This week the Pole Barn Guru answers reader questions about the availability of a tool for installation of vinyl backed insulation, pouring concrete prior to use of brackets and the limitations of “dry set” brackets, as well as setting vapor barrier once rebar hairpins have been installed.
DEAR POLE BARN GURU: Is there a tool out there that I can clip on the end of my vinyl back installation to pull it tight other than my hands. If so what would that tool be called and where can I buy it. I was hoping that there would be some type of alligator vice grips or something like that that we can attach and pull. MARK in OKLAHOMA
DEAR MARK: You are now finding one of many “joys” of using vinyl backed metal building insulation. You will want to read my personal metal building insulation story: https://www.hansenpolebuildings.com/2011/11/metal-building-insulation-in-pole-buildings-part-i/ and https://www.hansenpolebuildings.com/2011/11/metal-building-insulation/
In answer to your question – there is not such a commercially available product.
DEAR POLE BARN GURU: I plan to build a workshop with a concrete floor. a 24×40 x10ft building. Seems like it would be easier to just poor the concrete slab first and then just drill into the concrete and bolt the post brackets in place,,, rather than dig a bunch of holes and pour concrete piers for the post with wet set brackets…what are the advantages of setting all the posts first, then pouring a concrete floor later? Are there any disadvantages to bolting brackets to the concrete rather than using a wet set bracket? Ii am in a high wind area, (120 mph) and seismic area ‘e”. RON in HILO
DEAR RON: Problem #1 is dry set (bolted) brackets are not rated for moment (bending) forces, unlike wet set brackets. This becomes problematic, especially in areas of high wind.
Problem #2 – you can’t just pour a flat slab on grade, you would have to thicken slab edges to probably 18″
With wet set brackets, you can monolithic pour a slab with deeper excavation points at bracket locations, however I typically recommend waiting to pour slabs until after a roof is on to avoid heavy objects from falling and chipping your freshly poured concrete.
DEAR POLE BARN GURU: How do I install the concrete vapor barrier after the rebar hairpins in the columns have been placed?
Thanks! REID in WILLISTON
DEAR REID: Vapor barrier will go under rebar hairpins, so either block up one hairpin end or have someone lift it for you (this will cause other end of hairpin to raise) – slide vapor barrier under hairpin and up around sides of column. Seal vapor barrier to column and you are all good.
o model Building Codes – IRC (International Residential Code) for one and two family dwellings and their accessory structures, and IBC (International Building Code) for all other buildings. Neither code has a requirement for full foundation to support pole (post frame) buildings. I would encourage you to reach out to your local Building Official to ask for further information – it is possible your village or township may have enacted a specific ordinance, to this case, if so – request a written copy of the approved document and please forward it to me for review. In most instances, no such ordinance exists and, if so, this ‘requirement’ cannot be legally enforced.
DEAR POLE BARN GURU: I have a new monoslab with 20″ footer all around. Slab is also reinforced with 1/2″ rebar. I want to build a 40’x46′ pole barn. Walls are 14′, roof trusses are 5/12 pitch. Can I use Simpson brackets and place 6″x6″ posts on top of the concrete every 8′ with 2″x6″ girts? Or should I have builder put posts in the ground around the slab? Thanks-ERIC in REXFORD 
DEAR POLE BARN GURU: Once I save up the funds, I plan to have you guys design me a 28′ x 48′ pole barn with 12′ walls and 6/12 roof. Due to various reasons I will be foregoing metal siding and utilizing wood sheathing and siding for the exterior. I know you measure wall height from the bottom of skirt board, but is it possible to have 12′ walls from top of concrete floor to bottom of truss so as to efficiently utilize sheet goods on the interior walls? Also is 12′ post spacing possible? Thanks TROY in HONEOYE FALLS 
DEAR JOSHUA: Our fully engineered post frame (pole barn) kits include: Mutli-page full size (24″ x 36″) engineer sealed structural plans, specific to your building, on your site, detailing location and connection of every structural member. Includes foundation design. Engineer sealed calculations to verify adequacy of each member and connection. The industry’s best fully illustrated Construction Manual. Unlimited Technical Support from a team who has actually built post frame buildings. All columns, pressure treated splash planks, wall girts, blocking, headers, jambs, roof trusses (and floor trusses where applicable), truss bracing, roof purlins, joist hangers, specialty connectors for trusses to columns, steel roofing and siding (or alternative claddings), steel trims, UV resistant closures for eaves and ridge, powder coated diaphragm screws to attach steel, doors and windows. In a nut shell – everything you need to successfully erect your own beautiful new building other than concrete, rebar and any nails normally driven from a nail gun.
DEAR TOM: While shear walls (and/or bracing) can make your building shell stiffer, they do not eliminate moment (bending) loads having to be transferred through those brackets and bolt connectors. Your best bets are to either build with columns outside perimeter of existing slab, or cut out squares at each column location for either embedded columns (best design solution) or to pour wet-set brackets into piers.
DEAR POLE BARN GURU: I am currently in the process of getting my plans drawn up for a hybrid metal frame home. The plans are drawn up but are not engineered plans. Can I get a cost to have engineered plans drawn up by you if I send you the plans that I currently have. Also, I am located in California, Riverside County to be exact.
DEAR SAM: Think of a hole being drilled through as being an “open knot”. Lumber grading rules refer to these as being “Unsound or Loose Knots and Holes” due to any cause. Most structural framing – like wall girts and roof purlins or posts and timbers are graded as Number 2.
Dry (drill) set column brackets (from any manufacturer) are not designed to resist moment (bending) loads. While they may work just fine, it only takes one good wind event to turn your beautiful new building upside down. Even worse – a smart insurance company will hire someone like me to testify what you used was not a structurally adequate design solution and deny your claim!
DEAR ASHLEY: A post frame home is certainly an excellent design solution for a slope building site. You do have some options (both of these I used on a personal building site of my own) – you can cut to create a ‘daylight’ or ‘walk-out’, or build on stilts.
DEAR DAVID: Even building with a slab on grade is going to require excavation, as you need to have footings either extending below frost line, or thermally isolated to prevent frost heaving. Horizontal girts, by themself, provide little or no resistance to racking. Properly engineered, your steel roofing and board and batten siding can provide adequate shear resistance.
DEAR ALAN: There are plenty of folks out there who would gladly be willing to use dry set brackets to mount pole barn columns to your slab. In most instances, this is a less than adequate design solution as these brackets are not designed to withstand moment (bending) loads. (For extended reading, please visit 
