Page 490 - Corrosion Engineering Principles and Practice
P. 490
456 C h a p t e r 1 1 M a t e r i a l s S e l e c t i o n , Te s t i n g , a n d D e s i g n C o n s i d e r a t i o n s 457
FIGURE 11.18 Steel flag posts with steel base sitting on concrete with close-
ups of pack rust area and missing post due to corrosion of the base.
other steel-based fixtures should be supported so that they do not
contact concrete at all as in Fig. 11.19(b) [18] or in Fig. 11.20. If horizontal
tanks must sit on a concrete saddle, as in Fig. 11.21, a support plate
should be welded to the vessel to give an extra thickness allowance for
the expected corrosion. A metal saddle would be even better.
(a) (b)
FIGURE 11.19 (a) Support post with bottom plate fastened above floor level.
(b) Support tanks above floor level (adapted from [18]).
