IoT-Enabled On-site Assembly Service in Prefabricated Public Housing Construction Fan XUE, Zhengdao LI, and Geoffrey Qiping SHEN 7th Jan 2015 Funded by HKSAR ITC ITP/045/13LP Hong Kong Housing Authority The University of Hong Kong 香港房屋委员会 香 港 大 學 Content 1 Background & Opportunity 2 Proposed Solution & Progress 3 Future Works Hong Kong Housing Authority The University of Hong Kong 香港房屋委员会 香 港 大 學 2 1.1 Prefabricated Public Housing Estate Construction (TM A54 S2) • 3 main phases • Production • Logistics • On-site assembly • Pros • Low pollution • Low Cost* • Strong architecture • Agile teams • Win-win • Cons • v.s. labor cost • Higher level management Hong Kong Housing Authority The University of Hong Kong 香港房屋委员会 香 港 大 學 3 1.2 Work Study for Precast Concrete Elements Wing B Wing A Precast Elements Schedule - Precast Volumetric Bathroom (VPB) (28 nos.) - Precast Façade (46 nos.) - Semi-precast Slab (100 nos.) - Precast Staircase (6nos.) - Precast Partition Wall (9 nos.) - Precast Tie Beam (3 nos.) C.J. - Precast Refuse Chute(1 no.) (Proposed Precast Element) - Precast Water Cabinet (4 nos.) (Proposed Precast Element) - Precast Landing (6 nos.) (Proposed Precast Element) Total 203 nos. Preacst Elements per Typical Floor !!! Wing D Wing C Typical Floor of Block 3 (Total 5 nos. of Blocks) Prefabricated components on one typical floor (Source: Main contractor) Hong Kong Housing Authority The University of Hong Kong 香港房屋委员会 香 港 大 學 4 1.2 Work Study for Precast Concrete Elements Prefabricated components summary (Source: Main contractor) ElementsName Precast Water Tank Precast Façade Precast Parapet Semi-Precast Slab Precast Staircase (8 Steps) Precast Staircase (16 Steps) Precast Refuse Chute Precast Water Meter Cabinet Precast Stair Landing Partition Wall (Staircase) Partition Wall (Kitchen) Precast Tie Beam Precast Bathroom Block 1 Block 2 Block 3 Block 4 Block 5 Location Total Location Total Location Total Location Total Location Total G/F 1/F F2-F31 F32 F33-F34 Main Roof F2 F3-F31 F32 F33-F34 F1-F34 F1-F34 F1-F34 F1-F34 F1-F34 F1-F34 F2 F3-F31 F32 F33-F34 F2-F34 F2 F3-F31 F32 F33-F34 3 44 1560 46 82 52 89 2900 92 162 134 68 34 136 68 34 4 174 6 8 33 30 870 28 48 G/F F1-F33 3 1056 G/F F1-F35 F36-F37 3 1610 72 G/F F1-F2 F3-F36 F37-F38 3 74 1564 72 G/F F1-F34 F35-F37 3 1564 111 Main Roof F2-F35 F36-F37 46 3400 160 46 3300 249 146 74 37 148 74 37 272 12 F1-F37 F1-F37 F1-F37 F1-F37 F1-F37 F1-F37 F2-F34 F35-F37 146 74 37 148 74 37 264 18 F2-F37 F2-F35 F36-F37 36 952 44 46 83 83 3300 160 150 76 38 152 76 38 6 6 264 12 39 24 28 924 44 Main Roof F2-F34 F35-F37 F1-F37 F1-F37 F1-F37 F1-F37 F1-F37 F1-F37 F2-F35 F36-F37 Main Roof F2 F3 F4-F36 F37-F38 F1-F38 F1-F38 F1-F38 F1-F38 F1-F38 F1-F38 F2 F3 F4-F36 F37-F38 F2-F38 F2 F3 F4-F36 F37-F38 F2-F37 F2-F34 F35-F37 36 924 72 Main Roof F2-F33 F1-F33 F1-F33 F1-F33 F2-F33 F2-F33 F2-F33 Total = 6705 32 1984 130 33 66 128 22 576 Total = 4030 Note: Semi-precast slab and precast secondary beam of Commercial Centre Excluded. Hong Kong Housing Authority The University of Hong Kong 香港房屋委员会 香 港 大 學 Total = 7123 Total = 7262 Total (All Block) 15 7855 222 15962 706 292 146 584 292 146 1174 166 4564 Total = 7103 Totol 32124 Precast Elements 5 1.2 Work Study for Precast Concrete Elements The 6-day cycle over four wings (Source: Main contractor) Hong Kong Housing Authority The University of Hong Kong 香港房屋委员会 香 港 大 學 6 1. 3 Opportunity • Housing Authority (HA) • ~30% Hong Kongers living in its 730k flats • One of the leaders in using BIM in HK • One of the leaders in using RFID in 2008 (feasibility study); in 2014 (in new proj.) • Opportunity • Increase safety, effectiveness and efficiency • A way of increasing productivity • Similar problems in private projects Hong Kong Housing Authority The University of Hong Kong 香港房屋委员会 香 港 大 學 7 2.1 The Overall Project • 2 Univ. 4 Dept. 4 Professors • Many stakeholders • Add a layer to connect projectbased BIM/GIS and ERP/HOMES • Meets new requirements on automation • Our team: • (3) Hong Kong Housing Authority The University of Hong Kong 香港房屋委员会 香 港 大 學 8 2.2 The Technical Solutions (Hard+Soft) • RFID solution: • Plan A: Current solution (offline data) • Plan B: Cutting-edge solution (online data) • Converting nD-BIM: • Revit  WebGL 3D + time (in DB/UI) + cost (in DB/UI) • Volume & location data  DB • GIS: • Only available in Plan B • Direction/routing for components (like that in Google Maps) • Devices & GUI: • PC, Tablet, Smart phone, PDA* • Web pages, native apps Hong Kong Housing Authority The University of Hong Kong 香港房屋委员会 香 港 大 學 9 2.3 On-site Assembly Service (OAS): Our Part • Main users • Main contractor • Also: HA, other stakeholders • Hardware/service support • HKU • Data support (partial) • Main stakeholders • Main functions • Real-time supervision • Data-capturing • Real-time (events) feedback • On-site assets management Hong Kong Housing Authority The University of Hong Kong 香港房屋委员会 香 港 大 學 10 2.4 Progress • Done: • User requirements • System architecture • Module/Function design • In Progress • UI design • Function implementation • Next a few months • Function test • Release Alpha test version • Construction pilot practice for 1 month Hong Kong Housing Authority The University of Hong Kong 香港房屋委员会 香 港 大 學 11 2.4 Visualizing Project Progress on Your Mobile • On-site users: • PDA, Smart phone with RFID functions • Off-site users: • PC, Tablet, Smart phone Scan me to open sample page (best on Firefox, Safari, Opera) Hong Kong Housing Authority The University of Hong Kong 香港房屋委员会 香 港 大 學 12 3. Possible Future Works • Extending IoTs from construction to operation, maintenance & demolishing • Keep data & add more application systems • For a digital & smart city • Extending functions from a single project to the industrial symbiosis network • Add value • Reduce cost • Improve environment Clownfish feeding on small invertebrates (from Wikipedia) Hong Kong Housing Authority The University of Hong Kong 香港房屋委员会 香 港 大 學 13 THANK YOU Hong Kong Housing Authority 香港房屋委员会 The University of Hong Kong 香 港 大 學 Contact Us Professor George Q. Huang Telephone: 28592591 Email: bimplatform@gmail.com