Suspended Timber Ground Floor Construction Details

At the turn of the 18th century, when construction techniques moved from boarded floors installed directly on the ground to suspended timber floors over a ventilated chamber, the innovation solved a significant problem.

Suspended timber ground floor construction details. Today, nearly all new houses employ beam and block construction for their ground floors. The suspended floor does not rely on support from the ground below but instead is supported by the external walls, and. It is possible to create a suspended floor of any size using sleeper walls to bridge the span.

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. Strip Foundation and Ground Floor Construction Detail - Duration:. RIW/TD/304 DPM RED/DPM BLUE:.

Construction Studies drawing detail of suspended timber floor. Floor joists are typically 2 by 8s, 2 by 10s, or 2 by 12s;. Insulation above slab.

TIMBER SUSPENDED FLOOR Ground preparation - Remove top soil and vegetation, apply total weed killer and 150mm min thick sand blinded hardcore, then either – (i) Provide concrete ground cover of at least 100mm thick or (ii) Prepare the ground to an even surface and lay a ground cover of concrete at least 50mm thick, on. The style is open to lots of adjustment, and is flexible enough to suit nearly all flooring needs. A typical wood-frame floor covered with carpet or vinyl flooring has a dead load of about 8 pounds per square foot;.

E6 Intermediate floor within a dwelling;. Many houses had ground floors constructed with stone or clay flags;. Insulating and draught-proofing an old suspended timber floor at ground or upper storey level above unheated spaces can save considerable energy.

Ground bearing and suspended. To improving comfort and reducing fuel bills and carbon emissions. Floor Detail Drawings (Includes Jpeg, DXF and DWG cad via Download) A selection of floor detail drawings including block and beam floors, timber suspended floors, solid ground floors and upgrade floor details.

It has simply the best construction way for sloping sites, low-lying areas or sites with bad climatically conditions. 3.12 Timber Frame – Timber suspended ground floor. Accredited Construction Details Quinn Building Products Junction Designs to combat Thermal Bridging Thermal bridging is a much talked about but little understood phenomenon in building design.

A suspended timber floor is usually constructed using timber joists suspended from bearing walls, which are then covered with either floorboards or some other for of boarding material. 18mm external render 100mm block outer leaf 50mm cavity 100mm insulation 100mm block inner leaf 15mm internal plaster 1. CLICK HERE for Floor/Wall Combinations.

5.1.18 Laying the ground-bearing floor slab;. Refer to the relevant Combination Table to ensure compatibility. Ground Floor - Insulation above slab.

Suspended timber ground floor insulation APPLICATION OVERVIEW Insulation is placed between the joists and supported on netting (e.g. Whilst the edging insulation may be on show, it is covered by wall plastering and skirting boards. However, the floor structure is supported by external and internal walls.

Basements too were covered with flags. 150mm Concrete Subfloor 5. Suspended Timber Ground Floor Cavity Wall:.

If there's wall-board covered ceiling suspended from the underside of that floor, the dead load increases to about 10 pounds per square foot. Previously, floor timbers had been prone to damp and rot thanks to their direct contact with the moist ground. 6.3.10 Construction of steel framed partitions;.

The ground should have a layer of concrete poured across and there should be a ventilated gap of at least 150mm between the underside of the timbers and the concrete, to prevent moisture gathering and affecting the condition of the joists. In most cases, the variations will be determined by the load-bearing requirements and the design, but must adhere to the requirements outlined in the Australian Standard AS 1684 - Residential timber-framed construction. With timber flooring systems employing a concrete solum, this is provided by means of air bricks built at intervals and sleeved through the external cavity wall.

5.1.17 Ground floor slab and concrete;. • Before the timber floor boards are interlocked, apply a continuous bead of waterproof wood grade PVA adhesive to the top and bottom of the tongue and groove joints. Timber boarding on timber frame 1.9.

Download this free CAD drawing of suspended wooden floor details for use in construction design CAD drawings. Intermediate floor – Joist parallel 4.3. A concrete slab (or suspended beam and block construction) is laid over a damp proof membrane.

