See the premier of TMC’s Mission BIM Possible Movie and find out how our BIM specialists can save you time and money on your next project.
Before the advent of BIM (Building Information Modeling), mechanical contractors relied on tape measures, strings, and printed plans to lay out fittings, pipe hangers, and other elements on a job site. This time-consuming technique was complicated and prone to errors. Now, using a Trimble Robotic Total Station, 3D models with Trimble Points can be uploaded from the BIM office and downloaded at the worksite. Using control points, the Trimble can pinpoint its location within a job, and accurately lay out various MEP points to be marked within an 1/8-inch tolerance. A single Trimble operator can layout a job 5x’s times faster than a 2-person team using manual methods.[i]
First, the operator sets up the Trimble RTS (Robotic Total Station) by delicately placing the robot on top of a tripod, and then leveling the machine to ensure accuracy. The operator proceeds to calibrate the machine by focusing the RTS laser on various control points (reflective foils) around the job site. Usually, after three control points, the RTS machine will be able to locate its spatial relationship within the job site. From there, the RTS communicates with a Yuma II tablet which guides the operator and his prism pole laser over the exact Trimble points for fittings, hangers, etc. The Trimble Operator then uses a permanent marker to paint the laser indicated spot on the slab and note its specific identifying number.
When installers arrive, they create chalk lines for corresponding pipe runs, allowing them to locate various pipe systems, fittings, sleeves, hanger locations etc. By aiming a PLS laser from different Trimble points on the ground to the ceiling, installers see exactly where an installation point lies above.
The Trimble RTS is also capable of recording as built information to the BIM Team. This allows for updates to the collaborative 3D model, while reducing clashes and the time it takes to resolve issues. In a head to head test of Trimble verses Traditional Measuring, 200 Trimble Points were marked in four hours with perfect accuracy. Traditional measuring only marked 97 points in the same time frame with 2 RFI’s required.[ii]
TMC (Tebarco Mechanical Corporation) in Alpharetta, Georgia has been using Trimble since November of 2015. Project Manager, Trevor Barden has seen a huge improvement in the way that mechanical systems are being laid out and installed.
“With Revit, the BIM team can accurately create a virtual representation of a building’s systems prior to any physical installation of its components. By taking this approach, contractors create their own opportunities to utilize efficient layout and installations methods—in our case, Trimble and Pre-Fabrication. These best practices will condense the OPS and help deliver a far superior product to the owner.”
Trevor Barden, TMC Project Manager
Tony Adams, TMC’s Vice President of Pre-Construction, recalls a time when TMC used Trimble on a worksite and discovered that the string and tape measurements of the electrical contractor were totally off. Luckily for the General Contractor, this error was caught before any permanent structures were assembled, saving thousands of dollars in rework.
For more information on TMC’s BIM capabilities, go to www.tebarco.com or call (770) 475-5552
[i] Trimble MEP, Construction Layout with the Trimble Robotic Station, https://www.youtube.com/watch?v=e-BnQH5v7tA&list=PLeXB-DGlqL9An2fePqDLKxiqmUf9ILCob , accessed July 11, 2016
[ii] Trimble vs. Tape, http://mep.trimble.com/products/field-solutions/trimble-mep, accessed July 11, 2016
TMC welcome’s our newest addition, engineer Kyle Minton to the team. Kyle is a native of Warner Robbins, Georgia and a recent graduate of Mercer University in Macon. His interest in mechanical engineering was sparked as a teenager while helping his dad work on the family car. Kyle will undergo extensive training in TMC’s BIM (Building Information Modeling) department to meet the ever growing demand for mechanical designers. Last summer, he drew HVAC mechanical designs with AutoCad at Clark & Nixon for his internship, so he expects a smooth transition to the world of 3-D designs. When not at work, he enjoys fishing, being outdoors, the Braves, and the Falcons. Kyle, Atlanta, and TMC appear to be the perfect fit.
