Recycled aggregates crushed concrete and brick masonry have long been used in the uk and overseas construction industries. This digest deals with ducted extract systems and balanced supply and extract systems, with and without heat recovery. Site investigation designing buildings wiki share your construction industry knowledge. Pt3630715 as july 2015 assessment schedule for the. The procedures given for the ground assessment and concrete specification cover the fairly common occurrences of sulfates, sulfides and acids, and the more rarely occurring aggressive carbon dioxide found in some ground and surface waters, which affects concrete. A classic example of a landlord getting ripped off by one of the local damp proofing. There is evidence of old movement in the structure, where the heads and sills in the rear window openings have distorted.
The british building research establishment digest 363 july 1991 entitled sulphate and acid resistance of concrete in the ground is strongly recommended for further reading on the impact of sulphates and precautions which can be taken. Bre is a building science centre that generates new knowledge through research. In order to read a secure pdf, you will need to install the fileopen plugin on your computer. The highways agency 5 will issue an amendment to highways agency manual of. Pdf design of normal concrete mixes bre nor hazurina othman.
Bre digest 363, bs 5328 and bs 882, and through discussions with the. Building simple plan brick or blockwork freestanding walls. The digital geographic information exchange standard digest part 3 codes and parameters edition 2. National roads authority volume 4 section 2 design manual for roads and bridges part 8 nra hd 11815 march 2015 3 implementation 1. Carrying out a soakaway test in order to carry out the test you need to excavate a trial pit to an adequate depth beneath the estimated invert level of the inlet pipe.
The reporting and implementation of the findings of an appraisal for change of use are outlined. In many cases it would result in full or partial underpinning. Please note that this is a scanned copy of a paper originally published in 1995, so the text is not as clear as in documents created as pdf files. However, due to a lack of suitable specifications, there has. Sulphate and acid attack on concrete in ground and landfill. Bre digest 363, bs 5328 and bs 882, and through discussions with the relevant industry bodies. Bre helps its government and private sector clients meet the significant environmental, social and economic challenges they face in delivering homes, buildings and communities.
Access to a pdf of this document is available by clicking through the links to the construction information service database and retrieving the document by searching for the title. However, a high proportion of older buildings are affected by rising damp to some degree or another. Parts 14 of this special digest replace all of bre digest 363. This is used to create products, tools and standards that drive positive change across the built environment. Enhanced concrete quality an incremental step in concrete quality that could be used as an additional protective measure apm. Many bre publications are closely linked to and support the academys training courses. This digest explains the differences and describes a practical sequence for carrying out such an appraisal. Chemical resistance of stanton bonna concrete drainage. We use our cutting edge research to develop a range of products, services, standards and qualifications that are used around the world to bring about positive change in the built. New guidance or interpretative documents produced by other bodies as a follow.
Since the late 1980s, however, deterioration of concrete as a result of the formation of thaumasite has become recognised as a separate form of. Soakaway design bre digest 365 soakaways have been the traditional way to dispose of stormwater from buildings and paved areas remote from a public sewer or watercourse. In recent years, soakaways have been used within urban, fully sewered areas to limit the impact on discharge of new upstream building works and to avoid costs of sewer. Bre digest 363 has been revised to incorporate the findings of the thaumasite expert group, and has been issued as sd1. The digital geographic information exchange standard digest. Bre bookshop each cd contains bre material published in the current year, including reports, specialist reports, and the professional development publications. Assessing the risk of sulfate attack on concrete in the ground links the data given in the 15year report br 164 on a study of the sulfate resistance of concrete with recommendations in the revised bre digest 363 on the use of concrete in sulfate soils and groundwaters. Approved document c, site preparation and resistance to contaminants and moisture, suggests that the extent and level of site investigations needs to be tailored to the type of. Dig 366 structural appraisal of existing buildings for change. Download this book pdf price includes vat, unlike print books, digital books are subject to vat. Soakaways design example for bre digest 365 if the area of your development being drained by a soakaway exceeds 100m 2 it must be designed in accordance with bre digest 365 to ensure that it will function correctly. Floors and ceilings can be upgraded by applying fireresisting material below the ceiling, below the floor or above the floor.
