Siam Patumwan House Project
Office building near BTS National Stadium with acoustic management in the lobby area

At the Phaya Thai intersection, one of the busiest spots in Bangkok
Siam Patumwan House is situated amidst human traffic, city noise, the Skytrain, and a non-stop rhythm of life.
This building is connected to BTS National Stadium and is located near the Bangkok Art and Culture Centre, making the lobby not just a passageway, but a welcoming space for diverse visitors throughout the day.
The lobby is the first space building users experience. It is a focal point for walking, waiting, conversation, and communication. However, large open spaces like this often come with an unseen problem — echoes and overlapping noise that disrupt the comfortable atmosphere.

When sound is uncontrolled, conversation becomes tiring, the sense of professionalism gradually fades, and the First Impression that should be clear is instead overshadowed by chaos.
This is therefore a key challenge for the design by DWP, which aims for this lobby to be not only beautiful, but also "sound great and feel right".
The role of Trandar Series F Acoustic Ceiling
with tongue-and-groove V-Grove joints and a smooth surface, thus quietly begins. Not as the most visually prominent element, but as the element that allows the entire space to “function as it should”.
Trandar Series F helps absorb echoes and reduce reverberation within the space.
Making conversations clearer, the overall atmosphere calm, comfortable, and welcoming to many users at the same time.


At the same time, the ceiling systems are designed to align with architectural concepts
in both form and texture, enhancing dimension in the lobby space without disrupting the overall design integrity. They also seamlessly accommodate essential building systems such as lighting, air conditioning, and fire protection systems.

Ultimately, the quality of a lobby is not measured by luxury alone, but by the feeling it evokes from the very first step inside.
And at Siam Patumwan House, the right balance of acoustic comfort is one of the key details that helps this building perfectly embrace every rhythm of urban life.