A required minimum floor
mass of 180 kg/m2 can be exceeded by using Stowell
hollowcore 155mm deep HC260 concrete planks (five hole).
When grouted a floor mass of approximately 280kg/m2
is obtained before adding toppings, floors and ceilings.
D4
• precast
concrete plank
Structural
floor –
Stowell hollowcore HC300 concrete plank
Regulating screed optional (not shown)
A required minimum floor
mass of 180 kg/m2 can be
exceeded by using Stowell hollowcore 155mm deep HC300
concrete planks (three hole). When grouted a floor
mass of approximately 320kg/m2 is
obtained before adding toppings, floors and ceilings.
Stowell Concrete reserve the right to supply HC300 if stock of HC260 is not available
Part E (resistance to passage
of sound) of the Building Regulations (England and Wales)
Section 5: Internal walls and floors for new buildings,
requires a minimum floor mass per unit area. For joist*
and block the floor mass is 220kg/m2 and for hollowcore
concrete planks the requirement is a minimum 180kg/m2.
To satisfy Part E (Resistance to passage of sound) of
Building Regulations, England & Wales Section 5:
Internal walls and floors for new buildings, both the
regulating screed and ceiling finish are optional.
However, to achieve larger spans, a reinforced structural
concrete topping needs to be bonded to the units. Please
see the load span tables below and guidelines for
structural concrete topping applied to reinforced concrete
flooring.
* commonly known as beam
All products are
available ex works.
Prices on application.
Telephone our sales office for further information
and quotations.
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Domestic
floor utilising timber & batten only
HC260/HC300
Loadings
in kN/m2
Imposed
live load
1.5
2.0
2.5
Partition
allowance
0.5
0.5
1.0
Finishes
& ceilings
0.3
0.3
0.3
Max
clear span in metres
8mm
reinforced type A
4.15
4.05
3.80
10mm
reinforced type B
4.40
4.30
4.05
12mm
reinforced type C
4.55
4.45
4.20
16mm
reinforced type D
4.70
4.55
4.35
155mm deep
Stowell HC260 (shown) or Stowell HC300
Joints
must be kept clean until concrete is poured
Domestic
floor utilising screed
HC260/HC300
Loadings
in kN/m2
Imposed
live load
1.5
2.0
2.5
Partition
allowance
0.5
0.5
1.0
Finishes
& ceilings
0.3
0.3
0.3
Max
clear span in metres
8mm
reinforced type A
3.80
3.75
3.55
10mm
reinforced type B
4.10
4.00
3.80
12mm
reinforced type C
4.25
4.15
4.00
16mm
reinforced type D
4.40
4.30
4.15
65mm screed
155mm
deep Stowell HC260 (shown) or Stowell HC300
Joints
must be kept clean until concrete is poured
Domestic
floor utilising structural concrete bonded to Stowell
hollowcore and propped*
HC260/HC300
Loadings
in kN/m2
Imposed
live load
1.5
2.0
2.5
Partition
allowance
0.5
0.5
1.0
Finishes
& ceilings
0.3
0.3
0.3
Max
clear span in metres
8mm
reinforced type A
5.40
5.30
5.05
10mm
reinforced type B
6.00
5.85
5.60
12mm
reinforced type C
6.40
6.25
6.00
16mm
reinforced type D
6.80
6.65
6.45
min
70mm
concrete C28/35
max 10mm aggregate
S3 + A142 mesh
Joints
must be
kept clean until concrete is
poured
155mm deep Stowell
HC260
(shown) or Stowell HC300
These tables refer to simple,
uniformly distributed loads only and is only a guide.
*Please see guidelines for stuctural concrete topping applied
to reinforced precast concrete flooring.
