HomeMy WebLinkAboutCorrespondenceDave Argo
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Sam Henning <shenning@knottlab.com>
Friday, January 05, 20L8 12:02 PM
Dave Argo
Scott Smith; Eddy Cotton; Stanley Stoll
RE: Borst Foundation Repair - Permit #BLRE-l-2-l-7-5059
Hi Dave,
We had a chance to review your comments and have come up with a few solutions so BluSky can proceed in a timely
manner. Please see my comments and questions below in red. Please let us know if this "game plan" should suffice and
we can proceed with updating our drawings. Thank you very much and please contact me with any questions.
a. Reference Building Code - Your Engineer's specifications reference the 2009 l.R.C. but Garfield County adopted
the 2015 t.R.C. in July 2016. Can you have your Engineer verify that design plans conform to this more recent
version of the building code, and please copy me w¡th any such correspondence from your Engineer verifying
compliance with 201-5 l.R.C. I apologize for this confusion, we originally had the address within the Town of
Carbondale in our files. I will update the language in the next amended set of drawings and double check for any
new code issues - we do not foresee any changes at this time though.
b. Underfloor Ventilation & Access - We assume that installation of the new steel framing, steel decking and
concrete topping slab will require over-excavation of what is now concrete slab sub-grade and that removal of
this existing earth will effectively form a crawl space below the new garage slab. lf that's indeed the case, this
resulting crawl space will require ventilation or other accommodation of building code requirements allowing
for an unvented crawl space (per l.R.C., Section R408). ln addition, this crawl space will require access per
Section R408.4. Do you have a "game plan" in place for addressing these issues? lf our assumptions are correct
about the crawl space, we can simply condition our approval on inclusion of these items, but I wanted to check
with you first to make sure that we are seeing the whole picture.
We've reviewed the code requirements and calculated the total vent area needed (1 SF with Class 1 vapor
barrier). Due to concerns about saw cutting large holes in the existing stem walls, we believe it's best to core 8"
holes in (3) locations spread throughout the area and install the vapor barrier) which should provide good cross
ventilation and meet the required code.
Also, we have come up change to add an access hatch in the dropped area adjacent to the kitchen door. lt
should exceed the required minimum of L8x24 opening as required by the code.
Thank you,
Sam R. Henning, B.Sc.
Structural Engineer
shen n i no@knottla b.com
Knott Laboratory, LLC
Main: 303-925-1900
Cell: 970-549-7207
Grand Junction, CO
Mv Resume
KnottLab.com
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Dave Argo
From:
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Dave Argo
Friday, January 05, 2018 10:06 AM
'ecotton@ goblusky.com'
Borst Foundation Repair - Permit #BLRE-l-2-17-5059Subject:
Eddy:
I am currently reviewing the proposed concrete slab repairs for Frederick Borst's existing garage located at 300 Sunlight
Drive up in Panorama Ranches.
But before we can finalize our plan review and issue a building permit there are a couple of items that we need to have
clarified:
a. Reference Building Code - Your Engineer's specifications reference the 2009 l.R.C. but Garfield County adopted
the 2015 l.R.C. in July 2016. Can you have your Engineer verify that design plans conform to this more recent
version of the building code, and please copy me with any such correspondence from your Engineer verifying
compliance with 2015 LR.C.
b. Underfloor Ventilation & Access - We assume that installation of the new steel framing, steel decking and
concrete topping slab will require over-excavation of what is now concrete slab sub-grade and that removal of
this existing earth will effectively form a crawl space below the new garage slab. lf that's indeed the case, this
resulting crawl space will require ventilation or other accommodation of building code requirements allowing
for an unvented crawl space (per l.R.C., Section R408). ln addition, this crawl space will require access per
Section R408.4. Do you have a "game plan" in place for addressing these issues? lf our assumptions are correct
about the crawl space, we can simply condition our approval on inclusion of these items, but I wanted to check
with you first to make sure that we are seeing the whole pícture.
Please reply to these issues at your earliest opportunity so that we can finalize our review & issue a building permit for
this project.
Thanks for your attention to this matter -
Dave Argo
Plans Examiner
Gnrficld County
Community Development Department
708 gth Street, Suite 407
Glenwood Springs, CO 81601
Tel: 970-945-8212 Ext. 7670
Ema il : dø rgo @ gø rfield-cou nty.com
Web : go rfield-cou nty, com
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