| 摘要 |
Foundation which consists in covering the walls of the cavity in the ground where the base of the post is to be buried with a flexible, polymeric material which insulates against moisture, and polyurethane foam, which is cured in the actual cavity with the post already in position, is arranged between the base of the post and the side walls of the cavity. Applicable to the construction of supports for electrical conduction posts. <IMAGE>
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