Our job requires the installation of cast-in-place concrete columns (both 18" and 24" square) to be placed under existing floor beams in a building on several levels at several defined locations. the columns, after being poured, will require to be jacked to a specified 'pre-load' force. we...
We are planning to install an HDPE fire protection pipeline and there are several tie-ins to existing old cast iron pipe. I've been assured this is cast iron, not ductile iron. The engineer's information indicates the existing pipe conforms to the standard ANSI A21.6, which appears to be an...
