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  • CCW or CW Rotation? | Eng-Tips
    If one looks at an electric motor the rotation can be CW or CCW depending upon which end of the motor one is viewing from Dumb question but I have forgotten how to determine CCW or CW so as to order a replacement Having a senior moment I suppose! [ponder] Thanks! Happy New Year!
  • 2x100% or 3x50% pumps in power plants | Eng-Tips
    Hi! When deciding which configuration of pumps to use in a power plant (feedwater, condensate, cooling systems, ), I always have the same doubt, 2x100% or 3x50% As far as I know, 3x50% configuration are normally more expensive than 2x100%, but allows you to use just one pump if the duty is
  • Shear Deflection | Eng-Tips
    Hi all, I'm looking into timber design at the moment, and I've noticed that many design guides consider both bending deflection and shear deflection (the sum of them usually) to calculate the total instantaneous deflection We are all familiar with the equations for calculating bending
  • Problem! Open drawing, views replaced by crossed boxes!
    I've just opened a drawing, which was sent to a client a week ago and was fine (showing four views of a part) to find that all my views are now just dashed boxes with a cross through! What has gone wrong?! Part is in the same folder as before (all parts and drawings are in one folder) and
  • Maximum Slope for sewer PVC pipes 8 in and above | Eng-Tips
    Good Day, Is there a maximum slope for sewer pipes? I could only find the minumum slope for each pipe sizes in the 10 state standards I am looking for an information resources that states that there is a maximum slope that will leave the solids behind if the water moves to fast , or if I am
  • AASHTO Design Vehicles | Eng-Tips
    Does anyone know what a WB50, WB60 and WB62 really are? What type of vehicle are they and when are they typically used? And vice-versa, what design vehicle is typical of an automobile carrier, gasoline container truck, delivery truck to big box retail store, etc?
  • Shear Pin Design | Eng-Tips
    I've never really dealt with this before and want to make sure my thought process on this Setup A shaft (Di) feeds into a receiving hub (Do) A shear pin of diameter, d, will go through a radial hole that is drilled through both the shaft and the receiving hub The length of the shear pin
  • Sprinkler in skylight ceiling pocket | Eng-Tips
    A skylight in an otherwise unobstructed ceiling - should the sprinkler under the skylight be with-in 12" (1" - 12") of the skylight or do obstructed rules apply?
  • Settlement calculation using Excel spreadsheet | Eng-Tips
    I am looking for spreadsheet programs to calculate soil settlement Is there anyone has spent your valuable time and effort to develop such programs?
  • auger refusal standard | Eng-Tips
    Is there a standard for definition of auger refusal on rock when drilling? I have language in a workplan that states soil stabilization will occur to bedrock (known elevation) or auger refusal the state came back wanting to define auger refusal I seem to recall 6 inches in 15 minutes from





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