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Steel-Tech
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Intellicenter Riverside
Intellicenter Riverside is a 150,000 square foot three story office building located in Riverside California. It is a “green” building and is LEED certified. The walls are concrete tilt-up construction. The firm used Tekla Structures to detail all of the steel on the project from anchor bolt templates to assemblies embedded in the concrete panels to structural steel to roof screen to miscellaneous steel including stairs and railing. 3205 assemblies were shipped to the jobsite totaling 758.5 tons. There were 552 general arrangement and multi-drawings created in 675 manhours. The firm used Tekla Structures to help sequence material for our fabrication shop and installation crews. The fabrication shop and installation crews were very happy with the ability to view the 3D model, the shop drawings and ease of installation.
Besides the mass quantity of steel in this building, there are many specialty items. Starting with the detail put into the massive anchor bolt templates in which the firm had to design a leveling system, the Engineer would not allow any threads in the shear plane so leveling nuts were not allowed.
Next they modeled all of the embedded items including rebar intertwined through the panels welded to our embed plates. The structural brace frames had a unique design unlike any standard Tekla connection. They created a
custom component that could be applied at each specific location. The sag rods with the added coupling nut profile gave the galvanized roof screen an impressive look in the model. Due to the raised floor of this “green” building the stairs had different connections that the team had never seen on any previous projects. Overall, all of the finite details put into the Tekla model paid off and made this a very successful job for the detailing department, fabrication shop and installation crews.
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Lehigh Valley Technical Associates
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Pennsylvania Turnpike Service Plaza
The Pennsylvania Turnpike Service Plaza is located in Allentown, PA. This is one of the many plazas along the turnpike being replaced in an effort to revitalize the rest stops along the PA Turnpike. This project is the largest of the plaza’s scheduled to be redone. The firm that performed services has since been contracted to perform structural steel detailing on another service plaza since Allentown’s successful completion.
The steel detailing for the aforementioned project was performed over a span of just four short months by 3 detailing personnel. Although the project has a total of only 220 tons there were many challenges. There was shipping restrictions as well as tight deadlines before the winter months set in. In addition there was a combined number of 16 wide flange and tube steel trusses that were all architecturally exposed which required special attention by the detailer and fabricator. Tekla Structures was used to generate all of the erection plans, shipping lists, bolt lists, .kiss files and of course material lists. Utilizing the tools provided by Tekla Structures allowed the team to significantly increase the size and volume of projects they are able to complete each year.
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Olson Steel
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West Dublin/Pleasonton BART Station
1,496,000 lbs of steel went into the fabrication and erection of this new rail station. Located between existing raillines, this project will consist of 2 station levels 320'-0 long, a 700'-0 long platform and 2 elevated pedestrian walkways
Built in the median of Interstate I-580 and bounded by active Bart rail lines, extensive coordination was required with CalTrans and BART authorities regarding access. Erection was routinely interrupted and limited to 4 hours of erection a day. Pedestrian bridges were fabricated in sections and assembled at the site for installation as 1 unit over Interstate I-580.
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3Detailing
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Fellowship Bible Church
This main phase of the project is 430 tons of structural steel encompassing an area of 86,600 SF. Construction was completed in Spring of 2008. The structural and miscellaneous steel was detailed completely within Tekla Structures 11.2.
The welcome center in the middle of the building is oval shaped (commonly termed "The Egg" during detailing) and the auditorium is an equilateral triangle consisting of pipe trusses. This building includes a 1,500 seat worship center.
The unique geometry of the building posed a wonderful challenge to the detailers and was a great opportunity to display the modeling powers of Tekla Structures.
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Thorton Tomasetti
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Cathedral of Hope Chapel
How does one create design and construction plans from only an architectural shape model with no columns or defined grid? The firm turned to Tekla Structures as the tool to perform the task.
Presented with only an architectural Rhino model of the building shape, the design and construction team was responsible to turn the vision into constructable reality. Working within the architectural confines, the structural design team used Tekla Structures to lay out the sloping, skewed columns and develop a framing system that remained within the architectural envelope. The sloping, curved, ribbon-like building walls
required exact positioning of the building columns such that no two columns were definable on a single plane.
The Tekla model was used from initial design layout to producing final design drawings and ultimately the fully connected model which was turned over to the steel fabricator. The design drawings produced from TEKLA consisted of axonometric plans, braced frame and roof elevations, and column schedules. Creating the design drawings in Tekla Structures created some interesting challenges like: How do you create a standard floor plan of a structure that has no definable elevations? How do you produce structural design drawings? The answers to these questions were to use axonometric views containing the framing sizes and section cuts. The actual 3-D connection details contained in the model were incorporated into the plan set; How is a standard column schedule created in TEKLA using the model data? This was accomplished by creating views of each column and utilizing the data within to create
the necessary scheduled information.
Although the project was small in nature, approx. 50 tons, it created several challenges that were accomplished through using Tekla Structures that quite simply are not possible with other commercially available software.
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Structural Consultants, Inc.
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Battle Mountain High School
The New Battle Mountain High School is a 2-story, stepped structure built on a sloped site with a gross area of approximately 193,000 SF. The structure is divided into 3 main areas connected by a radial pedestrian link: Gymnasium and Athletic facilities, Auditorium, Arts and Building Services and 2-story classroom building. The gymnasium roof structure is framed with steel trusses and long span open web joists. The gymnasium receives natural light from windows that were coordinated to be placed between the webs of the steel trusses. Horizontal steel bracing is exposed in the Classroom and Building Services areas of the school. The sloped radial connecting link features exposed steel columns, beams, light x-bracing and heavy timber wood deck.
