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Quick Bid - How to account for the first and last studs when building out a Wall Condition (QB)

Views: 1427 Last Updated: 04/19/2022 01:30 pm 0 Rating/ Voters
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Question

How do I account for the first and last studs when building out a Condition for a Wall with "on center" spacing?

Discussion

Let's look at a very simple bit of takeoff and its associated pricing in Quick Bid:

OST & QB Stud calculation without starting stud

We've manually set the sides of our takeoff to exactly 10'00" and the height to 8'00" for this example (in OST, of course).

In Quick Bid, we set our on center measurement to 12" and our Waste Factor to 0, just for this example.

You can see that Quick Bid calculates exactly 320LF of studs required.

On the Materials Tab, we see that Quick Bid has (correctly) calculated 40 pieces (studs).

QB Stud calculation without starting stud

The way Quick Bid calculates for studs is dividing the total LF of stud (320LF) by the stud length (8LF). So, the result is 40 studs. However, this does not account for the beginning stud. 

If we use a Count object in OST, we can see that for a 10'00" long wall (8'00 height), we actually need 11 studs if they are 12" on center.

OST Count objects 12 inches on center

This means, for our square room, we are four studs short. Now, by default, most stud Items include 10% Waste Factor, but if you don't account for Waste in this manner, Quick Bid can accommodate you. 

Resolution

Assuming you are using On-Screen Takeoff and Quick Bid interactively, we're going to set the Condition Qty 3 to "Segment Count" in On-Screen Takeoff.

Note
If you are not using OST, you'll have to ask whoever provided your quantity survey to provide you with segment count.

OST Condition Properties dialog box

We can see that there are four (4) segments in our very simple example:

OST showing four segment count

Then, in Quick Bid, add your stud Item to your Condition a second time and override its calculated value with the segment count multiplied by the height of the wall. 

This adds one (8') stud for each segment of wall taken off in OST.

QB override calculated value with Segment Count times Height

Now, on the Materials Tab, we see that Quick Bid has calculated 44 pieces (studs).

QB Stud calculation with starting stud

Taking this just a bit further, if you want to ensure you account for the finishing stud (the one at the end of the wall), you can double your segment times height value:

QB override calculated value with Segment Count times Height

Now, on the Materials Tab, we see that Quick Bid has calculated 48 pieces (studs).

QB Stud calculation with starting stud

Note
Is this perfect? No, of course not. You need to use the Waste Factor in your Item to account for the 'unknown' (damage, bad cuts, bad materials, extra bracing needed, etc.). This is just an example of how you can accomplish things in Quick Bid and On-Screen Takeoff with a little creativity.


Product documentation (user guides) describes functionality in the latest version of each major release and may not match the functionality in the version you are using. Please check the Product Information and Downloads pages by clicking one of the product buttons above.

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