Dears,

In guide spacing charts for metallic piping, we observe that horizontal guide spacing is higher than vertical ?
For eg, for NB 6", 45PSF wind, vertical guide span is one fourth of the horizontal guide span.

Will any of our mentors give the reason behind this? Is it for prevention of buckling in vertical run of piping ? For nonmetallic piping, buckling requirement is significant. Why will buckling occur in vertical run for metallic piping - due to eccentric weight loading during wind load ?

How will we evaluate buckling in verical run during wind - is any simple formula available?

regards,

sam