Daniela Zarichta 05-39079

concretecakeUrban and Civil

Nov 29, 2013 (3 years and 8 months ago)

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Daniela Zarichta

05
-
39079


Definition of “post and lintel”


Lintel


Post


Ancient architectural styles


Uses in modern architecture

Post and lintel

is a construction technique, where a horizontal
member (
lintel
) is supported by two vertical
posts

at either
end. This very simple form is commonly used to support the
weight of the structure located above the openings in a bearing
wall created by windows and doors.




Is a horizontal beam used in
the construction of buildings




Is a major architectural
contribution of ancient
Greece.




The job of the lintel is to
bear the loads that rest on it,
(as its own load) without
deforming or breaking.




Failure occurs when the
material is too weak or the
lintel is too long.




May be made of wood,
stone, steel or reinforced or
pre tensioned concrete.


LINTEL

DEFORMATION

COMPRESSION
FORCES

Posts


The job of the post is to support
the lintel weight and the load
above it without crushing or
bulking.



Failure occurs for excessive
weakness or length



The material must be specially
strong in compression.



The posts or columns are made
of stone, steel, concrete or
reinforced concrete.



Masonry posts, including those
of bricks, may be highly efficient

The post and lintel structure
can be repeated many times,
to form forming decks that
can become roofs or be
occupied as floors.


The trabeated system is a
fundamental principle of
Neolithic architecture, Ancient
Greek architecture and
Ancient Egyptian architecture


Neolithic Architecture



The Neolithic places were heavily constructed, with dozens
of posts in the interior space, and this style of structure,
where the weight of the roof is carried on posts buried in
the ground, persists for most of prehistory


Greek architecture is
characterized by post and
lintel stone and white
marble construction and
columns in drum sections.






The temples are understood as
houses of the deity, containing
statues of the god or goddess.


Greek Architecture


Roman Architecture

The roman architecture is
based mainly in the Greek
style.


By this reason, the roman
architecture is based also
in the construction of
structures made with
stone or marble, using the
post an lintel technique


Chinese architecture has its
root in Neolithic expression.


The traditional timber hall in China has
stayed close to its Neolithic roots, with
the weight of the roof is still carried on
posts rather than on rigid walls.


Chinese Architecture


Japanese Architecture

Japanese architecture used
Wood to build the structures
with post and lintel method.


Due the low weight of the Wood, the
opening of the windows and doors
were large, and the walls were thin.


Wood extracted from
cypress trees was used to
elaborate the columns


Egyptian architecture

The buildings were erected without
mortar, with stones precisely cut and
fixed together, forming very tick walls.

The stone columns were closely
spaced, with massive lintels with
short spans and openings, because
its were made with stone.



Indian Architecture

Many of the Indian architecture is a
mixture of styles of different ethnics. The
use of sandstone and marble in many
structures is a Persian influence.

the architectural use of a lintel is purely ornamental

in the case of Indian rock
-
cut architecture

Nowadays, the production of the cast
iron and steel columns and beams
refined the post and lintel technique,
offering greater strength, reduced mass
and weight of the buildings.

Steel and reinforced concrete
skeletons, the most modern
materials used besides wood,
restore to modern architecture the
simplicity of the oldest structures
known.

Doors

Windows


Frameworks

Porchs


Fireplaces


Internal decortarion


Post and lintel is a simple construction technique for the
creation of openings



There is two main structural components: THE LINTEL,
which is an horizontal beam, supported in both ends by
THE POSTS



The lintel must be resistant in tension, while the posts
should be resistant in compression



Post and lintel is the basis of many of the most important
ancient architecture styles around the world



Nowadays, Post an lintel technique implies the use of Iron
and steel for the creation of windows, doors, frameworks
and other common features.