Best practice guidance for energy management, auditing and controls these guides have been produced jointly with energy services and technology association esta and its members to represent best practice within the industry. Sulfate and acid resistance of concrete in the ground. In the early 1990s, the thaumasite form of sulfate attack tsa became recognised as a separate mechanism affecting concrete in the uk. Sulphate and acid resistance of concrete in the ground. If chemical reaction appears to be the cause, samples of material for laboratory testing should be taken. The chemical resistance of stanton bonna concrete drainage products may therefore be classified as follows.
The majority of lowrise buildings in the uk are constructed using brick, concrete block or stone with mortar joints. Concrete durability and repair, concrete, materials bre. Abstract provides guidance on the specification for concrete for installation in natural ground and in brownfield locations. Bre is the uks leading centre of expertise on the built environment, construction, sustainability, energy, fire and many associated issues. Recommended options for most levels of exposure include blends of various types of portland cement. In the early 1990s, the thaumasite form of sulfate attack tsa became recognised as a. The bookshop is managed by bre academy, bre s training arm.
Five levels of classification are given that are equivalent to those given in bre digest 363 now superseded. This digest describes the field techniques most commonly used during site investigations for lowrise buildings and provides guidance on how to select the appropriate method for a specific location. Building control copeland borough council the copeland centre catherine street whitehaven cumbria ca28 7sj tel. This is used to create products, tools and standards that drive positive change across the built. The base of the trial hole should be approximately the same depth as anticipated in the full size soakaway. Bre digest 365 civilweb soakaway design spreadsheet. Revision to concrete in aggressive ground guidance. The role of ph in thaumasite sulfate attack the university of. Dig 366 structural appraisal of existing buildings for. The civilweb soakaway design spreadsheet can be used to complete soakaway designs fully in accordance with bre digest 365. Full text of bre digest 436 part 1 wind load on buildings brief guidelines for using bs 6399 2 1997 see other formats wind loading on buildings brief guidance for using bs 63992. The digest of breeam assessment statistics was sponsored by the bre trust and published by bre. Powder coating provides high corrosion resistance, optimum mechanical properties and excellent gloss retention. Consequently the requirement in digest 363 for aggregate concrete blocks to have 50% of the least crosssectional area to be carbonated for sulphate soil classifications ds2 and 3 has been replaced by a requirement for blocks to be surface.
The wide range of colours ensure that your new mezzanine reflects your corporate colour scheme and can be applied to. Whichever method, or combination of methods, are adopted it is essential to use a method. Concrete august 2009 35 codes and standards bre digest 330. One of the many causes of damage is foundation movement resulting especially from the drying shrinkage of clay subsoil. In addition to attack on concrete, industrial fill can cause disruption to buildings constructed on it by volume changes within the fill due to pyrites oxidation or expansive steel slag. This guide considers the ph and presence of magnesium ion as well as the sulphate. Bre helps its government and private sector clients meet the significant environmental, social and economic challenges they face in delivering homes. The current bre digest 330 was published in 2004 1 updating the previous edition published in 1999 2. Bre is owned by the bre trust, a registered charity. Please contact the press office for the latest information. Mezzanine and raised storage as the purchaser of a mezzanine floor you may not be aware that the government, due to persistent reports of failure in design and performance of mezzanine platforms, has just published its minimum design guidance for industrial platforms known as digest 437. Sulfate class for site as bre digest 363 design chemical class as bre special digest 1 class 4 dc4 part 4 of bre special digest 1 recommends that the structural performance level for concrete pipes should be considered as normal.
Bre bookshop supplies a wide range of building and construction related information products from bre and. Bre digest 398 the complete ventilation solution nuaire. One of the recommended binder combinations is portland cement, blended at the mixer with fine fly ash essentially as defined in as 3582. Fully working version where you can change the company information and logo in the top left corner. Design of granular wor ng platforms for construction plant a guide to good practice mark davies director, rnp associates working platforms igsygg joint meeting, york, 9th may 2017. Guidance on designing concretes to resist conventional sulfate attack was developed in a series of bre digests, the most recent of which was digest 363 sulfate and acid resistance of concrete in the ground, the first edition of which was published in 1991. For classifying ground conditions for sulfate level in respect of design of buried concrete, the recommendations of sd1 should be followed. Because these materials are often thought to be inferior to natural aggregates,they are. We pride ourselves on being able to provide the answer to virtually any constructionrelated testing question. The water rises through the pores capillaries in the masonry by a process loosely termed capillarity. It replaces the 2003 edition and has been revised to reflect new thinking and changes to british standards. Drm is included at the request of the publisher, as it helps them protect their by restricting file sharing. Sd 1 special digest by building research establishment pdf, then you have come on to the loyal website. Sulfate specification for structural backfills trl.