These can be classed as either Suspended or Solid. Polypropylene) or timber battens. A mm thick piece of insulation is fixed to the perimeter (external) walls, to a height to include the depth of floor insulation and screed.

Details from the same construction group should be selected. Wall-ground floor junction Scottish Building Standards:. GEO-VENT & GROUND LEVEL VENT BOX.

Suspended timber floor As a requirement of the Building Regulations the structure should be protected against the growth of weeds and other plant-life. How a Suspended Timber Floor is Constructed. A floor’s framework is made up mostly of wooden joists that run parallel to one another at regular intervals.

Beam and block or suspended concrete systems, allow the oversite to remain as compacted subsoil, and cranked ventilators are used. A suspended timber floor is constructed as a timber platform of boards nailed across timber joists supported on sleeper walls, and the external and internal load bearing walls surrounding them. REINFORCED CONCRETE AND STEEL FRAME.

Some newer homes have manufactured, I beam–shaped joists. Insulating and draught-proofing floors can make an important contribution. CE 0 Details of Construction.

Construction Details Construction Details. This is a floor where the timber floorboards are attached to floor joists and the insulation suspended on timber battens between the joists. 6.3.9 Construction of timber partitions;.

Ensure block with a maximum. 225mm Tassel Wall 6. Insulation above slab, with timber floor finish Keep cavities clean of mortar snots and other debris during construction.

Detail applicable:- Ground-bearing floor;. 100 x 75 Wallplate 8. GRoUnD FLooR ConstRUCtIon oVeRVIeW 4 GRoUnD FLooR sUPPoRtInG sYsteMs FoR FLooR FRAMes 4 ACCess FoR sUB-FLooR InsPeCtIon 12 te RMI te s HI e LD s 13 sUsPenDeD tIMBeR FLooR sYsteM 15 t H e FL oo RI n G 25 sUsPenDeD ReInFoRCeD ConCRete 42 sUsPenDeD DeeP JoIst I-BeAM FLooR FRAMes 43 sPeCIAL JoIst AnD BeAM sYsteMs 44.

Suspended timber with underlay and carpet, cavity (300 mm) to ground (clay to 500 mm). Linking details to other products. TIMBER FRAME WALLS AND FLOORS.

In-situ suspended ground floor slab;. 3 Ground Floors Early Timber Floors. Most houses at the end of the Victorian period (1900) were built with suspended ground floors.

Concrete vs Timber Floors. TIMBER FRAME STANDARD DETAILS SEPTEMBER 09 Building 1 Grosvenor Court, Hipley Street OLD WOKING, SURREY. Government Accredited Details Developed by BRE for local government.

Suspended timber ground floors can be a source of considerable heat loss from. Older buildings, particularly where there are gaps between floorboards that create. CLICK HERE for Floor/Wall Combinations.

This floor insulation method is commonly used for upgrading the thermal performance of existing timber floors as it has no impact on floor levels. This chapter gives guidance on meeting the Technical Requirements for suspended ground floors including those constructed from:. We look at this more thoroughly in our air bricks and air vents project , but quite simply if air bricks become blocked with debris or ground levels are raised this cuts off the air flow and water leaks may.

The joists are typically laid across the shortest span. FLOOR CONSTRUCTION Concrete or Timber Floor?. Moisture Management for Suspended Timber Floor Construction.

Render on timber frame 2. • Once the timber floor boards have been laid, temporary wedges should be inserted between the walls and the floor, to maintain tight joints, until the adhesive has set. There are three key things that need to be considered when constructing or renovating a timber floor:.

That leaves an opening to improve moisture management and airtightness – by fitting a Tyvek® membrane and carefully sealing the gaps and joints. Thermal bridges can account for 35-50% of overall fabric …. There are 2 types of floor construction used in construction today;.

