Arch System - type of arches

Presentation on Arches and Arch System

Arch System and Arches
Arch system
Types of Arches
Arch is a curved structure designed to carry loads across a gap mainly by compression. The mechanical principle of the arch is precisely the same as that of the portal frame. The straight pieces of material joined by sharp bends are smoothed into a continuous curve. This increases the cost of construction but greatly reduces the stresses.  Arch Terminology
The geometry of the curve further affects the cost and stresses. The circular arch is easiest to construct, the cattery arch is the most efficient. Arches can be three pinned, two pinned or rigid.

– It is important to minimize the arch  THRUST so as to reduce the dimensions of the tie rod, or to ensure that the soil will not move under the pressure of the abutments.

– The THRUST is proportional  to the total LOAD & to the SPAN, and inversely proportional to the RISE of the arch.

– In arches rise to span ratio should not be less than 1/8 and Riser minimum should be 1/8 of the span & 2/3rd maximum.

 [slideshare id=59531918&doc=arches-160314135925]
Guneet Singh Khurana
Ar. Guneet Singh Khurana is a visionary architect, author and currently working in Design Arch as Principal Architect. He holds B.Arch degree from Department of Architecture, Guru Nanak Dev University, Amritsar. His creative approach and interest in designing inspired him to pursue future in architecture. He has an extensive experience in the field of architecture and urban design. He is the founder of (a resource portal dedicated to providing information and knowledge to the growing community of architecture, interior design, landscape and planning). He is recipient of the PAFE Award for excellence in the field of Environment friendly architecture and University Scholarship for excellence in academics.


  • January 19, 2016


    Very informative presentation.
    You can put more good materials and good luck in the new year!

  • June 25, 2017

    Nuria Rodríguez Botella

    Thank you, really useful. I was looking for this information in order to translate Spanish architectural descriptions into English and it was hard to find so technical terms… 🙂

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