Bre digest 412 gives a methodology for calculating the potential heave. Sd1, special digest 1, digest 363, dg363, concrete, precast. This is not a new phenomenon and has been experienced many times in the past. Contact bre for information about its services, or for technical advice. Consequently the requirement in digest 363 for aggregate concrete blocks to have 50% of the least crosssectional area to be carbonated for sulphate soil classifications ds2 and 3 has been replaced by a requirement for blocks. Bre is a world leading, multidisciplinary, building science centre with a mission to improve buildings and infrastructure, through research and knowledge generation. Resistance of concrete in the ground is strongly recommended. Review after three years experience prepared by professor l a clark and bre. Full text of bre digest 436 part 1 wind load on buildings. This percolation test follows the procedures laid out by the bre digest 365. The author wishes to acknowledge the support of the bre trust and all bre group staff who have provided assistance with the creation of this publication.
Bre has a longestablished reputation for the technical and information papers produced by the building research establishment now known just as bre and its predecessor, the building research station brs. The building research establishment bre has recently revised special digest 1 concrete in aggressive ground. The approach to structural appraisal of an existing building is fundamentally different from that taken in designing the structure of a proposed building. It includes important advice on infiltration testing and soakaway design. Singleuser or company license, which one is the best for me. Digests, good building guides, good repair guides and information papers.
Digest 363 sulfate and acid resistance of concrete in the ground. Please contact the press office for the latest information revision to concrete in aggressive ground guidance. Each increment in concrete quality is counted as an extra apm. Pt 363 0715 as july 2015 assessment schedule for the stormstore modular precast concrete flow attenuation system as manufactured by fp mccann. One borehole should be close to the effected structure, the other in a green field location, ie away from trees where the moisture content should be at its equilibrium. Manual of contract documents for highway works volume. The digest of breeam assessment statistics bre group. Structural appraisal of existing buildings including for a. Home publication index bre dig 366 structural appraisal of existing buildings for change of use.
The main change was the incorporation of bre information paper 102 3 introducing guidance in the application of metakaolin, silica fume and lithium salts with other minor editorial revisions. Bre digest 365 is a very commonly used guidance document for the design of soakaways in the uk. In recent years, soakaways have been used within urban, fullysewered areas to limit the impact on discharge of new upstream building works and to avoid. Secure pdf files include digital rights management drm software. Please note that this is a scanned copy of a paper originally published in 1994, so the text is not as clear as in documents created as pdf files. Many of the ways in which cracking can be produced in buildings are discussed in digests 359 and 361. Bre building research establishment is an independent, researchbased consultancy, testing and training organisation, operating in the built environment and associated industries. Gives guidance on the structural appraisal of existing buildings, including making a structural appraisal for a material change of use. The clay research group the clay research the clay research. Building control copeland borough council the copeland.
Obtain from contract documents the specified dc class. Rising damp its control rising damp is not the most common form of dampness encountered in buildings. Dg 361 designing buildings wiki share your construction industry knowledge. Building research establishment design of normal concrete mixes second edition. Extract from table 1 bre digest 251 classification of damage based upon crack widths 4. This is carried out from moisture contents taken at regular intervals from the boreholes. The british building research establishment digest. This manual has been produced to enlighten and inform those who are in some way.
The cba research work supports the bre statement that surface carbonation enhances sulphate resistance. We also produce a number of longer textbooks and reference books, including the green guide to. Article the significance of cracks in lowrise buildings. Gives guidance for professional engineers on the structural appraisal of existing buildings for a change of use, in particular as required by the building regulations for england and wales. The possible sinking of boreholes and plumb and level surveys bre, 1995. The appearance of even small cracks was regarded as a serious matter.
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