Accredited manufacturer of masonry blocks
Foundation Units
Cost-effective, durable masonry units under 20kg, reducing mortar use, wall ties, and waste, with high productivity over brick walling.
Foundation units are manufactured using selected lightweight and dense aggregates, binder is standard Ordinary Portland Cement, or to special order, Sulphate Resisting Cement. The unit weight is less than 20kg, thereby assisting handling and laying.
Manufactured to BS EN 771-3 & associated test standards.
Key Features
Key Features of High-Strength Masonry Blocks
- Cost Savings Compared to Brick Solid Walling
- Dimensions to Accommodate Variable Cavity Wall Sizes
- High Productivity, One Unit Equal to 12 Brick Units
- No Cavity to Form, No Wall Ties
- Saving in Quantity of Mortar Used
- Units are Durable , Low Wastage
- Unit Weight less than 20kg
Applications
The units are intended for solid walling at or below DPC level to support both internal or external perimeter walls, including use in sulphate soil classes DS-1, DS-2 and DS-3. For other soil classifications, Type SR Foundation units are available to special order, manufactured using Sulphate Resisting Cement binder as specification determined in BRE Special Digest 1.
Available in Solid, Cellular and Hollow format.
Face work size is 440 mm x 215 mm.
Tolerance as BS EN 771-3, Table 1, Tolerance category D1.
Unit length and height +3, -5mm.
Unit width average +3, -5mm.
Relationship of Density/Strength .
EN772-13 Gross Dry Density – Category 11 Materials.
1300 kg/m3 – 7.3 N/mm2.
Wall design in accordance with BS 5628-1, the fk value may be taken as 3.0N/mm 2 using mortar grade (iii).
Static modulus of Foundation units is 1 OkN/mm2.
Assessments on the performance of concrete units below ground has indicated that this product is completely satisfactory in the soil classifications noted .
Lamda (K) Value to CIBSE Guide Book A 1999.
3% moisture content 0.50W/mK , 5% moisture content 0.54W/mK.
EN 17 45 : 2002 Table A3 water vapour diffusion coefficient μ 5/15.
Tolerances as EN 771-3, Table 1 and EN 772-16, category 01 .
Unit length and height +3 , -5 mm.
Unit width average +3, -5 mm.
Declared Value 0.15N/mm2 – EN 998-2 Annex C.
As tested to EN 772-14 : 2002.
Total movement = 0.37mm/m.
Intercrete Close Textured units can be painted directly using cement or water-based paints. An economic finish can be achieved using a mist coat (diluted emulsion) followed by 2 coats of emulsion. The paint can be brush or spray applied. The opacity will depend upon the quality of the paint and the number of coats applied.
Suitable for use below ground in accordance with PD 6697 .
Declared Value 0.15N/mm2, EN 998-2 Annex C.
lnterfuse Ltd operates a formalised Quality Assurance system at both Syston and Gainsborough plants. All masonry units are subject to stringent quality contro l checks and are tested daily in our own laboratory.
A documented factory production control system is in operation with regular checks made on raw materials , production and finished units. A stock control system is in operation with written procedures for non-conforming products. All products are produced to the current European Standards.
Each pack is marked for traceabil ity of product and unit clarification as given on the delivery ticket.
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Face Work Size. 300mm x140mm or 275mm x 140mm, tolerances to EN 771-3 .
300mm X 275mm X 140mm | |||
Weight Per Unit | Units Per Pack | Units Per m2 | Units Per m2 |
15.75 kg | 54 | 21.5 | 23.4 |
Load sizes may vary between 19 tonnes rigid and 24-27 tonnes artic lorries. We recommend that packs be stored on clear, level ground no more than two cubes high, and close to where they are to be used. The workforce should be fully trained in both Health & Safety at Work and Manual Handling principles. The safe handling of units is covered by the Construction Industrial Advisory Committee on an HSE information sheet.