|
Tierra has served
as a geotechnical engineering consultant to a large variety of public
and private clients, including architects, engineers, contractors,
developers, utilities, institutions, schools, military, municipalities,
and private enterprise covering commercial and residential entities. Our
collective project experience is broad based, covering airport construction,
pavement design of municipal airports, buildings, highways, bridges,
communication towers, dams and levees, sinkhole remediation, ground
improvement projects, water supply projects, landfills, slope stability
analyses and distressed structure/foundation studies.
Polk County Expressway, Segment 5,
Polk
County, Florida
Tierra performed Construction Engineering Inspection (CEI) services
for this $58.6 million dollar construction project, which includes
the four mile construction of a 6-lane divided limited access highway
east and west of US 98, including an interchange at US 98. Tierra
provided experienced and certified inspectors to perform inspection services for bridge construction,
roadways, signalization, site drainage and asphalt paving.
|
|
|
Fantasy Harbour Roadway and Bridge Construction, Myrtle Beach, South Carolina
Tierra NC provided geotechnical engineering services during the design and construction of an approximately $40 million, 1.7 mile roadway and intercoastal bridge construction project. Due to soft coastal plain soils and seismic/liquefaction considerations, the project required several specialized geotechnical construction techniques including: installation of stone columns, wick drains, geogrid and surcharging. In addition, specialized instrumentation and load testing procedures such as settlement sensors, settlement plates, pneumatic piezometers, slope inclinometers and statnamic load testing were utilized on the project to evaluate construction procedures.
Tri-Rail Double Track Corridor Improvements Program,
Segment 5 Project, Palm Beach, Broward, and Miami-Dade Counties
Tierra performed preliminary subsurface exploration for a 71.7
mile transportation system along the South Florida Rail Corridor
(SFRC). This
system will provide mass-transit rail services through Palm Beach,
Broward, and Miami-Dade counties. Our services consisted
of performing an extensive data review of previous Geotechnical data
provided by FDOT and performing additional subsurface exploration as
required.
I-275 Sound Barrier Wall, Hillsborough County, Florida
Tierra provided Construction Engineering Inspection (CEI) support services for the installation of sound barrier walls along I-275 from Busch Boulevard to just north of Bearss Avenue. The project involved the installation of approximately 358,000 square feet of sound barrier walls totaling approximately 4.1 miles. Tierra provided inspection support services for auger cast piles and placement of the sound walls.
Pharmacy Complex, Campbell University, Buies Creek, North Carolina
Tierra provided geotechnical engineering and construction materials testing during the design of this $10 million dollar new pharmacy building. The entire complex is over 60,000 square feet. The structure is four (4) stories with a basement and light duty parking area. Tierra provided engineering recommendations for site preparation, general construction and foundation design recommendations. Soil parameters were provided for earth passive pressures and seismic design considerations. A permanent dewatering system was designed for the construction of the basement area. A pumping and recovering test was performed by Tierra to assist in the design of the dewatering system.
Jupiter Yacht Club, Jupiter, Florida
Tierra
provided specialty geotechnical engineering services for luxury town
homes and parking garage. The project consisted of two ten-story structures
and a nine story-parking garage. Due to heavier structural
loads, the proposed buildings were supported on shallow foundation
after ground improvement using Vibroflotation. The footings were
designed for 6,000 psf bearing capacity. The foundation system
used was the most economical and effective given the local soil conditions.
Detailed geotechnical and pavement recommendations
were provided to meet local building codes. An additional study was carried out
to determine the seasonal high groundwater table and storm recovery
rate. The recommendations included removal and replacement of
deleterious materials with compacted structural fill and recommendations
for stormwater recovery rates.
The Waverly, Miami, Florida
Tierra provided
geotechnical engineering services for a 20-story apartment structure
with a three level parking garage. This building was
supported on deep foundations, auger cast pile. Due to close
proximity to other structures, pile driving was not an option. Detailed
geotechnical and pavement designs were provided to meet local building
codes. This project was located within coastal
construction, limiting the type of foundation that could be used for
the structure.
Walters Property, Tampa, Florida
Tierra performed a geotechnical study to obtain information on the general subsurface conditions
at the site of the previous Walter Industries located at the Dale Mabry
Highway and I-275 intersection. The
project consists of developing a new central business center to replace
the existing eight-story office towers. Tierra recommended vibroflotation/vibro
replacement. In addition, Tierra addressed driven piles, settlement
potential, construction considerations, engineering fill and backfill,
groundwater control, foundation construction, floor slab, and excavations.
Triangle Transit Authority Regional Rail Project, Phase I, Wake & Durham Counties, North Carolina
Tierra was the sole geotechnical consultant during the design of this $750+ million dollar project. The project consisted of designing a regional rail system supported by shuttle and local bus service. The phase I operating segment of the project consisted of 28 miles of track line, over 30 bridge structures and approximately 85 retaining walls. A “U” tunnel section was designed for the downtown Raleigh Station Area. The tunnel excavation is 45 feet deep and approximately 3,000 feet in length. Tierra performed over 1,000 soil test borings and prepared over 75 geotechnical engineering reports, including additional reports for the 13 rail stations.
One and 101 Clematis, West Palm Beach, Florida
Tierra
provided geotechnical engineering services for a five story office/retail
building and a five-story parking garage. Both
buildings were supported on improved natural soil utilizing shallow
foundations. Vibration monitoring was conducted on adjacent structures
to minimize possible damage during the ground modifications. Detailed
foundation recommendations were provided to meet local building code. The
foundation system provided a cost saving of about $500,000 to the owner.
Home Depot Stores, Largo and Tampa, Florida
Tierra provided inspection and testing services for
Home Depot stores in Largo and Tampa, each consisting of 100,000 square
feet of construction. The $20 million dollar structures consist
of flat, concrete slab on grade, tilt wall panels and structural steel
roof framing. Tierra provided full time inspection of earthwork,
concrete, utility construction, site work, reinforcing steel structural
steel, and site pavements including all soils laboratory testing.
|
