Wire　and　Arc　Additive　Manufacturing　(WAAM)　is　one　of　the　3D　printing　techniques　largely　employed　in　the　field　of　steel　construction,　with　the　ability　to　produce　large-scale　structural　members　with　high　speed　and　low　cost.　Cold　Metal　Transfer　(CMT)　is　a　more　suitable　welding　technique　for　additive　manufacturing　with　the　advantages　of　high　energy　density,　excellent　surface　forming,　no　splatter　and　fewer　welding-related　defect.　In　order　to　promote　the　use　of　the　CMT-WAAM　technique　in　the　construction　industry,　fundamental　research　on　the　me-chanical　properties　of　CMT-WAAM　materials　is　urgently　required.　To　this　end,　a　comprehensive　study　on　geometrical　and　mechanical　properties　of　316　L　stainless　steel　fabricated　by　CMT-WAAM　technique　has　been　carried　out　and　the　results　are　reported　herein.　3D　laser　scanning　was　employed　to　capture　the　geometries　of　CMT-WAAM　plates　and　a　suggested　geometrical　model　to　describe　the　undulating　surface　of　CMT-WAAM　components　was　presented　after　a　series　of　data　acquisition　and　processing.　A　total　of　162　tensile　coupons　were　tested,　covering　different　welding　process　parameters,　surface　types　and　extraction　directions.　As-built　and　machined　coupons　were　tested　to　investigate　the　influence　of　the　geometrical　properties　that　are　inherent　in　CMT-WAAM　process　on　mechanical　properties,　while　the　coupons　extracted　from　three　orientations　were　tested　to　explore　the　anisotropy　of　the　material.　Finally,　the　design　values　of　the　main　mechanical　parameters　for　CMT-WAAM　316　L　stainless　steel　were　calibrated　for　three　main　orientations　according　to　EN　1990-Eurocode　0　(EC0)　to　give　design　recommendations.