HomeMy WebLinkAboutFile Documents.845 Meadows Rd.0021-2024-BROF (6)
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KL&A, Inc.
215 N. 12th Street, Unit E
Carbondale, Colorado 81623
Telephone: (970) 927-5174
April 8, 2024
James Hooper
Aspen Meadows Resort
845 Meadows Road
Aspen, CO 81611
Re: Aspen Meadows Guest Rooms Roof Evaluation
Dear Jim,
Per our discussions last week, my understanding is that you are in the process of replacing the roofing of the 100
and 200 guest buildings at the Aspen Meadows Resort. As you described to me, local code requires that when
the roofing of a building is being replaced, the insulation must be increased to provide an R-value of 40 above
the roof deck or R-60 with a combination of insulation above and below the roof deck, as long as the addition of
the insulation is structurally viable. The increase in R-value potentially could result in the roof needing to
support more snow than it has in the past. The purpose of this letter is to address whether or not the existing
roof structure is capable of supporting the proposed roof assembly and the current code required snow load.
Per the photos you provided and my observations on site on April 5, the existing roof structure is ¾” OSB roof
sheathing on tapered wood I-joists which are supported by LVL headers. The wood I-joists are tapered in depth
from approximately 21” at the high end and 16” at the low end. The joist flanges are roughly 2.5 inches wide by
1.5 inches thick. The maximum span of the I-joists is approximately 19 feet. The header above the exterior
glazing is a double 18” LVL with a span of approximately 15 feet. The interior headers are double 11 7/8” LVL
with a span of approximately 10 feet.
Originally, the roof of these buildings had between 10 pounds per square foot of gravel ballast on the roof. This
ballast was removed and is not being replaced. For our analysis, to achieve an R-value of 40 above the roof
deck, we are assuming this would be achieved with the addition of 6 inches of rigid insulation with a ½” layer of
plywood above it. It is our understanding that an adhered roof membrane will be place on top of the new
insulation assembly.
Based on our understanding of the existing framing and the proposed roof assembly, the existing framing is
capable of supporting the proposed assembly and the current roof snow load (70 psf flat roof). If any deviations
from the existing framing, as described above, are discovered or if any defects in the structure are found in the
reroofing process, please contact us for review of the condition.
Sincerely,
Brett McElvain, P.E.
04/08/2024
04/18/2024