BO. OBRERO, DAVAO CITY
BUILDING SYSTEM DESIGN
CEC 222
Building Envelope Systems and Assemblies
WRITTEN REPORT
Discuss the basic principles involved in the appropriate selection and application of
building envelope systems relative to:
1. Building Aesthetics
2. Building Durability
3. Energy and Material Resources
Site some example projects (actual project) that best describe these characteristics.
, 1. BUILDING AESTHETICS
In a building, aesthetics, most especially the façade, is usually the first thing that a
person notices. The aesthetics of the building is considered an art. It covers the combined
effects of different elements which include the building's shape, size, texture, color,
balance, movement, contrast, proportion, space, pattern, etc. Architects are in-charge of
the appeal of the building from the outside to the inside, as well as the positioning of the
elements inside.
The design and beauty of a building or structure pleases the eye of everyone who sees
it. However, there are several factors that affect the effectivity of the aesthetics of a
building. These factors should be considered to prevent future problems that, as said,
might affect the aesthetical performance of building elements.
a. Weathering
This is dominant among buildings depending on the materials being used,
especially on the exterior since it is exposed outside where weathering can occur
and affect things around. The location of the structure also affects the occurrence
of weathering. A wooden house, for example, which is located near a rainforest
area might easily be affected than those wooden houses which are built in an area
with less rainfall. The aesthetic aspect of the wooden house located near the
rainforest is at risk of being spoilt.
b. Decay
Decay is a biotic degradation process that can affect both the functionality
and aesthetics of a building. For example, decay might have different kinetics
depending on the type of fungi causing it, and consequently it can affect a
materials’ functionality and appearance in diverse ways.
c. Waterlogging
Just like decay, waterlogging is defined as the slow deterioration process
in anaerobic conditions, which is caused by the activity of bacteria. Insect activity,
for example, might also have significant influences on the outlook of biomaterials,
as well as on the material’s functionality and safety. Rise of water through capillary
in the buildings, causes the peeling off of plasters, which is a building material used
for the protective or decorative coating of walls and ceilings and for molding and
casting decorative elements. It also enables the appearance of salt patched on the
walls of the buildings.
d. Moisture Transfer
Moisture Transfer is defined as the process where moisture move from one
place to another. The moisture transfer in the buildings envelopes reduced the heat
transfer from the outside to the inside, which is a valid way to reduce the energy
consumption of air-conditioning. However, it only places a role for the first few years
of a building’s life. The liquid precipitation, leaks, water vapor, liquid vapor from
soil, and built-in moisture are considered the primary sources of moisture transfer
that can affect the aesthetics and even the stability of a building.