Edenhall Technical Brochure online_Dec 2018

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BTB 11 ADVANTAGES OF CONCRETE EQS • EQs are produced in solid form with no frogs, perforations or voids, which is the preferred option for a number of Local Authorities and Agencies. • Concrete hardens with age. A brick which is 50N/mm 2 strength at its early stage will keep increasing in strength and resistance to moisture. • Edenhall EQ’s are a custom made unit manufactured on a regional basis with competitive prices, consistent availability and realistic delivery periods. SUMMARY The development of the Concrete EQ, which has been in existence now for over 30 years, has lead to its increased use as a cost effective, readily available masonry unit. Produced on a regional basis throughout the UK it is generally available from stock and can be delivered either direct to site or via the extensive network of Builders Merchants supplied by Edenhall. Head Office: PD Edenhall Ltd, Danygraig Road, Risca, Newport, NP11 6DP Tel: 01633 612671 Fax: 01633 601280 edenhall.co.uk The information and guidance contained in our Technical Bulletins, Technical Data Sheets and Technical Manual are regularly reviewed as part of Edenhall’s continuous development and improvement programme. Updates and amendments can be made without notice and the Company cannot accept liability for any errors or omissions. The content of this document and the referenced data sheets and bulletins, including tables, diagrams and images, are subject to copyright.
BTB 12 BRICK TECHNICAL BULLETIN USE OF EDENHALL BRICKS WITH DISSIMILAR MATERIALS It is recognised that a large proportion of building materials, especially masonry walling products, can have different characteristics stemming from their basic raw materials, manufacturing methods, properties and performance, and although these products all fulfil the functions required of them, the designer and end user should be aware of the differing properties and the effect on the final building. A prime example is that of concrete and clay bricks. Both products expand and contract in response to thermal movement but clay bricks suffer an irreversible expansion after manufacture due to adsorption of moisture from the atmosphere. That expansion can vary depending on the type of clay and the firing method. By contrast, concrete has a tendency to shrink during drying and expand back to its original size when wetted. It should be noted that the drying shrinkage and moisture movement of concrete masonry can vary from the extremes of aerated concrete @ 0.09% to that of Edenhall bricks @ 0.02-0.03%. These values themselves can influence the frequency and position of movement joints. However, there are instances where Edenhall bricks and clay bricks are to be used together and in these cases it is important that steps are taken to accommodate the differential movement that may occur. 1. If either type of brick is used below dpc and another type built off it, eg. Edenhall bricks below dpc and clay bricks above it, then the dpc may act as a slip plane and allow some amount of lateral movement between the two products. Below dpc, because the Edenhall brick is likely to be in a semi-damp location, then it may not be necessary to incorporate movement joints at the recommended intervals as the likelihood of shrinkage and hence the risk of differential movement is small. 2. If the clay brick is used below dpc and the Edenhall brick built off it then normal incorporation of movement joints in the superstructure should be sufficient to accommodate the differential movement. 3. Feature Panels: These may be located where either clay or concrete bricks are incorporated as feature bricks surrounded by an alternative product. In these instances provision should be made in the form of horizontal dpcs to act as slip planes both above and below the panels. Vertical joints should be installed at the edges. In all cases the number and position of wall ties should be adjusted to ensure structural stability. An Engineer’s opinion should be sought to verify the design. 4. Splash Courses: These can be examples where bricks are built up off the dpc for a number of metres or even up to the height of the wall head at ground floor level. Again, slip courses may be introduced to allow for differential movement between any different materials. If the Edenhall bricks are built at the base level then it is likely that the dead weight and superimposed load of the masonry above those brick courses may be sufficient to restrain the brickwork to the extent that it may be possible to minimise the frequency and distance that movement joints are required. This depends on the type of masonry unit that is built on top of the brickwork. 5. Should rendered aggregate concrete blockwork be built on top of concrete facing work then any movement joints incorporated into the blockwork should be followed through the brickwork courses below. 6. Where there is an element of doubt or suitability regarding the efficiency of a slip plane then an alternative action of incorporating bed-joint reinforcement into the structure should be considered .This will have the effect of dissipating internal stresses and controlling the differential movement. Head Office: PD Edenhall Ltd, Danygraig Road, Risca, Newport, NP11 6DP Tel: 01633 612671 Fax: 01633 601280 edenhall.co.uk The information and guidance contained in our Technical Bulletins, Technical Data Sheets and Technical Manual are regularly reviewed as part of Edenhall’s continuous development and improvement programme. Updates and amendments can be made without notice and the Company cannot accept liability for any errors or omissions. The content of this document and the referenced data sheets and bulletins, including tables, diagrams and images, are subject to copyright.
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TECHNICAL MANUAL FOR BRICKS edenhal
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edenhall.co.uk CONTENTS 1. INTRODUC
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edenhall.co.uk 10. APPENDICES Appen
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edenhall.co.uk • The cement conte
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edenhall.co.uk 6.4 Brick Specificat
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Page 35 and 36: edenhall.co.uk 7.13 Mortar A 1:1:6
Page 37 and 38: edenhall.co.uk 9. INDEX Page Number
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Page 44 and 45: BRICK TECHNICAL DATA SHEET ENGINEER
Page 46 and 47: BTDS 4 BRICK TECHNICAL DATA SHEET D
Page 48 and 49: BTDS 5 Notes: S: Specify Dimension
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Page 52 and 53: BTB 1 CAVITIES Both leaves of a cav
Page 54 and 55: BTB 1 The most common causes are:
Page 56 and 57: BTB 2 Under the more recent BS EN 7
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Page 62 and 63: BTB 4 PRESCRIBED MORTARS (BY VOLUME
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Page 66 and 67: BTB 5 Dissimilar Materials: In cert
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Page 70 and 71: BTB 5 The length of a panel can als
Page 72 and 73: BTB 5 BED JOINT REINFORCEMENT Figur
Page 74 and 75: BRICK TECHNICAL BULLETIN EFFLORESCE
Page 76 and 77: BTB 8 Removal of Mortar Stains with
Page 78 and 79: BTB 8 Pressure Water Cleaning Press
Page 80 and 81: BRICK TECHNICAL BULLETIN RESISTANCE
Page 82 and 83: BRICK TECHNICAL BULLETIN COURSING B
Page 84 and 85: BRICK TECHNICAL BULLETIN CONCRETE E
Page 88 and 89: BRICK TECHNICAL BULLETIN FIRE RESIS
Page 90 and 91: BRICK TECHNICAL BULLETIN THERMAL IN
Page 93 and 94: HSDS 1 HEALTH & SAFETY DATA SHEET P
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Page 97 and 98: edenhall.co.uk QUESTIONS & ANSWERS
Page 99 and 100: EDENHALL BRICKS QUESTIONS & ANSWERS
Page 101 and 102: Lime based mortars are more flexibl
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Page 105 and 106: 38. Can I render or plaster on top
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