Isolated Masonry Piers 1. You may use hollow core concrete masonry units (concrete blocks) to build isolated masonry piers if the units are at least (â¥) 8 inches thick and not longer than (â¤) 3 times the unit thickness.
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The CH-47F Chinook, the fastest military helicopter in the world, has a maximum speed of 315km/h. The Mi-35M (NATO code name: Hind E) military transport helicopter can fly at a maximum speed of 310km/h. The EH101 Merlin (now called AW101) medium-lift helicopter is one of the fastest military rotorcraft in the world.