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Thanks @HTURKAK again The only thing that is making me kind of use UL instead of EN is diameter. EN allows for maximum of 3m. unless new versions came up with broader intervals.

Thanks @HTURKAK , i am curious about the construction of the type 1 tank, what does a "direct contact" actually mean, Usually we fabricate the tank per EN 12285-1 and we enclose 300 degrees of primary tank shell with a secondary tank shell. The way we do that is by installing the external shell...

Dear All, UL 58 mentions the below, "3.1 For the purpose of this standard, the following definitions apply. 3.2 TYPE I TANK – A primary tank wrapped by an exterior steel shell that is in direct contact with the primary tank; where, the exterior shell is wrapped from 300 to 360 degrees of the...

Hello All, Hope everyone is in good health, We have an underground steel tank, single layer, that started leaking, I was curious if there is any method to determine the leak location and pin-point it. Are there any sensors? any intuitive method to be used? Thanks,

I can do that, Pinned connection sound like a good idea, I think i can achieve a pinned connection by using two anchor bolts in the direction of the stair. Below is a new sketch. Any comments? Detailing is a hobby,

I am going to connect all the treads together at the free end. The concrete contractor said that the wall is well constructed, and he said it can take the bending moment. By issue is still how to fix the treads. Option 1 Option 2 Or option 2 with anchoring adhesive inside the drilled hole...

Yes, sorry all for the confusion, its a solid block of 400x150x200mm. What if i did option 2 but i filled the hole after drilling with anchoring adhesive prior to fastening each step? Detailing is a hobby,

I draw a sketch by hand. More than bolt in a masonry cell i inevitable in option one because the beam is too small compared to the masonry size, its 400x150x200mm solid masonry. The stair tread is composed of light hollow section trusses. Anyways here is the sketch. Detailing is a hobby,

Hello all, As the subject says, i am in one of those situations. There is an existing solid masonry wall that need to support a one floor cantilevered staircase structure. For the fixing of the cantilevered treads structure to the wall i am thinking of two options. Option 1) using chemical...

Thank you, everyone, for your responses and suggestions. I appreciate your input and the collective knowledge we have here. Let me address each of your comments individually. phamENG: I like your idea of building a temporary form to bend the tube around. Induction heating could be a viable...

Hello all, I hope everyone is doing well. I am currently working on an exciting project that involves curving a straight 355mm outer diameter steel pipe with a thickness of 16mm. The objective is to transform it into a curved pipe that will eventually take the form of a spiral, serving as the...

Dear, Thank you all for your POVS. I might go with a solution of manganese phosphate. Although i would like to find a cheaper option. And please note that i only meant by "mill scale" is that the tanks arent sandblasted from the inside. And may i point out that i only want to apply this coat...

Thanks, The client require the surface of the tank to be coated with something. it is specified. Detailing is a hobby,

Dear, We are in the process of fabrication diesel storage tanks. Shape is cylindrical, horizontal and above ground. We need to ship these tanks for a period of 1 month to the client. The client is asking us to apply some product on the interior unpainted surface of the tanks to prevent rust...

Dear it is a client requirement. He needs the manhole to be an ellipse of some kind, 400x500mm. So the flange and manhole cover needs to be elliptical. Does appendix 2 apply? Detailing is a hobby,

Dear, I hope everyone is well, i am working on the design of elliptical flange for a manhole. Does the rules of Asme div 1, appendix 2 apply? Or should we use another code? Does EN 13445-3 rules apply? Detailing is a hobby,

Dear all, good day. We recently god a job to repair a crane telescopic boom. We are looking this above crane specifications but we couldn't find the crane boom steel grade. Can anyone help or direct me to the proper route to follow in order to find this material grade or if anyone know it...

I don't think anyone can help you with that on this forum. Get a local consultant. Detailing is a hobby,

Dear members, Hope everyone been good, Happy new year as well, I was researching for a way to seal the tank chime between the concrete ring and the underside of the tank bottom. Now I have found few ways and few suggestions and suppliers like Belzona and Denso. But i am more interested to know...

Also attached is a picture of the specification for any remarks. Detailing is a hobby,