# Quick math problem for you guys.

Discussion in 'Members' Lounge' started by jamesA, Jun 10, 2014.

1. ### jamesAI'm a gun addict now.VIP

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It's been too long since I've use any real math. I need some help in finding the surface area of my roof.

It's 24 ft wide by 48 ft long with a 42 degree roof. My uncle just stopped by and said he'd do it if he had help, but he can't, and I need to replace 4 of the 6 trusses holding the roof up, then add at least 5 more because the 8 ft spans are too far apart to properly support any snow weight. Which is why the roof is caving in.

Anyway, I'm not good at this.

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2. ### E_SolSiMember of the 20 nut clubModeratorVIP

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3. ### jamesAI'm a gun addict now.VIP

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Thanks E!

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are both the front and back the same pitch? and the beam is dead nuts center? I know my house, the rear pitch is less than the front

5. ### jamesAI'm a gun addict now.VIP

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I dunno. These are rough estimates on my garage. It was a shitty build on a crappy pullbarn design. Each truss has 8 feet between it.

6. ### invisibledemonBoredModeratorVIP

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where do you live?

7. ### jamesAI'm a gun addict now.VIP

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Indiana, that's what they tell me anyway.

8. ### awptickesunimpressed by youVIP

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Never mind, I see it's a 42 degree roof now.

9. ### D16CivicMatt

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That's a big garage.

Are they trusses or rafters? Seems crazy to build something with an 8 ft span between supports. There essentially would be no support for each sheet of roof decking.

10. ### jamesAI'm a gun addict now.VIP

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Yeah it was built by a mechanic, three car garage.There's a 6 ft deep oil pit on one side even.

There are triangular trusses at 8 foot intervals and then he used 2x4s perpendicular to them to hold the plywood/shingles. The first hole started dead center between two trusses.

11. ### awptickesunimpressed by youVIP

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That's your problem right there... Not to code to begin with, he probably bought a single truck load of A-Frame supports and had to figure out how to make it work, lol.

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12. ### jamesAI'm a gun addict now.VIP

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Yup. That's the first thing dad and my uncle both said upon walking inside.

13. ### invisibledemonBoredModeratorVIP

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That far north, I'm surprised it didn't fail the first snow.

14. ### jamesAI'm a gun addict now.VIP

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Brian left in 2010, it started falling in on itself in a few places before that time.

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