Finishes and decking to precast concrete suspended ground floors shall be suitable for their intended use Details of finishes and decking are given in Chapter 64 'Timber and concrete upper floors' and Chapter 'Floor finishes' (each section) Timber deck finish can also be used – if this is specified a vapour control layer must be included in the design under the timber deck A void is left under the floor of at least 150mm between the soil and underside of the beam If heavy clay soil is present it is good practice to increase the void depth to as much as 225mm or possibly more • 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 • 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
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Suspended timber floor section
Suspended timber floor section-This section gives examples of typical junctions and calculated psi values for timber frame construction Version Date Notes 10 October 10 Initial issue of comprehensively updated document, in support of the 10 Ground floor / separating wall junction – timber suspended floorTo get the timber suspended floor to act as a screeded floor and to give out more heat, the air gap between the insulation and the floor boards should be filled with a lightweight screed mix The infill is normally 101 sand/cement mix at a height of 25 mm
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Suspended Timber Floor Suspended Timber Floor Specific applications Specific applications Stockists ;Guidance Diagram 10 Typical section through a suspended reinforced insitu concrete ground floor slab supported on internal walls Suspended beam and block ground floors Guidance Diagram 11 Typical section through a suspended beam and block ground floor Guidance Table 6 Examples of insulation for suspended beam and block ground floorsDifferent types of ground floor suspended flooring 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
Suspended timber floors must Ensure the ground is covered so as to resist moisture and prevent plant growth Have a ventilated air space between he ground covering and the timber Have a damp proof course between the timber and any material which can carry moisture from the groundGRoUnD FLooR sUPPoRtInG sYsteMs FoR FLooR FRAMes 4 ACCess FoR sUBFLooR 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 IBeAM FLooR FRAMes 43 sPeCIAL JoIst AnD BeAM sYsteMs 44 CALCULAtIon oF sUBFLooR MeMBeRs 46 BeAReR AnD JoIst QUAntItIes 50Timber is the most common form of suspended floor and can be either of the following • Cutin floors in which the floor is fixed in position after the walls are erected In double brick buildings all timber floors are cut in • Platform floors in which the floor
Constructing a floor ,installing insulation and laying 18mm chip board tongue and groove Any questions fire away I always answer Music by Joakim Karud DreamsSuspended floors Comprehensive information on the latter was at that time provided in the Association's companion publication Guide to Suspended Concrete Floors for Houses timber section into the ground to a specific depth or until a certain level of resistance is reached Timber floor 1 TIMBER FLOORINGAsst Prof Amruta KhairnarVPSOA 2 T ypes of floors 1 2 Timber floor Composite floor 3 T imber flooring • Basement or Ground floor of timber Section on ab Joist Wedges Floor boards 300 – 400 mm Herring bone strutting 9 D o u b l e j o i s t t i m b e r f l o o rs 3 18m to 24m36 to 75m 300mm
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A suspended floor is a ground floor with a void underneath the structure The floor can be formed in various ways, using timber joists, precast concrete panels, block and beam system or cast insitu with reinforced concrete However, the floor structure is supported by external and internal walls Supports underneath the floor are permanent and include sleeper walls or timber Suspended timber floors, which are typically found in older houses, are normally made from timber floorboards which are then attached to joists just above the foundations of a house This creates a small gap and allows ventilation and air movement to prevent damp forming in the timber joists If it is tiles you are after and have a suspended timber floor then you can simply take up the boards and screw plyboard to the existing floor joists to get a nice level floor to tile on In the case of parquet flooring, sanding and finishing can be carried out fairly easily If sections are badly damaged or loose, they can be taken up and
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Concrete slab floors are typically insulated with polystyrene board For information about performance, durability and environmental properties of each material, see our insulation materials factsheet(PDF) and the materials section of this site Insulating suspended timber floors Insulate suspended timber ground floors using glasswool71 Strandfloor® may be used as prelaid or postlaid flooring for suspended timber floors designed to Section 7 of NZS 3604, and as a flooring overlay to concrete slabonground floors and suspended concrete or timber floors 72 When flooring is prelaid, care must be taken in the planning and construction stages to ensure The last step before tiling a wooden floor is to apply an even coat of diluted SBR primer and allow it to dry This will create the perfect grippy surface for your tiling adhesive to stick to Floor tile installation Once your boarding is all in place, you should have a smooth, firm and flat surface for laying your tiles over floorboards This
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All ground floor constructions, unless very large commercial floors, will require some insulation to be included within the floor zone to comply with Building Regulation requirements If the ground floor in question is of a suspended timber construction, and whether this is a renovation or newbuild project, then the insulation would normallyThis chapter gives guidance on meeting the Technical Requirements for suspended ground floors including those constructed from insitu concrete precast concrete timber joists 521 Compliance 522 Provision of information 523 ContaminantsTile hanging off timber frame 18 Timber boarding on timber frame 19 371 Rafters on floor deck 372 Rafters on dwarf wall 38 Roof panels 381 Roof panel connections 39 Flat roof – Joist and decking 310 Dormer in Section 311 Dormer in Perspective view 312 Parapet detail – joists perpendicular 313 Parapet detail
Floor Construction Sections Suspended Timber On The Level
