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).
Steps. 1  1. Level the ground (if necessary) and install deck piers along a grid to support the shed. The piers will allow you to string support beams beneath the floor of the shed. 2  2. String support beams lengthwise across the deck piers. This will support your floor joists, which run in the opposite direction.