This is a renovation project about the podium of New Era of China which is a high-rise office building. It is located near Daguanying metro station, in Guang’an District, Beijing. The podium was used as Hualian Department Store. However, due to the rapid development of contemporary society, project party decided to renew the façade and interior space.
The podium consists of three floors. It was designed with characteristic curved shape in 1990s. There are two office buildings with different height above the podium. As the street got developed, messy billboards covered the façade, which hid the building backward. In that case, the renewed façade is expected to be more integrated and outstanding.
The original curved form was simplex and architectural façade did not match with the commercial image. Consequently, we try to make the new façade more dynamic and show more details in the condition of its original form.
Secondly, existing stone-made curtain wall is kept considering construction energy consumption. Hence, the new added façade should be relatively light. Last but not least, exhibition or co-working space might be put in 2nd and 3rd floor. Due to different functions from the original ones, better daylighting and ventilation should be considered.
Taking all the above three points into account, we decided to use hollow aluminum tube louver to vertically cover the existing façade. The louvers give more details combined with original curved shape. What’s more, variation in tube density appears due to changes in diameter and location, which creating an uptrend in rhythm. Horizontally, according to distance between window openings, diaphragms in various heights are added for a more dynamic façade. To ensure the practice, the design is decided based on the modular size of aluminum tubes. It also reserves space for architectural lighting equipment.
Since the new façade is finished, lighting strategy of the curtain wall appears strengthening the effect of aluminum tubes, lightening through the whole architecture. To better present the shadow of louver, we light up the background wall behind the louver, which is similar with the lighting system in Baoli Theatre designed by Tadao Ando.
The way is to firstly install wall washer lights in the position of diaphragms and at the same time, leave proper distance between the wall and louvre, which encourages evenly lighting on the wall. In that case, a more dynamic louvre curtain wall would appear.
When night falls, turn on the light. The building is light as a new-material-made lantern, attracting people to come closer. As getting close, louvre on the curtain wall seems to be dancing with its shadow. Architectural vitality in this age is brought to this simplex community.