//Building Blocks Technical
Building Blocks Technical 2018-02-15T22:45:37+00:00

Building Blocks Technical

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DWG Files

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Acrobat Files

240_Detail.dxf 240_Detail.pdf
190mm_Thermal_block_Footing_detail.dwg 190mm_Thermal_block_Footing_detail.pdf
190mm_Thermal_block_Window_detail.dwg 190mm_Thermal_block_Window_detail.pdf
190mm_Thermal_block_Window_Sill_detail.dwg 190mm_Thermal_block_Window_Sill_detail.pdf
Thermal_Block_Course_Layout.dwg Thermal_Block_Course_Layout.pdf
Typical_Thermal_Block.dwg Typical_Thermal_Block.pdf
Thermal_Wall.dwg Thermal_Wall.pdf
190mmH_x_140mmW_Lintel_detail.dxf 190mmH_x_140mmW_Bond_Beam_Detail.pdf
190mmH_x_190mmW_Bond_Beam_Detail.dxf 190mmH_x_190mmW_Bond_Beam_Detail.pdf
190mmH_x_190mmW_Lintel_detail.dxf 190mmH_x_190mmW_Lintel_detail.pdf
2020_knockout_block_to_box_slab.dxf 2020_knockout_block_to_box_slab.pdf
390mmH_x_140mmW_Bond_Beam_Detail.dxf 390mmH_x_140mmW_Bond_Beam_Detail.pdf
390mmH_x_140mmW_Lintel_detail.dxf 390mmH_x_140mmW_Lintel_detail.pdf
390mmH_x_190mmW_Bond_Beam_Detail.dxf 390mmH_x_140mmW_Bond_Beam_Detail.pdf
390mmH_x_190mmW_Lintel_detail.dxf 390mmH_x_190mmW_Lintel_detail.pdf
Aluminium_Frame_Connection_detail.dxf Aluminium_Frame_Connection_detail.pdf
Articulation_Joints.dxf Articulation_Joints.pdf
Control_Joint_above_window.dxf Control_Joint_above_window.pdf
Control_Joint_at_Window.dxf Control_Joint_at_Window.pdf
Control_Joint_through_bond_beam.dxf Control_Joint_through_bond_beam.pdf
Precast_Alternative_190mm_techdry_blocks.dxf Precast_Alternative_190mm_techdry_blocks.pdf

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Thermal Test Results

190mm Tech-dry Thermal blocks® have been tested to achieve a R. value of 2.226. An even higher result can be achieved  with rendering and or plaster lining to the internal and external walls.Please view below for the engineer calculated 190mm & 240mm blocks with or without plaster lining as options.

THERMAL RESISTANCE OF TECH DRYTHERMAL BLOCKS

Summary
The following calculated tables should be read in conjunction with the data attached below.Further test results will be available in early 2008 once a test facility in Melbourne is commissioned.

1600 Lightweight Blocks 190 mm and 240 mm, With and Without  Stud & Plasterboard
190mm Blocks

5mm Render both sides

240mm Blocks

5mm Render both sides

190mm Blocks

with 22mm Airspace & 10mm Plaster one side

240mm Blocks

with 22mm Airspace & 10mm Plaster one side

Total thermal resistance m2.K/W 2.06 2.07 2.07 2.14
External render mm 5 5 5 5
External leaf thickness mm 190 240 190 240
Reflective airspace mm 0 0 22 22
Plasterboard mm 0 0 0 0
Internal render mm 5 5 0 0
Width of insulation in cores mm 80 70 40 40
Maximum density of concrete kg/m3 1600 1600 1600 1600

Appendix 1 – Details

 Block Description
Refer to photos of a proposed concrete block with polystyrene inserts.

  • Block widths 190mm or 240 mmOne core per block
  • Maximum face shell and web dimensions as tabulated
  • Maximum web thickness (at  narrowest point) 20 mm
  • Web rebate 100 mm
  • The blocks are made with a vertical rebate down each end of the block which the polystyrene slides into (the shell thickness that meets the batt is 20mm each end).
  • The block may be either denseweight (< 2180 kg/m3) or lightweight (< 2180 kg/m3) as tabulated.

Thermal Conductivity of Polystyrene
Based on the following information for polystyrene, provided by RMAX, the thermal conductivity, k is taken as 0.34 W/m.K. This corresponds with other published data.

Thickness
mm m2
R
m2.K/W
50 1.47
55 1.62
60 1.76
65 1.91
70 2.06

Polystyrene Insert Description

  • The polystyrene batt shown in the photograph is 50mm thick but is normally up to 75mm thick. The minimum thickness of polystyrene to achieve the thermal resistances is tabulated and varies up to 100 mm.
  • Polystyrene protrudes by 10mm through the block to touch the polystyrene above, as well as protruding out the sides 5mm each end to touch the polystyrene each side in the eighbouring block.

Render Description

Internal lightweight render thickness – 5mm
External lightweight render thickness – 5 mm

Battens, Plasterboard and Reflective Airspace
Where specified in the tables, the battens, plasterboard and reflective airspace shall be as follows.

  • Battens shall be wide spaces and include a thermal break (insulating material to reduce thermal bridging).
  • Both surfaces of the air space shall incorporate reflective material of low emissivity.

Plasterboard shall be a minimum of 10 mm thick.

