CREJ

/ BUILDING DIALOGUE / JUNE 2017

Inside & Out(side)

DESIGN WORKSHOP

s an abstraction of Colorado’s Rocky Mountains,

Design Workshop designed the vegetative green

roofs and innovative streetscapes for 1144 Fifteenth

to reflect a transect from a mountain peak to the Front

Range foothills. 1144 Fifteenth, owned by Hines and

Denver’s newest Class A office tower to rise above the

city in more than 30 years and at 603-feet will be the

city’s fourth tallest building. As the southern terminus

of Skyline Park, 1144 Fifteenth replaces a surface parking

lot with a new office and civic destination in the heart

of downtown.

Surrounding the soaring glass facade, the site design

is a metaphor of the Rocky Mountain peaks, alpine

tundra and foothills that are engrained in the culture

of Colorado. The private terraces at level 40 represent

a mountain peak, the extensive green roofs at levels 13

and 14 represent an alpine tundra and the street level

represents portions of the Front Range foothills.

Just as the building reflects the brilliance of its sur-

roundings, the arrival plaza is anchored by an icon-

ic polished black granite “Sky Mirror” that reflects the

soaring high-rise, portions of the Denver skyline and

the ever-changing cloud formations above the city’s

core. The granite pavers and walls create a memorable

setting at the outdoor café with an integrated trapezoi-

dal wooden bench that adds richness to the streetscape

and provides instant curb appeal.

Contributing to the building’s LEED Gold precertifica-

tion, the site design filters the rainwater through Silva

Cell planting technology along the streetscape and ex-

tensive green roof systems on levels 13 and 14. Seasonal

interest and resiliency were major factors for using se-

dums, perennials and grasses on the two rooftop vege-

tated gardens. 1144 Fifteenth’s landscape and site design

will positively contribute to the changing urban fabric

of 15th Street as it traverses through downtown Denver.

1144 Fifteenth Features ‘Sky Mirror' | Design Workshop

PROJECT TEAM

CLIENT/OWNER:

Hines

LANDSCAPE ARCHITECT:

Design Workshop

BUILDING ARCHITECT:

Pickard Chilton (design) and

Kendall Heaton Associates (executive)

GENERAL CONTRACTOR:

Hensel Phelps