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Constructing Environments Log Book
Week 1
By Tania P. Kanadi
Constructing Environments
Loads Materials Forces
Static Dynamic Strength
Stiffness
Shape
Material behavior
Economy
Sustainability
Applied
slowly
Applied
suddenly
Dead load
Live load
Settlement load
Wind load
Earthquake load
Something that change the shape/movement of a body
Tension Compression
In the lecture we experiment with
how a structure holds when given a
load.
A sheet of A4 paper is to be folded
in any way to enable it to hold the
weight of a brick.
The A4 is mostly folded into layers
and taped to make a tube. The
many layers that the paper has
make the structure stronger, and
able to hold the brick.
Another tube is folded to make a
tube with many folds. The folds that
it has make the paper stiffer and so
the structure is not easily bent by
the brick’s weight. It is stronger and
suitable to hold the brick’s weight.
Other structures were made to be
short and thick. The structure is
very strong since it has many layers,
and can easily hold the brick.
In the studio, the exercise given was
to make towers out of MDF blocks.
MDF is an abbreviation for Medium
Density Fiber block. It is a light and
strong material commonly used to
make cabinets. We were divided
into groups and construct our tower
in any way we prefer.
Since the goal is to make the tower
as high as possible, we decided to
make a strong foundation to hold
the whole dead load of the tower,
so we applied a double layer of the
stretcher bond. Because we made
two layers of it, the load upon
reaching the bottom will be less per
area. We chose the stretcher bond
to ensure that the tower will still
stand even if some bricks are taken
away, rather than using the stack
bond in which the load path is only
one.
An arc was also built to act as a
door. We still use the stretcher
bond instead of a beam because the
beam seems to be unstable.
The tower was then built by
arranging a single layer stretcher
bond in the middle of the two
layers stretcher bond, so that the
load path is distributed well. The
upper part then was arranged still
with stretcher bond but with the
MDF placed on its side to enable
faster building and higher tower
with less weight.
Our tower was the highest in our
class, and I can say that it is quite
strong. The MDFs were slowly
removed in the middle and the
structure can still hold itself after
about 40 or 50 MDFs are removed.
Constructing Environments Log Book
Week 2
By Tania P. Kanadi
Construction
Structural systems Construction
systems
ESD
Solid
Surface
Skeletal
Membrane
Joints
Compression Efficient
Planar Cheap
Hybrid
Enclosure
Structural
Service
Performance requirement
Aesthetic qualities
Economic efficiencies
Environmental impact
Water harvesting
Reflective cool roof
Natural lighting
Solar panel
Thermal mass
Passive solar shading
Fixed
Roller
Pin
In the lecture, we experiment with
different ways on how a water tank is
built. The frame of the water tank will
be made from straws, and pinned onto
a plastic container with the help of
some pins. The container will be filled
with weight later on.
At first, only 4 pins are given, and one
of the examples is a model with four
straws pinned on the container and
positioned carefully for the straw to be
straight. This method doesn’t work as
it is not stable enough. More pins were
then given and different models are
created. We have concluded from the
experiment that shorter frames are
stronger than longer frames, because
it is more stable. Also uses of folds on
the straw give it a stiffer characteristic,
allowing it to hold more weight.
However these folded straws were not
connected at the bottom, resulting
them to sprawl outwards.
Uses of ‘feet’ are implemented, and it
holds the weight if the feet are
connected at the bottom.
http://thumbs.dreamstime.com/z/old-
watertank-8755274.jpg
The tutorial this week requires us to
use balsa wood to build towers. The
balsa woods are cut into 40 thin slices
and are to be made as frames for the
tower. Balsa wood is flexible and very
light, furthermore it easily breaks. To
build the tower, we use balsa glue,
which dries very quickly, to connect
the balsa together.
We chose to make a triangle for the
base; the reason is mainly to conserve
the balsa sticks. We then connect two
balsa sticks to each side of the triangle
and cut pieces of balsa around half the
length of the base, and connect it
together to form a converted triangle.
As the balsa is flexible and is not very
strong, we put small pieces of balsa
sticks on the corners and where it is
weak to make it stronger.
We put a lot of balsa support on the
first and second level to ensure that
the tower can hold its weight and not
topple over.
From the third level and onwards, we
decided to build the tower straight
upwards rather than continuing the
converted triangle.
As a result, the third level onwards
were built much faster than the first
and second level, nevertheless, it fails
to rival the strength of the converted
triangle structure. The frames wobble
and cannot stay straight. To strengthen
it, more balsa sticks are connected
from the lower left corner to the upper
right corner. This makes the structure
a lot more stable, it cannot sway right
or left because of the tension of the
supporting balsa sticks.
Our tower is not the highest. It only
went up to the fourth level. The tower
can only carry the weight of four
pieces of paper, because the sticks on
the uppermost level were not
connected properly, as such it became
the weak point and the glue cannot
hold it. However, only that point
broke. This shows that it still has
potential to carry more weight.
Only this part
snaps.
Reference:
Ching, F. D. K. (2008). Building Construction Illustrated (4th Edition). Hoboken, New Jersey; Wiley.
Newton, C. (2014, March 5th). Basic Structural Forces. Retrieved from
https://app.lms.unimelb.edu.au/bbcswebdav/courses/ENVS10003_2014_SM1/WEEK%2001/Basic%20Structural%20Force
s%201.pdf
Newton, C. (2014, March 5th). Introduction to Materials. Retrieved from
http://www.youtube.com/watch?v=s4CJ8o_lJbg&feature=youtu.be
Newton, C. (2014, March 5th). Load Path Diagrams. Retrieved from
http://www.youtube.com/watch?v=y__V15j3IX4&feature=youtu.be
Newton, C. (2014, March 9th). Structural Joints. Retrieved from
http://www.youtube.com/watch?v=kxRdY0jSoJo&feature=youtu.be
Newton, C. (2014, March 9th). Structural System. Retrieved from http://www.youtube.com/watch?v=l--
JtPpI8uw&feature=youtu.be
Newton, C. (2014, March 9th). ESD and Selecting Materials. Retrieved from
http://www.youtube.com/watch?v=luxirHHxjIY&feature=youtu.be