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on September 24, 2014

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Technical Details | beam and block



The Benefits
  • Ease and speed of Installation.
  • Units can be placed in all weather conditions.
  • Immediate working platform.
  • Simple accommodation of site services.
  • All floor finishes can be applied.
  • Fire resistance of 0.5 for the 155mm House Beams and 1 hour for the 225mm Deep Beams
  • Factory produced to rigorous quality standards
Treanor Pujol Ltd manufactures a 155mm deep beam denominated House Beam and a 225mm deep beam denominated Deep Beam. These beams are made of prestressed concrete and have an inverted 'T' beams cross-section that enables them to be integrated into composite flooring systems. These beams are commonly used for housing, standard walling blocks are placed between them to form a beam and block floor.

The beams and blocks are easily handled and therefore quick and easy to install on site offering a low cost suspended floor solution. Under normal residential loading, the 155mm House Beam can span well over 6 metres while the 225mm Deep Beam can span upto 8 metres.

Prestressed Beams


Our beams are manufactured with C60 (60N/mm2 at 28 days) concrete, prestressed by means of 5mm indented steel wire to BS5896, having a minimum breaking load of 36.456 kN. Structural design is carried out by our design office in accordance with BS8110. The concrete cover to the reinforcement is such that a moderate exposure conditions as described in BS8110 are satisfied.

Treanor Pujol beams are fabricated on a 168 m long 1.2m wide steel beds by a slip-form process. Beams are slip-formed up to 10 beams at a time, within an enclosed factory environment guaranteeing the prestressed concrete material characteristics and the finished beam’s dimensional tolerance. Slip-form beams are designed to have a rough upper surface so that they can be fully integrated into composite floor.

The beams surface finish provides a good key for in-situ grouting and toppings.


Infill Blocks


Infill blocks are 100 mm thick, 440mm long and 215mm wide, and are manufactured in accordance with BS6073.

The blocks should have a compressive strength of 3.5N/mm2 or 7.0N/mm2 and be able to support a minimum transverse load of 3.5kN on a 420 mm span. Where blocks are built into load bearing walls the compressive strength must not be less than that of the blocks used in the wall construction. In the case of the design for garage floors, blocks with 7.0N/mm2 compressive strength should be used in conjunction with 75mm thick concrete screed reinforced with A142 mesh.

Normally the blocks have a density of 1325 Kg/m3 making each block weigh some 12.5 Kg, a comfortable weight for the installation process. In some residential design situations regulations require that a beam and block floor must weigh over 300 Kg/m2 in order to achieve the required sound resistance. In this case a more dense block maybe used, 1950 Kg/m3 in conjunction with the 155 mm House Beam.


Bearings


Floor beams supported by masonry walls require a minimum bearing of 80mm, normally the supporting wall is the inner leaf of cavity walls. Correct bearing onto internal 100mm wide brick or blockwork walls can be achieved by staggering the beams along it.


Fire


When finished with 13mm plasterboard, Treanor Pujol’s beam and block system provides one hour fire resistance.


Camber


The prestressed beams have inherent upward camber and due allowance should be made in the finishes to cater for this. Differential camber will occur where adjacent spans are of different lengths and where a change in direction of span occurs.

The beam camber complies with the recommendations of BS8110 and has a maximum value of span/300.




Load and spans for 155mm beam and block



Technical Information Sheet
BS EN 1992-1-1:2004
Self Weight of BeamBlock DensityWeight of Beam+ Block+GroutLoad / Span chart House Floor Beam, TP155, XC1, RF30
DL: Self Weight+Finishes (2.8kN/m2)+LL(kN/m2)
Most common applicationskN/mlKg/m3kN/m20.751.502.002.503.004.005.00
CONDITION 1


440 x 215 x 100 Blocks
0.277201.1504.654.304.103.653.553.303.10
13251.6154.454.153.703.553.403.203.05
19502.0954.303.703.553.453.303.102.95
CONDITION 2


440 x 215 x 100 Blocks
0.277201.2735.104.754.554.403.953.703.50
13251.7025.004.654.454.304.153.603.40
19502.1444.804.504.354.153.753.503.35
CONDITION 3


440 x 215 x 100 Blocks
    C25/30 Site concrete
0.277201.5685.455.054.854.704.554.304.10
13251.9535.455.054.854.704.554.304.10
19502.3475.405.054.854.654.504.253.75
CONDITION 4


440 x 215 x 100 Blocks
0.27 7201.5005.605.205.004.804.654.404.25
13251.8615.605.205.004.804.654.404.20
19502.2055.555.154.954.804.654.404.20
CONDITION 5


440 x 215 x 100 Blocks
    C25/30 Site concrete
0.27 7202.0626.255.805.555.355.204.904.70
13252.3256.205.755.555.355.204.904.70
19502.5926.205.755.555.355.154.904.70
CONDITION 6



C25/30 Site concrete
0.27 7203.5387.406.856.606.356.155.805.55
13253.5387.406.856.606.356.155.805.55
19503.5387.406.856.606.356.155.805.55
*Last update: 31 July 2014
The Treanor Pujol table is given as a guide only.
Allowance should be given to specific line and point loads from partitions etc.
Switch to 225mm load span table for beam and block
Technical Information Sheet
BS EN 1992-1-1:2004
Self Weight of BeamBlock DensityWeight of Beam+ Block+GroutLoad / Span chart Deep Floor Beam, TP225, XC1, RF60
DL: Self Weight+Finishes (1.8kN/m2)+LL(kN/m2)
Most common applicationskN/mlKg/m3kN/m20.751.502.002.503.004.005.00
CONDITION 1


440 x 215 x 100 Blocks
0.42 7201.4546.105.655.404.954.804.454.20
13251.9195.805.455.004.804.654.354.10
19502.3995.605.254.854.654.504.254.05
CONDITION 2


440 x 215 x 100 Blocks
0.42 7201.6626.756.256.005.755.555.004.70
13252.0926.506.055.805.605.404.904.60
19502.5346.255.855.655.455.304.804.55
CONDITION 3


440 x 215 x 100 Blocks
    C25/30 Site concrete
0.42 7202.0657.406.856.556.356.155.805.45
13252.4507.206.756.456.256.055.655.35
19502.8446.956.556.306.105.905.555.25
CONDITION 4


440 x 215 x 100 Blocks
0.42 7202.0447.607.056.756.506.305.955.70
13252.4057.457.006.706.506.305.905.60
19502.7497.256.806.556.356.155.805.50
CONDITION 5


440 x 215 x 100 Blocks
    C25/30 Site concrete
0.42 7202.8458.457.857.507.257.006.606.30
13253.1088.407.807.507.207.006.606.30
19503.3758.407.807.457.206.956.606.30
CONDITION 6



C25/30 Site concrete
0.42 7204.9479.959.258.908.558.307.857.50
13254.9479.959.258.908.558.307.857.50
19504.9479.959.258.908.558.307.857.50
*Last update: 31 July 2014
The Treanor Pujol table is given as a guide only.
Allowance should be given to specific line and point loads from partitions etc.
Switch to 155mm load span table for beam and block



beam and block CAD details

beam and block section

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beam and block projects

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Take a look to our project gallery to view full size pictures of beam and block.