![]() Then your solution is to buy a $5000 computer program to do a $3000 job. Your boss doesn’t know, so he assigns the job to you, and then offers you absolutely no guidance. Given a total lack of experience on this type of job, are they looking to you to be their insurer of last resort and when something goes wrong you’ll be hung out to dry, all for a few thousand dollars of fees, on a project where your own company seems totally lacking in experience also. ![]() I would question the client, their experience and capabilities, and their motives when they need to hire out the lift planing for this kind of job. RE: anyone done lift plans? delagina (Structural) Draw your lift out at key stages to ensure you have anticipated all the steps in your calculations and so that the contractor lifts as you intended or can raise issues if they see a problem with it during their review. Means and methods and all that good stuff. Establishing the scope early and paying careful attention to the verbage used on the drawings will be key to ensure you're not taking liability that should be borne by the contractor. ![]() If you draw this up in Autocad (or similar) you can get the CG location from a LISP routine or a MASSPROP command. Offhand I suspect it will but depending on your valve weight and wall thickness some lifting arrangements might deform the pipe. You will want to verify that the pipe has sufficient strength for this. Cranes are expensive, excavators are not. If possible, design this to be lifted with an excavator that the contractor has on hand. It appears the pipe is 45°s from the ground up to the valve so if you pick adjacent to the valve you should have a CG below the pick points and this will keep it from spinning if you go with a basket and choker hitch. This does look on the simple side so definitely a good place to start, especially with your note to bring someone else on for this project to get the details ironed out. Professional and Structural Engineer (ME, NH, MA)Īndriver & SRE have the key points outlined. Perhaps you can hire an outside consultant to do the design for you where you review and approve it? If you can get that experience then it's definitely not the most complicated structural engineering task out there and quite rewarding. When you add this all up, combine it with a low redundancy situation, and add to that the consequences of failure and the likelihood of litigation should it go south, then you can see why I wouldn't attempt this in your shoes.Īll that said, this is definitely just a situation of getting experience with it assuming you're a competent structural engineer. I'm sure I'm leaving out a few other things as well. Finally, as you noted, getting all this information onto a document that communicates you intent is another experience area. Figuring out loads and forces is fairly typical but the trick is knowing all the design checks, impact factors, accidental loadings, and required OSHA (or other jurisdiction's) safety factors that are required. ![]() In addition, being able to plan each stage of the lift takes experience. To expand on my comment some of the biggest issues are understanding how stable (or unstable) something can be when lifted.
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