HomeMy WebLinkAboutEngineering Report 02.16.2024CARYATIII Structunl Engineering (Structunl fngineerJ
P.0. Box 1214
Carbondale, C0 81623
970.239.1187
TIEI.D OBSERVATIO]I REPORI
Project: Low Remodel
Date of Observation : 2/L6/24
By: Elizabeth Lozner
On-Site Personnel: Donna Riley, Bruce Hasselbring, Jesse Low
Distribution Date: 2/ t6 / 24
Additional information to follow (yes/no): No
Unless indicated otherwise, the purpose of the site visit is to view current progress ond to address ony
questions, concerns and comments of the Generol Contracton llnless notified in writing within 7 doys of
the "Distribution Dote" it shall be assumed that the recipients are in agreement with the contents of this
memo. Any discreponcies with the following informotion and ony ottochments should be brought to the
attention of the sender. This record is not verbotim, but clarifies architectural, structural and other
comments and will be used to inform involved parties thot noted decisions will proceed as indicated by
this document and ony attochments.
Comments:
At the contractor's request, Caryatid Structural Engineering ('CSE") visited the site to review the
presence of large boulders and/or bedrock at the proposed addition foundations.
At the east addition, no boulderVbedrock will prevent the construction of the typical foundation wall.
At the west addition, the existing house foundation is stepped over a large portion of bedrock. As
advised by CSE, the contractor has removed all bedrock to frost-depth up to 3'-0" within the existing
foundation. Additional removal closer to the house is not advised so as to prevent damage to the
existing structure. ln this location, as shown in the photo beloW there is a roughly 3'-0" length of
bedrock adjacent to the existing foundation. At this location, it is acceptable for the contractor to pour
an 8" wide grade beam from the existing foundation to the point beyond bedrock, at which point a
footing shall be added to the foundation wall. The grade beam shall have (2)#5x5'-0" long longitudinal
bars top and bottom which are doweled into the existing wall per plan.
At all locations where new footings bear directly on bedrock, it is acceptable for these footings to be
above frost depth as long as they bear completely on the bedrock.
Photo: Bedrock at Grid 1 and Grid B intersection, oriented to plan below.
t{"4'
GRAf}E BHM {}HLY
r0R 3'-fi"
BfBn0sH *--.s
Figure: Location of Bedrock and Revisions to Foundation