cheap way, concrete blocks, 2 dollars a piece...

90ft x 3ft high need 810 pieces, about 20000 pounds or 10 tons... bricks cost $2000.

dirt work probably $3000. labor about 12 labor days times your local labor rate.

所有跟帖： 

• 3米高的砖墙倒了会砸死人的，一定要permit，那么一定需要有执照的公司做。不能啥都雪地里埋死人... -守月- ♀ (0 bytes) () 08/05/2021 postreply 17:58:03

• Retaining wall 得地上几尺地下几尺吧。要打地基的，用钢筋水泥砖。 -alpha123- ♀ (0 bytes) () 08/05/2021 postreply 18:09:36