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Foundation construction of solar water heating system: the foundation includes the concrete foundation under the steel support of the collector and the steel support concrete foundation of the heat storage tank. They were first encountered in the construction of solar hot water project, and are the most basic and important basis for layout in the future construction.

(1) For the construction of the steel support foundation of the collector, before the precast foundation is in place or the cast-in-place concrete foundation, setting the elevation and positioning the axis is the most important link in the construction. It is necessary to strictly comply with the positioning axis size requirements in the project plan and strictly control them for accuracy. During the cast-in-place concrete, the column base support plate or anchor bolt shall be installed at the position specified by the positioning axis with a fixed frame, and the anchor bolt shall be covered or protected with felt to prevent damage. One of the following methods can be used for foundation construction: after pouring the column base foundation support surface to the elevation position at one time, no cement mortar shall be poured. Pour the column base concrete to a position 40-60mm lower than the design elevation, and then level it with fine aggregate concrete to the design elevation.

Solar water heating system

Measures shall be taken for leveling to ensure that the fine stone surface course is closely combined with the foundation concrete. When prefabricating concrete, the same method shall be used: the column base support plate shall be placed at the design elevation in advance, and fine aggregate concrete shall be poured under the steel plate to the elevation. Pour the concrete under the column base bearing plate to a position 40-60mm lower than the design elevation, and then level it with fine aggregate concrete to the elevation. After the foundation construction is completed, its elevation and positioning dimension must be strictly inspected。

(2) Construction of concrete foundation under steel structure support of hot water storage tank the construction method of concrete foundation under steel support of hot water storage tank is the same as that of collector support foundation. Strictly apply for inspection after construction.

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