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Once both turnbuckles are attached, the rigging is then lifted over the top flange of the knuckle girder. The bright yellow lifting brackets have been specially designed and manufactured for this purpose.
The leg girder closest to the camera here, has the stub girders already installed. The stubs are used to precisely support the top girder, holding the two girders in exact alignment for the knuckle girder erection.
Sadly scrapped thanks to heavy structural deterioration of its Willowbrook body, PRA288, one of the iconic Blue Bus Daimler CD650s.
Piping Technology & Products, Inc. Designed and Fabricated Structural Pipe Hangers with Megalug® Pipe Attachments.
These are carbon steel structural supports designed for 6", 10" and 12" ductile iron pipe. They are hot dip galvanized to protect against corrosion and will be used in conjunction with hydraulic snubbers. The hydraulic snubbers are used to protect against axial shock loading, as well as providing vertical weight support.
Each support utilizes a Megalug pipe attachment to eliminate the need for field welding. The Megalug® attachments are designed to "bite" into the sides of the pipe providing an attachment point for the flanges on the fabricated clamp.
The 6" supports are designed for a maximum vertical load of 3,770 pounds, while the 10" and 12" supports are designed for a maximum vertical load of 11,630 pounds. All of the supports are built for an overall height of 55-1/8" from the upper support steel to pipe centerline.
Once the truck is parked in the correct position, the crane lowers the beam spreader with the beam clamps. The location on the girder where it is lifted has been carefully calculated and is measured in the field.
Motion of the TPC for pressure loading at 1 kHz. (Animated visualization link with displacements magnified by 5,000 times).
Slowly the crane operator lifts the rigging that supports the top flange of the girder while still supporting the bottom flange.
Dortechs glass and steel bolt assembly system can be suspended or stacked. It can be fixed back to structural steelwork, Glass fins, tension trusses & cable nets.
The product is ideal for Facades, Glass Bridges, Internal Partitions, Shopfronts, Balustrading, Glass Canopies & Roofs.
The final product has a Completely Flush external appearance, Clean lines with no intersecting mullions or transoms.
The system Maximises light transmission and has a range of mechanical fixings to suit aesthetic objectives.
Monolithic (Single Glazed) or IGU (double glazed)options are available.
For further information, please contact us using the details below:
Website: www.dortech.co.uk
Email: company@dortech.co.uk
Tel: 0044 (0) 1484 451177
Fax 0044 (0) 1484 456474
MSA’s ability to provide architectural design, structural design, MEP design, civil engineering, environmental analysis and surveying services entirely in-house allowed for a more coordinated and attentive solution, and streamlined project delivery that was in line with the client’s goals.
Rigging is attached to the bottom of the center lifting bracket, too. This allows the girder to be carefully controlled, while slowly changing it to vertical.
RAF MILDENHALL, England -- Firefighters from the 100th Civil Engineer Squadron Fire Department prepare an exercise scenario on the second floor of the structural trainer here Feb. 20, 2013. The firefighters train regularly on structural, aircraft and compartmental fires to ensure a quick and effective response in real-world situations. (U.S. Air Force photo/Airman 1st Class Dillon Johnston)
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All of the girders and knuckles are fabricated for a specific location on the bridge and when brought on site they are placed in their specific location because nobody wants to move them twice.
Now the girder can be held fully vertical, supported by the two remaining brackets and it is ready to be moved into the vertical storage location.
I'm noticing now that that isn't a true buckyball. There goes all the nanotech I've been developing based on its structure. #graygoo
Crew members prepare to set steel girders near the Western Reserve Fire Museum and Education Center on May 10, 2012.
For their ENGS 71: Structural Analysis course, students designed and constructed a treehouse at Hanover's Storrs Pond Recreation Area.
Photo by Douglas Fraser