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).
Let me show you how to build storage shed walls the best way and the right way. You can use the surface of your shed floor to build either wall first. First, measure and cut your top and bottom plates. Now place them together and mark off locations for your wall studs and door stud location.