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Awards | TCA Tilt-Up Achievement

Konterra AJBP 7

0 TCA Tilt-Up Achievement Award - Office Division

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Building 7, in the Annapolis Business Park near Ft. Meade, Maryland, is a follow-up building from the award-winning Building 6 in the same development. While Building 6 was the first in the world to meet the Department of Defense Medium Level Criteria for Blast Resistance, Building 7 is the first to meet this same level of protection for both Blast Resistance and Progressive Collapse. This criterion is distinctively different and more stringent than GSA levels of protection, although they are often confused.

The innovation in Building 7 includes the use of 30-ft.-wide panels at four stories tall on 14 ft. 6 in. floor-to-floor heights, to meet the "lost leg" analysis required; ribbon window appearance; curtain wall entries; a high glass-to-wall ratio approaching 50%; and nominal panels of 13 in. thick increased to 16½ in. for the ribbon window aesthetic panels.

The cost to build this protected building was only marginally greater than the cost to build a similar building that was not protected. This allowed for the first time a speculative project to come on the market without a known government lease, with the backup plan being it could be leased for market competitive rates to non-government users. The building has been accepted by the government with a site adapt prototype now underway for a second. Building 7 was recently recognized by The Structural Engineers Association of Metropolitan Washington with a Merit Award for Specialized Structural Elements.

Project Specifics

Project Wall Area
50,030 sq ft
(4,648 sq m)
Project Floor Area
126,400 sq ft
(11,743 sq m)
Project Footprint
32,400 sq ft
(3,010 sq m)
Tallest Panel
68 ft 6 in
(20.88 m)
Widest Panel
29 ft 11 in
(9.12 m)
Largest Panel
1,324 sq ft
(123.0 sq m)
Heaviest Panel
226,000 lbs
(102,512 kg)

Participating TCA Members

HD Supply Construction & Industrial White Cap
Tilt-Up accessories
Southland Concrete CorporationSustaining Member icon
Tilt-Up contractor
Powers Brown ArchitectureSustaining Member icon
Architect
Cardno Haynes Whaley, Inc.
Structural 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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