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).
How to Get a Building Permit for a Shed. Getting a storage shed for your backyard can be exciting. Itâs like buying a small house, only most people do not live in a shed. Even though a shed may only take up 300 to 700 cubic feet of space, many areas require a building permit prior to the installation. Not all areas require a building permit, however you need to read this article in case your area requires a building permit for sheds.