HomeMy WebLinkAboutFile Documents.520 E Hyman Ave.0051.2018.ACBK
Page 1 of 2
KL&A, Inc.
215 N. 12th Street, Unit E
Carbondale, Colorado 81623
Telephone: (970) 927-5174
April 24, 2018
Karla Henrichon
Permit Coordinator
City of Aspen Community Development
201 N. Mill St., Suite 101
Aspen, CO 81611
Re: 520 E Hyman Re-roofing & Structural Repair Permit
Dear Ms. Henrichon,
This letter addresses the re-roofing and structural repair for the 520 E Hyman project located at
520 Hyman Avenue, Aspen, CO 81611. The original project was built in the late 1980’s with
structural drawings prepared by Lawrence A Doble. In the 1990’s there was a limited structural
remodel with structural drawings prepared by Maggert & Associates, Inc. The existing roof of
this project is 7 ½” concrete composite deck comprised of 4 ½” of concrete over W3 20ga
formlock deck. As part of that remodel, a 2” concrete roof deck was added on the eastern half
of the roof including a hot tub and the original roof was removed in the south west corner of the
property and a wood framed gable was added. In addition, the roof framing was modified south
of the elevator to accommodate the removal of a column at that location.
Limited interior demolition has incurred which allows some, but not complete, observation of the
existing roof structure. In some cases, the deck can be observed and appears to have buckled
during the original construction. Several duct openings have been added through the W12
beams along the west edge of the building and in the south east corner. These openings do not
appear to meet current code for openings in steel beams. In addition, there are several other
connections, such as at the elevator, that appear to need to require strengthening. It is clear
that in these areas, the structure is not behaving as intended in the original structural design.
The intention is to remove & replace entire roof with the exception of the elevator roof, wood
framed gable roof and the existing roof immediately supporting the wood framed gable roof.
The roof shall be removed with care not to damage the existing structure supporting the roof.
The eastern half of the roof (grids 1 to 3) shall be framed w/ 3N 16 gauge metal deck, 3-span
continuous attached with 5/8” diameter puddle welds at supports & welded side-laps in a 36/4
pattern. Intermediate W8x18’s have been added to reduce the deck span. The western half of
the roof (grids 3 to 5) shall be framed w/ 4” composite deck (2” concrete on 2VLI 16 gauge metal
deck) 3-span continuous attached with 5/8” diameter puddle welds at supports & welded side-
laps in a 36/4 pattern. Intermediate W8x18’s have been added in limited locations to reduce the
deck span. New skylights will be framed with W8x15 beams. The finishes, insulation and
waterproofing will be installed per the architectural drawings/letter.
10/21/2018
Page 2 of 2
There are a few areas that will require field verification prior to coordinating & issuing repairs.
Our intent is for the Contractor and/or KL&A verify to the existing condition and then provide the
Architect & Contractor with an appropriate detail or fix, if required. Please feel free to contact us
with any questions and/or comments. Thanks.
Sincerely,
Rebecca Faverty, PE
Project Manager
04/23/2018
10/21/2018