Professional engineering and CAD drafting (mechanical and civil) Mechanical and plumbing demolition Field measurements and technical layout O.S.H.A. compliant trench excavation and backfill for underground piping Precision pipe grading and sloping (underground and above ground) HVAC, Refrigeration, and Process equipment installation Plumbing fixture and equipment installation Mechanical hoisting and rigging for equipment installation System commissioning and startup Service and maintenance Piping installation tasks to include pipe hanging, fitting, coupling, joining, threading, grooving, soldering, brazing and welding associated with all of the following piping systems: Domestic water mains and fire protection service piping Sanitary and storm sewers (including manholes and structures) Interior domestic water piping, sanitary waste and vent piping Interior rainwater and roof drainage piping Natural gas and liquid petroleum mains and distribution piping Interior fuel gas piping Process piping for compressed air, nitrogen, inert gases, hydrogen, gasoline, diesel fuel, lubrication oil, steam process water and waste F.D.A. food service sanitary piping Refrigeration piping for air conditioning and refrigeration systems Hydronic heating and cooling piping Steam heating piping A.S.M.E. certified medical gas piping for compressed air, vacuum, nitrogen, oxygen and nitrous oxide