Column spacing and span of the pipe gallery
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1 The column spacing of the pipe gallery and the span of the pipe rack are determined by the bending stress and deflection generated by the pipes laid on them； It is usually 6-9m. In small and medium-sized installations where there are many small-diameter pipes, a secondary beam can be installed between the two supports to reduce the span of the pipes. 2 The column spacing of the utility tunnel and the span of the pipe rack are determined by the allowable span of the smallest pipe laid on it or by the allowable span for most pipes. For pipes below DN40, use 3-4m. 3 The spacing between utility tunnel columns should be made consistent with the spacing between supports of equipment frameworks to facilitate the passage of pipes. In the case of concrete pipe racks, a φ20 round steel bar or steel plate should be embedded at the top of the crossbeam to reduce friction between the pipes and the crossbeam.
1. The column spacing in utility tunnels and the span of pipe supports are determined based on the bending stress and deflection generated when pipes are laid on them; generally, these values range from 6 to 9 meters. If there are many pipes of smaller diameter in small and medium-sized installations, a secondary beam can be installed between the two supports to reduce the span of the pipes. 2. The column spacing of the pipe gallery and the span of the pipe rack can be determined based on the allowable span of the smallest pipe laid thereon or the allowable spans of multiple pipes. For pipes with a diameter of DN40 or less, a span of 3-4 meters is generally used. 3. The spacing between the columns of the utility tunnel should be kept consistent with the spacing between the supports of the equipment framework, so that pipes can pass through. If it is a concrete pipe rack, it is recommended to embed a φ20 round steel bar or steel plate at the top of the crossbeam to reduce friction between the pipes and the crossbeam. .