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How To Measure A Hip Roof From Blueprints

 
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Old 02-02-2018, 12:15 PM   #1
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How To Measure A Hip Roof From Blueprints


Ok Iím relatively new to the hip roof blueprints so how would I measure the square footage of a hip roof from a set of architectural drawings?
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Old 02-02-2018, 12:19 PM   #2
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Re: How To Measure A Hip Roof From Blueprints


Same as any triangle.

one half (base times height).

There are pitch calculators on the web that will help measure the height based on roof pitch.

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Old 02-02-2018, 12:20 PM   #3
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Re: How To Measure A Hip Roof From Blueprints


Would I measure the ridge from the birds eye view or find the elevations that show the ridge and measure from there?
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Old 02-02-2018, 12:24 PM   #4
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Re: How To Measure A Hip Roof From Blueprints


Right but how do I find the height from the birds eye view? I canít can I? That wouldnít be right I donít think
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Old 02-02-2018, 12:34 PM   #5
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Re: How To Measure A Hip Roof From Blueprints


Scaling ruler would be one method.
Or look at the framing prints that give more detail.
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Old 02-02-2018, 12:34 PM   #6
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Re: How To Measure A Hip Roof From Blueprints


Can anybody help me. Iím kinda in a hurry lol
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Old 02-02-2018, 12:35 PM   #7
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Re: How To Measure A Hip Roof From Blueprints


Scaling from the eave to the peak would be correct? How do I calculate in for the pitch since the roof is not flat?
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Old 02-02-2018, 12:43 PM   #8
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Re: How To Measure A Hip Roof From Blueprints


Try this:
Use the run measurement and multiply by the pitch multiplier.
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Old 02-02-2018, 12:45 PM   #9
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Re: How To Measure A Hip Roof From Blueprints


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Originally Posted by Jboogy66 View Post
Scaling from the eave to the peak would be correct? How do I calculate in for the pitch since the roof is not flat?
The scaling number is the run. Use the multiplier to find the length of the rafter which would be the triangle height.
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Old 02-02-2018, 12:48 PM   #10
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Re: How To Measure A Hip Roof From Blueprints


And that gives me what? The total height from the eave to the ridge?
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Old 02-02-2018, 01:00 PM   #11
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Re: How To Measure A Hip Roof From Blueprints


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Originally Posted by Jboogy66 View Post
And that gives me what? The total height from the eave to the ridge?
Gives you the height of the triangle for the calculation you need for the hip. Base is scaled from fascia to fascia. Do the math and you have the square footage.
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Old 02-02-2018, 01:04 PM   #12
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Re: How To Measure A Hip Roof From Blueprints


So just multiply the whole base by the multiplier and thatís it?
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Old 02-02-2018, 01:32 PM   #13
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Re: How To Measure A Hip Roof From Blueprints


Take it to your roofing supplier and let them do it.

How are you a roofer and you don’t know how to do a roof takeoff?
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Old 02-02-2018, 01:42 PM   #14
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Re: How To Measure A Hip Roof From Blueprints


Quote:
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Take it to your roofing supplier and let them do it.

How are you a roofer and you donít know how to do a roof takeoff?
He said that he was new to doing this from plans.

He also said that he was in a hurry for the free advice...good luck to him on that score.

Andy.
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Old 02-02-2018, 01:44 PM   #15
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Re: How To Measure A Hip Roof From Blueprints


Because Iím new to doing it is the whole reason Iím on here asking. U must be fun to work with. Thanks for the help ??
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Old 02-02-2018, 01:44 PM   #16
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Re: How To Measure A Hip Roof From Blueprints


Quote:
Originally Posted by Big Johnson View Post
Take it to your roofing supplier and let them do it.

How are you a roofer and you donít know how to do a roof takeoff?
My thoughts also. This is pretty basic math.
If you are estimating / quoting a job, you stand to get yourself in some serious financial trouble if you can't get through a simple roof square footage take-off. Get some mathematics help from a private tutor or your local community college.
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Old 02-02-2018, 01:48 PM   #17
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Re: How To Measure A Hip Roof From Blueprints


Why can people not just offer advice rather than belittling someone. I come here asking help from hopefully someone who knows how to since Iím relatively new to this and I get slammed. Do u know a good tutor maybe they can help
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Old 02-02-2018, 02:05 PM   #18
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Re: How To Measure A Hip Roof From Blueprints


Don't be so thinned skinned man, it's not that big of a deal.

As was said before. looking at the triangle that the roof plane looks like on the plans, you multiply the base (the long part of the triangle) by the height of the triangle (the peak of the triangle down to the base) then divide that in half.
Then take that last number and multiply it by the number in the "FACTOR" category that Jlhaslip posted and bam! you have the total sq. footage of the roof.

For example, let's say the plans show a 5 in 12 roof pitch and you scale the roof plane at say 22' long (the base) and 13' high (the height). you can go like this 1/2 x 22' = 11' cool?, then 11' x 13' (the height) = 143 sq. ft.

Then take the 143 sq. feet and multiply that by the 5:12 pitch FACTOR (=1.085) so you have 143 sq. ft. x 1.085 = 155 sq. ft. of roofing surface.

Are we groovy now?

Andy.
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Old 02-02-2018, 02:07 PM   #19
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Re: How To Measure A Hip Roof From Blueprints


Quote:
Originally Posted by Jboogy66 View Post
Why can people not just offer advice rather than belittling someone. I come here asking help from hopefully someone who knows how to since Iím relatively new to this and I get slammed. Do u know a good tutor maybe they can help
Call Joe Manchin

tel:304-342-5855
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Old 02-02-2018, 03:47 PM   #20
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Re: How To Measure A Hip Roof From Blueprints


You need to learn how to do the math for the slope. I can read a roof slope by looking at it but........
GAF made a plastic business card that had some cut corners on it. If you couldnt read a roof pitch by looks.....You would hold the card up to the gable and keep rotating the card till the angle matched. Under the angle was the correct pitch and per ft value.
A handy thing if you can find it

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