As of late, many Engineers of Record (EOR) have been providing only UNFACTORED LOADS for the producers of Multi-rotational Bridge Bearings and are requiring the Manufacturer to Factor the loads for their design of these bearings. This seems contrary to AASHTO LRFD Specifications and other AASHTO...
We use 6061-T651 aluminum plates (1" to 1 1/2" thick) plates for simple jigs and fixtures. We are looking for a lower cost alternative - if there is one. The strength properties are not critical, but the material should be at least fair in machinability. Does anyone have any suggestions?
Is there any way to improve the compression set of molded neoprene parts? Any production methods that will improve compression set? The samples for compression set testing are taken from the molded parts. The neoprene itself passes compression set testing when the testing is done on molded...
I am new to the molding of AASHTO grade neoprene for use in highway bridge bearings. The bearings consist of neoprene pads with alternating internal layers of steel shims vulcanized to the internal neoprene rubber layers.
Questions:
How important is the pressure inside the mold while...
