I am a Civil Engineer and have an experience of more than five years in Cost Estimation & Quantities Takeoff of the Residential and Commercial Construction projects in USA, UK, Australia, and Dubai. I have worked on following CSI divisions : Division 02 — Existing Conditions Division 03 — Concrete (e.g., footings, slabs, precast, grouting) Division 04 — Masonry (e.g., concrete block, brick, stone) Division 05 — Metals (e.g., structural steel framing, joists, decorative metals, etc.) Division 06 — Wood, Plastics, and Composites Division 07 — Thermal and Moisture Protection (e.g., insulation, water barriers, sealant) Division 08 — Openings Division 09 — Finishes Division 10 — Specialties Division 11 — Equipment Division 12 — Furnishings Division 21 — Fire Suppression Division 22 — Plumbing Division 23 — Heating, Ventilating, and Air Conditioning (HVAC) Division 26 — Electrical Division 27 — Communications (e.g., data, voice, audio/visual systems) Division 31 — Earthwork