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Projects |
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Geotechnical Investigations, Building Settlements and
Monitoring |
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Home Depot,
Farmingdale, NY
This new retail
facility was partially constructed over a landfill area. Soon
after construction, large areas of the floor slab started to
subside. In a period of approximately five years after
construction the concrete slab on grade settled approximately 16
to 18 inches. FKC was retained to investigate the causes and the
rate of settlement, as well as the effects on the superstructure
structural frame. FKC installed settlement plate monitoring wells
(see photograph) in order to determine the rate of settlement.
Soil samples were retrieved and examined. The structural frame
consisting of steel beams and columns and open web joist was
evaluated, taking into consideration the differential settlement
between the columns. FKC designed temporary repair details, and
prepared project specifications. |
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Rite
Aid, Bronx, NY
This 30
year old two story retail facility is part of a
major shopping center. The building columns are
supported on pile foundations, while the original
first floor slab is a five inch concrete slab on
grade. Over the years, the soil underneath the slab
on grade had subsided and the floor slab deflected
gradually. FKC was retained to evaluate the floor
slab settlement. Impact-Echo testing of the slab
revealed variable slab thickness. Measurements of
the slab thickness at the middle of a bay indicated
thickness in excess of 15 inches. Our analysis and
soil condition evaluation indicated that the floor
slabs would continue to settle. FKC recommended the
removal and replacement of the existing slab on
grade with a new framed concrete slab supported on
new drilled mini pile foundation. FKC prepared
drawings and specifications for the repairs. FKC
provided construction administration services.
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