Rio Grande Regional Hospital
McAllen, Texas
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Studies:Healthcare>Rio Grande Regional Hospital  Rio
Grande Regional Hospital is a multi-phase addition and renovation project
encompassing approximately 136,000 square feet of new space and over 85,000
square feet of renovation space. The hospital addition offers sorely needed
capacity to one of the fastest growing communities in the country. Phase
I project construction, a $38 million building, began in early 2002 and
is slated for completion in the summer of 2004.
This new addition, a 5-story concrete frame with masonry skin with capacity
for one future level, is adjacent to the original 3-story hospital building.
The addition includes administrative and admitting space, 32 ICU rooms,
14 labor and delivery rooms, 9 ante-partum rooms, and 72 patient rooms.
The project has a wing-shaped curving plan and a very aggressive construction
schedule. The 3-hour fire rating requirement, vibration sensitivity
of the operating rooms, and other construction requirements all pointed
to cast-in-place concrete as the most feasible structural material.
The concrete floors were designed with conventional reinforcing using
the wide module joist system, commonly known as a “skip-joist”
system. The flexural capacity of the floor slab is more fully used with
the wide modules than in a conventional one-way joist
system.
 Typical
building bays are approximately 30 feet long and range between 18 to 30
feet in the short direction. The joists typically span the long direction.
Wide metal pans 20 inches deep and 66 inches wide were used to
form the concrete joist-and-beam floor system. Concrete joists
are 6 inches wide, spaced 6 feet center-to-center, and beams are typically
pan-depth and 24 to 36 inches in width. Three-hour fire resistance dictated
a 6-inch-thick slab.
Moment-resisting concrete beam-and-column frames provide lateral strength
for the structure without the need for shear walls. Concrete of 4500 psi
was specified for the building frame, except for the columns at the lowest
level where 6,000 psi was specified to resist higher loads without changing
the column size.
Use of a concrete building structure facilitated the construction schedule
and early occupancy. It also supported the unique architectural
shape and vibration-controlled environment at minimal additional cost
to the owner.
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| Owner:
HCA, Nashville, TN
Architect:
Perkins & Will | CRA Dallas, TX
Structural Engineer:
L.A. Fuess Partners
Dallas, TX
General Contractor:
R.J. Griffin & Company Atlanta, GA
Concrete Contractor:
Spaw Glass
Formwork Contractor:
Ceco Concrete Construction
Concrete Supplier:
Central Ready Mix
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