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Suspended concrete floor This construction is similar to the timber floor above, but uses either precast concrete planks or small precast concrete beams with concrete blocks laid between the beams They can normally span greater distances than timber joists Ventilation is required in the same way as a suspended timber floorSuspended floor with timber boards and joists Suspended floor comprising 175 mm timber joists and 18 mm timber boards To embed this BIM object onto your website, simply copy and paste the HTML code below Contact a technical consultant at NBS to find out more about Suspended floor with timber boards and joistsSuspended floor systems There really is no need to either fit radiators upstairs or lay screed to install an underfloor heating system At Continal®, we have systems that will fit on top of a timber deck, systems that act as the structural timber deck in place of plywood or chipboard, systems that fit between the joists, and even a system that you can fit from below
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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 of the tassel walls, on which the floor joists rest onSubfloor ventilation Many traditional properties are built with a suspended wooden floor which sits above a void air space between the perimeter walls and groundIf this space is not ventilated, the air in it becomes stagnant and humid, and the moisture within it begins to condense on the brickwork and flooringAnimated Building Section Details 1 of 21 Strip Foundation & Concrete Ground Floor 2 of 21 Suspended Timber Ground Floor 3 of 21 Linked Floor 4 of 21 Concrete Ground Floor – Timber Frame Wall 5 of 21 Window Cill – Concrete Cavity Wall 6 of 21 Window Cill – Timber
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although i dont like concrete floors, in your case a slab floor will possibly be a lot cheaper than a suspended floor but price will depend on a number of factors you will need a min of 150mm space below your suspended floor joists, & venting or air bricks at the rear elevation you will also need a min of three air bricks at the front elevaton suspended timber floors located above an unheated space, where the insulation is installed below the floorboards or timber decking timber floors situated above an unheated integral garage, unheatedA method of constructing a suspended floor is described in which a plurality of beamforming formwork assemblies are located in substantially parallel alignment, the beamforming formwork assemblies are supported in support assemblies on a support base in stable equilibrium, a plurality of floorforming formwork assemblies are located between the beamforming formwork
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9 Uvalues for floors 39 Slabonground floor (groundbearing floor slabs) 39 Suspended floors 42 921 Suspended timber floor 43 922 Suspended beamandblock floor 43 923 Concrete beam floor with polystyrene layers 43 924 Solid suspended floor – precast concrete planks 43FireRated WoodFrame Wall and Floor/Ceiling Assemblies Building Code Requirements For occupancies such as stores, apartments, offices, and other commercial and industrial uses, building codes commonly require floor/ceiling and wall assemblies to be fireresistance rated in accordance with standard fire tests Suspended concrete floor The construction of suspended concrete floors is similar to that of timber but can span greater distances, and offerings better sound insulation properties A simple reinforced concrete flat slab is not usually economical as a suspended floor spanning over 5 m
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The recommended minimum area of ventilation required for under a suspended timber floor is 1500mm 2 for every metre of perimeter of the structure Cross flow ventilation was traditionally achieved by placing sleeper walls (see figure 2) at intervals throughout the subfloor The sleeper walls would be honeycombed in nature to facilitate airflow to any joist spanning more than 25 m and with a depth of four or more times its thickness This means any floor joist 190 × 45 mm or greater will require blocking when it has a clear span of more than 25 m Often, all the joists for suspended floors will be sized to accommodate the largest spansWhere existing suspended timber floor air bricks are covered by new extension, ensure cross ventilation is maintained by connecting to 100mm dia upvc pipes with 100mm concrete cover laid under the extension Pipes to terminate at new 65mm x 215mm air bricks with cavity tray over However, the site makes it easy to choose your specification
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You are Selfbuilder All the press articles dedicated to ACTIS can be found in this section, as well as press releases and press kits, web articles, radio podcasts and videos of TV shows Testimonials TestimonialsTable 2 – Separating floors VFT1™ timber ijoists and floating floor treatment VFT2™ timber solid joists and floating floor treatment VFS1™ steel deck and insitu concrete and floating floor treatment List of Robust Details™ IdciA 13 S_IdciN05 1233 Page 3The main driver for installing suspended timber floor insulation will be to improve thermal performance To plan what thickness of insulation you'll need for a suspended timber floor you must calculate its UValue In England and Wales building regulations suggest the floor should achieve a UValue of 025 W/m2K or less, if possible
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BRE Ψvalue (W/mK) BRE Temp factor (ƒ) 9 Suspended ground floor slab insulation below slab Wallground floor junction Scottish Building Standards MasonryApplication of Section 5 Domestic The diagram below summarises the areas of a building to Metal frame suspended ceiling with gypsum based board, minimum 10 kg/m2 (eg 125mm acoustic plasterboard) Timber floor solid joist Specification Achieves R wThis must incorporate either a clear void of a specified minimum depth under the suspended floor, or a proprietary compressible material/void former below the underside of the floor construction Further guidance can be found in the 'Foundations Trees and Clay' section Precast beam and block floors Site preparation
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A selection of floor detail drawings including block and beam floors, timber suspended floors, solid ground floors and upgrade floor details Drawings are directly downloadable in Jpeg (1600 by 10px), DXF and DWG (cad) formats Note The Detail
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