Submerged arc welding halves of sphere together	Submerged arc welding halves of sphere together	Spheres with weld completed
Completed weld on sphere	Utrasonic examination of weld on sphere	Hemisphere with reinforcing plate welded in place and machined weld bevel completed
Submerged arc welding reinforcing plate into hemisphere	Bending 48" diameter arch section	Bending 48" diameter arch section
View inside pipe being bent, showing heated zone where bending is taking place.	View of bending operation showing coil and heated zone	View of bending bay
Bent arch section	Bent section with hanger plate	View of bending bay from crane cab
Test bend piece with sections removed for mechanical testing. In background on pallet are pieces of spheres which are removed for 24" pipe to extend through spheres on upper corners of TR-6 & TR-13. These segments have been machined in preparation for welding them back into pipe on the wall side of the spheres.

Dallas Convention Center
Progress
General