GTAW:
I believe a CJP with backing bar would have been a good choice. Contractor actually offered as a possible solution and we concurred. However, the plan stopped when we asked about their level of confidence with "accurately" beveling the flanges. Some tough work positions and we have been...
Appreciate everyone comments and thoughts! This an elevated platform being constructed on a deck barge and is for private industry. The contractor was fully aware of the challenges during the bidding phase but more importantly during the planning phase. Conditions in a marine environment are...
Baseplates are existing and part of an existing barge so traditional grouting and anchor bolts not possible. Also traditional surveying no longer possible as the barge is free floating. Welding is the only option Photo link...
Total of (29) heavily loaded W12x65 columns land on (29) independent existing steel baseplates. It was understood that existing conditions were not perfect and the design documents stated that the contractor shall trim the bottom of individual columns so that the tops are aligned. The contractor...
When integrating pin holes for tension eyebars or standard clevis connections what is the accepted tolerance for the hole placed in the structural. Further what is the tolerance on the roundness for the holes? AISC D6.2 states pin holes shall not be more than 1/32” larger than the pin, however...
What is the basis of chapter 2.4.1 reduction of dead load to 0.6? Some theories are to provide SF against theoretical DL to actual as-built...also to insure overturning SF of 1.5 is met. However, would this combination be needed in a case where DL is well defined and overturning is taken by...
drrust: A points to the A36 backing plate and B points to the 316L in question. Concerns are not wirh durability but with surface distress. Under your "A" caption is a polished portion of the 316L that functions as a low friction slide with a teflon plate. The surface distress appears to be...
unclesyd: "lightly blast" would this be with abrasives or would water work? We are basically over water and containemnt/cleanup would be difficult.
strider6: atmosperic fresh water enviorment on the Great Lakes. No submersion and only possible chemical exposure would be to de-iceing products.
Would iron contamination result from A36 rust settling on the 316L plate. The underside of the bridge was not painted as specified or was full of failing paint.
What method would be required to clean the iron contamination? Thank you for your response
Slide assembly for a marine access bridge to a floating vessel constructed of the following: Upper section 3/32" teflon bonded to 1/8 316 SS plate then to 3/8 Neoprene Pad to A36 backing plate. Bottom Section 1/8" 316L plate with 2B finish seal weled to A36 backing plate.
Envirorment is a...