Rafter spacing for pole barn metal roof code#
Rafter spacing for pole barn metal roof professional#

Should I attach 2×10’s to the poles and put purlins on top of them as if continuation of the building, or should I put a ledger across the side and build accordingly. You can read more about them here: Īs to where we do work, Hansen Pole Buildings provides complete custom designed pole building kit packages anywhere in the United States – including Macomb Township.ĭEAR POLE BARN GURU: I want to add a lean-to on my 42 x 48 pole building. Macomb Township does have an unusual requirement for any type of building – “rat walls”. Should you (or any other reader) find a jurisdiction which has contrary ideas, please let me know – as I will have a friendly (and persuasive) discussion with the jurisdiction’s legal counsel. Jurisdictions can legislate what a building looks like, however it would be improper to attempt to limit a conforming structural system. I’ve found jurisdictions which have tried to prevent “pole barn” construction within their jurisdictions, and we have successfully won the battle every time.

Rafter spacing for pole barn metal roof code#

On endwalls, with a clearspan truss, it is possible to have posts only at the building corners.ĭEAR POLE BARN GURU: Does Macomb Township allow pole barn construction for a garage? Do you work in Macomb Township, MI? PETE IN MACOMBĭEAR PETE: Pole barn (more technically “post frame”) construction is a 100% code conforming construction system. On fully enclosed buildings, the wall girts normally become the dictate on how far apart columns can be placed – they usually will fail at 16 foot pole spacing (again, depending upon wind loads).įor buildings where one or more sidewalls are partially enclosed, 24 foot spacings between columns can be fairly easily accomplished. As a general rule, the best “bang for your buck” is most typically spaced every 12 feet, although 10 foot and 14 foot spacings are often a close second. The nicest looking widow’s peak at time of construction, can end up being far less than pretty if it sags over time.ĭEAR POLE BARN GURU: What is your typical post spacing and what is the maximum spacing the poles can be spread out? RICK IN WATERLOOĭEAR RICK: The most efficient post spacing is going to depend upon the wind and snow load conditions at any particular given pole building site.

Rafter spacing for pole barn metal roof professional#

The supporting roof purlins can be capably designed by the RDP (Registered Design Professional – architect or engineer) who has done the building design. The truss manufacturer needs to be aware of the dimensions of any overhangs beyond the end of the building. Now for the math….the roof surface of the widow’s peak must be accounted for in the design of the endwall truss, as well as the supporting roof purlins.

The distance extended beyond the building endwall, or other endwall overhang is up to the eyes of the beholder, but is most typically three feet. The width of the widow’s peak is usually 1/3 rd to ¼ of the width of the gabled end of the building. More often than not, they are strictly for aesthetics.

In modern post frame construction, very few widow’s peaks are actually used functionally, other than as shelter to protect a loft door. Historically, they were used as a pulley support to raise hay bales into hay lofts. Didn’t know if there’s a correct mathematical equation for this? PHILIP IN NEW KNOXVILLEĭEAR PHILIP: There is some mathematics involved, but it comes from a structural standpoint, rather than aesthetics.Ī widow’s peak is an extended pointed overhang placed in the center end of a barn roof. Trying to determine the extension out from the ridge for the widow’s peak/ hay hood. If you want a quick answer, please be sure to answer with a “reply-able” email address.Įmail all questions to: POLE BARN GURU: Building a 32’x 50′ barn that’s 32′ high. With many questions to answer, please be patient to watch for yours to come up on a future Monday segment. Welcome to Ask the Pole Barn Guru – where you can ask questions about building topics, with answers posted on Mondays.