The document describes the tensile structure roof at Denver International Airport. Some key details: - The roof covers 375,000 square feet and is supported by 34 steel masts up to 45 meters high. - It uses a catenary cable system similar to the Brooklyn Bridge, with over 10 miles of steel cable and 3.8 miles of aluminum clamping. - The roof material is a double layer of PTFE fiberglass that is translucent, letting in natural light while reflecting solar heat gain.

1. TENSILE STRUCTURE
Denver International Airport
SHREYANK GUJADIYA (058)
PRANAV SUTARIYA (056)
VIVEK BORAD (068)
HARSH CHODVADIYA (16-036)
RAVI YADAV (070)
SCS-I
SEM-VI

2. ❖ INTRODUCTION:
• Location: Denver, Colorado
• Project Size: 375,000 sq.ft.
• Architect: C. W. Fentress J. H. Bradburn Associates, Denver, CO
• Owner: City/County of Denver, CO
• Engineer: Severud Associates/Horst Berger, New York, NY
• General Contractor: PCL/Harbert (JV)
• Completion Date: 1994
• When it opened on February 28, 1995, Denver's $4.5 billion
international airport was the first major airport built in the
United States since Dallas/Fort Worth was constructed in 1974.
• DIA maintained its ranking as the fifth busiest airport in North
America and the tenth busiest in the world.
❖ CONCEPT:
• International Airport Denver, DIA, is
characterized and distinguished by the fiberglass
roof in white, aesthetically designed as
reminiscent of the snowy peaks of the nearby
Rocky Mountains.
• His aesthetic also recalls the ancient “tents or
shops” cloth indigenous tribes inhabiting the
result of the clear intention of linking two
diametrically opposed cultures.

3. ❖ SITE PLAN:
• The initial buildout phase of Denver International Airport – or DIA, as referred to locally – consisted of six runways, one
passenger terminal, three concourses hosting 138 gates and 40 commuter positions, 12,000 parking spaces, and an office
building.
• This expansive airport is situated on about 34,000 acres, an area greater than any other airport site in the world.

4. ❖ THE JEPPESEN TERMINAL PLAN:

5. ❖ THE JEPPESEN TERMINAL LEVEL PLAN:

6. ❖ THE JEPPESEN TERMINAL:
• The Jeppesen Terminal's internationally
recognized peaked roof, designed by Fentress
Bradburn Architects, is reflective of snow-
capped mountains and evokes the early history
of Colorado when Native American teepees
were located across the Great Plains.
• The catenary steel cable system, similar to the
Brooklyn Bridge design, supports the fabric roof.
• DIA is also known for a pedestrian bridge
connecting the terminal to Concourse A that
allows travelers to view planes taxiing beneath
them and has views of the Rocky Mountains to
the West and the high plains to the East.
• The airport has one main terminal, the Jeppesen Terminal,
whose main architectural feature is the roof fabric taut and
whose area covers 140,000 square meters. Called Terminal
Jappesen Elrey Jppesen honoring pioneer in aviation safety.
• The terminal is divided into east and west terminal by
terminal arrivals or departures are both connected to three
halls, A, B and C with 138 gates.
• These lobbies are reached by a passenger bridge or using a
subway system. All these terminals have been expanded
over the years and between the plans included the
construction of a station for the FasTracks commuter line.

7. ❖ STRUCTURAL SYSTEM:
• 34 steel masts, ten miles of structural steel cable, 3.8 miles of aluminum clamping, and 660,000 square feet of PTFE
fiberglass architectural membrane.
• The masts are topped by molded fiberglass reinforced plastic caps in two sizes: 6' x 8' and 12' x 28’.
• Each of these conical canopies is about 40 feet in width and 900 feet in length and various in heights.
• Max. height is 45mt. And min. height is 40mt.

8. • The Terminal's entire roof structure including structural steel masts, cables, and double layer fabric roof – was
constructed in about nine months using an average installation crew size of 50 men. Additionally, at the Level 4 East
and West Arrivals, tensile membrane canopies provide curb side weather protection for passengers being dropped
off.
❖ STRUCTURAL ELEMENTS:

9. ❖ JOINERIES:
• The oval-shaped mast-top truss
rings were delivered in two
pieces, set around the mast
bases, and welded together.
• Hoist cables were attached to
each end of the bay's ridge
cable, which were lifted towards
the rings.
• As the ridge cable was lifted, the
fabric cable bay with it.

10. ❖ CONSTRUCTION SYSTEM:
• At the time erection of the roof began, the Terminal's concrete floor structure was complete up to the primary floor
level.
• This floor was thus used during installation as a staging area and work surface for both men and equipment.
• Designed for live loads as much as 250 pounds per square foot, it was able to support up to 40ton cranes, provided
that load distributing mats were used.
• The steel masts were delivered to site in one piece.
• Top weldments, rigging, and miscellaneous hardware were attached while the masts were on the ground.
• The masts were then erected using conventional boom cranes located outside the terminal.

11. • As a pioneer in sustainable design, Fentress set
the groundwork for an environmentally
responsible airport design.
• Natural daylight bathes the interior of the
terminal via numerous clerestories, curtain-walls
(with a low-e coating) and the translucent roof.
• The roof material allows 10 percent of visible
light to pass through the fabric during the day,
while it reflects 90 percent of solar radiation in a
high-altitude environment, reducing solar heat
gain.
• The canopy drastically reduces the need for
indoor lighting during daylight hours, capitalizing
on Denver’s 300 days of sunshine per year.
❖ SUSTAINABILITY:
❖ MATERIALS:
• PTFE Fiberglass
• Steel Mast
• Glass
• Concrete Floor