Materials this type of roof may be built with materials such as brick steel concrete and clay gypsum mortar.
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Upper side common rafters are supported on a wall plate which in turn rest on a projecting corbel stone from the wall.
Terminology 2 0 for the purpose of this standard the following definitions shall pply.
1 1 this standard covers the design and construction of jack arch type of built up floor or roof.
Among the advantages of jack arch roofing is unlimited length.
Lower side rest on the wall plate.
1 2 this standard covers only the construction practices that are in general use in this country.
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Jack arch roof construction where trapezoidal reinforced concrete beams are used at intervals between which hollow terra cotta blocks form small elongated multiple vaults.
The more traditional ones are called jack arches where the arches are formed in the roof itself supported by the centering while the recent researched type is arch panel roof where the arches are made on ground to be lifted up and placed.
Lean to roof shed roof it is used covering verandah sheds and outhouses connected to main building.
2 1 brick jack arch this is a low arch constructed with bricks laid.
The opening will accommodate upos 0018 fire box door.
Once the width of the room is limited say within 12 to 15 t which can be connected by wood beam or steel girder the length of the.
The arch detailed here spans a 410mm square fire box loading opening in the facade of a contraflow heater.
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Determining the point of intersection on the centre line is of the utmost importance to ensure the extrados is the right length to accommodate all 10 voussoir and the key.
Flat roofs besides above another types of roofs are tin cement sheets t iron stone slab r b c and rcc slab.
Above them concrete fill is laid providing a level surface upon which the flooring finish can be if there is another level in the structure.
The flat roof are constructed in flag stones reinforced cement concrete reinforced brick work jack arch roof or precast cement concrete units.
Roofing material rests on battens battens on common rafter and common rafter on wall plate.
13 efficient water proofing and roof drainage.
The roofing technique in auroville is that of jack arch roof with terra cotta hollow blocks and pre cast concrete beams.
