Clarifying'Mud'

摘要

I read with interest comments by deputy inspector Richard Fehring in WaterShapes' October, 2007 issue (Tisherman: Detail 81, "Keeping Watch," page 22). Although much of what Fehring says is perfectly valid, I would like to offer a clarification on one aspect of his discussion that I believe distorts what happens in the majority of situations. In the "Preferences" sidebar on page 26, Fehring builds the case that wet-mix shotcrete is superior to dry-mix shot-crete (gunite) based largely on potential flaws resulting from what I call "street mixing" of dry-mix material. What he fails to note is that street mixing is a practice limited mainly to southern California - and even in that market, fewer and fewer crews are working in this way.