Davit Design
Davit Design
(OP)
Hello.
Does anyone have any nice reference data to Davit designs?? Looking for possible calculations or standard component layouts and sizes etc....
Thanks,
Lee
Does anyone have any nice reference data to Davit designs?? Looking for possible calculations or standard component layouts and sizes etc....
Thanks,
Lee





RE: Davit Design
Brian
RE: Davit Design
http://w
or maybe navy type?:
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http://www.standardequipmentco.com/marine/63.htm
http://marine-doors-hatches.com/catalog-list.html
http://www.freemanmarine.com/ProductsHatches.htm
RE: Davit Design
Process Industry Practices (PIP) have standard drawings on manway davits and column davits.
RE: Davit Design
RE: Davit Design
I'm pretty o.k. with the physical mechanical design of the davit and its workings - however I'm fairly limited with information regarding there workings to the design codes (ASME VIII Div1 and PD5500) as well as the P.E.D. - as these are coded vessels for third party inspection, I'm worried we'll get pulled up on something when its too late to put it right!!
Regards,
Lee
RE: Davit Design
You should be able to use the design for the 12" on the 8" & 10". The material lists 5/8" eye-bolt and plate. With this size, you will still have nearly 0.25" on both edges of the flange for a fillet weld (8" - 150#). The davit will be a little over designed, but shouldn't present a problem. I have not worked with PD5500, Specification for Unfired fusion welded pressure vessels, so I cannot be sure how it addresses structural members. Under ASME VIII, D1, you should consider the davit a nonpressure attachment. Non Mandatory Appendix G, Suggested Good Practice Regarding Pipe Reactions and Design of Supports and Attachments may be useful.
The third party inspection will typically review the construction drawings and make sure that the attachments have been built as designed. They will visually inspect the attachments welds and may PT or MT them as well. Obviously, the design materials of the attachments will need to be compatible with the vessel and the welding will need to be covered by an approved welding procedure.
Best of luck,
John