Diana Aguiar Narqui Amaya The arch Diana Aguiar Narqui Amaya

Table of content -Introduction -Definition -Characteristics -Variation of forms -History -Conclusion -References

Introduction Since the beginning of history, man has been preoccupied with finding a place to go, where to live, this need led to the creation of certain "house" where men take refuge.

In his early works made were symmetrical.. Over time the man was changing the form of the work

With the invention of the arch 2 problems were solved.. Definition With the invention of the arch 2 problems were solved..

Characteristics Wedge shapes Elements of the arch

An arch cannot replace a lintel on two free-standing posts unless the posts are massive enough to buttress the thrust and to conduct it into the foundations

May be varied to meet specific problems The forms of arch May be varied to meet specific problems

Fall into three basic categories: Rounded arch Arcade

Parabolic arch

Pointed Arches Vaults

The arch has been found in many different cultures.. History The arch has been found in many different cultures.. Mesopotamia

Egyptians Romans

Etruscans Medieval times Porte Auguste

Modern arches Steel Concrete Laminated wood

Conclusion

References en.wikipedia.org/wiki/Arch Encyclopaedia Britannica, vol. 1. Chicago: Encyclopaedia Britannica, Inc., 1974, pp. 1098 - 1099. Edited by Prof. Marianela Najul for second language teaching purposes. May, 2010. theriverlands.tripod.com/Writings/Arch/arch.html