The Park at Harbor View
Long Beach, California
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Long Beach is getting a facelift in 2003 with the addition of $120 million
Park at Harbor View project which overlooks historical buildings and landmarks,
including the Queen Mary. The mixed-use development is designed to provide
a transition from a high-rise office building zone on the north end to
a residential low-rise building with ocean view to the south. Located
in one of the fastest growing areas in Southern California with unique
geopolitical importance, this project provides much needed housing in
the urban setting of Long Beach, nestled between Los Angeles and Orange
Counties.
Part of a larger planned development that includes 246 condominium units,
538 apartment units, 25,000 square feet of retail/commercial space, and
a 500-room hotel, the nearly completed first phase consists of apartment
units, retail space, clubhouse, and leasing office in four 4-story and
two 9-story buildings. The clubhouse, located at the corner of Cedar Street
and Walk of the Thousand Lights, creates the image of the town square,
planned to be the visual focal point and center of activity for the community.
The project includes a park and an elevated plaza with public access podium,
2-story parking garage, and heliport.
The foundation system is composed of precast pretensioned driven concrete
piles with cast-in-place reinforced concrete caps and grade/tie beams
with a 5-inch concrete slab on grade. Piles are 14 inches square placed
in groups of two to eight per pile cap and vary in length between 25 and
32 feet. Grade beams are 3 to 4 feet thick and 3 to 6 feet wide. Tie beams
are 2 to 3 feet thick and 1to 2 feet wide.
The floor system in the towers and the parking garage consists
of a 7-inch post-tensioned concrete slab that changes to a 12-inch
posttensioned
concrete slab at the podium over a typical span of about 27 to 30 feet.
Also, the floor system incorporates column capitals and shallow PT beams
at selected locations where unusual loading conditions or long spans occur.
The garage levels and the floors of the towers are supported by reinforced
concrete columns with compressive strengths up to 5000 psi. Typical square
column sizes vary from 12 to 22 inches.
Lateral force resistance for the garage and towers is provided
by a
reinforced concrete shear wall system. Both the garages and the
buildings
above are divided into three independent structures separated by seismic
expansion joints 3 to 4 inches wide. Due to plan and height irregularities,
the shear walls were distributed based on 3-D analysis for each structure.
The thickness of the walls varies between 14 inches at the towers to
18 inches at the garage levels.
 Concrete
structures with post-tensioned decks are proven to provide
a superior structural solution for
mid-rise buildings in Southern
California. Reinforced concrete
structures naturally satisfy durability
concerns, given the highly corrosive environment in coastal areas. Reinforced
concrete structures are also economically competitive, since the natural
resources are widely
available in the region. Seismic design and performance of concrete buildings
with PT slabs are significantly improved as well. Use of PT decks minimizes
slab thicknesses, thus reducing the overall weight of a structure up to
30% compared to ordinarily reinforced structures.
Desirable fire rating is commonly achieved in concrete structures with
virtually no additional costs compared to other construction materials.
Concrete construction provides superior vibration control, which offers
occupants a higher level of comfort. All of these factors made
concrete the material of choice for the Park at Harbor View.
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| Owner/Developer:
Camden Development
Architect:
Ark Architecture
Structural Engineer:
BFL Owen & Associates
General Contractor:
Camden Development
Concrete SubContractor:
Largo Concrete
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