Hi all
i am building a raised bed in my garden out of concrete blocks (100mm wide x 215mm high). i am looking to build 2 blocks high and 1 block wide ( 100mm wide x 430mm high) i would like to know how deep and wide do i need to dig a trench to pour concrete in for the foundations. i was thinking may be 150mm deep and approx 250mm wide? complete guess.
help.
i am building a raised bed in my garden out of concrete blocks (100mm wide x 215mm high). i am looking to build 2 blocks high and 1 block wide ( 100mm wide x 430mm high) i would like to know how deep and wide do i need to dig a trench to pour concrete in for the foundations. i was thinking may be 150mm deep and approx 250mm wide? complete guess.
help.