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Hello, I am working on an international project and considering using the European HE Beam - HE160(B) for a skid frame. The steel was identified as: HE160(B) S275JR04. I found out the S275 refers to 275 N/mm2 Yield Strength. I had no success finding information on the "JR04". Please advise...

I have been searching to no avail for the difference between A312 TP304 and A312 13b TP304. Any information would be appreciated.

Hello, We need a 20" x 12" Reducer for 720 psig design pressure @ 120 F. Piping is A106 Gr. B. Per formulas in B31.1, this requires Schedule 40 on the 20 inch and STD wall on the 12 inch. We found out that "purchased" fittings above 12 inch are only available in STD wall and for the 20 inch...

NFPA 101-2015 Section 7.3.3.3 states: "Stairs and ramps that continue more than one-half story beyond the level of discharge shall be provided with an approved means to prevent or dissuade occupants from traveling past the level of discharge during emergency building evacuation." Please advise...

I was trying to find a formula for the stress in a thin rectangular plate with 3 edges fixed and 1 Free with Applied Moment. I have done a FEA run but would like to back it up with a "classical hand stress calculation." I tried Roark's formulas for stress and strain but did not find this case.

We have a project where the preferred piping design code is EN 13480 which requires the use of "harmonized" steel. However, our client has accepted the use of ASME SA 312 TP 316/316L from Particular Material Appraisals (PMA). So my question is: can we still design and inspect to EN 13480 and...

I am trying to learn about ASCE 7-05 Chapter 12-15 as applied to skid based equipment. Specifically, the lateral seismic base shear force depends on the non building structure operating weight. If the skid has a platform live loading requirement of 100 psf, should none, some, or all of this...

Please inform me if you know of a steam pressure regulator rated for 680 F @ 200 psig. Most of the ones I have seen are only rated to 650 F.

I am looking for a method to determine the load split between parallel beams in an enclosed frame. For example, consider a rectangular frame with W10 x 30 over the entire perimeter and W8 x 21 running lengthwise down the middle. Also, the top of the frame is covered with a thin steel plate and...

I was hoping to receive suggestions on figuring out the snow load for a horizontal cylindrical tank. I read ASCE Chapter 7 Snow Loads which, of course, deals with roofs. I was thinking of trying to apply Fig. 7-2b with an average angle of 45 deg. Tank is outdoors and unheated. Diameter is 10...

I am a mechanical engineer interested in learining ASCI 7-05 Chaper 6. I apologize for my following rudimentary questions. I would like to figure out how to solve a basic problem: determine the wind loads on a foundation for an enclosed box shaped building with roof slope less than 5 degrees...

Part 1 of AISCM ASD 9th Edition tabulates properties for combined sections. I know the general practice is to weld the beams to form the combined sections. However, is there a method, procedure, or calculation, to determine bolt size and spacing for joining two beams so they may be...

I have a simple question and I have probably overlooked something. The stress from sustained loads in the piping codes are computeted with: PD / 4t I was wondering why this are not based on the more limiting hoop stress: PD / 2t ?

Was looking for simple guidelines available to determine the velocity profile for air flow through the branch of a tee with a cap on one of the runs. This is a CFD problem I know but was looking for some general graphs or formulas.

ASME B31.1 Paragraph B.4.1.1 indicates that for socket weld connections the branch size must be the smaller of NPS 2 or 1/4 the nominal size of the run. Would this prohibit, for example, installing a 1/2" sockolet on a NPS 1.5 pipe? Is there a difference if the branch terminates in a drain...

I am a ME by trade but am trying to learn how to apply ASCE 7 to this particular problem: * Corrugated sheet steel horizontal roof (angle ~ 1 degree) * Roof supported by four posts and otherwise open. * Spec provided for wind pressure and velocity. I am trying to select the thickness, pitch...

We have a new U-Stamped pressure vessel in our facility. Due to service requirements, it was PWHT. For several reasons, the vessel arrived without the thermowells welded to the vessel (although the coupling for the thermowell was welded). We are trying to decide the fastest and most cost...

Please provide or refer me to guidelines for steam trap installation for a series of steam jacketed valves in series connected with jumpers. The basic question is how frequently steam traps should be installed (e.g. for every three valves in series, for every 10 ft total, etc., etc).

OK, this is the situation I have. I hope someone can help! * Fisher control valves handling anhydrous ammonia (liquid and vapor). * Client spec requires B31.3 compliance. * Client opinion (not spec) is anhydrous ammonia is Catefory M fluid service. * Client asked for NDE requirements on...

Please inform me of a method and equation to calculate the evaporation rate of water out the vent of a storage tank. The tank is 6 ft diameter and 8 ft tall with a 4" vent on top. I have found many equations for water pools, but I think this situation is different (small opening on large...