HomeMy WebLinkAbout2013 Overlook Dr - Special Inspections/Engineering - 09/04/20181
9/4/2018
Complete Basement Systems
11795 East 45th Ave.
Denver, CO 80239
RE: Job Number 2017-3852
Site Observation Visit (Forsythe)
2013 Overlook Drive
Fort Collins, CO 80526
DL Engineering Inc. reviewed the progress of construction for the subject project on January 26, 2018.
The following is a summary of the observations made:
New Observations:
Reviewed the steel wall braces. There were 2 wall braces installed on the east wall
spaced at approximately 4'-4” o.c.
o The wall brace spacing was observed and appears to be in conformance with
the construction documents.
o The new steel strapping and joist blocking were observed and appears to be
installed in conformance with the construction documents.
o The wall brace bolt connections were observed and appear to be in
conformance with the construction documents.
o The wall braces appear to be installed in conformance with the structural
mitigation plan.
Reviewed the carbon fiber reinforcement strips. There were 2 strips installed on the
east wall at the stair location. Carbon armor #1 was installed vertical & carbon armor #2
was installed horizontal.
o The carbon fiber strips were epoxied to the basement wall and appear to be
installed in conformance with the structural mitigation plan.
Site grading around the perimeter of the house did not appear to be modified.
Vegetation around the perimeter of the house did not appear to be modified.
Volatile Soils:
The moisture around the foundation elements must be controlled for the useful life of the building.
Time has shown that Colorado soils can be unstable and structures can experience damaging
movements due to expanding and shrinking soils, primarily when moisture changes occur. Maintaining
consistent soil moisture contents around all foundation elements is crucial to minimizing foundation
movements. Even with properly engineered/constructed foundation systems these volatile soils can still
exert excessive pressures causing damage in the residence. If the Owner would like further insight
about the on-site soil conditions and preventative measures, a Geotechnical Engineer should be
consulted.
2
Geotechnical Consideration:
It is possible that the wall braces may consolidate the soil behind the foundation wall. Because of this,
periodic surveys of the supported structures should be conducted to assure project success. The Owner
should be responsible for annual surveys certifying project success. It is recommended that a baseline
survey be conducted immediately. The Owner should report all findings and reports to the Structural
Engineer. If horizontal movement of the foundation walls or wall braces are discovered, the braces
should be re-tensioned. A Geotechnical Engineer should be present for the re-torqueing of the steel
wall braces.
Disclaimer:
In as much as the site review of an existing structure for the purpose of observing the structure
conditions requires that certain assumptions be made regarding existing conditions and because some
of these assumptions may not be verifiable without expending additional sums of money or destroying
otherwise adequate or serviceable portions of the building, the Client agrees that , except for negligence
on the part of the Engineer, the Client will hold harmless, indemnify and defend Engineer from and
against any and all claims arising out of the professional services we have provided.
If you should have any further questions, please feel free to contact me at (720) 440-9450 or
mweber@dlengineer.com.
Sincerely,
Matt Weber, PE
Under the direct supervision of,
Garrett Townsend, PE