A precast manufacturer/contractor needed a coordinated 3D model at LOD 450 supported by accurate Rebar shop drawings of concrete elements and Bar Bending Schedules (BBS) for a residential project in UAE. The business need included:
A clash-free and coordinated 3D BIM model with 5mm clash coordination for casting precast elements
Detailed BBS scheduling with exact length and quantity of BBS detailing, bending shape and angle with images, cutting shape in a three dimensional view
3D model with unique element IDs, precise quantity estimates, accurate material schedules, BBS, etc. with enhanced visualization for precise precast element manufacturing and onsite installation.
Challenges
The 2D drawings received as inputs were design development drawings which needed to be checked in a 3D model for any clashes or inconsistencies
Compliance with local regulations required continuous technical training
Constantly evolving design of each and every pre-cast element with respect to its nearby elements and overall structure
Scaling up/down resources to meet project needs
Our Solutions & Approach
Created clash free and coordinated 3D BIM model using Revit and BIM 360 for accurate precast element manufacturing and installation.
Develop a completely collaborated and clash-free 3D model at LOD 450 with 5mm clash coordination on BIM 360 platform with:
Rebar Shop Drawings of concrete elements
RFI standardization for reduced scheduling errors of structural elements
Accurate schedule estimation, BOQs, BOMs, and Bar Bending Schedules(BBS) for quick material procurement and production
Approach
The team at Hitech CADD Services stepped in at a project phase which served as a parallel between the planning and design phase
A team of 25 senior BIM modelers and detailers with over 4 years of experience in structural modeling and detailing assessed the input AutoCAD drawings and PDF files including site and floor plans, building elevations and sections, and information regarding predesigned concrete of structural elements
The Object-Based Modeling phase supported the team and the client to incorporate quick and early design changes for model optimization
Clash coordination performed at this timeline of the project supported by collaboration led to improved timelines, better execution, and overall cost optimization
Individual Precast elements and the collective project was quality checked for standardization
Detailed BBS with precise length and quantity, shape bends, angles with images, and 3D views were generated
Implementation of preemptive project workflows reinforced with coordination led to quick issue resolution, faster element filtering, and accurate material quantity estimation based on the unique element ID assigned and the sequencing provided by Hitech CADD Services
Column Beam Slab Junction
Column Beam Junction
Business Impact
3D models reinforced with clash coordination under 5mm for M60 concrete grade
Fast TAT of deliverables within 6-8 months with 100% accuracy leading to significant time and cost savings
Improved production quality with accurate BIM-based precast shop drawings
Unique ID for each structural element enabled client to gain faster and accurate erection with proper planning and sequence
Mould drawings and typical list of elements helped client to save costs on concrete casting elements
info@hitechcaddservices.com
