●System components
① ND-30 A/B (structure attachment)
② ND-20 (pipe clamp)
③ ND-10 A/B (adapter)
④ NP-25A/32A Sch. #40 pipe
⑤ M12 seismic anchor bolt
1) Longitudinal sway bracing shall be provided on all feed
and cross mains regardless of size and it shall be excluded
for all branch lines and other piping.
2) Spacing shall not exceed a maximum interval of 24m and
the distance between the last brace and the end of the pipe
shall not exceed 12m.
● Slenderness ratio (L/r) : Less than 300mm (L: System length,
r : Min. rotation radius)
Min. embedment depth of anchor bolt : 50mm