HomeMy WebLinkAboutFinal Engineer Letter~~~~~~~~~~~~~~
April 15, 2016
TO: Mr. Mark Favro
201 Larkspur Drive
Carbondale, CO 81623
mark. fa vro@anbbank.com
Gary R. Reeder, P.E.
Registered Professional Engineer
2937 Four Corners Drive, Grand Junction, CO 81503
cell : 970/250-9242
e-mail: garyreeder34@gmail.com
RE: Underpinning (Piering) Project -Finni Report
201 Larkspur Drive
Carbondale, CO 81623
Although the garage foundation walls were lifted I "-1-1/8" (Drawing A), the low area remained near the
NE corner (Drawing B); the high area in the garage is still at the SE comer. It is normal practice to
measure garage elevations from the ceiling since most garage slabs are sloped toward the front for
drainage . However, when the tops of the concrete stem walls are exposed, it is more accurate to measure
the foundation elevations directly on the stem wall (Drawing C).
The goal was to achieve as much lift as possible at the garage without causing damage to drywall or
causing major adjustment to be made to the garage door. The lift was stopped at acceptable stress levels.
The walkout garage door needs some adjustment as it binds and does not close properly . The overhead
garage door operates properly.
The difference between the respective elevations at the ceiling and at the top of the concrete stem wall
represents the lack of "tightness" in the entire wall structure. As the lift progresses the concrete stem wall
raises until the pressure starts to raise the stem wall and the wood wall together as a unit. The upward
pressure tends to tighten the entire wall structure and then raises as a unit with the ceiling structure.
The floor elevations in the room above the garage generally follow the ceiling elevations of the garage but
of different magnitudes . These floor elevations are shown in Drawing D.
• Residential Structural Inspections
• Foundation Design and Piering
201 Larkspur Drive
page 2
April15,2016
The goal in the basement was to stabilize the foundation wall rather than attempt to lift it. The results here
are shown in Drawing A.
In summary, the foundation walls where piered are stabilized. The push piers were installed in accordance
with the manufacturer's recommendations and specifications. The lift was accomplished in a proper
manner by personnel from Foundation Repair of Western Colorado (FRWC).
Please call me if you have any questions.
Respectfully submitted,
Gary~~~
co #19404
attachment ( 4)
cc: FRWC
Gary R. Reeder, P.E. • 2937 Four Corners Drive • Grand Junction, CO 81503
Gacy R. Reeder, P .E.
Registered Professio11a/ E11git1eer
2937 Four Comers Drive, Grand Junction, CO 81503
cell: 970/250-9242
e·mail: garyreeder34@gmail.com
INVOICE
TO: Mr. Mark Favro
201 Larkspur Drive
Carbondale, CO 81623
mark.favro@anbbank.com
RE: Underpinning (Piering) Project -Final Report
201 Larkspur Drive
Carbondale, CO 81623
TOTAL PROJECT FEE
*This fee includes:
•
•
•
•
•
•
•
•
•
On-Site collection and confirmation of data
Engineering and calculations for piering
Preparation of initial drawings and piering plan
Initial Report
Consultation with FRWC
On-site visit during progress (2)
On-Site lift and elevation survey
Preparation of final drawings
Final Report
$ 1.600*
NOTE: No fee is charged for return on-site visit and elevation survey on April 14, 2016.
04115116
• Residential Structural Inspections
• Foundation Design and Piering
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