Arch comprises of the wedge-shaped blocks formed with stones or bricks which provides collaborative support to one other. These are supported at the end through piers or abutments. Similar to lintels, an arch is constructed to bear the weight of the structure over the opening.
Given below the details of the various sections of an arch:
1. ABUTMENT OR PIER:
It belongs to the portion of wall or pier upon which the arch is supported.
2. ARCH RING:
It is a series of stones or bricks which contain a curve same as that of the arch.
3. INTRADOS OR SOFFIT:
It stands for the under-surface of an arch.
4. EXTRADOS:
It belongs to the external surface of an arch or the exterior curve of the arch ring.
5. VOUSSOIRS OR ARCH BLOCK:
It stands for the wedge-shaped units to develop the arch are called voussoirs or arch stones or arch block.
6. SPRINGING STONE:
Springing stone or springer is the initial voussoirs at springing level on both side of the arch.
7. SPRINGING LINE:
It belongs to an fictitious line that connects two springing points.
8. CROWN:
Crown stands for the uppermost point of the extrados or it is the top part of the arch.
9. KEY-STONE:
It stands for the uppermost central wedge-shaped block of an arch.
10. SKEW-BACK:
It belongs to the surface of the abutment on which the arch is supported on.
11. SPAN:
Span refers to the apparent horizontal gap among supports.
12. RISE:
Rise belongs to the vertical distance among the springing line and the uppermost point on the intrados.
13. SPRINGING POINT:
Springing points belongs to the points at extremities of the intrados.
14. DEPTH OF ARCH:
The depth of the arch signifies the perpendicular space among the intrados and the extrados.
15. HAUNCH:
Haunch of the arch belongs to the part of the arch that is located centrally among the key and skew backs.
16. SPANDRIL:
Spandril stands for the triangular walling surrounded by the extrados of the arch, a horizontal line from the crown of the arch and a perpendicular line from the rising of the outer curves.
Article Source : http://www.dailycivil.com
Given below the details of the various sections of an arch:
1. ABUTMENT OR PIER:
It belongs to the portion of wall or pier upon which the arch is supported.
2. ARCH RING:
It is a series of stones or bricks which contain a curve same as that of the arch.
3. INTRADOS OR SOFFIT:
It stands for the under-surface of an arch.
4. EXTRADOS:
It belongs to the external surface of an arch or the exterior curve of the arch ring.
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5. VOUSSOIRS OR ARCH BLOCK:
It stands for the wedge-shaped units to develop the arch are called voussoirs or arch stones or arch block.
6. SPRINGING STONE:
Springing stone or springer is the initial voussoirs at springing level on both side of the arch.
7. SPRINGING LINE:
It belongs to an fictitious line that connects two springing points.
8. CROWN:
Crown stands for the uppermost point of the extrados or it is the top part of the arch.
9. KEY-STONE:
It stands for the uppermost central wedge-shaped block of an arch.
10. SKEW-BACK:
It belongs to the surface of the abutment on which the arch is supported on.
11. SPAN:
Span refers to the apparent horizontal gap among supports.
12. RISE:
Rise belongs to the vertical distance among the springing line and the uppermost point on the intrados.
13. SPRINGING POINT:
Springing points belongs to the points at extremities of the intrados.
14. DEPTH OF ARCH:
The depth of the arch signifies the perpendicular space among the intrados and the extrados.
15. HAUNCH:
Haunch of the arch belongs to the part of the arch that is located centrally among the key and skew backs.
16. SPANDRIL:
Spandril stands for the triangular walling surrounded by the extrados of the arch, a horizontal line from the crown of the arch and a perpendicular line from the rising of the outer curves.
Article Source : http://www.dailycivil.com
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