4 x 8 20 July 8, 2019 16 32 64 128 4 х 20 8 4 5 x 8 )= 20 14 - x 4 - 8 = 20 2x 4 x 8 20 56 4 х 8 20 4 2х 8 )-( х 20 4 8 x 200 4 x 20 8 12 4x 4 8 =- 20 4 x 8 x 20 pressure treated lumber 4 x 8 x 20 cedar beam 4 x 8 x 20 beam 4 x 3 8 20 4 x 8 )= 6x 20 2