Tekla Structures Version 13.0 was used to model the entire structure in collaboration with an architectural Revit model. The Tekla model was issued to the contractor at Design Development for steel pricing. It was used for collision detection by the General Contractor and it was released to the Steel Detailer when Construction Documents were issued. The Tekla model has been used extensively by the Structural Engineer during shop drawing review process and by the General Contractor during construction. The Battle Mountain High School was created by a consulting Structural Engineering firm that specializes in commercial construction projects such as schools and hospitals. The firm has been modeling with Tekla for less than 2 years. The Tekla model was build concurrently with the architectural design team using Revit. Model collaboration and coordination was accomplished via IFC model exchanges.
The structural model contains all of the major structural systems including the footings and foundations, pilasters, counterforts, load-bearing masonry walls, bar joists, brace frames, horizontal bracing, steel beams, columns, and the large-span steel trusses over the gymnasium. Also modeled were secondary structural and non-structural components such as slab-on-grade, composite slab, kicker braces, turnbuckle braces, mechanical floor openings and door and window openings in the foundation and masonry walls. The completeness and accuracy of the Battle Mountain High School model in combination with the rapid design schedule and rigorous design changes complicated by the radial geometry make this model very unique.
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V.A.D. Ltd. Structural Designers & Detailers
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Sault Area Hospital, New Acute Care Facility
This 5,000 ton structure is a hospital located in Sault Ste. Marie, Ontario, Canada. It is a three story plus penthouse steel framed building. This project was completed in a tight schedule with four licenses and with a successful erection. The clients were very pleased.
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BDS Steel Detailers
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Crystal Mall, City Center, Las Vegas
The Crystal Mall of the City Center Project is a Daniel Libeskind designed retail mall, located at the heart of the Las Vegas strip. This 11,000 ton structure consists of numerous curved and inclined trusses hidden within the crystalline metal clad shapes which form the distinctive roofs.
The collaboration between the architect's, engineer's, and entrant's Tekla model was critical to facilitate the successful detailing, fabrication and erection of this unique structure. During the modeling phase, the engineers worked alongside the detailer to develop connections by viewing the Tekla Structures Model. This enabled an understanding of the true member geometry and allowed for the ongoing design development. The Tekla Model was used in all aspects of the detailing and construction phases to ensure a successful project outcome.
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JPW Structural Contracting, Inc.
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Niagara Falls International Airport
The Niagara Falls International Airport is a 700 ton building with a lot of special features. The detailing of this model began in December of 2007, and was modeled using Tekla Structures 13. There has been a compilation of over 100 RFIs for this project just on the structural part alone. This building is very diversified from a standard structural steel building. The landside of this building consisted of a radiused roof that pitches both ways, 90’ radiused plate girders, 75’ King trusses and tubular glazing trusses with stainless steel rod bracing.The airside of this building is made up of more radiused beams, 180’ triangular and radiused space trusses that have a 120’ span that is unsupported. These trusses are fabricated and trucked to the site in (3) pieces that range from 55’ to 70’ long. Both the landside and the airside had significant amount of bolted moment connections.
The entrant has also done all the miscellaneous detailing for the job. There are four large stairs with railings and independent handrails at second floor levels. This project all in all was challenge from the start. From the team at the entering firm and the ability of Tekla Structures they were able to release this job into fabrication. To date this job has little to no issues going together.
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The Detailing Group
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Toy Story Mania
Full structural package. 394 tons. One of the first things to be said is the fantastic communication between the Engineer and the Detailer. When this project started there was one middle man between Disney Imagineering and the Detailing Group who ensured free range in communication between both parties. There was a total of only 3 RFIs written.
The project first started with modeling the tunnels at both sides that go under the coaster, then the rear rectangular building, and lastly the show building. The first meeting uncovered that the Engineering and Architectural modeling had been done in Revit which resulted in the push for doing model transfers due to the tight schedule. CIS2 converters, IFC models and the exporting of multiple versions were used. There is an extensive cat walk system in the rear building that hangs entirely from the roof.
The one thing about this project that cannot be shown is the amazing dedication from all parties to provide accurate and timely information. Communication was smooth which is amazing considering a project of this size, complexity and design.
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M-3 Engineering
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Space Surveillance Telescope Enclosure
The SST consists of a steel framed fixed base structure built around an independently supported cast-in-place concrete telescope support pier. Supported by the fixed base is the rotating dome which is a steel framed structure with operable steel shutter doors. The dome and fixed structure are designed to sustain not only their gravity loads, but also severe snow and wind loads that are common at this remote, high elevation site.
This telescope structure is unique in that the dome rotation speed is up to 10 times faster than an average telescope dome. The structure is designed and modeled to withstand dome rotation acceleration forces of up to 2 degrees per second/second (over 1" per second rotation acceleration at the outer siding), and dome rotation speeds of 17 degrees per second (almost 9" per second rotation at the outer siding). High fabrication and erection tolerances are required in order to maintain the circularity of the dome ring box beam which carries the dome structure load on steel bridge bogie wheels, and transfers the drive wheel rotation forces, which are then supported by the fixed steel structure. The dome shutter doors ride on steel bogie wheels which are supported by steel box beams at the upper and lower ends of the doors. high fabrication and erection tolerances are required in order to allow the doors to open to an 18'-0 wide aperture and close to a tightly aligned weather seal to keep all moisture out of the enclosure.
Tekla Structures modeling software was integral in the successful detailing, fabrication, and construction of this SST Enclosure, enabling the use of extremely high tolerances required for structural and mechanical functionality. This 3D model illustrates the advantage of including all the relevant non-structural materials and mechanical equipment in order to achieve fully integrated BIM.
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