Appendix 1

1600 kg/m3 Lightweight Blocks 190 mm and 240 mm, With and Without  Stud & Plasterboard

Climate zone 7 7 7 7
Required thermal resistance R m2.K/W 1.90 1.90 1.90 1.90
Total thermal resistance R m2.K/W 2.06 2.07 2.07 2.14
Is there sufficient thermal resistance? OK OK OK OK
Is there sufficient thermal resistance? 1.08 1.09 1.09 1.12
Wall Properties
External air film mm 0.8 0.8 0.8 0.8
External render mm 5 5 5 5
External leaf thickness mm 190 240 190 240
Cavity width mm 0 0 0 0
Internal masonry leaf mm 0 0 0 0
Airspace mm 0 0 0 0
Reflective airspace mm 0 0 22 22
Plasterboard mm 0 0 10 10
Internal render mm 5 5 0 0
Internal air film mm 3.2 3.2 3.2 3.2
Thermal conductivity of external air film k  W/m.K 0.026 0.026 0.026 0.026
Thermal conductivity of exernal render k  W/m.K 0.400 0.400 0.400 0.400
Thermal conductivity of external leaf thickness k  W/m.K 0.870 0.870 0.870 0.870
Thermal conductivity of cavity k  W/m.K 0.026 0.026 0.026 0.026
Thermal conductivity of internal masonry leaf k  W/m.K 0.870 0.870 0.870 0.870
Thermal conductivity of airspace k  W/m.K 0.026 0.026 0.026 0.026
Thermal conductivity of reflective airspace k  W/m.K 0.000 0.000 0.036 0.036
Thermal conductivity of plasterboard k  W/m.K 0.170 0.170 0.170 0.170
Thermal conductivity of internal render k  W/m.K 0.400 0.400 0.400 0.400
Thermal conductivity of internal air film k  W/m.K 0.026 0.026 0.026 0.026
Resistance of external air film R m2.K/W 0.03 0.03 0.03 0.03
Resistance of external render R m2.K/W 0.01 0.01 0.01 0.01
Total thermal resistance of block R m2.K/W 1.88 1.89 1.22 1.29
Resistance of cavity R m2.K/W 0.00 0.00 0.00 0.00
Resistance of internal masonry leaf R m2.K/W 0.00 0.00 0.00 0.00
Resistance of airspace R m2.K/W 0.00 0.00 0.00 0.00
Resistance of reflective airspace R m2.K/W 0.00 0.00 0.62 0.62
Resistance of plasterboard R m2.K/W 0.00 0.00 0.06 0.06
Resistance of internal render R m2.K/W 0.01 0.01 0.00 0.00
Resistance of internal air film R m2.K/W 0.12 0.12 0.12 0.12
Total thermal resistance R m2.K/W 2.06 2.07 2.07 2.14
Are cores filled with air(a) or insulation (i)? i i i i
Are web rebates filled with air? i i i i
Are joint spaces filled with air? i i i i
Width of insulation in cores mm 80 70 40 40
Width of insulation in web rebate mm 80 70 40 40
Width of insulation in joint spaces mm 80 70 40 40
Is insulation width small than core width? OK OK OK OK
Insulation width / core width 0.65 0.40 0.32 0.23
Density of concrete Dens kg/m3 1600 1600 1600 1600
Thermal conductivity of concrete face shells k f W/m.K 0.515 0.515 0.515 0.515
Thermal conductivity of webs k w W/m.K 0.515 0.515 0.515 0.515
Thermal conductivity of cores k c W/m.K 0.034 0.034 0.034 0.034
Thermal conductivity of web rebates k r W/m.K 0.034 0.034 0.034 0.034
Thermal conductivity of joint space k j W/m.K 0.034 0.034 0.034 0.034
Block length mm 390 390 390 390
Block height mm 190 190 190 190
Block width mm 190 240 190 240
Joint thickness mm 10 10 10 10
Outer face shell mm 33 33 33 33
Inner face shell mm 33 33 33 33
Web rebate depth mm 100 100 100 100
Web 1 thickness mm 20 20 20 20
Web 2 thickness mm 0 0 0 0
Web 3 thickness mm 20 20 20 20
Number of cores mm 1 1 1 1
Core length mm 350 350 350 350
Core width mm 124 174 124 174
Material thickness mm 72 74 72 74
Material thickness % 38% 31% 38% 31%
Surface density kg/m2 115 119 115
Gross density kg/m3 607 496 607
Web area ratio 4.5% 4.5% 4.5% 4.5%
Core area ratio 83.1% 83.1% 83.1% 83.1%
Web rebate area ratio 5.0% 5.0% 5.0% 5.0%
Joint area ratio 7.4% 7.4% 7.4% 7.4%
Are area ratios consistent OK OK OK OK
Resistance of webs R m2.K/w 0.241 0.338 0.241 0.338
Resistance of cores R m2.K/w 2.493 2.199 1.316 1.316
Resistance of rebates R m2.K/w 2.493 2.199 1.316 1.316
Resistance of joint space R m2.K/w 2.493 2.199 1.316 1.316
Effective resistance of cores/webs/rebates/joint space R m2.K/w 1.754 1.762 1.096 1.165
Resistance of outer face shell R m2.K/w 0.064 0.064 0.064 0.064
Resistance of inner face shell R m2.K/w 0.064 0.064 0.064 0.064