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.
EVA Foam is a soft, yet durable polymer of ethylene and vinyl acetate commonly used in flooring, but also in sports equipment, crafts, and set design.he material's softness means it lessens fatigue from long periods of standing. EVA foam also absorbs noise-an added bonus for a weight room or work room. Mats have good grip, so they won't slide across slick floors. EVA foam is easy to clean and is resistant to chemicals, making it ideal for sweaty gyms or play rooms.