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Awards | TCA Tilt-Up Achievement

Greenhouse Office Park

2014 TCA Tilt-Up Achievement Award - Office Division

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Greenhouse Office Park was built as a speculative office building at the western edge of Houston's expanding Energy Corridor, so the owner wanted to accelerate speed to market to maximize return on investment. Tilt-up concrete construction allowed for an owner-mandated 10-month construction schedule from start to finish of the building's core and shell.

Greenhouse used a 4 + 1 design (four-story panel plus a one-story panel welded together) to achieve 5 stories. Given the very large panels, the project site was extremely tight. The building was set approximately 40 ft. south of Interstate 10 and just 35 ft. north of a residential sound wall. Because we had to erect all steel and pour all elevated decks prior to removing the braces, the panels were braced to the outside of the building footprint, rather than to the slab-on-grade inside. Hoar had to make two laps around the building erecting panels: one for the four-story panels and a second for the one-story panels. Maneuvering the crane around the braces was a challenge. The majority of the panels weighed more than 200,000 lbs. and were 11&frace34; in. thick.

To maximize tenant space on the first floor, the interior stair was designed to exit below grade. Hoar built an underground tunnel for egress, which required extensive waterproofing. The building is serving a need for high-end commercial office space in the growing suburban community of Katy, Texas. Greenhouse is seeking LEED Silver certification, and the use of tilt-wall construction has benefited the LEED checklist.

Project Specifics

Project Wall Area
33,820 sq ft
(3,142 sq m)
Project Floor Area
210,000 sq ft
(19,509 sq m)
Project Footprint
42,000 sq ft
(3,902 sq m)
Tallest Panel
58 ft 11 in
(17.96 m)
Widest Panel
59 ft 11 in
(18.28 m)
Largest Panel
833 sq ft
(77.4 sq m)
Heaviest Panel
209,000 lbs
(94,801 kg)
Longest Spandrel Panel
12 ft 4 in
(3.76 m)

Participating TCA Members

HD Supply Construction & Industrial White Cap
Tilt-Up accessories
Hoar Construction LLC
General contractor
Keystone Concrete Placement
Tilt-Up contractor
Powers Brown ArchitectureSustaining Member icon
LJB Inc.Sustaining Member icon
Project engineer
Meadow BurkeSustaining Member icon
Bracing and lifting hardware and engineering

About the TCA

Founded in 1986, the Tilt-Up Concrete Association (TCA) strives to improve the quality and acceptance of site-cast Tilt-Up construction, a method in which concrete wall panels are cast on-site and tilted into place. Tilt-Up construction is one of the fastest growing industries in the United States, combining the advantages of reasonable cost with low maintenance, durability, speed of construction and minimal capital investment. At least 10,000 buildings, enclosing more than 650 million square feet, are constructed each year using this construction method.

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