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  1. imnoengineer

    Is RCP Pipe Suitable for Water Retention

    The length of the system dictates the flow line of the pipe to be at an elevation that causes the RCP pipe to hold water. Is this a problem?
  2. imnoengineer

    1 inch vs 1.5 inch Parking Lot Paving Overlay

    I am overlaying a large parking lot and have gotten bids from several contractors. All are using SF 9.5 asphalt, but one has suggested 1 inch instead of 1.5 inch. What are the pitfalls of this? Thanks.
  3. imnoengineer

    Grading By Hand Equation

    I had someone show me a matrix system to grade a site by hand. It involved taking the four corners of each box averaging them and then adding them all together. A positive meant you had export and a negative meant you had import. Let's assume we had 20'x20' grid boxes and the four corners are...

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