SFA: What's the Answer?

Is Matarazzo a composite? It also depends on the thickness, 2cm or 3 cm. 40” overhang or 40” top? (o/h +24” cab + 14”h overhang +/-) Natural Stone Institute Design Manual, Ch. 17, speaks to the need for support in overhangs that exceeds 10” for 3cm and 6” for 2 cm. **I never felt comfortable with that and cut it down to 8” and 4" (without edge lamination) in 2cm. The countertop material is a veneer and is not considered structural, so don't count on the waterfall for much, if any, support. My guess is that you will need a counterbalance type of support (if 40” top) to support out to within 6” or 8” from the edge of the overhang, with spacing between 24”-36”, depending on material thickness. I'd keep supports on the end of the cabinet by any waterfall, and within 8” of an open end. David Scott Architectural Stone of Montana / Slabworks of Montana Bozeman, Mont. 406-522-9001 "What we leave behind is not what is engraved in stone monuments, what is woven into the lives of others" - Pericles

Also: Most quartz products allow spans between supports up to 36” for an unsupported overhang in a 2:1 ratio of support to overhang, up to 13“. I always kept it to 12”, just cuz I don't do anything in 13's ….