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Hi everyone, I would like to know if there is some analytical relation/ formula which I can use to define face pressure of microtunneling in rock soil. I know that the total force is characterized by the sum of a component related to total lateral friction and an other one connected to face...

Thank you very much robyengIT you are right, i'm a italian boy i'm going to visit your page

Yes, it's a concrete pipe

Maybe I expressed myself in the wrong way. I want to know if there is a Standard, or recognized and authoritative method, I can use to calculate the force applied to the pipe during the jacking operation (i.e : face resistance and lateral frictional resistance) Thank you all in advance

Hello, i'd like to know which normative or standard i may use to calculate the maximum force applied to the pipe during the jacking operation. Thanks in advance

Thank you all. I decided to not calculate reinforcement for the conical eccentric reducer because this case isn't covered by ASME. Thank you again

Hi pennpiper, thanks for your intersting. I try to explain better my problem: i've got to design a scraper trap with a design pressure of 18.75 bar at ambient temperature. The material reducer is ASTM A 234 WPS with a costant thickness of 9.53 mm, while the connected pipes are 36" API 5L Grade...

Good morning, i've some problems with the design of eccentric conical reducer, particulary: i define the reducers's conical thickness using the ASME SEC.VIII div 1 UG-32 (f). This paragraph says to calculate the reinforcement when require by the rule in 1-5(d) and 1-5(e): these statement at (a)...