When installing the cable tray in Jinan, the length and angle of each section of the cable tray shall be accurately measured, and the standard parts and factory prefabricated parts of the cable tray factory shall be used to reduce the cutting of the cable tray on site and ensure the project quality. Now let's take a look at the summary of details during the installation of cable tray.
The cable tray laid in the shaft and crossing different fire zones shall be provided with fire isolation measures according to the design requirements. The cable tray laid in the electrical shaft can be fixed with angle steel.
The corbel is a rigid part that directly supports the tray and the ladder and is fixed separately. The corbel can be fixed with bolts, embedded bolts, expansion bolts or clamped.
When the cable tray is laid horizontally, the support span is 1.5-3m. When the cable tray is laid vertically, the spacing between fixed points should not be greater than 2m. When the bending radius of the bridge is not more than 300mm, a support and hanger shall be set at the side of the 300-600mm straight section at the junction of the span bending section and the straight section. For the installation of supports, hangers and bridges, it must be considered that the bending radius of cable laying meets the requirements of very small bending radius.
Installation of gate type angle steel support: the ladder type cable tray is vertically laid along the wall, and the gate type angle steel support can be used. The support shall be fixed in coordination with the civil construction as far as possible; Open angle bolts can also be embedded in civil construction, and the bracket can be fixed with open angle bolts; Expansion bolts can also be used for fixing.
Installation of ladder type angle steel support: when the cable tray is horizontally installed along the wall and column, the supporting wall shall be installed on the special-shaped steel column, and the column shall be installed on the ladder type angle steel support, so that the fixed support (or bracket) of the cable tray on the column and the wall is in the same straight line. When the underframe is welded with the portal frame, the weld fillet height is 5mm.
Side wall installation of cable tray column: column is a component that directly supports the corbel, including channel steel, angle steel and special-shaped steel column; The column can be installed on the wall, on the column, or suspended on the beam and slab. Method: embedded iron parts in concrete; Masonry can be built with prefabricated blocks; Expansion bolts can also be used, but must be used on brick masonry with concrete strength C20 or brick strength above MU10.
The cable tray shall be laid under the flammable and explosive gas pipe and heat pipe. When there is no design requirement, the clear distance between the cable tray and the pipe shall be very small, which shall comply with the general provisions. For more information on related matters, please come to our website http://www.yeeones.com Consult together!