- Cost Savings Compared to Brick Unit in Solid Walling
- Dimensions to Provide 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
- Manufactured to BS EN 771-3 & Associated Test
Standards
Description
Foundation units are manufactured using selected lightweight
and dense aggregates,
binder is standard OPC, or to special order Sulphate Resisting
Cement. The unit weight
is less than 20Kg thereby assisting handling and laying.
Application and Classification
The units are intended for solid walling at or below DPC
level to support both internal or
external perimeter walls. They meet Class 1 to Class 3
soil conditions as defined in
BS5628 part 3 2001 and BRE digest 363,1996. For other
soil classification Type SR
Foundation Units are available to special order using
Sulphate Resisting Cement binder
as specification determined in BRE Digest 363 1996.
Physical Properties
Relationship of Density / Strength.
1300 kg/m3 - 7.3 N/mm2.
BS EN 772-13 Gross Density
Characteristic Compressive Strength
Wall design in accordance with BS 5628 part 1, the fk
value may be taken as 3.0/mm2.
using mortar grade (iii)
Modulus of Elasticity
Static modulus of these masonry units is 10kN/mm2.
Durability
Assessments on the performance of concrete units below
ground has indicated that this
product is completely satisfactory in the soil classifications
noted.
Dimensions
Tolerances as EN 771-3, Table 1 and EN 772-16, category
D1.
Unit length and height mm +3 -5
Unit width average mm +3 -5
Design Properties
Foundation
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Moisture
Movement
As tested to BS EN 772-14 : 2002
Total movement = 0.37mm/m
Water
Absorption by Capillarity
Test method EN 772-11 - No performance determined
Durability against freeze thaw
- No performance determined
Not to be exposed
Shear
Bond Strength
Declared Value 0.15N/mm2 BS EN 998-2 Annex C |
Thermal
conductivity (standard values)
L.Lamda (K) Value to CIBSE Guide Book
A 1999
3%m/c 0.50 5%m/c 0.54
Fire
Resistance
Foundation units are “Euroclass A1” as
defined in EN ISO 1182
Water
Vapour Permeability
EN 1745 : 2002 Table A3 water vapour diffusion coefficient
μ 5/15 |
Installation
The units are laid onto a mortar bed on a concrete
foundation in the normal manner.
Mortar mix unless specified by the Engineer is to be a Grade(iii)
i.e. 1.1.6. Cement lime
sand. Joint thickness to be a nominal 10mm; the distance
between horizontal joints of adjoining unit courses should
not be less than 75mm. The bonding of courses should be
formed in accordance with the diagrams shown.
Purchasing Data
Face Work Size
300mm x140mm or 275mm x 140mm Tolerances to EN 771-3.
Load Sizes
Load sizes may vary between 15-19 tonnes rigid and
20-27 tonnes artic lorries. 15 tonne lorries available with
additional surcharge.
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.
Quality Control
Interfuse Ltd operate a formalised QA system at both Syston
and Gainsborough plants.
All masonry units are subject to stringent quality control
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.
Marking
Each pack is marked for traceability of product and unit
clarification as given on the
delivery ticket. |