Building Information Modeling Systems (BIM) is a modeling design plan that uses 3-D Smart Technology to create electronic drawings of a building’s geometry, spatial relationships, and components. It’s benefits to the building industry have been immeasurable over the last decade. It improves costs, productivity, scheduling, quality, and safety. Now, the Tebarco Mechanical BIM team has taken these capabilities one step further by using it to pre-fabricate materials at our warehouse.
BIM’s precision allows for exact measurement of materials and frees up space and time on busy construction sites. Instead of carrying materials from the warehouse to different construction sites, all supplies are at the technician’s finger tips, avoiding wasted time waiting for missing parts, clashes with other trades, or a lack of work space. Above is a BIM of diagram of a toilet battery being installed at the new Atlanta Testing Laboratories.
A 2010 survey by the Construction Management Association of America found that between 40%-50% of all construction projects were running behind schedule. The number one reason for delays was due to rework. Rework is usually caused by a lack of coordination between contractors and conflicts of systems. It is the cause of 5% of total construction costs and wastes in time and labor costs. The mechanical, electrical, and plumbing (MEP) industries are key players when it comes to a successful construction project. Because they are the most labor intensive trades and directly affect the efficiency of work flow, they must cooperate in order to avoid interference.
Cost and Time Savings
In the last decade, BIM (Building Information Modeling) was developed to increase productivity and avert conflicts. BIM is a modeling design plan that uses 3-D Smart Technology. It allows designers to create electronic drawings of a building’s geometry, spatial relationships, geographic information, and several properties of a building’s components. With BIM, each trade knows when and where it can work and what materials they’ll need without interference with another group. Daily on-site “clash meetings” are a thing of the past because each trade is integrated into the work schedule from day one of the design. In addition to providing a digital representation of a project during its lifecycle, it also provides benefits like wiring diagrams, parts list, exploded views, operations, and maintenance manuals. There are even applications that can check for code compliance. A University of Florida study found that BIM improves 1) quality 2) cost 3) schedule 4) productivity, and 5) safety.
Software like BIM 360 allows a coordinated model to be viewed in its entirety from an I-Pad on-site. It also provides comprehensive cloud based model storage and clash detection. This, along with Go-to-Meeting, lets multiple viewers see a layered portrait of each phase of construction in real time for on-line collaboration sessions.
The days of mountains of paper drawings and frequent trips to the jobsite trailer to view the latest drawings are over. All field supervisors carry smart tablets around the site that allow workers to see updated drawings and photos of completed work for reference. It’s the modeling plan that keeps on giving!
Cutting Edge of Lean Building Efficiency
Tebarco Mechanical invested in its first BIM seat in 2012, ahead of many mechanical companies in Atlanta. Today it has 4 full time BIM specialists. One of the things that makes their team so exceptional is the checks and balances system that exists between the BIM department, the Project
Managers, and Superintendents. All parties attend virtual coordination meetings where they can see real time information and electronic drawings through Bluebeam. Tebarco’s BIM CAVE (Computer Aided Virtual Environment) is second to none with each seat being outfitted with top of the line software and hardware. Sixty inch T.V. monitors are used for collaboration meetings and large scale virtual displays. Tebarco’s experienced BIM team has not only created mechanical plans but also coordinated entire projects.
BIM Software Technologies:
• Trimble Layout – Robotic Layout station that lays out the position of the pipes and equipment with information derived and provided by the BIM model.
• BIM 360 Glue – Software allowing the coordinated model to be viewed in its entirety from an Ipad onsite, and fully comprehensive cloud based model storage and clash detection.
• Boxx Server – Allows us to co-locate and have a BIM seat onsite.
• Got to Meeting – Screen sharing software allowing multiple viewers to view the latest model in real time from any location or device.
• SysQue– Revit Plugin that assists in modeling more accurately and quickly. Comprehensive family libraries, Bill of materials, and spool capabilities.
• A360 Collaboration – Autodesk cloud model storage and more efficient collaboration due to all aspects of the model are stored in one location.
BIM models are now being used to create pre-fabricated materials off site to create even more efficiencies. For more information, contact us at www.tebarco.com