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 […]

This Wednesday the Pole Barn Guru advises readers on adding 6″ fill to the site and the affect it would have on columns, the use of XPS insulation between the steel and framing of the building, and some thoughts on building a 3 bedroom, two bath house. DEAR POLE BARN GURU: Hello, The site I […]

Structural Design of Stairs With Cutout Stringers Loading requirements for stair stringers are called out for in IBC (International Building Code) Table 1607.1. For one and two family dwellings, uniform live load is 40 psf (pounds per square foot) and 100 psf for all other occupancies. Although not expressly stated, one would assume one and […]

Avoiding Interior Ceiling Corners Cracking When a newer post frame home shows interior ceiling corner cracking signs at top floor in winter, this can normally be associated with truss uplift. Roof truss uplift occurs when truss bottom chord is exposed to significantly different moisture and/or temperature conditions than rest of roof truss. Truss bottom chords […]

This Wednesday the Pole Barn Guru answers reader questions about what best installed between ceiling liner and trusses and insulation recommendations in a new shop, advice on sidewall column size for use with double trusses, and the structural stability of a pole barn second floor. DEAR POLE BARN GURU: Just built a 40x60x11 pole barn […]

Sheathing Under Portion of Steel Roof Loyal and very kind reader JOSEPH in LaPORTE writes: “Good afternoon, let me start off by saying that I’m extremely appreciative of your content. The reason for my email is that I’ve been contracted to build several 30x180x9 post frame buildings and my plans are calling for 5/8” OSB […]

Spray Foam Insulation on Interior Surfaces of Metal Panels Information excerpted from MBCI.com When it comes to insulating a building envelope, there are various methods that can be used depending on the building’s purpose and the required level of insulation. However, combining metal roof and wall panels with spray polyurethane foam insulation (SPF) is widely […]

This week the Pole Barn Guru delves into reader concerns over use of a thickened edge with brackets instead of embedded columns in and area of northern Minnesota with heavy snow loads and lots of rain, the issues with wet set brackets set in the wrong orientation, and the prospect of rebuilding over current slab […]

10 Important Things to Consider When Building a Pole Barn By Andi Croft. Andi Croft is a freelance writer whose main interests are topics related to home design, business, technology, and travel. This is brought about by her passion about going around the world, meeting people from all walks of life, and bringing along with […]

What Size Fresh Air Intakes Do I Need? Reader BOB in GRAHAM writes: “I have a 40 x 60 pole building. There is a ridge vent along the 60′. I recently installed Sheetrock on the ceiling and blew in insulation. My question is what size fresh air intake vents do they need to keep the […]

This week Mike the Pole Barn Guru answers reader questions about adding length to endwall post set too deep into ground in order to attach to end trusses, how to best prevent termites after slab and skirt have been poured, and if a UC-4B treatment would suffice on a “half wall” RV storage unit. DEAR […]

What Bubble Insulation Brand do you Recommend? Reader ERICA in WEST COLUMBIA writes: “Is there a specific bubble insulation brand you recommend? We will be using this as our vapor barrier in the roof. I’ve seen posts about this type of insulation disintegrating, so I’m wondering if the claims are exaggerated or if in fact […]