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Hence, the bridge must be regularly inspected and maintained for the benefit of its users. There are three levels of inspection: 1. General inspection: Usual inspection of representative parts of a structure. Carried out nor more than two years after last general or principal inspection. After a major incident.
The two former islands that were levelled comprise about 25% of the surface area of the airport’s 12.55 Land reclamation for the airport added nearly 1% to the entirety of Hong Kong’s surface area. The project is the most expensive airport project ever, according to Guinness World Records. km² platform.
The problem areas, effects in foundation and defects in structure due to those causes are presented here. Problem Areas Effect on foundation Defects in structure Insufficient depth of foundation (mostly in soft clayey soil) Movement of foundation due to changes in water table seasonally, and movement due to trees and vegetation.
Rubble Stone Soling: The rubble stone generally used are of best variety of black trap / granite / basalt or other variety of stone available locally. The stone should be hard, durable free from defects and of required size as required at site or as per specification. Tweet Loading GET LATEST TOPICS IN YOUR EMAIL- SUBSCRIBE NOW.
The following points should he observed while setting out trenches: (i) Profiles, nails, strings and lime are used for Setting out the foundation plan. (ii) 2) The axial lines (center lines) of the trenches are marked with the help of profiles, sighting rails, strings and pegs. (3)
Depending on how big or complicated the pour is, the inspection may just take few minutes or it could take hours. Only when the formwork has been approved, may the pour take place.
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The first part is a visual inspection by the clerk of works or equivalent. The required amount of cover will always be specified on the design drawings, but no time should the cover be less than the maximum size of aggregate plus 5mm.
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Good foundation soil should be available at responsible depth. Nearness of schools, hospitals, market, etc. are considered good for residential site but these facilities do not carry any significance in the selection site for other public buildings. This aspect saves quite a bit in the cost of the building.
4 key innovations and construction trends across airport design 0 qpurcell Mon, 12/04/2023 - 10:04 Airports Here are some of the key trends Skanska is seeing in the aviation sector, from congestion solutions to sustainability. More than 40,000 airports worldwide facilitate the annual global travel of billions of passengers.
Normally the walls are connected directly to the foundations. These are called coupled shear walls because they behave as individual continuous wall sections coupled by the connecting beams or slabs.
Some examples of the occurrence of concentrated loads on a slab are a column, particularly on a pad foundation, and wheel loads. In pad foundations, where weight and depth are not so critical, its effects are satisfied by providing sufficient depth. Thus, the failure mechanism is by shear, hence the name is punching shear.
Always inspect the formwork prior to pouring. Some of the paint has run, and this has been transposed to the concrete. It is important to remember that the face of the concrete is effectively a negative of the formwork face.
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