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## Estimating
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Estimating could include material take-offs for simple quantities or complex pricing. Whether you... 
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### Length of Compound Angles
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  # Length of Compound Angles
  Posted by
    on May 16, 2024 at 2:02 pm
  I need the linear dimension of a Roof Ridge Vent. seems easy, until you think about it.
  I can’t apply a slope to a line much less a compound line slopped in two directions. Marking up on plan is way off, marking up on elevation only gets me halfway there.
  To complicate things, the slope isn’t consistent, and I’m trying to avoid more custom columns. 😜
  Ideas?
    replied 
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  ### 
  Member May 16, 2024 at 2:32 pm
  Points: 1,248Rank: UC2 Brainery Yellow Belt !
  Sounds like you are talking about measuring between 2 points in and out of the paper?
    ### 
    Organizer May 16, 2024 at 9:45 pm
    Points: 23,914Rank: UC2 Brainery Brown Belt III !
    Yes Sir. Maybe I’ll just be proud I explained it well enough that you caught it. LOL
  Member May 16, 2024 at 9:02 pm
  Points: 27,137Rank: UC2 Brainery Advanced Brown Belt I !
  I’d suggest recreating the triangle under the ridge (or valley) over on the side of the drawing using sketch to scale.
  Start by measuring the horizontal length (run) on your plan sheet. Duplicate this length as a horizontal sketch to scale over on the margin. Next capture the “rise” of the roof from an elevation view. Draw this as the vertical leg of your triangle using sketch to scale at the end of your previously drawn horizontal length.
  Now use your “ridge cap tool” to connect the dots creating the 3rd leg of your triangle.
  Takes a couple of steps, but no extra columns are required. 😎
    I’ll have to play around with this one David. Thanks for the idea!
      ### 
      Member May 21, 2024 at 7:18 am
      Points: 27,137Rank: UC2 Brainery Advanced Brown Belt I !
      Had another thought for you on this 
      This would be a 5 – click method:
      1. Select your custom tool – note that it would need to be a polylength tool
      2. Click on the starting point of the valley/ridge – call this the “A” point
      3. Click on the end of the valley/ridge on the plan view – the “B” point
      4. Extend the measurement line perpendicular to your “AB” line a length equal to the rise to establish your “C” point. Finish the measurement here.
      5. Select the “Subtract Control Point” tool and remove point “B”. This leaves you with the measurement along the slope from “A” to “C”.
      I’ve been using a similar process recently when I need to offset at line – say for paving restoration along a curbline. I start on the curbline (my “A” point), move out the specified distance (“B” point), place my next point along the curb at a direction change (“C1” point), then move out the specified distance perpendicular to the line at the “C1” point to establish my “D1” point and then continue along establishing a series of “Cx” and “Dx” points. Once I’ve gotten to then end of the measurement I select the “Subtract Control Point” tool and delete the “C” points. What is left behind is offset from my baseline consistently by the distance between the “C” and “D” points. This also works with area tools, but you have to pick your return pass points carefully to avoid crossing the measurement lines…
      This take some practice, but avoids having to create multiple offset lines…
      * 
        ### 
        Member May 22, 2024 at 1:16 am
        Points: 13,846Rank: UC2 Brainery Blue Belt III !
        Have you got a screenshot of what you are doing in your example @David Cutler ?
        + 
          ### 
          Member May 22, 2024 at 7:07 am
          Points: 27,137Rank: UC2 Brainery Advanced Brown Belt I !
          Hopefully these will help 
          In this example I want to measure a sawcut 2 foot off of a curb line. Basically follow the steps as outlined above. It takes a few steps and looks a bit choppy when I’m zoomed in this tight, but it works.
          🙂
          !
  Member May 16, 2024 at 10:08 pm
  Glad to plant a seed  ! Looking forward to hearing what you come up with.
  You could take this a step further and create a separate takeoff sheet for ridges and valleys using grid lines. Simply start your tool at a “zero point”, move over your run distance (don’t click on it!) and then up your rise distance and complete the measurement. Easy-peassy!
  Member May 17, 2024 at 1:40 am
  Points: 13,846Rank: UC2 Brainery Blue Belt III !
  I had this problem when I started looking at roofing timbers @Troy. Although, Revu has the cos and tan functions available for use in formulas, I couldn’t find a way to get these to work.
  I think that is when I first looked at power query – sorry!
  My set up is now quite simple – measure the length of the valley rafter on plan and assign two angles – one for the pitch of the roof and another for the angle away from the main rafters.
  Export the markup list to a csv and then let Excel do the rest.
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