Wall cracks occur for several reasons. In
architecture and civil science it is divided into two kinds of cracks,
tiny cracks or hairline cracks called, because retal form small and
large cracks or branched and generally called structural cracks. For
hairline cracks are physically located on the surface of the wall with a
depth of 1 mm and a width of 1mm, hair Cracks often occur because the
process of making hasty wall coverings and the use of specific materials
that are not suitable standards in civil works. So the level of dryness was not optimal. In
addition to the material usage ratio improper holding capacity will
occur between particles some material was not optimal as well. For
example to make a plaster wall coverings in the standard of quality
wear ratio of 1: 5 means that 1 part cement versus 5 parts sand made
specific comparisons of 1: 8, 1 part of cement with 8 parts of sand.
This
will result in less maximum adhesion of cement to sand, so that when
made into dough plastering, stucco adhesion and quality becomes less. More volume than the volume of sand cement, stucco became quickly broke dry time. For
large or wide cracks occurred due to the process of building a part of
its structure due to uneven loading and exceed power to bear part of the
building, starting from the foundation, sloof, columns and beams. As a result of the imposition of an over stress or outside the building load bearing capabilityresulting walls are not load bearing structural join, so the walls will be broken or fractured.
Briefly
things that cause cracking of the structure is due to the dimensions of
the foundation, sloof, columns and beams are less suitable standards or
materials used are not suitable standards, such as the calculation of
the iron structure used 12 mm in diameter, which is used in the field is
only 10 mm iron or ratio materials used are not in accordance with the provisions of the civil standard calculations. Given
the magnitude of the harmful effects of the use of less precisely the
quality and quantity of materials in making structures it needs to make
sure the legal provisions to protect people from crime or other human
error in seeking personal gain.
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