Estados Unidos
Estados Unidos

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Point Bonita Lighthouse Pedestrian Bridge

Proteção contra desprendimentos - Point Bonita Lighthouse Pedestrian Bridge 2012

Point Bonita Lighthouse

Proteção contra desprendimentos - Point Bonita Lighthouse Pedestrian Bridge 2012

Installed SPIDER S4-230 viewed from above

Proteção contra desprendimentos - Point Bonita Lighthouse Pedestrian Bridge 2012

Installed SPIDER view of the spike plates

Proteção contra desprendimentos - Point Bonita Lighthouse Pedestrian Bridge 2012

New Pedestrian Bridge

 

Sistemas

 

Comprimento do sistema

223 m

 

Ano de instalação

2012

Situação inicial

In 1954, the U.S. Coast Guard built a suspension footbridge to access the Point Bonita Lighthouse on the outer northwestern point overlooking the Pacific Ocean and San Francisco Bay. Over the years, the bridge had been renovated, but needed to be replaced in 2012. Before a new bridge could be constructed, the rock face needed to be stabilized. The point’s rock mass was fracturing and displaying signs of instability due to years of exposure to harsh marine elements. Stabilization was required to support the weight of a modern bridge without fracturing further.

Descrição

A stainless steel anchored SPIDER S4-230 mesh system was installed to stabilize the rock face. The diamond shaped net is comprised of three 4 mm wires twisted into a 1x3 strand, with tensile strength of 239 ksi and a diameter of 5/16 inches. As required by the National Park Service, the net was powder coated bronze to better blend with the natural color of the rock mass and further protect against corrosion.

The project won ENR California’s Best Small Project — Construction award in 2012.

Promotor

National Park Service

Contratante

AIS Construction (defunct)

Objecto protegido

Edifício, Infra-estrutura turística

Proteção contra a corrosão

GEOBRUGG SUPERCOATING + PET, INOX / STAINLESS

Empreteiro

HDR, Inc.

Outras empresas envolvidas

Yeh and Associates, Inc.

O seu contacto local

Kevin H. Coyle
 

Kevin H. Coyle

Regional Manager Northeast

Riscos naturais
Engenharia Hidráulica
Geobrugg North America, LLC,3 Beaudet Terr,Columbia CT 06237 / Estados Unidos Regional Manager Northeast

E-mail

Saleh Feidi
 

Saleh Feidi

Regional Manager California

Riscos naturais
Engenharia Hidráulica
Geobrugg North America, LLC,8921 Emperor Ave.,San Gabriel, California 91775 / Estados Unidos Regional Manager California

E-mail

John Kalejta
 

John Kalejta

Regional Manager Central US

Riscos naturais
Engenharia Hidráulica
Geobrugg North America, LLC,3215 67th Avenue Pl,Greeley CO 80634 / Estados Unidos Regional Manager Central US

E-mail

Bob Lyne
 

Bob Lyne

Regional Manager Southeast

Riscos naturais
Engenharia Hidráulica
Geobrugg North America, LLC,8004 Windspray Drive,Summerfield NC 27358 / Estados Unidos Regional Manager Southeast

E-mail

Pierce Runnels, Civil Engineer
   

Pierce Runnels

General Manager Geobrugg North America

Riscos naturais
Geobrugg North America, LLC,22 Centro Algodones , Civil Engineer General Manager Geobrugg North America

E-mail

Tim Shevlin
 

Tim Shevlin

Sales Director

Riscos naturais
Geobrugg North America, LLC,Salem OR 97302 / Estados Unidos Sales Director

E-mail