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a variety of foundations first to review the raft foundations. The base plate is essentially a large concrete slab designed to cover the entire area or a part of the scene. It is used with soft or weak soils natural or made-up ground (charged), or land prone to subsidence as mining areas, or in close column bases are located close to touch or overlap, such as when the seventy -five percent of site may be covered. Although a basic disk using poor soil can not be used in Jamaica beach homes require much more stable foundation.
Types of Raft
Solid raft is a solid two-way reinforced concrete slab. Photo small rafts used for load-bearing-type buildings or light-framed constructions with low bearing pressure. The heavier and larger building thicker and deeper raft used.
Beam and slab raft slab which is directly above the ground beans ribs project. This is useful if you load or stiffness of the floor needs require thicker than three hundred millimeters. This was experimenting with some beachfront property for sale in Jamaica, but the concept quickly rejected.
Cellular Raft consists of upper and lower sheets (raft) and intermediate beam forming an edge in both directions hollow cells. This is useful when high and low beams (nine hundred millimeters) need raft stresses the need for greater rigidity.
Sometimes, the depth can be full basement floors or concrete floors using cross-sectional walls, monolithic, floor and rafts.
piling Foundations
Pile foundations those long column bed by transmit load deeper into the soil They are suitable for low soil bearing capacity, where the ground water level high, where the presence of clays or other shrinkable material close to the surface, which is capable of movement. This is what I used most of the beachfront property in Jamaica.
Types of piles
Friction piles transmit the load friction between by the surrounding soil in the pile surfaces and the friction between the soil, that is supported by the piles of soil and the pile. End piles carry load on weak layers down to a firm bearing strata below.
used the area under Short Drilled piles relatively short stack of solid clay as a means of shrinking the base of throwing moisture movement. It is usually compared to a large diameter (three hundred millimeters) in short lengths, so no steel reinforcement is usually necessary and rigid.
factors that determine the breadth and depth of Foundations
The width and depth of the foundation changes in
o Character subsoil
o weight wall and the load that it carries
o the nature and strength of the materials used in the design of foundations; and
while he expected to conduct load on the ground on which the foundations rest of
Concrete Foundations
The strength of concrete is influenced by many factors:
1. the proportion and type of cement
type 2, rates, classification and quality of aggregates
3. Water content
method 4 precision dispensing, mixing, transporting, placing, compacting and curing concrete.
most ordinary cement concrete foundations contain, although this can be changed in special circumstances. The usual standard mix of 1: 2: 4
Foundation Selection factors
o Soil conditions
o type of structure
o structural load economics founding type
o time is for the construction
o the life of the building
o Future use of the building
Settlement
movement of the vertical downward performance of the compressible foundation soil.
causes the settlement
first consolidation of soil particles
2. The reduction in the moisture content of soil from drying shrinkage
3. The general movement of the earth due to various reasons
4. overloading of soil
the foundation of the most fundamental aspects of Jamaica beach homes, as no matter how good the design is, it will not occur if the foundation is weak.
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Source by Colin Scott