SG655

Timber Flooring

ID
Title
Compliance Level
Expand All
1
General
Mandatory
Mandatory

As per current NATSPEC. 
 

2
Products
Mandatory
Mandatory

As per current NATSPEC except as follows: 

2.4 Cushion Parquet Flooring
 
GUIDE NOTE: Insert project specific locations.  Refer to the Educational Facilities Standards and Guidelines. 


Description
Type:  Cushion parquet (or wood mosaic)

Grade:  Select

Block size:

  • Length x breadth:  530 x 530 mm
  • Thickness:  9 mm

Block type:  Square dressed

Timber species: Spotted Gum or Blackbutt

Termite resistance
Requirement: Timber and plywood must be treated to prevent attack by termites.

3
Execution
Mandatory
Mandatory

As per current NATSPEC except as follows: 

3.5 Floor Fixing


GUIDE NOTE: Add the following subclauses to the NATSPEC Building Template / Worksection. 

General
One of the following alternative termite resistant timber species or preservative treatments against termite attack is to be used for framing of floors:

  • Naturally termite resistant hardwood timbers To 3660.1 Appendix C

Timber floor on slab

GUIDE NOTES:

Provide a fall of 1:200 to floor wastes in concrete slabs under timber floors (e.g.  sprung floor in school halls) to drain water
Provide sufficient ventilation to allow the drying out of moisture between top of slab and underside of timber floor. 
NOTE: masonite does not comply with BCA requirements


Sprung timber flooring system

GUIDE NOTE: Insert project specific locations.  Refer to the Educational Facilities Standards and Guidelines. 

  • Location                            
    >
  • Battens
    • Timber Species or Group: Termite resistant hardwood Australian>
    • Stress Grade (min):    F17
    • Seasoning:                 Seasoned or kiln dried to AS2082

  Size (w x d min.):        75 x 35mm

  • Spacing:                     300mm max. centres.
GUIDE NOTE:  Delete subclause "Vapour Barrier" nominated in NATSPEC, Building worksection and include the following. 

 

  • Vapour barrier: Provide a full vapour barrier on top of slab (between slab and resilient pads).  Vapour barrier to be of 0.15mm high impact resistant polythene. Lap 150 mm and seal the laps with pressure sensitive tape.  Do not commence fixing until the moisture content of the concrete slab is less than 6% when tested to AS 1884,  

       Appendix A.  Turn up vapour barrier at the perimeter of the flooring system.  Cut and tape to drainage outlets.

  • Joists installation
    • Laying: Lay on flat.
    • 900 to length of the main playing area
    • Join end to end with 6mm spacings
    • Stagger joints
    • Tolerance: 10mm minimum clearance between ends of joists and any walls or upstands.
    • Joist packing: Corrosion and termite-resistant non-compressible material.
  • Neoprene Pads: Proprietary neoprene pads with Durometer reading 60 +/- 5% and double staple fix pads to underside of joists.
    • Centres: 300mm maximum.
    • Size: 40 x 20mm (nominal) x 17mm (minimum) thick.
  • Plywood: Install plywood on top of joists (underside of strip flooring) and at 900 to joists.
    • Treated to prevent the attack of termites, insect, & fungal attack in accordance with AS/NZS 1604.3
    • To AS 2269
    • Bond: Type A
    • Grade: DD exterior grade
    • Stress grade: F11
    • Size: 2400 x 1200mm minimum
    • Thickness: 12mm
    • Stagger joints (masonry stretcher bond pattern).  Allow a 5mm spacing between sheets (all edges).
    • 20mm clearance between walls or upstands
    • Fixing: 300mm centres

 

Strip flooring

GUIDE NOTE: Spotted gum or Blackbutt species are the only timber species acceptable for use in schools where strip flooring is required. These species have natural termite resistance (To AS 3660. 1)
GUIDE NOTE: Insert project specific locations.  Refer to the Educational Facilities Standards and Guidelines and Supplements


Location                                          
>

  • Timber species or group:   >
  • Grade: Medium Feature Grade to AS 2796.2
  • Maximum Size: (w x t) (nominal sizes): 75 x 25mm
  • Expansion Joints:
    • Minimum10mm clear of walls or any upstands.
  • Consult with the installer/supplier of the strip flooring to determine the number of expansion joints required. The number of expansion joints depends on the variations in the equilibrium moisture content (EMC) of the floor in relationship to local humidity conditions.
  • Profile: Tongue and grooved, secret nailed or proprietary joining tongue, secret nailed

 

Evaporative cooler installations

GUIDE NOTE:In locations where evaporative cooling systems are to be installed or is installed timber flooring is not recommened.  The increased humidity levels and the fluctuations of the humidity may have an adverse effect on the timber.  Alternative ventilatioin, cooling or flooring materials should be considered.

If timber flooring must be used when an evaporative cooling system is going to be installed or is installed include the following floor schedule.

Requirement: Strip flooring installation in locations where an evaporative cooler is or is to be installed.

GUIDE NOTE: Spotted Gum or Blackbutt species are the only timber species acceptable for use in schools where strip flooring is required. These species have natural termite resistance (to AS 3660.1) 
GUIDE NOTE: Insert project specific locations.  Refer to the Educational Facilities Standards and Guidelines. 
GUIDE NOTE:  Generally additional expansion joints are required to allow for any unforseen movement due to increased fluctuations in humidity.
GUIDE NOTE: 14% to 19% - Average 16.5% humidity level generally created by evaporative cooling systems.  The timber flooring supplier/installer can arrange for the timber floorng to be kiln dried to the required moisture content.


Notify the timber-flooring supplier that an evaporative cooling system is or is going to be installed and that there will be an increased humidity level.

The timber must be certified on delivery by the supplier verifying the moisture content of the timber.

Immediately after the timber is delivered it must be strip stacked in its final environment for a minimum of several weeks with the evaporative cooling left on to allow the timber to achieve the desired EMC and stabilise prior to fixing.

Strip flooring installation
Flooring system: To AS 1684.

  • Lay in long lengths with accurate end matched joints, all joints on adjoining boards to be staggered.

Stage floor

Edge board to have at least 30% contrast in colour to stage floor colour.

GUIDE NOTE: Applies to the edge of stage or raised platform and their steps.
 

Skirting
Nominal 100 x 32mm thick (finished size) with splay top fixed all perimeter.

  • Fix skirting 12mm clear of floor for ventilation.
  • Same timber species as the selected flooring material.
  • Screw fix skirting to enable removal for service maintenance.
3.6 Completion
 

GUIDE NOTE: Add the following subclause to the NATSPEC Building Template / Worksection. 

Maintenance manual
Size (written instructions):  A4 (minimum)

Instructions:  Brief precise text with corresponding graphics.

Finish:  Laminated.

Location/Distribution:

  • Cleaning Supervisor/Supplies.
  • Cleaning Distributed Stores.
  • Hand one copy to the Principal’s Authorised Person / Principal’s Representative.
3.7 Security Enhancement
 
GUIDE NOTE: Only required for security "D" spaces with timber floors in existing buildings 


Requirement
Screw fix 3mm steel sheet to existing floor structure. 

4
Selections
Mandatory
Mandatory

As per current NATSPEC. 
 

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