Boom and counter boom of the crane 2.13 Trolleys for the movement of the load m 1 and counterweight m2. The trolley shown in Fig. 13, consists of a chassis or metal base and four wheels which are to move into two rails. The rails that belong to the boom are longer than those of the counter boom.
Water easily passes though this EZ-Dry polyurethane foam. * Outdoor furniture such as seat and back cushions and mattresses. * Boat or marine cushions, golf carts, pool, patio or grading cushions. * Can also be used under Phifertex material and for filtering or padding whatever is exposed to large amounts of water.
There are two common types of polystyrene foam: extruded polystyrene (popularly known by its Dow trademark, StyrofoamÂ®) and expanded polystyrene (EPS). Most food service applications, including meat trays, egg cartons, hamburger clam shells, foam plates and trays, are extruded polystyrene. However, the common coffee cup is expanded polystyrene as is almost all industrial cushion packaging. This is the cellular white molded foam that is used to package televisions, stereos, computers, delicate electronic equipment and other fragile industrial and consumer products. Both expanded polystyrene (EPS) and extruded polystyrene are used extensively as thermal insulation in industrial, commercial and residential construction.