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Split Slabs


Commercial Solutions - Split Slabs


Insulated Slab
A split floor slab incorporates insulation into the slab yet retains concrete on
each surface to meet the requirements for non- combustibility. This construction
is suited for open parking under elevated buildings, entrance areas,cantilevered
constructions, etc. The structural slab is poured in the normal manner and if
necessary can be constructed to meet the fire rating required for the floor.
Plasti-Fab PlastiSpan insulation is placed on the floor slab and a covering slab is
poured over the insulation. The covering slab is normally reinforced to eliminate
shrinkage cracks but does not contribute to the structural capacity of the slab
and can be of minimum compressive strength concrete or sand - cement
mixture. PlastiSpan insulation resists the absorption of moisture and is not
affected by direct contact with the wet concrete. Care should be taken with
concrete vibrators as the boards will float up if the wet concrete is forced under
them.

Isolated Slab (for sound absorption)
Sound transmission through construction material is reduced by high mass
materials that are capable of absorbing the sound energy. The sound will,
however pass through a massive member unless it is isolated. PlastiSpan
insulation is an excellent isolator because of its light density that prevents the
transmission of sound from one structural component to Sound Insulation
Concret Finish another. Relatively thin thickness of insulation 25 mm (1”) is
adequate. It is critical that there is complete isolation of the structural
components, no concrete fins through the insulation, no metal connectors,
or structural members passing through the sound isolation material. The
covering slab may be of concrete, particle board or plywood.
Product Selections for this application:
PlastiSpan PlastiSpan HD


Read the Brochure
Split Floor Slabs

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SI VALUES ("RSI")
  PLASTISPAN RIGID INSULATION THICKNESS
TOTAL CONCRETE
THICKNESS
NONE 40 mm 50 mm 75 mm 100 mm 125 mm
125 mm 0.21 1.25 1.51 2.16 2.80 3.45
150 mm 0.22 1.26 1.52 2.17 2.81 3.46
200 mm 0.25 1.29 1.55 2.20 2.84 3.49
*Add RSI 0.26 for every 10 mm of PlastiSpan Rigid Insulation over 125mm


SI VALUES ("RSI")
  PLASTISPAN HD RIGID INSULATION THICKNESS
TOTAL CONCRETE
THICKNESS
NONE 40 mm 50 mm 75 mm 100 mm 125 mm
125 mm 0.21 1.33 1.61 2.31 3.01 3.70
150 mm 0.22 1.34 1.62 2.32 3.02 3.71
200 mm 0.25 1.37 1.65 2.35 3.05 3.74
*Add RSI 0.28 for every 10 mm of PlastiSpan HD Rigid Insulation over 125mm


IMPERIAL VALUES ("R")
  PLASTISPAN RIGID INSULATION THICKNESS
TOTAL CONCRETE
THICKNESS
NONE 1.5" 2" 3" 4" 5"
5" 1.18 6.80 8.68 2.31 3.01 3.70
6" 1.26 6.88 8.76 2.32 3.02 3.71
8" 1.42 7.04 8.92 2.35 3.05 3.74
*Add R 3.75 for every 1" of PlastiSpan Rigid Insulation over 5"


IMPERIAL VALUES ("R")
  PLASTISPAN HD RIGID INSULATION THICKNESS
TOTAL CONCRETE
THICKNESS
NONE 1.5" 2" 3" 4" 5"
5" 1.18 7.24 9.26 13.30 17.34 21.38
6" 1.26 7.32 9.34 13.38 17.42 21.46
8" 1.42 7.48 9.50 13.54 17.58 21.62
*Add R 4.04 for every 1" of PlastiSpan HD Rigid Insulation over 5"