HomeMy WebLinkAboutFile Documents.950 Cemetery Ln.0072.2018 (34).ARBKTo: PJ Murray, City of Aspen Building Department
From: Chris Beebe, Kim Raymond Architects
Re: 950 Cemetery Lane Building Permit Resubmittal – Drainage Narrative
Date: January 23, 2019
Hello PJ –
The above-referenced property currently drains from south to north approximately 4’ over 167’
feet on the fall line. The proposed project does not include significant changes to the lot
grading, only the addition of three window wells, indicated on the Lower Level Floor Plan on A
1.3 and the Site Plan on Z-004.
The existing roof of Unit 1 portion of the duplex drains to grade in four locations:
- Gutter and downspout near the Entry to Unit 2 on the west (Street) side of the building
- Free-draining roof edge on the east side of Unit 2
- Free-draining roof edge over the Master Bath and Kitchen on the East side of Unit 1
- Free-draining roof edge on the north side of Unit 1’s Garage
The proposed project would make one change to roof drainage on Unit 1: Because of the
change in pitch direction for a small portion of roof over Unit 1’s Master Bath, we propose to
collect some of the storm water (that previously free-drained) into a scupper and downspout,
draining to grade in the same area as the previous free-draining water. This point of discharge is
approximately 60’ form the property line (on the fall line), with an 18” loss of elevation. Please
refer to revised Roof Plan on A 1.5 for roof drainage patterns, and the East Elevation on A 3.3
for scupper and downspout design.
The project will disturb approximately 184 sf of the site, and add approximately 239 sf of
impervious surface, in the form of roof extensions. No hardscaping is being added.
Reviewed by Engineering
01/25/2019 3:08:09 PM
"It should be known that this review shall not
relieve the applicant of their responsibility to
comply with the requirements of the City of
Aspen. The review and approval by the City is
offered only to assist the applicant's
understanding of the applicable Engineering
requirements." The issuance of a permit based
on construction documents and other data shall
not prevent the City of Aspen from requiring the
correction of errors in the construction
documents and other data.