gtaw, Thank you for the correction. That is what I get for not verifying info on drawings. This is probably why previous attempt to secure the grates by stick welding has failed! BTW, Interesting site. More to learn, thanks!
Guys,
Thank you for the suggestions. I am considering welding straps or tabs and considering using a J-hook to secure the grates. I am looking into the procedures to weld carbon steel to A536 cast steel. The J-hook would snag the end of the drain pipe. I am a bit concerned about fatigue with...
Posting a drawing of the drain assembly.
Thanks for the advice.https://res.cloudinary.com/engineering-com/image/upload/v1584123352/tips/Scupper_grate_ftb1dw.pdf
Gentlemen: I would like a welding procedure to weld a wrought iron grate to a cast steel scupper. The scupper is embedded in a concrete bridge deck. The bridge was built in the early 1970s. I do not have the grade of wrought iron of the specification of the cast steel.
Many thanks!!
I agree with Racookpe. Moltenmetal has good points. I avoid threaded whenever possible. The last fitting on vents, drains, wash stations, etc. use threaded.
Artisi, I am interested in a several hundred RPM. I am teasing out some of the esoteric details by comparing the Meakhail-Park paper and the MIT papers.... tedious.
Douglas
DubMac, thanks for the reply. Radial Vane Impellers are used in centrifugal pumps where the inlet is located at the centerline of the pump. The inlet of the peripheral pump is located at the periphery of the flow chamber on the opposite side of the stripper from the discharge port.
TenPenny, I...
I could not find any threads on Eng-Tips for peripheral pumps. Regenerative pumps were mentioned in two threads. One only suggested that a regenerative pump may be a solution, the other, which I cannot locate this morning, indicated that almost no one who relpied was familiar with this type of...
I am trying to calculate theoretical pump curves for a regenerative pump. I am doing an feasibility analysis. This type of pump is also referred to as a peripheral pump. These pumps are used in residential water systems and for automotive fuel pumps. They are used for high head, low flow...
I agree that it may be time to rethink the use of ultra-strength bolts if you are in the bush. I used to buy grade 8 bolts from Caterpillar, pricey but they came individually boxed....
Seriously, machinery, automotive & farm equipment suppliers generally have a supply of quality fasteners.
Your header could be as simple as a Tee fitting.
Your efforts should be concentrated on installing a larger pipeline as this will reduce your friction losses more than than improvements to your header.
1.25" diam x 0.4" long is a small manifold!
A "Y" configuration will give you less pressure loss. Unless the velocities are large, above 10fps, I doubt that you will tell the difference.
Are you blending two grades of gasoline?
If you can find "Analysis and Design of Flight Structures", possibly scanned by Google, I would expect that you can find out how to analyze the problem. I remember that they had good chapter on rivets & bolts.
Most machine design texts will address this quite well...
usually 2 diameters work...
