DESIGN AND MATERIAL OF FAÇADE
FOR NOISE ATTENUATION FOR MULTI-BED WARD WITH
NATURAL VENTILATION IN SURABAYA
(Chase Study of Ruang Rawat Inap Seruni RSUD Dr. Soetomo
Surabaya)
Author
NRP
Supervisor 1
Supervisor 2
: Okta Putra Setio Ardianto
: 3211204902
: Dr. Eng. Dpl. Ing. Sri Nastiti N. E, MT
: Ir. Wiratno Argo Asmoro, MSc
ABSTRACT
Environmental noise that lasts 24 hours may risk to transmit into the
building through openings in façades wall on natural ventilated wards. Outside
Seruni wards in Dr Soetomo public hospital Surabaya, there are several sources of
noise from the lounge, corridors and parking area which have risk to transmit into
the building. This study aims to determine the effect of design and material
modifications to the building's façade wall of natural ventilated hospital building
in minimizing the propagation of noise from outside the building while providing
natural ventilation.
Research methodology used is experiment with the help of mathematical
calculations and computer simulation AIOLOS to achieve the research objectives.
Experiments based on field measurement data for 24-hour on-site research object.
Acoustic parameters studied were the ability of the façade wall transmission loss
while natural ventilation parameters consider air change and wind speed.
The needs of external noise insulation and natural ventilation are difficult
to fulfill simultaneously. Noise insulation and ventilation needs was contradictory.
From experiments known that openings have negative effect to noise insulation
capability but have positive implications for natural ventilation. Each area of
openings increase twice from previous area resulted in the decreased ability of the
insulation on average 15% from previous abilities. However, with the same
increment of opening area increased air change and wind speeds threefold from
previous conditions. Material differences affect on differences noise insulation
capabilities at frequencies 125, 250 and 500 Hz only. At frequencies 1000, 2000
and 4000 Hz differences are not too significant.
Keywords : facade, material, natural ventilation, noise insulation, wards xi