Calculating 2x4/2x6 Sill Plate

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Kratchmer
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Calculating 2x4/2x6 Sill Plate

Frustrated...  I finished my foundation package formulas yesterday and all is well.  The next thing to calculate is pressure treated bottom plate.  There is a single "P/T Sill Plate" item that comes with the software, but I do not understand the custom formula even after consulting the manual, and I can't get it to show up on my report even when I make sure the sequence number matches that of the report.  So, I tried to make my own items, which is what I'd rather do anyway, but I have run into a problem...

 

I only need two variables to be able to calculate the amount of 2x4 and 2x6 bottom sill plate and separate them.  I need some type of length variable that tells me the total length of the wall sections, and then also a wall thickness variable so I can create a condition in each item, so I can separate 2x4 and 2x6 sill plate.  The problem is, the 'length' variable is only available in the 'Wall' Wall Part type, and the 'Sill Width' variable is only available in the 'Sill' Wall Part type.  I can only specify one Wall Part type for an item, but the two variables I need are only available in separate types.

 

I did find somewhat of a workaround, where I edited the wall definitions and changed the 'Plate A' that represents the bottom plate to 'Log A' for the 2x4 wall types, and changed it to Log B for the 2x6 wall types.  I then created a condition where it only calculates each item for walls containing regions of Log A and Log B.  Problem with that is I'm needing to use the existing data in our plans that have already been drawn to do these takeoffs, and since the plans weren't drawn with these different wall definitions to begine with, my workaround doesn't work.  It only works with new plans that had these definitions set up before they were drawn.

 

Any input is welcome.  Thank you

Thank you

Bill Wimberley
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PT wall plates

Sam there are a couple ways to calculate PT wall plates. Both formulas below will take into account the thickness of the wall when calculating plates.

Method 1: If you edit an exterior wall you should see a Selections tab. Within the selections there is an option to select whether or not the bottom plate should be pressure treated. If set to yes then the standard formula that comes with SoftList will calculate the bottom plate as pressure treated. I am including the formula below. It is the one that is using the Custom Formula calculation method.

Method 2: I have created 2 versions of each exterior wall. I call the ones with pressure treated plates something like 2x4 Brick (1st) and the ones without pressure treated plate something like 2x4 Brick (2nd). The 1st version is typically used on the 1st floor and the 2nd version is typically used on the 2nd floor. In the wall definition for the pressure treated version I made the line on the outside of the stud pink as a visual clue which version I am using. So for example if I save a copy of the first floor to start the second floor I can tell from the pink lines that I need to change the walls on the 2nd floor to the 2nd version.

In the wall definition for the 1st floor walls I changed the bottom plate material to Plate (Pressure Treated).

I use the Lumber Format formula below to calculate the plates. For this to work you would need to create a Pressure Treated lumber table as well. 

Bill is the owner and maintainer of SoftPlanTuts.com

Kratchmer
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Thanks once again Bill.  I

Thanks once again Bill.  I got the stock formula to work.  I had a condition set incorrectly so it wasn't calculating anything.  Going to take the online SoftList course in a couple weeks.  Hopefully will gain some good info from it.

Bill Wimberley
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Condition

Glad you got it to work. Just out of curiosity, what condition was set incorrectly and what did you do to correct it?

Kratchmer
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In the properties Define Wall

In the properties Define Wall > Edit  I had changed all the 2x4 bottom plates to Log A and 2x6 to Log B (for my workaround I was trying.)  Once I changed them back to 'Plate A', and made pressure treated walls the default checkbox, they began figuring correctly.  On a side note... I can't figure out why it is calculating a small plate a 1.5x3.5".  Before I changed the formula to make it count pieces and it was still figuring them lineal, it showed 5 LF of this plate type.  I dont see any oddball walls on the plan.  Do you know where this is coming from?

Bill Wimberley
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Highlight Entities

Try right clicking the oddball entry in the report and select Highlight Entities. You should be switched to the plan and any walls that are counted by that formula will show as highlighted.

Kratchmer
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That was the first thing I

That was the first thing I did, it selects every wall in the house regardless of 2x4/2x6, interior or exterior.  A 1.5"x3.5" is a 2x4...  but even though all 2x4 walls are specified in the Define Wall properties as technically 1.5x3.5, they list the nominal size of 2x4 when displayed on reports.  I'm not sure where that nominal conversion in the program comes from.  But wherever that five linear feet is, it's not getting the nominal conversion.  Oh well.  It only shows up on this plan.  I've run reports on a couple other plans and it's fine.  I was just trying to learn how to troubleshoot this particular issue, a better understanding of the software is always good.

Bill Wimberley
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Wall

Looking at your image I would suspect either the Hidden wall in the bath or your double walls. Try editing each of these walls and uncheck "Include in SoftList" from the SoftList tab. Run your report again and see if that makes it go away. That should help you narrow down where it is coming from.

Larry
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I do a takeoff for the

I do a takeoff for the concreted floors and then take the total plate figure that Softplan gives me and divide by 3.  That gives me the total pt plate I need and then divide by 16 to get the total numbe of 16 footers I need.