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 Build a 10x12 Shed. Measure out the size of the shed on the ground. At each corner where the shed will be, dig a 36-inch hole using a post hole digger.Put a 9-foot-tall 4x4 in each hole, and fill the hole with cement up to ground level.ail them so that the 4-foot side is against the ground. On the 10-foot sides of the shed, you'll need two sheets of plywood, plus a 2-foot section of a third sheet of plywood. Nail the plywood to each of the 2x4s. Line the top perimeter of the walls with 2x4 boards by attaching them to the corner posts.