How Grading Agencies Establish Lumber Design Values Originally published in SBCA Magazine January 16, 2024 Nearly all roof trusses and floor trusses are created using cutting-edge software. Embedded in that software are engineering principles outlined in the National Design Specification, Design Values for Wood Construction (NDS), as well as published design values for the sizes […]

This week the Pole Barn Guru addresses reader questions about ventilation needed for a new attic with metal ceiling and blown-in insulation, a confirmation for endwall needing stitch screws for shear, and if adding sheathing to an existing pole building would add value. DEAR POLE BARN GURU: I bought a house with a pole barn […]

What to do About Possible Roof Condensation? Reader JEFF in ADEL writes: “Hello, I am going to order Post Frame building materials and am working on details. The question about condensation is driving me nuts as this is a big project for me and I don’t want a wet building. It will be a 30x48x11 […]

Do You Provide a Service to Install the Kits? This question was asked by reader DAVID in HAMILTON. Your new Hansen Pole Building kit is designed for any average physically capable person, who can and will read and follow instructions, to successfully construct their own beautiful building shell, without extensive prior construction knowledge (and most […]

This Wednesday the Pole Barn Guru answers reader questions about whether or not Hansen has sold a building in San Diego County, CA, a building with a design wind speed of 150mph, and a recommendation for use of PermaColumn wet set brackets. DEAR POLE BARN GURU: Have you sold pole barns in  San Diego County, […]

Open Cell Spray Foam to Roof Steel – When Insulation is Done Wrong Reader JOSH in FARMINGTON writes: “I recently had a pole barn built and after doing a lot of research, went with 5″ of open cell under the roof and on the gables. I did not have any kind of vapor barrier, as […]

How to Best Insulate an All-Steel Building I know lots and lots about post frame buildings, however when it comes to all steel buildings (PEMBs – Pre-Engineered Metal Buildings aka Red Iron) I go to an expert. Today’s expert is John Lyle McInroe aka Mr Bee Happy, he has been in the building industry since […]

This week the Pole Barn Guru answers reader questions about cleaning up rough cut lumber that has greyed from exposure to the elements, advice on house wrap and insulation, and the ability of flat purlins over trusses to carry a load in Kentucky. DEAR POLE BARN GURU: My barn project has been a long drawn […]

Best Source of Off-grid Power Reader CONNIE in WAUKESHA writes: “When you’re off grid 1. What is the best source of power 2. Is there any window and door window grates to keep bears out?” Solar power jumps to mind for most of us when it comes to off-grid energy. This sun-powered option, including photovoltaic […]

Help – My Hobby Shop Has Wall Condensation Reader EVAN in PHILADELPHIA writes: “Hi there, I recently constructed a small 20x20x10 pole barn for use as a hobby shop (woodworking, etc.). The eaves have vented soffit and the roof has a ridge vent. On the interior I did a metal ceiling with blown in R-C38 […]

This Wednesday the Pole Barn Guru answers reader questions about use of 6 mil plastic vapor barrier in Michigan, if Hansen provides the option of a precast concrete pier to keep columns out of the ground, build heights, and “if anything needed between interior PVC panels, closed cell spray foam and the exterior metal siding.” […]

How to Read Truss Design Drawings This invaluable information is provided compliments of Structural Building Components Association (SBCA). Should you be considering purchasing trusses on your own, it will be to your benefit to familiarize yourself. Trusses are incredibly efficient structural framing solutions and, consequently, are used in most of today’s light-frame wood construction projects. […]

Flat Use Factor (Cfu) for Dimensional Lumber For those who have not had their eyes glaze over from my recent articles on S (or Sm) Section Modulus or Cf (size factor adjustments), I bring, in all its glory, Cfu (Flat Use Factor). Although produced in a factory environment (a saw mill), wood is a non-uniform […]

This week the Pole Barn Guru answers reader questions about any added features for “rain country” like western Washington, use of UC-4B pressure preservative treated columns in a high water table area, and the options of a sliding door vs a sectional overhead door in an RV storage building. DEAR POLE BARN GURU: Do many […]

NDS Size Factor (Cf) for Lumber Continuing explaining terms used in a decade old article of mine (https://www.hansenpolebuildings.com/2014/08/lumber-bending/) is Cf (size factor, also known as width adjustment factor). NDS (National Design Standards)design values for SYP (Southern Yellow Pine) are specified by size due to actual, physical in grade testing, whereas other lumber species’ design values […]

Section Modulus (Sm) for Lumber Nearly a decade ago I penned an article explaining lumber bending stress: https://www.hansenpolebuildings.com/2014/08/lumber-bending/ After 10 years, a reader nicely told me I did not explain where some terms in this article come from. One of these is Section Modulus (S or Sm in calculations). Let us take a visit to […]

This Wednesday the Pole Barn Guru answers reader questions about a home owner asking builder to install housewrap on the roof, the best solution to insulate underside of roof, and what the best fastener for screwing steel to ceiling or roof trusses would be. DEAR POLE BARN GURU: Pole Barn Guru, thank you for your […]

What Does JS 1000® Screw Plating Mean to You? Most post frame buildings have threw screwed steel roofing and siding. Industry standard #9 or #10 diameter screws are zinc plated and should resist 80 to 100 hours to red rust under salt spray. In other words, expect these screws to prematurely rust, compromising structural integrity […]

Help! Help! PEMB Insulation/Ventilation Reader JD in ANDERSON writes: “Dear Guru, I am finally ready to build my dream shop, rec space. Slab is poured. Will be 30x50x16 with (2) insulated panel 12×14 overhead doors in one of the 30ft ends. My question is about ventilation / insulation. To meet my budget, I chose a […]

In this Wednesday’s Ask the Guru, Mike answers reader questions about the use of bituthene to wrap the bottom of posts in addition to the treatment, the possibility of a two-story post frame building, and if one can convert an existing Hansen Building into a “barndominium” (residential unit). DEAR POLE BARN GURU: Hi Mike, getting […]

Pole Barn on a Slope – Can I use ICFs? Reader NATHAN in WASHINGTON writes: “I am hoping to construct a pole barn with a garage with attic storage and an apartment on the back as well. I have a couple questions. First, the site is on a slope, so I think we need to […]

Post Footing and Site Leveling Reader KEVIN in PAOLA writes: “I’ve been working with Cory on my building design and had a question regarding leveling my site and setting my posts. The plan is a 40′ x 60′ building with a 17′ eave height. On the south side, there will be a 12′ attached shed […]

This Wednesday the Pole Barn Guru answers reader questions about a village or township requiring you to put a full foundation in for a pole building, whether a pole building is “hurricane proof,” and the potential use of drill-set brackets to set 6×6 columns on an existing slab with thickened edge. DEAR POLE BARN GURU: […]

One End of My Pole Shed is Moving Up Reader JOEL in GULLY writes: “I have a question for you, I built a 24 x 30 foot pole shed with ten foot side walls about 30 years ago, I dug the poles down 60 inches and the building sat perfect for 25 years, then a […]

Roof Purlins for a U.K. Pole Barn Reader KEN in CHERTSEY, U.K. writes: “With 10.8′ truss spacing @ 19.64° slope and 39″ purlin spacing, would 2″ x 6″ purlins (on edge) be sufficient for steel clad roof unlikely to ever see more than 4″ snow for more than a few days?” I don’t often get […]