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  1. austim

    Effect of manufacturer supplied sunroff on crashworthiness?

    As a retired structural engineer (bridges and other fun stuff :-)) I have been asked to comment on the likely effect of a sunroof on the crash worthiness of a 4WD (Toyota RAV4, if that matters). Likewise, what about the resistance to falling objects? (eg tree branches falling after bushfire...
  2. austim

    excel 2002 - chart problem

    I have just tried to add a bar chart to show some values within a fairly large spreadsheet. The chart shows just what I want, provided that I have mouse-clicked within the chart area. But as soon as I mouse click anywhere else the chart disappears, to be replaced by a plain grey block. What...
  3. austim

    Power supply - International comparisons

    I am trying to compare electricity supply conditions (ie AC/DC, Voltage, Hertz) in UK, Australia, Japan, (and possibly other countries). Can anyone point me to a web reference that would help me?
  4. austim

    Empire State Building - Wind deflection.

    Today I was asked by my daughter - how far does the ESB sway due to wind ?. (One of her neighbours had suggested three metres !!). Tall buildings are not in my area of expertise, so I visited the ESB official web site, and found this: "The Empire State Building does not sway...it...
  5. austim

    origin of old large tapered flange beam?

    I am interested in finding out the likely origin of a large taper flange I beam (as a born and bred Brit I would normally call it a RSJ). Overall depth 910mm (35.8"), width 420mm (16.5"), web thickness 20mm ((0.79"), flange 28 to 37 mm (1.1 to 1.5"). I am only asking out of...
  6. austim

    Institution of Civil Engineers - Virtual Library

    Hi, all Are you looking for historic engineering papers (where historic means anything from 1836 to 2002)? If you are, try www.iceknowledge.com. This gets you to the Virtual Library of the Institution of Civil Engineers, with its searchable database of all papers and discussions published in...
  7. austim

    *.dwg file size curiosity.

    Hi, all. This is not an earth-shattering deeply technical problem, but it has the potential to keep me awake at night. I am hoping that someone can give me a logical explanation for something I observed just now. I opened a drawing - call it "Rev1.dwg". Win Explorer tells me it is...
  8. austim

    Design for ship impact

    This really can't be called a 'news clip', but is recommended viewing for all bridge designers, boat designers and 'believe-it-or-not' fans. 8-) http://home.attbi.com/~nwigen/TowBoat/towboat.htm
  9. austim

    Effects of local (point) load on large tube

    Hi, all. One of my clients has asked me how he should calculate the local stresses in a large diameter pile while it is cantilevering down from the piling gates, subject to current and wave load, before the toe is resting on the sea bed. He has all that he need to calculate the actual current...
  10. austim

    Displaying cell values in different colours depending on value

    Hi, all. Does anyone have a way of colour coding cell values (in Excel) conditionally? (eg, if a stress value exceeds allowable, display it in red, if OK display it in green) I would enthusiastically propose any simple working solution for 'Eng-Tip of the Year' :-)
  11. austim

    Plastic hinges - rotation capacity before fracture?

    I am trying to find a reliable way of estimating the maximum rotation that can occur at a plastic hinge before the ductility gives up and the member falls apart. What I need to do is to calculate the total amount of energy that can be absorbed while a member continues to bend up to eventual...
  12. austim

    comparative check calculations wanted

    Hi, all I have just analysed a simple 2-span continuous beam with four point loads, using 3 different programs. 2 of the three give identical answers, but not all three. I would welcome any additional solutions obtained from other packages. My problem is this : Nodes at...
  13. austim

    Changing tyre pressures while in motion

    Hi, all Can anyone tell me how the Hummer can change tyre pressures while in motion?
  14. austim

    How 'accurate' is FEM software?

    Hi, all. In the Structural engineers forum, some very interesting comments have been posted by Anthae (visitor) regarding the accuracy to be expected from FEM software (eg no better than 35%). I believe that Anthae's comments merit a new thread in their own right, and will be very interested...
  15. austim

    Prokon Demo download

    As those who have followed Mark10's thread re Staad vs the rest, I have been having difficulty in downloading the demo of Prokon, despite encouraging input from chandr. Now, I am glad to say, all is well. I have at last downloaded it from www.chempute.com/ftp.htm. I suggest that anyone...
  16. austim

    Vegetable oil as fuel for trucks

    I have a friend who is looking for good info regarding conversion of diesel engines (for trucks) to alternate fuels. In view of the current prices of standard diesel fuel, he is considering using vegetable oil. Can anyone tell him (a) what good reference sources are there? (b) would such a...
  17. austim

    adina 900 node version

    I am interested in buying the 900 node version of Adina (for structural analysis of 3D truss/frame/plate models), but want answers to a few basic questions before committing any of my hard-earned cash. I have, of course, contacted info@adina.com, but was very disappointed with the response...

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