/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: ahmedmohamed201 https://public.slidesharecdn.com/v2/images/profile-picture.png Designs, and the preparation and coordination of mechanical engineering drawings )for example, Ventilation, and air conditioning (HVAC) , refrigeration, plumbing, and water supply and Water purification and sewage systems and water drainage systems, Etc.), and determine the specifications, the use of various resources (different computer programs , and personal experiences and building codes, and the National Association of Fire Protection [NFPA], etc Work on the review of the technical design of projects in various stages of work and the necessary adjustments to coordinate systems Work on the material cost estimates for mechanical work Progress the adoption of the material ac...