meters, the lateral spacing of the drain pipes should not be greater than 3 meters; For bridge decks with a width greater than 4 meters, the lateral spacing of the drain pipes should not be greater than 4 meters.
2.Longitudinal spacing: Determine the longitudinal spacing according to the function of the drain pipe and the size of the discharge volume. In general, for light traffic surfaces such as sidewalks and bicycle lanes, the longitudinal spacing of the drain pipes should not be greater than 6 meters; For heavy traffic surfaces, the longitudinal spacing of the drain pipes should not be greater than 4 meters.
In addition, in order to ensure the installation quality and safety of the drain pipe, the following points need to be noted:
1.Before installation, the drain pipe should be inspected to ensure that it has no cracks, sand holes and other defects, and that the specifications and models meet the design requirements.
2.When installing, the position should be determined according to the design drawings, and the precise positioning should be carried out by means of measurement, positioning, and line drawing.
3.During the installation process, the discharge pipe should be kept flat and vertical to avoid distortion and warping. At the same time, the firmness and stability of the support frame should be ensured.
4.After installation, the drain pipe should be inspected to ensure that it is firmly installed, the position is accurate, and the drainage is smooth, and the relevant acceptance records should be made.
To sum up, it is one of the important measures to ensure the normal operation of the bridge drainage system to install the drainage pipe in accordance with the provisions of the "Standard Spacing for the Installation of Circular Rectangular Cast Iron Drainage Pipe", and pay attention to the installation quality and safety issues.