Flooring Systems

Domestic Ground and First Floors

 Load / Span Charts for 155mm deep beams at varying centres
With 100mm thick blocks (max density = 1900 kg/m3)
 1900 kg/m3 infill, 65mm screedSIL (Superimposed loads) kN/m2 
 Floor Self Weight
(kN/m2)
 1.52
 2.5 34
 5
Condition No. A Beams
at 520c/c
2.244.1503.9753.8003.6003.1002.725
Condition No. B Beams at 295c/c 2.535.3505.1504.9504.7754.4504.225
Condition No. C Beams at 520 & 295c/c*  (equiv. to 408c/c)2.354.6504.4504.2754.1003.8503.425
Condition No. D Double Beams at 648c/c (equiv. to 324c/c)2.515.1504.9254.7254.5754.2754.025
Condition No. E Double Beams at 422c/c (equiv. to 211c/c)2.865.9005.8505.7005.5005.1754.900
Condition No. F Beams
 at 127c/c
3.605.9005.9005.9005.9005.9005.900
 Load / Span Charts for 155mm deep beams at varying centres
With 100mm thick blocks (max density = 650 kg/m3)
 650 kg/m3 infill, 65mm screedSIL (Superimposed loads) kN/m2 
 Floor Self Weight
(kN/m2)
 1.52
 2.5 34
 5
Condition No. A Beams
at 520c/c
1.214.6254.3754.1753.9753.5253.050
Condition No. B Beams at 295c/c1.645.8255.5755.3255.1004.7254.425
Condition No. C Beams at 520 & 295c/c*  (equiv. to 408c/c)1.365.1504.8754.6504.4504.1003.825
Condition No. D Double Beams at 648c/c (equiv. to 324c/c)1.685.5755.3005.0754.8504.5004.225
Condition No. E Double Beams at 422c/c (equiv. to 211c/c)2.235.9005.9005.9005.7505.3755.075
Condition No. F Beams
 at 127c/c
3.605.9005.9005.9005.9005.9005.900

Commercial Ground and First Floors

 Load / Span Charts for 225mm deep beams at varying centres
With 100mm thick blocks (max density = 1900 kg/m3)
 1900 kg/m3 infill, 65mm screedSIL (Superimposed loads) kN/m2 
 Floor Self Weight
(kN/m2)
 1.52
 2.5 34
 5
Condition No. 1 Beams
at 540crs
2.746.2005.9505.7255.5255.1754.900
Condition No. 2 Beams at 315c/c3.377.4507.2757.1256.9506.5256.200
Condition No. 3 Beams at 540 & 315c/c*  (equiv. to 428c/c)2.986.8256.5506.3256.1005.7505.425
Condition No. 4 Double Beams at 692c/c (equiv. to 346c/c)3.277.3007.1256.9506.7256.3255.975
Condition No. 5 Double Beams at 468c/c (equiv. to 234c/c)3.967.9007.8507.7007.5257.2757.050
Condition No. 6 Beams
 at 152c/c
5.167.9007.9007.9007.9007.9007.700
 Load / Span Charts for 225mm deep beams at varying centres
With 100mm thick blocks (max density = 650 kg/m3)
 650 kg/m3 infill, 65mm screedSIL (Superimposed loads) kN/m2 
 Floor Self Weight
(kN/m2)
 1.52
 2.5 34
 5
Condition No. 1 Beams
at 540crs
1.756.8006.4756.2005.9505.5255.175
Condition No. 2 Beams at 315c/c2.547.8007.5757.4007.2256.8756.475
Condition No. 3 Beams at 540 & 315c/c*  (equiv. to 428c/c)2.047.3007.0756.8006.5256.0755.725
Condition No. 4 Double Beams at 692c/c (equiv. to 346c/c)2.507.6257.4257.2257.0756.6256.225
Condition No. 5 Double Beams at 468c/c (equiv. to 234c/c)3.397.9007.9007.8757.7007.4257.175
Condition No. 6 Beams
 at 152c/c
5.167.9007.9007.9007.9007.9007.700

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