the adoption of concrete floor speeds the completion of the ground floor. precast flooring systems have the added advantage of reducing the amount of labour required on site. 5.
types of ground floors 1. types of ground floors 2. suspended ground floor-1890s joists supported on sleeper and external wall minimal ventilation rising damp no insulation 3. ventilation for a suspended floor terra cotta air brick through wall 4.
floor structure costs. of the common go-to options concrete, beam and block and suspended timber , concrete is the cheapest, and beam and block the most expensive. basic suspended timber is affordable, but i-joists and open metal web joists are more commonly chosen for their versatility which comes at an added cost.
suspended ground floors early forms. as mentioned above, the basic design principle for the early suspended floors was for timber joists to be raised above the ground normally being supported in some way by the external walls together with a series of sleeper walls or intermediate supports.
cement concrete floor: the floors whose topping consists of cement concrete is called cement concrete floor or conglomerate floor. these floors consists of 2.5 cm to 5cm thick concrete layer laid over 10 cm thick base concrete and 10 cm thick clean sand over ground whose compaction and consolidation is done. these floors are commonly used these days.
3 blocked external vents to ground floors - the void underneath a suspended floor must be ventilated to prevent a build-up of moisture, as excessive moisture can lead to low-level dampness in the walls and will eventually decay a suspended wooden floor.
plenum. plenums are air compartments or chambers, either above suspended ceilings, in the gap between the ceiling and the floor slab, or below raised floors in the gap between the raised floor and the floor slab. they form part of the ventilation system for the building . see: plenum for more information.
select page. there are 2 types of floor construction used in construction today; these can be classed as either suspended or solid. solid floors are a lot more substantial and require the ground to be made up in layers of ground sub base, sand, compacted hard core, damp proof membrane, insulation and concrete.
suspended timber floor. an intermediate wall with a small foundation may be needed to reduce the span and keep the thickness of the floor joists to a minimum. a damp proof course dpc should be placed between the timber and the wall. insulation is then placed between the joists thickness depends on the product used .
suspended timber ground floor - also known as hollow ground floor. it is constructed with joists and timber floor boards, or timber-based sheet material, e.g. chipboard flooring.
different types of ground floor suspended flooring. air bricks through the outer walls, facilitate air movement. in old properties 1910 to 1980 ish , air bricks were often fitted just in the outer brick skin with a brick left out in the inner skin, thus the air brick vented both under the floor and the wall cavity,
flat plate. the principal feature of the flat plate floor is a uniform or near-uniform thickness with a flat soffit which requires only simple formwork and is easy to construct. the floor allows great flexibility for locating horizontal services above a suspended ceiling or in a bulkhead.
suspended slabs are made of concrete and steel mesh, the same as a ground slab. they are normally pre-fabricated offsite, and transported by truck. some slabs have hollow channels running through them - these 'hollow core slabs' are used to help reduce weight, and also to allow cabling and piping to be run through the slab.
the risk is greatest with suspended ground floors. gaps and holes in the ground floor where pipes rise from voids below should be sealed against air leakage. hatches and covers giving access to services in suspended timber ground floors should be tight-fitting or draught-proofed to prevent air leakage figure 4 .
suspendedground floora ground floor need to be suspended under the following condition : a domestic buildings on sloping sites where more than 600mm depth of infill would be required b where the bearing capacity and nature of the ground different from one part to another c where the ground is shrinkable clay, expansive material or unstable soil type suspended floors / slab is fixed some
construction studies q1. suspended timber ground floors consist of the finished timber floorboards being attached to floor joists, which are suspended above the subfloor of the foundation. these floor joists are raised above the subfloor on small supporting walls called tassel walls or sleeper walls . a wallplate is then attached to the top
the range of steel based floor systems is presented in general terms, with the advantages and disadvantages of each system identified so that these can be compared against the requirements of a given project. the article does not go into technical detail about the different types of composite, long span, and shallow floor solutions.
suspended concrete flooring. speedfloor is a suspended concrete floor system using a cold formed steel joist as an integral part of the final concrete and steel composite floor. the joist is manufactured from pre-galvanised high strength steel in a one pass rollformer giving a high degree of accuracy at a fast production rate.
suspended timber ground floors consist of the finished timber floorboards being attached to floor joists, which are suspended above the subfloor of the foundation. these floor joists are raised above the subfloor on small supporting walls called tassel walls or sleeper walls .
there are 2 types of floor construction used in construction today; these can be classed as either suspended or solid. solid floors are a lot more substantial and require the ground to be made up in layers of ground sub base, sand, compacted hard core, damp proof membrane, insulation and concrete.
english heritage, in its guidance note energy efficiency and historic buildings: insulating solid ground floors, observes that the ground itself maintains a surprisingly stable temperature of around 10 c. for these reasons, earth floors are among the most sustainable forms of flooring, and there has been a revival of this type of floor
concrete floors can be constructed quickly. the adoption of concrete floor speeds the completion of the ground floor. precast flooring systems have the added advantage of reducing the amount of labour required on site. 5. damp resistance. concrete floor is nonabsorbent and hence offers sufficient resistance to dampness.
a suspended floor is a specialist construction made of a solid concrete floor, a system of sleeper walls and timber joists, upon which sits a supported timber floor. this type of floor allows home owners to run electrical wires and other such elements under the floor boards.
paul watts and gillian tesh. suspended timber floors appeared in the uk in the early 18th century. air flow was maintained between the ground and the timbers above by vents in the external walls, to ensure that the air did not become too damp.