The construction of steel pipe sheet piles shall be provided with double-layer sample racks with a height of at least 3m. The construction drawings shall be drawn and submitted to the Engineering Department for approval before installation.
The steel pipe plate piles should be equipped with double-layer edders, height of at least 3m, drawing construction drawings to send the Secretary of Engineering consent before the installation.
The steel pipe sheet pile shall be equipped with a double-layer sample frame with a height of at least 3M. The construction drawing shall be prepared and submitted to the engineering department for approval before driving.<br>