HomeMy WebLinkAbout2020-12-07 Best Western Hotel Restoration - Construction Observation Report 2CONSTRUCTION OBSERVATION REPORT 2
Best Western Hotel – Balcony Restoration
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Project: Best Western Hotel –
Balcony Restoration
KH Project # 143255000
Location: 7900 S. US Highway 1,
Port St. Lucie, FL 34952
Observed By: Noel Ramirez, P.E.
Kimley -Horn
Date of Observation: 12/07/2020 305-535-7705
Time of Observation: 1:00 p m noel.ramirez@kimley -horn.com
Date of Report: 12/17/2020
Temperature /
Weather:
85o, Sunny
Present on Site: Noel Ramirez
Grant DeLa Vasselais
Jean-Simon Berube
Kimley -Horn & Associates (KH)
Structural
Structural
Activities Observed:
1. Structural and Waterproofing Repairs
Kimley -Horn conducted a site visit on December 7, 2020 to observe structural and waterproofing
repairs on the Best Western Hotel – Balcony Restoration project. Upon arriving on site, progress work
was observed on the NE and NW building blocks. The following observations were noted:
a. Shoring was installed in all areas where repair work was taking place following the approved
shoring shop drawings and recommendations from Kimley -Horn on the previous visit .
(Reference Photos 1-2)
b. Progress was observed on spall areas where delaminated concrete had been removed and
concrete edges sawcut at 90 degrees. Concrete removal and surface preparation were
observed to be in accordance with the restoration plans and technical specification in most
locations keeping concrete removal configurations with rectangular shapes and square
corners . Concrete removal was ex tended along the reinforcing steel until there was not further
delamination, cracking or significant corrosion. Where half or more of the perimeter of
reinforcing bar was exposed, bond between the reinforcing bar and surrounding concrete was
broken, or the reinforcing bar was corroded, concrete was removed from the entire perimeter
of the bar to provide at least 0.75 in. clearance between exposed reinforcing steel and
surrounding concrete. Locations with lack of concrete removal around reinforcement were
id entified by Kimley -Horn and marked by the contractor in the field. Kimley-Horn will check
these areas on the next site visit to verify compliance with the drawings . (Reference Photos 3-
5)
c. Kimley -Horn observed reinforcement with significant corrosion and loss of cross-sectional area
in several locations. Areas were identified by Kimley -Horn and marked by the contractor in the
field . Contractor shall notify Kimley -Horn where significant amount of material has been lost
due to corrosion. Where section loss of reinforcing bars is more than 20% of the cross -
sectional area, splice replacement bars to existing bars as directed by Kimley -Horn. Remove
additional concrete as necessary to provide at least a 0.75 in clearance beyond existing and
replacement or supplemental bars. Kimley-Horn will check these areas on the next site visit to
verify bars were properly spliced. (Reference Photos 6-7)
d. Reinforcement shall be cleaned and reviewed by Kimley -Horn before applying bonding agents
and patching material. Kimley-Horn requested the contractor to p rovide support chairs, and
holding bars properly spaced and with sufficient strength to carry loads of reinforcement and
deposited concrete without collapsing or allowing bars to sag. (Reference Photo 8)
e. All corroded or damaged electrical conduits shall be repaired/replaced before ap plying the
patching material.
f. Structural identified an overhead area with concrete honeycombing at the west balcony slab of
the NW block. Also, it was noticed that partial-depth repairs are being performed on the
CONSTRUCTION OBSERVATION REPORT 2
Best Western Hotel – Balcony Restoration
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surface above. By the time all layers of concrete honeycombing are removed until suitable
concrete is exposed, the thin concrete layer above would potentially break or crack. Therefore,
Kimley -Horn recommended a full-depth type of repair along the honeycombing area.
(Reference Photos 9-10)
Photographs
Photo 1 – Shoring Photo 2 – Shoring
Photo 3 – Spall Area Photo 4 – Lack of Cl earance Around Reinforcement
Photo 5 – Lack of Clearance Around Reinforcement Photo 6 – Reinforcement Section Loss
CONSTRUCTION OBSERVATION REPORT 2
Best Western Hotel – Balcony Restoration
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Photo 7 – Reinforcement Section Loss Photo 8 – Lack of Chairs
Photo 9 – Concrete Honeycombing Photo 10 – Concrete Honeycombing