Tag Archives: DIY Plans

Framing and Materials, DIY plans, and a Conversion

This Thursday’s blog is another bonus “Ask the Guru” answering reader questions about Hansen Kits framing and materials, if a readers structural plans are viable, and whether the Guru thinks an old pole barn can be converted into a Barndo.

DEAR POLE BARN GURU: Do your home kits come as a frame tight to the weather. Are the rooms already framed? GREGORY in SPRING HILL

DEAR GREGORY: Typically our post frame home packages are provided “dried in” – including all roofing, siding, windows and doors. We do have some clients who desire specific materials (typically a custom door or window), in those cases we provide openings.

We do not furnish materials for interior, non-bearing walls. History has shown us these materials are rarely adequately protected from weather, get used by one subcontractor or another, or walk away from job sites before it is time for their use. These are also ‘commodity’ materials, readily available from vendors such as your nearly The Home Depot.

 

DEAR POLE BARN GURU: I’m building one now myself. It’s 20’x42 The bottom floor is constructed of 4×6 post with 4×8 in the corners, walls are 5′ metal/foam SIPs as well as the subfloor on the 2nd floor. I’m doing homemade rafters with 2×6 lumber with 3/4″ osb gussets, glued and stapled 2″ -7/16′ staples on a 22.5 degree symmetrical design. I’ll be using milled 2×4 pine for my gussets on a 24″ center and 24 gauge metal roof. I’m planning on setting my trusses on a 48″ center. Will that work? JOHN in PERRYVILLE

DEAR JOHN: It is highly unlikely any of your 4x posts will be structurally adequate to carry imposed loads. Depending upon grade of lumber being used for trusses, applied wind, snow or dead loads, they may or may not be adequate. I would strongly suggest you engage a registered professional engineer to visit your building, inspect it and make recommendations for any fixes in order to prevent a catastrophic collapse.

 

DEAR POLE BARN GURU: Can we make this post frame barn into a barndo? If so, what do we need to consider to make sure it’s structurally sound? It’s approximately 40×80 not including the lean to. ASHLEY in NEVADA

DEAR ASHLEY: You should engage services of a Registered Professional Engineer to do a physical examination of this building and make recommendations appropriate to upgrade it for residential occupancy. Most usually suspects will be inadequate diameter of column footings and lack of truss capacity to support weight of a ceiling. Adequate attic ventilation will also need to be addressed. Given age of structure, you may find it more expensive to upgrade it, than to start from scratch. Plus, starting from scratch, you have an ability to create something best meeting your family’s wants and needs, as opposed to trying to fit what you want, into someone else’s old box. Best of success in your journey.

Finding Stuff on the Road: Building Department Documents

Finding Stuff on the Road

Author’s Note: This is part 7 of a series of blogs written from a 6500+ motorcycle trip from WA to Ohio and back.  See Blog from Oct. 15th for the beginning…and hang on for the ride!

There are many Building Departments who offer nifty little handouts to property owners who want to design and construct their own post frame buildings. Most of these are one or two page documents and cover a relatively limited number of cases (typically smaller buildings). If one follows their guidelines, a structural Building Permit will be issued (provided the building meets with any other requirements imposed by the Planning and other related jurisdictional departments).

I picked up from one of the states I visited on my trip, a County Construction Code Office 10 page document on how to design a pole building. Most of the document deals with how to design truss carriers (they assume all post frame buildings will have columns every eight feet, with trusses every either two or four feet) to support trusses between columns. The other feature stressed in the document is adequate footings to keep buildings from settling.

There are many things the document overlooks. It gives a description of how to design truss carriers, but not how to attach the carriers to the columns. It gives concrete footing sizes, but fails to address column uplift and overturning due to applied wind loads.

Interesting, of note, all of the footings are greater in size than any concrete “cookie” would ever possibly support!

To learn more about concrete cookies: https://www.hansenpolebuildings.com/blog/2012/08/hurl-yourconcrete-cookies/

Building DepartmentEven for a modest sized building (30 feet wide) with generally accepted soil bearing pressure (using 2000 pounds per square foot as the soil bearing capacity), their prescriptive footing requirement takes over 600# of concrete per hole! Not too many people are going to mix up 10 60# bags of sackrete for each hole, so the potential for abuse exists.

Also not addressed by the document are…(and I shudder here) the wall columns, girts or purlins!

What all of these prescriptive requirements got me thinking about was – I wonder if the jurisdiction’s attorneys are aware their Building Departments are putting themselves in the position of being the Designer of Record for buildings constructed using them? Facing reality, if I was to construct a pole building, using the methodology ascribed to be one of these departments, and my building came down, I am thinking my attorney would have a field day with it!

For more information on prescriptive requirements: https://www.hansenpolebuildings.com/blog/2012/02/prescriptive-requirements/

See you tomorrow….for Part 8 in the series of my cycling across the upper U.S.