Membrane filters can be used for final filtration or prefiltration, whereas a depth filter is generally used in clarifying applications where quantitative retention is not required or as a prefilter to prolong the life of a downstream membrane. Membrane and depth filters offer certain advantages and limitations.
Concrete Hard-standing-When using concrete as a surface to support your new shed, you must ensure that it is level, flat and that it is dry in time for your shed delivery and installation. Here are the basic steps: 1  Using pegs and string, mark out the base area (allow 5 cm extra).
Anyway you can attach the walls of the shed to the concrete using 3/8 anchors. They come in different lengths. You will need a masonry bit, drill the required size hole and then pound the stud into the hole. Once tightened it spreads to hold the stud and therefore the wall in place.