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.
Strongrr New 7 Pcs Ulitmate Professional Precision Screwdrivers Repair Tool Kit for Hobby RC World's LARGEST GYRO RC HELICOPTER GYRO METAL 3.5CH RTF RC Helicopter 47 INCHES!! Only 5 left in stock - order soon. Only 3 left in stock - order soon.
A helicopter...a real one that is....can weigh as little as 1300 to  1600 pounds for a 2 place piston, like a Robinson R22 ( guessing  the weight) to a BK 117 like I fly whiâ¦ch grosses out at 3200 Kgs to  the huge Russian machines that are up to over 100,000Kgs. The Mil  V-12 is the largest I believe.