8/10/2019 p28-31 Luminous 3-09 Octavio Frias de Oliveira Bridge Sao Paulo Brazil

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OCTVIO FRIAS DE OLIVEIRA BRIDGE, SO PAULO, BRAZIL

COLORED ACCENTS

ON THE RIVERWritten by Evelise GrunowThe lighting of the Octvio Frias de Oliveira Bridge in So Paulo, contrasts white

and coloured light in order to emphasise the innovative nature of the curved,

stayed structural system. Paulo Candura and Plinio Godoy, of Luz Urbana,

created the lighting design.

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The lighting of the Octvio Frias de Oliveira Bridge in So Paulo, contrasts

white and coloured light in order to emphasise the innovative nature of the

curved, stayed struc tural system. Paulo Candura and Plinio Godoy, of Luz

Urbana, created the lighting design.

The bridge aims to improve the trafc conditions in what is one of Brazils

largest metropolises by creating new links between strategic districts and the

commercial pole of the port of Santos. Known as the Estaiada bridge (the

Stayed bridge), and opened in May 2008, the bridge has quickly become an

icon of So Paulos landscape. Its dense mesh of stays and the single elevatedsupport tower, 138 metres high, stand out between the banks of the Pinheiros

river, which form one of the structural routes for metropolitan road trafc.

The aim of the lighting technology was to emphasise the innovative nature

of the bridges engineering and architecture, designed by the architect Joo

Valente, of Valente Valente Arquitetos. It is designed in such a way as to

create a clear distinction between the daytime and night-time views of the

bridge. Consequently, starting wi th the assumption that the many yellow stays

(144 of them altogether) take pr iority over natural light, it was decided that

the ar ticial lighting would ser ve the purpose of emphasising the form and

dimensions of the concrete tower.

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ClientPrefeituw Municipal da Cidade de So PauloConstrutora OAS

ArchitectJoo Valente, Valen te Valente Arquite tos,So Paulo, Brazil

Lighting designPlinio Godoy, Paulo Candura, So Paulo, Brazil

Lighting solutionsAlexandre Ferrari, Philips Latin America

Light sourcesPhilips Cosmopolis CPO-TW 140W /728MHN-LA 1000W /956Cree LED-HB red, blue and green RGB

LuminairesPhilips Milewide, SRS421, road optic,ArenaVision, MVF403, Cat A1 to A5 reectors,Colorblast 12, BCP470, 8 and 23 beams

Lighting controlsPhilips iPlayer

Websiteswww.valentearquitetos.com.brwww.luzurbana.com.br

LUMINANCE AS A DESIGN RESOURCEWe opted for primary, volumetric lighting of the tower, commented PlinioGodoy with reference to the decision not to allow the night-time lighting effects

to distor t the perception of the real dimensions of the concrete s tructure.

For this reason, use was made of ArenaVision oodlights, 1,000 W, installed in

the vicinity of the br idge so as to focus in parallel on the main surfaces of the

volume of concrete. We used luminance as a design element, Godoy added.

However, whilst the tower was still being built, it was found that the surrounding

light would interfere negatively with the mesh of stays, due to the constant

presence of an unintentional and undesirable linear beam of light. In order

to ensure that the concept of emphasising the v iew of the tower remained

intact, additional ArenaVision oodlights were added, for directional focus

on strategic points of the stays. The lighting designers were aware that

public lighting makes a statement, hence the decision to focus each oodlightindividually, so as to cancel out any interference by lighting from the city.

In addition, this equipment was oriented in such a way as to create an area of

shadow on the inner surfaces of the tower, with homogeneous parallel lighting

of the inner sur face, in parallel to the Pinheiros River.

The aim was to separate the lit areas from other, dark areas, on which the

coloured light would be projected, as specied by the lighting design.

In this respect Godoy pointed out that the coloured lighting of the br idge

is discreet and homogeneous, in line with the particular relationship which

the residents of So Paulo have with regard to the colour applied to publ ic

monuments. The lighting designer explained: This is a very sensitive

relationship, timid even, and different from the situation in other major cities

in the country, such as in the North West, for example. Use was thereforemade of 146 Colorblast LED oodlights, with varied beam angles so that

surfaces with different heights would be lit homogeneously.

LIGHT ON THE DECKThe lighting of the two trafc lanes was based on two main criter ia. Firstly,

since the bridge is located in a relatively dark area of the banks of the Pinheiros,

the aim was to create lighting of approximately 70 lux on the trafc lanes,

compared with 20 lux required in the surrounding environment. Godoy said:

People feel safe in these conditions.

In addition, the interface of the lighting equipment with the line of stays

dictated a maximum height of 6 metres for the lighting posts. These use

Milewide street luminaires with CosmoPolis lamps, and in view of their

limited height they are arranged bilaterally and asymmetrically, in other

words interposed every 15 metres on both sides of the lane. The lightingof the Octvio Frias de Oliveira Br idge uses efcient, modern technology

which is representative of the state of the art in Brazilian lighting design.

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