| 摘要 |
A building board (31) for trench shuttering is disclosed, comprising an essentially rectangular frame (32) made from profile steel and cladding sheet (33) welded to both sides of the frame for protecting the walls of a trench (1) for a line. According to the invention, one and the same building board may be used unaltered for both stall shuttering and side rail shuttering, whereby the building board is provided with brace holders (38) for stall construction which are completely recessed in the board and which can be operated from a vertical board edge. Furthermore coupling rails (34) are provided on the vertical board edges for use in slide rail shuttering, whereby the coupling rails have holes (36) in those places adjacent to the brace holders.
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