Tag Archives: interior columns

How to Clearspan a 60’ Wide Monitor Barn Including a Loft

How to Clearspan a 60’ Wide Monitor Barn Including a Loft

Reader DANIEL in HADLEY writes: “ I am really liking the Monitor style barn. I however find the support posts for the raised portion very in the way for what I want. I am looking to have an open floor on a 60 x 60 Monitor build. Center section of barn 20 ft and each wing on side 20 ft wide as well. I would like to pull a vehicle into the center section of barn and make a 90degrees turn and park 4-5 vehicles in each wing. My problem is the support beams would hinder a lot of this. Is there a plan out there that would give me a 60X60 Monitor with the loft space, without the annoying, in the way supports? Heck I wouldn’t be mad if it had 2 In the middle at the 30 ft mark. But ideally none. I know I’m asking for unreasonableness, but it’s worth the ask, and if you have a solution for me could you link me to the resources I would need? Thank you!”

Nothing unreasonable at all. As I tell clients – your only limitations are imagination, depth of your pocket book and available space. We tend to attract clients who are looking for structural solutions everyone else will not touch. If you desire no interior columns, it can be done, we would utilize a set of parallel chord trusses at each side of your raised center to span from endwall to endwall. Trusses for 20′ wing as well as main (raised) center roof and floor trusses would be carried by these. These will limit your ability to place windows in kneewall above wings. Keep in mind, since loads on beams are a function of square of span, having columns at 30′ will reduce forces needing to be carried by a factor of four (and will similarly reduce your needed investment).

A 100×100 Pole Building, Shingles to Steel, and Double-Bubble

This week the Pole Barn Guru answers reader questions about the possibility of a 100′ x 100′ pole building, the consideration of switching from asphalt shingles to steel roofing, and if one can reuse the “double-bubble” when replacing roof steel.

DEAR POLE BARN GURU: Can I build a 100 ft X 100 ft. pole building? JOHN in PENSACOLA?

DEAR JOHN: While 100 foot clearspans can be achieved using post-frame construction, most building uses do not have this sort of requirement. In general, it will be far more cost effective to get your 10,000 square feet with a rectangular footprint of 60 to 80 foot in clearspan width. If you are limited, by property constraints to 100 x 100, but do not necessarily have to have a clearspan, a row or two of strategically placed interior columns can assist in keeping your building investment down.


DEAR POLE BARN GURU: I’ve got a question for you finally. I have a house with asphalt shingles at the moment and was thinking about switching to steel. If I were to remove the shingles, would I need to place latticed boards to keep the steel roof off the plywood to provide room for air movement? I’d use whatever underlayment is approved for the steel, but looking at a lot of your posts and comments, it’s got me wondering if I’m better off just going back to asphalt shingles instead and saving a lot of extra work.

I’m curious if in the case of placing the steel on the underlayment could cause some issues with condensation that may or may not make its way down the underlayment and off the roof. Would hate for any condensation to find its way into the plywood and become locked in causing rot. SETH in GRAND FORKS

DEAR SETH: Let’s start by looking at downside of shingles – https://www.hansenpolebuildings.com/2015/03/shingle-warranties/ and from Tim Carter https://www.hansenpolebuildings.com/2018/10/ask-the-builder/

For condensation to occur on underside of steel roofing, warm, moist air from your attic must be able to come in contact with roofing. Your plywood with an appropriate underlayment provide a thermal break keeping this from happening. You do want to make sure you have adequate eave and ridge ventilation https://www.hansenpolebuildings.com/2018/03/adequate-eave-ridge-ventilation/

Here is an actual “how I did it” story for you: https://www.hansenpolebuildings.com/2018/06/how-to-install-a-steel-roof-over-shingles/


DEAR POLE BARN GURU: I’m replacing my screwed down corrugated steel roof because the installer kinked the metal in a few places. Can I use the same double bubble vapor barrier or must i replace the vapor barrier too? It has a few holes in a few places in addition to the staple holes they made when applying it. JAVO in PRINCE FREDERICK

DEAR JAVO: Double bubble or other reflective radiant barriers only work to control condensation when they are 100% air sealed. You would be money ahead to order your replacement panels with an Integral Condensation Control factory applied and throw away your old double bubble. Please read more here: https://www.hansenpolebuildings.com/2020/09/integral-condensation-control-2/