tar to prevent wood from rotting.

this is for the part buried under surface.

所有跟帖： 

• 奧，是埋在地下的部分。想得周到~ -Sunblue- ♀ (63 bytes) () 01/08/2023 postreply 11:55:47

• treated wood still rots, just slowlier... -borisg- ♂ (76 bytes) () 01/08/2023 postreply 11:58:52

• 2尺夠深。要是我的話，都不放水泥，直接底部填碎石子，頂部填土。將來不要了，也容易還原恢複 -Sunblue- ♀ (0 bytes) () 01/08/2023 postreply 12:04:52