Tag Archives: geotechnical study

HOA Restrictions, Plans Only Option (sorry, no) and Site Prep

This week the Pole Barn Guru addresses reader questions about the possibility of adding a brick exterior to a pole building to satisfy HOA restrictions, if Hansen provides a sealed plans only option so a reader can reuse parts of current building, and geotechnical concerns about site prep and dirt for post frame construction.

DEAR POLE BARN GURU: I live in a HOA restricted area that states exteriors must be brick or brick veneer. I purchased the neighboring lot in order to build a 3/4 bay shop on that lot. Is there a way to brick veneer the exterior of one of your buildings? It has to closely match my existing house. Can email you more pictures if that would be helpful. CHAD in JEFFERSONVILLE

DEAR CHAD: HOAs are always a challenge (https://www.hansenpolebuildings.com/2016/12/hoa-requirements/). There are a plethora of ‘thin brick’ options available (please Google “Thin Brick”) any of them can be readily applied to a properly engineered post frame building. I say ‘properly engineered’ as building and wall deflection needs to be limited in order to prevent cracking of veneer.

 

DEAR POLE BARN GURU: Can I hire you to design a pole barn and get sealed prints for NJ without buying the kit from you? I have a fairly new pole barn on the property and would like to reuse that material for my new barn. SHANE in BRIDGETON

DEAR SHANE: As some of our components are proprietary, our engineers will only seal plans when we are providing materials.

 

DEAR POLE BARN GURU: The person that will be doing the dirt work for the foundation asked me a question concerning the columns in the ground. He asked if the column will require certain type or quality of dirt, or if there are any samples taken to determine the depth. I have read on your website about all the factors that are taken into consideration when determining the depth of the hole and size of the columns, but I don’t remember seeing anything about soil samples. Thank you in advance for your time. ALLEN in CABOT

DEAR ALLEN: In an ideal dream world, our clients would have a geotechnical engineer do an onsite evaluation of soil strengths and forward to us.

Without this information, our engineers use presumptive load-bearing values found in IRC (International Residential Code) Table R401.4.1 and IBC (International Building Code) Table 1806.2. From decades of experience, these values end up being very conservative in relationship to actual geotechnical testing results.

Most important, if you are bringing in fill, is for it to be adequately compacted in no greater than six inch lifts.

One of our previous clients had some site preparation questions answered for his particular circumstances, his experience may prove helpful to you: https://www.hansenpolebuildings.com/2017/02/building-site-preparation/

My Response: Why We Need Building Codes

My Response: Why We Need Building Codes

As promised, here is my response to the Coeur d’Alene Press article of December 5, 2017 (exactly as I wrote in the comments portion following the newspaper article regarding adoption of building codes):

I will first qualify myself – I attended the University of Idaho in architecture. I was a manager or owner in the prefabricated wood truss business for over 20 years. I’ve been a registered general contractor in four states, In 1987 I joined ICBO (they write the Codes) as well as ASAE (American Society of Agricultural Engineers) and was a sitting member on the committees which established the huge majority of the structural design criteria for post frame (pole) buildings. I have had the privilege of being involved in the structural design of nearly 20,000 buildings in every U.S. state. I am a contributing writer for Rural Builder magazine.

In my humble opinion – anyone who wants to “run bare” without Building Code minimum standards being applied to their new structures is out of their freaking mind.

The Building Codes are designed specifically to protect the safety and lives of those who occupy (or are in the vicinity of) structures. The Code requirements are ‘minimum’ standards, which are just scraping by – however something is better than nothing. For residential occupancies, the risk (under Code) is a once in every 50 year probability of the design loads for a given home to be exceeded! And yet there are some who would do away with even this minimal amount of protection.

I am not at all an advocate of governmental intervention, however only a fool acts as their own engineer. I deal, on a daily basis, with challenges posed from new building owners who have had under designed buildings constructed in jurisdictions which do not require structural plan reviews.

Mr. Tyler’s concern about homes having been built on unstable ground is not the fault of the Code, but the fault of the agencies which issued the permits. A geotechnical study should be done for the proposed site of any new structure – this allows the RDP (Registered Design Professional – architect or engineer) who designs the structure to have adequate information to be able to properly address foundation challenges, before they become foundation issues. The Code does not mandate engineered soils reports.

As to length of warranty provided by builders – an educated new building owner will look for a builder who offers an extended warranty. This, again, is not a function of the Code.

Having accurate information about snow loads is crucial to proper structural design. The 2015 edition of Ground Snow Loads for Idaho was produced by the Department of Civil Engineering at the University of Idaho. Based upon 31 more years of snowfall study than the previously used document – it appears Ground Snow Loads in Kootenai County should range from 43 to 100 psf (pounds per square foot) depending upon one’s location within the county.

Several factors go into calculation of Ps (sloped roof snow load) from Pg (ground snow load) including exposure to wind, is structure heated or not, importance of building, slope of roof and roofing material. In many instances the calculated Ps load is going to be higher than the currently accepted 40 psf. Will this add to construction costs? Yes. Will it help prevent failures and possible loss of life? Yes.

What is the value of even a single life?

Rather than throwing the baby out with the bath water, my advice is to require every single building to be designed per current Code to include plans which are sealed by a Registered Design Professional.