HomeMy WebLinkAboutEngineer's Letter 08.21.2019ASCENTS
STRUCTURAL ENGINEERING
August 21, 2019
Connor and Katie Bailey
c/o 2757 Design
417 Main Street, Suite Y
Carbondale, CO 81623
Reference: Blue Creek Remodel
124 Ponderosa Pass
Carbondale, CO 81623
Project No. 2019-0238
Dear Mr. and Mrs. Bailey,
Boulder
Carbondale
Winter Park
On August 8, 2019, I visited your home, located at 124 Ponderosa Pass, with Shay Myers, Designer for 2757
design. The purpose of the visit was to investigate the existing attic trusses and upper level framing over your
garage as it relates to the desire to remodel this space. During this visit we field measured the existing framing,
noted information regarding the pre -fabricated trusses and gathered information regarding the as -built condition.
The structural changes and framing requirements related to the change of use of this space are based upon the
plans provide by 2757 design dated 08.09.19. Additionally, I have reviewed the original structural plans prepared
by Ernest Kollar Engineers, Inc. dated 01-23-06. It is my understanding that these plans accurately represent the
as -built condition of the existing structure.
The structural framing requirements associated with the proposed remodel include:
■ Attic Trusses — These trusses were fabricated by Trusfab, Inc. in New Castle Colorado (Job No. 3994).
When contacted, they were able to provide the original truss shop drawings and run a new analysis for the
trusses for the as -built condition and change of use in this space (Bedroom - 30 psf Live Load to the room
area). Based upon this information it was found that in the exiting condition the trusses adequately
support the design loads. No modifications are needed. Additionally, none of the trusses shall be altered
from their existing condition.
New Door Opening between the Main House and Attic Space over Garage
door 004 — 3'-0" wide
Header — (2)-2x8 or (3)-2x6
Trim Studs — (1)-2x6 each End
King Studs — (1)-2x6 each End
■ Increase Window Opening on West Attic Dormer (See sheet a3.2)
window a — 2'-6" wide
Header — (2)-2x8 or (3)-2x6
Trim Studs — (1)-2x6 each End
King Studs — (1)-2x6 each End
(See sheet a3.2)
ASCENT GROUP, INC. • 417 Main Street, Suite Z • Carbondale, CO 81623 • 970.618.5024 • ascentgrp.com
Blue Creek Remodel
2019-0238
• Increase Window Opening on North Attic Dormer (See sheet a3.2)
windows b and c — 2'-6" wide each (approx. 5'-6" wide total)
Header — (2)-2x10 or (3)-2x8
Trim Studs — (2)-2x6 each End
King Studs — (2)-2x6 each End
• Infill Frame the Existing Floor Penetration for Fold -down Attic Stair — Remove attic stair and provide 2x8
joists at 16" o.c. spanning between the existing girder trusses. Fasten each end to girder truss using
Simpson LUS26 or LUS28 face mount hangers. Provide 3/4" thick floor sheathing.
• Verify that existing floor sheathing in attic space is 3/4" thick and rated to span 24".
Because of the nature of a remodeling project, contractor shall contact our office if any unforeseen framing
conditions or as -built conditions are encountered during the construction process. All construction shall be
completed in a workman like manner and be in compliance with current building code requirements per the
Garfield County Building Department.
Please feel free to contact our office if you have any questions or if I can be of any further assistance regarding this
matter.
Sincerely,
Christopher R. Drake, P.E.
Project Manager
ASCENT GROUP, INC. ■ 417 Main Street, Suite Z ■ Carbondale, CO 81623 ■ 970.618.5024 ■ ascentgrp.com