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    Loading on pin

    I would agree with Mech_Engineer, I think you'll find that the 1/4" plate will be a limiting factor in this design. Maybe you haven't got there yet, but I think you should check tear out shear on that plate section.
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    Statics Equilibrium problem

    I think you missed the 12 kN in your Fx equation. I didn't go through the math though.
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    Tablesaw featherboard substitute

    I've used the motorized versions and your intuition is correct. They are at a small angle so that the wheels drive the board into the fence while at the same time push it into the blade. I think an non motorized version would do the same. They don't mark up the board as far as I recall, they're...
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    Bank Strong room (Vault) special HVAC requirements

    Limited experience here, but most regional/provincial/state/national jurisdictions specify the HVAC standards that must be conformed to. As Steamking mentioned. ASHRAE is very common. Furthermore, there are aspects of the design that are left up to the designer/engineer in which case experience...
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    Calculating load per unit length

    You can't replace the distributed load with a point load to find the deflection, those are separate load cases and must be treated so as such. You can replace the distributed load with a point load to help find the vertical reactions at the supports.
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    Length of Work Term

    I will be graduating with an engineering degree (mechanical) in May of 2014. The city that I currently live in is not where I want to stay after I graduate; however, my wife is well established in her career and it makes sense for us to stay here for a year or so in order to save up money etc...
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    Post Your Summer/Fall 2013 Class Schedules

    Fall Semester: - Capstone Project - Heat Transfer - Motion Systems Design - Theory of Vibration - Technology and Society (Liberal Studies) - Mechanical Engineering Lab (electronics and measurements)
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    Train brakes by lack of pressure?

    257Bits was right on. I talked to my father about this last night. He has been a locomotive engineer for about 20 years and he described a similar system. He also maintained that the fire department should have had the locomotive engineer there when they shut off the locomotive. He also...
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    Mechanical engineering and hand drawings.

    I think that it is important to be able to sketch an idea for a design or what not by hand. Its the quickest and easiest method to get your point across. Most finished drawings like Steamking said are done on the computer.
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    Calculate the tensile stress anpplied at maximum load

    Part one is right although 5 significant figures is enough for this calculation. Are you currently taking a mechanics of materials course? Are you familiar with the equation: \sigma = \frac{F}{A} If so, how do you think it applies to part 2?
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    Engineering Job after Electrical Engineering Technology

    Just to clear something up: in Canada a technologist diploma is a 2 year program, a 4 year program is a degree. Technologists are very employable in British Columbia. I did the 2 year program and then continued with a degree. All of my classmates got a job after the 2 year technologist program...
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    Using Ashby's Tables

    In a sense, yeah, you are kind of free to move that line around depending on what you are trying to do. At this stage in the game you aren't trying to select THE material, but rather a family or families of materials. Ill try to show you with an example from a project I was working on. I was in...
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    Using Ashby's Tables

    I was referring to something that is not introduced until chapter 7: multiple constraints, so it doesn't really apply here. What is shown in Figure 5.9 are simply design guidelines. If you refer to Figure 5.10 you see the guidelines plotted on a E vs p chart with values ranging from 0.2 to 5...
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    Using Ashby's Tables

    I meant to say p1 = p2.
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    Using Ashby's Tables

    Your slope and y-intercept come from equating your performance equations: p1 = p1. You re-arrange that equation to obtain: m1 = Cc x m2, where m1 and m2 are your material indices and Cc is called the coupling constant. The coupling constant is the numerical value you get from the geometric and...
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    How to optimise stiffness for a projector screen?

    I was a cabinetmaker for several years. I can say that it will be a good idea to paint both sides with the same number of coats of paint. Otherwise one side will be more exposed to seasonal changes in humidity and the board will warp, even if screwed to aluminum brackets. Maybe not right away...
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    How do you join metal and metal (steel to aluminum)

    The epoxy will be more effective if you heavily scuff up the surfaces you want to join. Epoxy also works best with a fairly thick glue line, so I would not clamp them together too tightly. Tape can usually provide enough clamping force.
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    Buckling load equation for buckling struts

    I think it is because the effective length of the column is cut in half. By doing this and squaring it, it is like multiplying the equation by 4. You still need to use the actual length of the column in that equation. Someone please correct me if I am wrong.
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    Experimentally measuring torque.

    Depending on the accuracy you need to achieve, a simple torque wrench might be able to give you a reasonable value.
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    Job Skills Need some help on my resume. any advice would be appreciated!

    There is some inconsistent formatting throughout the document. The top section looks a little crowded to me and I would space it out a little bit. The general look and appearance will be your potential employers first impression. Also, if you don't already, I would recommend using a tailored...
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    Engineering What are some opinions of a Mechanical Engineering Technology degree

    I live in Western Canada and I just graduated from a Mechanical Engineering Technologist program, although I took a few extra math classes( Linear Algebra, Differential Equations, and Vector Calculus) and am moving to obtain a B.Eng. It seems to be a different situation up here. In our province...
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    Projectile Motion: Dropping a Package

    I'm just looking at your last post and answering this on my phone, so I'll be brief. Integrating a velocity does not give and acceleration, but a displacement. The derivative of velocity is acceleration.
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    Is there an instantaneous angular acceleration for a conical pendulm?

    How does the radius vector not change? Doesn't it's magnitude stay the same, however the direction is changing?
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    Fastener spacing and sealing with o-rings

    huntoon, I am mostly going through the through the calculations for theory as it is for a school project. I was just trying to factor in the force required to keep the o-ring in compression with the internal pressure working to un-seal the joint. Using this I was going to calculate the number...
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    Fastener spacing and sealing with o-rings

    I'll check that link out. To answer your question, the internal pressure is about 125 kPa and the flange area is 0.061 m2.
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    Fastener spacing and sealing with o-rings

    I have to seal a spherical container comprised of 2 hemispheres joined together with a bolted flanged connection. I plan on using o-rings to seal the liquid (water) in. The problem I am having is finding the minimum number of bolts required to compress the o-ring and seal the joint. Can anyone...
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    Needed background before ME

    My back ground before I started my degree was in cabinet making, so basically no experience with mechanical engineering. I had a strong interest and a good aptitude for math and science, and now I'm finishing up my 2nd year. Not that it matters but I am now 28 years old, so don't let age hold...
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    Where can i find quality '(not wikipedia) materialdata

    You might look into the software program called CES edupack.
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    Help my dad and I settle a argument

    If that is a hydraulic lift then standing on an arm should not increases the speed of lowering. In a hydraulic circuit that is designed to accommodate varying loads, a pressure compensated relief valve is used. This valve ensures that the speed of the actuator is constant under varying loads.
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    Post your spring schedule!

    Technical Communication 2 Instrumentation for Mechanical Systems Applied Differential Equations and Vector Calculus Ethics for Technologists Theory of Mechanisms* Fluid Power 2* Engineering Economics* Thermal Engineering 2 Machine Design 2 Mechanical Control Systems* Engineering Design Project...