Wikipedia article of the day for July 28, 2017

The Wikipedia article of the day for July 28, 2017 is Yugoslav monitor Sava.
The ship that became the Yugoslav monitor Sava began as SMS Bodrog, a river monitor built for the Austro-Hungarian Navy. She and two other monitors fired the first shots of World War I on the night of 28 July 1914, when they shelled Serbian defences near Belgrade. She fought the Serbian and Romanian armies during the war, and was captured in its closing stages. She was transferred to the newly created Kingdom of Serbs, Croats and Slovenes (later Yugoslavia), and renamed Sava. During the Axis invasion of Yugoslavia in April 1941, she fought off several air attacks, but was scuttled on 11 April. Sava was later raised by the Independent State of Croatia, an Axis puppet state, and continued to serve under that name until 1944 when she was again scuttled. Following World War II, Sava was raised again, and was refurbished to serve in the Yugoslav Navy from 1952 to 1962. After that she became a commercial gravel barge. In 2005, the government of Serbia granted her limited heritage protection after citizens demanded that she be preserved as a floating museum.

Wikipedia article of the day for July 28, 2017

Waterstop flanges on pipe sleeves

Waterstop flanges on pipe sleeves

Hello. I'm wondering if anyone has any installation details for pipe sleeves that incorporate waterstop flanges into them.

I'm not convinced of the necessity of the waterstop flange, can anyone clue me in? I feel that if water is seeping through the concrete, it will find its way under and around the flange in addition to the pipe.

Thanks for any advice.

Submitted July 27, 2017 at 02:47PM by 11001001btk
via reddit http://ift.tt/2w3Rbd0

Waterstop flanges on pipe sleeves

Need help to classify this beam loading for selecting bearings and designing a support

Need help to classify this beam loading for selecting bearings and designing a support

Hi All:

I need help from you guys to know if I am going on the right path and some suggestions on how to go about. I am designing a support, which would hold a rail at the center. The rails would be free to rotate about the support with human effort only. Meaning, the support will have bearings that make the rotation possible.

Here are two images with hand drawn FBDs and some decription

I need to design a support which would be attached to the center of the rails. The cross section of the rails are almost a reverse C shape (cross section shown in the image).

I think the loading on the beam can be considered Cantilever beam, taking into account only the half length of the rails. This, ofcourse, is only for the ease of calculation. The rails won't bend, as 1) I plan to have extendable arms on the support which will help to avoid the bending and 2) The rail is actually a rail system with static support plates, so its not going to fail at loading.

I found out the Moment to be 450 ft-lbs (Load of 150 lbs at 3ft distance). I need to resolve this into components to find the axial and radial loads. I plan on getting one bearing to handle the axial load and the other to handle the radial load. This is just so that I don't have to get expensive bearings that handle both. Further, I would like to know if I need to space my bearings and if so, how do I go calculate that.

I would be really grateful, if someone can walk me through selecting the bearings. I am having a hard time with this.

If my description is not clear enough, please feel free to leave questions in the comments and I will clarify them.

Thank you!

Submitted July 27, 2017 at 02:06PM by LordofMud
via reddit http://ift.tt/2vbIQHP

Need help to classify this beam loading for selecting bearings and designing a support

Do you ever get hundreds of pages of pdf specifications to review before you can bid a project in your job? What is your process?

Do you ever get hundreds of pages of pdf specifications to review before you can bid a project in your job? What is your process?

This is a regular occurrence where I work and often times 95% of the specifications are irrelevant to our product. I am curious if anyone else out there deals with this and would very much like to know your answer to the following:

What is your process for wading through hundreds of pages of pdf specifications and finding the information relevant to your company's product?

Submitted July 27, 2017 at 09:08AM by LaserBison
via reddit http://ift.tt/2h4XHO6

Do you ever get hundreds of pages of pdf specifications to review before you can bid a project in your job? What is your process?

What are the effects of non-zero rake angle on automobile front suspensions?

What are the effects of non-zero rake angle on automobile front suspensions?

I am accustomed to the effects of the rake angle on motorcycle front suspensions, however I cannot find any relevant information about the effects (or even use) in car front suspensions.

Until now I just assumed it was zero in all such applications, but after looking at a few RC cars (with quite aggressive rake and caster) I'm not so sure.

Submitted July 27, 2017 at 09:09AM by Rimio
via reddit http://ift.tt/2eQNcNr

What are the effects of non-zero rake angle on automobile front suspensions?