Calxite Standard Stock and Technical Details
Blocks are manufactured to European Standard BS EN 771-3
(Superseding British Standard BS 6073-1)
| Type of block | Solid | Solid | Solid | Solid | Hollow | Hollow | Solid | Solid |
|---|
| Face size: 440mm x 215mm x | 75mm | 100mm | 140mm | 190mm | 140mm | 215mm | 100mm | 100mm |
| Finish | Close Textured | Close Textured | Close Textured | Close Texrured | Close Textured | Close Textured | General Purpose | General Pupose |
| Compressive Strength to BS EN 771-3 (N/mm2) | 3.6 | 7.3 | 7.3 | 7.3 | 7.3 | 7.3 | 7.3 | 7.3 |
| Equivalent Strength to BS 6073-1 (N/mm2) | 3.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 |
| Shear Bond Strength from Annex C of BS EN 998-2 (N/mm2) | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 |
| Average Block Weight (kg) | 14.6 | 19.0 | 26.0 | 36.3 | 19.7 | 26.5 | 19.5 | 26.6 |
| Gross Dry Density (kg/m3) | 1850 | 1850 | 1850 | 1850 | 1850 | 1850 | 1950 | 1950 |
| Approximate Unrendered Wall Weight (kg/m2) | 154 | 203 | 275 | 388 | 208 | 280 | 209 | 280 |
| Thermal Conductivity (W/mK @ 3% moisture content) | 1.18 | 1.18 | 1.18 | 1.18 | 1.18 | 1.18 | 1.28 | 1.28 |
| Moisture Movement (mm/m) (shrinkage & expansion) | <0.5 | <0.5 | <0.5 | <0.5 | <0.5 | <0.5 | <0.5 | <0.5 |
| Water Vapour Permeability tabulated from EN 1745 (u) | 5/15 | 5/15 | 5/15 | 5/15 | 5/15 | 5/15 | 5/15 | 5/15 |
| Configuration to EN 1996-1-1 | Group 1 | Group 1 | Group 1 | Group 1 | Group 2 | Group 2 | Group 1 | Group 1 |
Note: unit weights, which are given for design purposes, are approximate only and based on 3% moisture content. All units are Category 11 and manufactured to tolerance category D1.
Fire Resistance
Thakeham Calxite building blocks are manufactured from class 2 aggregates and are classified as reaction to fire Class A1.
Fire Ratings| | Loadbearing No Finish (hours) | | Non Loadbearing No Finish (hours) | |
|---|
| Block Thickness | Single Leaf | Cavity | Single Leaf | Cavity |
| 75mm solid | 1.5 hrs | 1.5 hrs | 1 hr | 4 hrs |
| 100mm solid | 2 hrs | 2 hrs | 2 hrs | 6 hrs |
| 140mm solid | 2 hrs | 2 hrs | 3 hrs | 6 hrs |
| 190mm solid | 2 hrs | 2 hrs | 4 hrs | 6hrs |
| 140mm cellular | 3 hrs | -- | 3 hrs | -- |
| 215mm hollow | -- | -- | 6 hrs | -- |
Pack Details
Packs are delivered banded with or without pallets. Additional packing can be supplied on request. Pack sizes and weights are as follows:
| Block Thickness | Pack Sizes (metres) | Pack Weight (tonnes) |
|---|
| 75mm solid | 7.2 | 1.0 |
| 100mm solid | 7.2 | 1.4 |
| 140mm solid | 4.8 | 1.2 |
| 190mm solid | 3.2 | 1.2 |
| 140mm cellular | 4.8 | 1.0 |
| 215mm hollow | 3.2 | 1.0 |
