Tank Anchorage

[Rony_2012]

Hi all

I am doing calculation for vertical steel welded storage Tank by using API 650, and need to be Anchorage the Tank. so, how I determined how many anchorage required for the tank? and how to check provided anchor brackets thickness is safe?
Anyone have sample calculation? any help will be appreciate.

Thank you

 

[JStephen]

See the design reference in API-650, Section 5.12.7, for design of the chairs.
Read through the API-650 anchor requirements closely, it's easy to overlook details.
The minimum number of bolts is circumference divided by 10', usually rounded up to a multiple of 4, with a minimum of 4 per 5.12.2.
If this spacing gives you unreasonably large bolts or excessively large chairs, or causes difficulties in embedment design, then increase the number of bolts.