Given: A stack of 144 "4x4" pieces of lumber, each 8 feet long, is required for fence posts (a "gross" is 144 pieces). Take the weight density of the wood to be 32.5 lb/ft3.
Req'd: Determine the total weight of the stack.
Hint: lumber is generally "dressed" (milled down) one half-inch under
its nominal dimensions. "4x4" lumber has net dimensions of 3.5x3.5 inches.
