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Sliding doors

A sliding door is a type ofdoorwhich openshorizontallyby sliding, whereby the door is either mounted

on or suspended from a track. Types of sliding doors includepocket doors,Arcadia doors, and bypass

doors. Sliding doors are commonly used forshowerdoors, glass doors,screen doors, andwardrobe

doors.

The mechanism used to operate a sliding door is called sliding door gear. There are two standard types,

top hung or bottom rolling systems.

Sliding folding door

The folding sliding door also referred to as bi fold doors, folding patio doors, sliding folding doors,

concertina or folding doors, can provide a solution to the restrictions created by the boundaries of

traditional exterior and internal doors and windows.

Rcc footing

There are mainly two types of R.C.C. footings:

1. One way reinforced footings.

2. Two way reinforced footings.

1. One Way Reinforced Footing: These footings are for the walls. In these footings main

reinforcements are in the transverse direction of wall. In longitudinal directions there will beonly nominal reinforcement.

2. Two Way Reinforced Footings: For columns two way reinforced footings are provided.

The following types of the footings are common:

(i) Isolated Column Footings: If separate footings are provided for each column, it is calledisolated column footing. Figure 7.3 shows a typical isolated column footing. The size of footing

is based on the area required to distribute the load of the columns safely over the soil . These

footings are provided over a 100 to 150 mm bed concrete. Required reinforcements andthickness of footing are found by the design engineers. Thickness may be uniform or varying.

Framed structures

A framed structure in any material is one that is made stable by a skeleton that is able to stand by itself

as a rigid structure without depending on floors or walls to resist deformation. Materials such as wood,

steel, and reinforced concrete, which are strong in both tension and compression, make the best

members for framing. Masonry skeletons, which cannot be made rigid without walls, are not frames.

The heavy timber frame, in which large posts, spaced relatively far apart, support thick floor and roof

beams, was the commonest type of construction in eastern Asia and northern Europe from prehistoric

times to the mid-19th century.

http://en.wikipedia.org/wiki/Doorhttp://en.wikipedia.org/wiki/Doorhttp://en.wikipedia.org/wiki/Doorhttp://en.wikipedia.org/wiki/Horizontal_planehttp://en.wikipedia.org/wiki/Horizontal_planehttp://en.wikipedia.org/wiki/Horizontal_planehttp://en.wikipedia.org/wiki/Pocket_doorhttp://en.wikipedia.org/wiki/Pocket_doorhttp://en.wikipedia.org/wiki/Pocket_doorhttp://en.wikipedia.org/wiki/Arcadia_doorhttp://en.wikipedia.org/wiki/Arcadia_doorhttp://en.wikipedia.org/wiki/Arcadia_doorhttp://en.wikipedia.org/wiki/Showerhttp://en.wikipedia.org/wiki/Showerhttp://en.wikipedia.org/wiki/Showerhttp://en.wikipedia.org/wiki/Screen_doorhttp://en.wikipedia.org/wiki/Screen_doorhttp://en.wikipedia.org/wiki/Screen_doorhttp://en.wikipedia.org/wiki/Wardrobehttp://en.wikipedia.org/wiki/Wardrobehttp://en.wikipedia.org/wiki/Wardrobehttp://en.wikipedia.org/wiki/Wardrobehttp://en.wikipedia.org/wiki/Screen_doorhttp://en.wikipedia.org/wiki/Showerhttp://en.wikipedia.org/wiki/Arcadia_doorhttp://en.wikipedia.org/wiki/Pocket_doorhttp://en.wikipedia.org/wiki/Horizontal_planehttp://en.wikipedia.org/wiki/Door

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Foundations form an imporpmt part of building construction. The forces and moments

acting on a structure have to be ultimately transmitted to the ground and this is achieved by

means of foundations. The loads on a building are transmitted downwards, floor by floor by

means of columns and/or walls. If these are directly set on the ground, the pressures under

them would be so much that either the soil will give way or large and uneven settlements

would take place. In order to prevent this, the load is spread over a wider area by means of

foundations such as footings, strips, rafts etc. At the same time, we have to ensure that the

stresses in the elements of foundation like concrete, steel masonry etc. are within the

specified limits.