The dead load on a floor is determined by the materials used in the floor's construction. Provision should be made to prevent ground moisture affecting timber floor construction. Ceiling joists are usually 2 by 6s or sometimes 2 by 4s if it is an older home.

It is more cost effective in residential areas. For spans in excess of 4.5 m two rows of strutting will be required, positioned at the one third and two third span positions. A suspended floor is a ground floor with a void underneath the structure.

Supports underneath the floor are permanent and include sleeper walls or timber props placed at regular intervals. There are, broadly, two common types of Flooring:. Suspended Timber Ground Floors consist of the finished timber floorboards being attached to floor joists, which are suspended above the subfloor of the foundation.

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. 3.10 - Ground bearing floor slab:. There are 2 types of floor construction used in the building industry today;.

The span that can be achieved is determined by the size of the timber joist used. For slab-on-ground floors it provides an understanding of the footing/slab selection, design, detailing and construction requirements contained in AS 2870 and. Suspended timber floors need to have spaces underneath ventilated via air 'bricks' through the outer walls and gaps in any internal walls so that the air can move across the building underneath the floors to prevent the build up of moisture in the timber which could lead to fungal attack.

These were laid on a bed of ashes or directly onto compacted earth. Suspended Floors, and ;. A suspended timber floor is the chosen way for many builders and consumers because of the following facts:.

Suspended Timber Floor Detail - Duration:. Beam and Block Ground Floors — The Most Popular Option Suspended concrete flooring systems were originally developed as a means of overcoming ground problems such as unstable sloping sites, where it made sense to bridge deep gaps rather than fill them. There were exceptions to this.

The importance of considering the type of occupants and their corresponding occupancy profiles as well as the dwelling construction details when choosing the most appropriate interventions. Ground floor main house:. 50mm concrete or 50mm fine aggregate on a polyethylene membrane laid on 50mm sand blinding, or ;.

The Accredited Construction Details document, which comprises of this section and five other parts, is produced to assist designers, verifiers and site operatives in the. 1050 x 350 Reinforced Concrete Strip Foundation 2. Ventilation must be provided throughout the underfloor void and through any sleeper walls with cross ventilation.

All suspended ground flooring systems must be ventilated. There are two types of concrete floor system commonly used in residential construction;. A typical suspended floor is shown below in Fig 1 with the joists resting on sleeper walls at right angles.

Tile hanging off timber frame 1.8. This can be achieved by either:. CLICK HERE for Floor/Wall Combinations.

RIW/TD/153 Typical detail at top of internal retaining wall with suspended floor. Many suspended timber floor constructions have discontinuous insulation between the joists. Many buildings with suspended timber floor suffer from rot and insect attack in the ground floor timbers due to poor sub floor ventilation.

Thermal bridges occur at all junctions in the building, as well as when penetrations of the thermal insulation envelope occur. RIW/TD/303 SLAB EDGE DETAIL :. In Scotland, the deemed-to-satisfy specification of the statutory regulations should be followed.

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. Concrete slab-on-ground floor systems and suspended floors suitable for residential buildings ranging from single, detached houses to medium density buildings of apartments and flats. The floor can be formed in various ways, using timber joists, precast concrete panels, block and beam system or cast in-situ with reinforced concrete.

These can be classed as either Suspended or Solid. In this blog post we aim to provide a simple, practical guide to the best practice methods for fitting insulation boards, such as Kingspan Kooltherm K103 Floorboard, into a suspended timber floor. E13 Gable (insulation at rafter level) Sill;.

Why Use Suspended Timber Floor. In this article we will be focusing on the suspended concrete floor, particularly beam and block floors. A wallplate is then attached to the top of the tassel walls, on which the floor joists rest on.

The simplest way of insulating suspended timber ground floors is to fit insulation boards between the joists and support battens. RIW/TD/801 Typical ground bearing slab detail:. 150mm min Hardcore 3.

For spans of between 2.5 and 4.5 m one row of strutting is needed, at the mid span position. E18 P1 Party wall between;. Pre-cast suspended ground floor.