Longitudianal Seismic Loads on Pipe Anchors Bay.

Can any body shed some light :
Whether we can neglect longitudinal seismic loading force for pipe support sleeper or concrete piperack anchor bay design. It is observed that the lines & support for which Longitudinal Seismic Loads not considered for anchor bay design had experienced the earthquake & is still working fine.
Any comments.

Rgds,
Rajesh Received on Fri Jun 04 03:51:00 2004