ARCHES AND LINTELS

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ARCHES: A structure, especially one of masonry, forming the curved, pointed, or flat upper edge of an open space and supporting the weight above it, as in a bridge or doorway The arch supports a vertical load primarily by axial compression of its wedge-shaped voussoirs.

A curved structural member spanning an opening. The wedge shaped elements that make up an arch keep one another in place and transform the vertical pressure of the structure above into lateral pressure.MD. shabbir, IIA member, MURP

TECHNICAL TERMS IN ARCH:

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TECHNICAL TERMS IN ARCH:

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TECHNICAL TERMS IN ARCH:KEY STONE: A keystone is the wedge-shaped stone piece at the apex of a masonry vault or arch, which is the final piece placed during construction and locks all the stones into position, allowing the arch to bear weight.

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TECHNICAL TERMS IN ARCH:voussoirs: A wedge-shaped stone or brick that is used with others to construct an arch or vault. Arch construction depends essentially on the wedge. If a series of wedge-shaped blocks i.e., ones in which the upper edge is wider than the lower edgeare set flank to flank in the manner , the result is an arch. These blocks are called voussoirs. Each voussoir must be precisely cut so that it presses firmly against the surface of neighboring blocks and conducts loads uniformly. The central voussoir is called the keystone.MD. shabbir, IIA member, MURP

TECHNICAL TERMS IN ARCH:SPRINGER: The lowest stone in an arch. The bottom stone of an arch resting on the impost. The point or place where the curve of an arch or vault begins. The Springer's usually have one or both joints horizontal. The upper surface of the Springer, against which the first voussoir of the real arch starts, is said to be skew backed.MD. shabbir, IIA member, MURPSPRINGER

TECHNICAL TERMS IN ARCH:IMPOST: An impost is the topmost part of an architectural column. Also called an abacus, it is usually a flat piece of stone. It can be carved or decorated.

IMPOST

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TECHNICAL TERMS IN ARCH:PIER: A pier is a solid block of masonry supporting an arch. They are often made of stone, but those serving as primary support for large arches are usually made of concrete.

PIER

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TECHNICAL TERMS IN ARCH:FOUNDATION: The foundation is a large stone that is set into the ground. The piers are then built on top of it. It transfers the weight of the arch to the soil in the ground.

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TECHNICAL TERMS IN ARCH:INTRADOS OR SOFFIT:

It is the under surface of an arch.Crown The top section of a curved arch Springing Line A horizontal construction line denoting the starting of the curve in curved arches, or the bottom of a flat arch. Haunch The first few voussoirs up from the springing line. Ie it is the portion of the arch situated centrally between the key and the skewbacks. Extrados A construction line denoting outer limit of the arch. It is used in the setting out

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TECHNICAL TERMS IN ARCH:

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TYPES OF ARCHES:

MD. shabbir, IIA member, MURP

TYPES OF ARCHES:

MD. shabbir, IIA member, MURP

TYPES OF ARCHES:

MD. shabbir, IIA member, MURP

TYPES OF ARCHES:

MD. shabbir, IIA member, MURP

TYPES OF ARCHES:

MD. shabbir, IIA member, MURP

TYPES OF ARCHES:

MD. shabbir, IIA member, MURP

TYPES OF ARCHES:

MD. shabbir, IIA member, MURP

TYPES OF ARCHES:

MD. shabbir, IIA member, MURP

TYPES OF ARCHES:

MD. shabbir, IIA member, MURP

TYPES OF ARCHES:

MD. shabbir, IIA member, MURP

TYPES OF ARCHES:

MD. shabbir, IIA member, MURP

TYPES OF ARCHES:

MD. shabbir, IIA member, MURP

TYPES OF ARCHES:

MD. shabbir, IIA member, MURP

TYPES OF ARCHES:

MD. shabbir, IIA member, MURP

TYPES OF ARCHES:

MD. shabbir, IIA member, MURP

TYPES OF ARCHES:

MD. shabbir, IIA member, MURP

LINTELS:A lintel is a horizontal structural member, which is fixed over the openings viz.., doors, windows recesses etc. to support the structure over the opening. Lintels are usually rectangular in shape and they afford facilities for fixing the door and window frames, wherever they are used. Lintels may be made of several materials such as wood, stone , brick, reinforced concrete, rolled steel sections embedded in the cement concreteWOODEN LINTEL

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LINTELS:

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LINTELS:

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LINTELS:

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LINTELS:

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LINTELS:

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