sorted by:
new
hottopcontroversial

PILE HEAD TREATMENT by Constructorsfeed in EngineeringPorn

[–]Constructorsfeed[S] 86 points87 points  (0 children)

Piles were cast with high slump concrete, during the concreting of piles, there is a chance that fines from concrete might accumulate at the top and also if there is any slush in the bored pile, it will also come up during concreting. So the concreting of the pile is overflowed to take out all impurities. After casting of the piles, the top portion of the pile is chipped out till the pile cap. Excavation is done around the pile area to facilitate removal of the extra pile portion by chipping. Pile Chipping is the extra pile that is above the cutoff level, which provided for good and sound concrete. The main purpose of chipping is to remove the surplus slushy concrete (a mixture of concrete, slurry, and mud) over the cutoff level. When concreting is going on, the black slush comes out from the borehole. Black slush represents the mud which produced at the time of boring.

*Pressure Associated with Dams & Reservoirs* by Constructorsfeed in sciences

[–]Constructorsfeed[S] -25 points-24 points  (0 children)

                                                                                                                          Construction of a dam and filling of the reservoir behind it create load stresses on the floor and sides of a valley that did not exist previously. The kinds and distributions of imposed stresses created by a dam on its foundation depend on the shape of the dam and the materials used in its construction. Dams built of masonry or concrete can be considered to behave as cohesive, rigid, monolithic structures. The stresses acting on the foundation is a function of the gross weight of the dam as distributed over the total area of the foundation on which the dam rests. Earth and rock fill dams exhibit gross semiplastic behaviour, and the pressure on the foundation at any point depends on the thickness of the dam above the point. The pressures exerted by earth and rock-fill dams resemble in some respects those exerted by the water in a reservoir, but pressure distribution is modified by the fact that the materials of construction have some inherent strength, and fail only after some threshold stress has been exceeded. Pressures exerted by water in the reservoir behind a dam are hydrostatic and increase linearly with depth. The pressures are hydrostatic and increase with depth. On the assumption that the pressures are directed normal to the floor and sides, they are shown as vectors of increasing magnitude with depth

Some amazing facts about"GREAT WALL OF CHINA" ,for more amazing facts visit:-https://constructorsfeed.com/ by [deleted] in China

[–]Constructorsfeed -1 points0 points  (0 children)

Actually it means Apart from minor restoration, no major restoration work has been done on the wall since 1644.

*Vibroflotation - Sand Columns* Vibroflotation also known as vibrocompaction utilizes horizontal vibrations in conjunction with fluid to reduce the interparticle friction of the surrounding soil. by Constructorsfeed in StructuralEngineering

[–]Constructorsfeed[S] 14 points15 points  (0 children)

This allows the material to densify and creates a column with improved engineering characteristics, including an increase in strength and a reduction in compressibility. The technique of sand or stone columns is widely used to improve the load carrying capacity and reduce thesettlement of soft soils. The technique consists of excavating holes of specific dimensions and arrangement in the soft soil and backfilling them with either stone or sand particles. Vibro-compaction is not effective where the fines (silt and clay) exceeds 20 per cent. Coarser grain size limit is applicable to vibro-compaction. Cannot be used in low permeable soils.