By J. C. Hodge
Brickwork for Apprentices has been the validated reference on brickwork for generations of bricklayers. always in print for the reason that 1944, John Hodge's vintage textual content has now been totally revised in its 5th version through Malcolm Thorpe - who acted as a CITB consultant and was once taken with the draughting of the Intermediate building Award syllabus (bricklaying course) - to hide the brickwork craft-related devices of the most recent development Awards and similar Trowel Occupations NVQs from CITB / urban & Guilds at degrees 2 and three. The 5th variation contains prolonged assurance at the really new sector of skinny joint structures, to check the most recent industry-based requisites and technical advancements within the box. content material has been introduced totally based on contemporary alterations to the development rules, making sure that this article is going to stay an important reference for certified bricklayers and different pros operating within the development undefined, in addition to NVQ scholars new to the and wishing to embark on a profession in bricklaying. a brand new function during this version is the inclusion of a number of selection questions behind the ebook, matched to the present NVQ necessities, to supply scholars of the CITB / urban & Guilds Trowel Occupations NVQs with crucial perform and revision for examination practise. * new version totally revised through a former CITB consultant, taken with the draughting of the ICA syllabus * vintage textual content, consistently in print seeing that 1944! * a number of selection Questions fit the necessities of present CITB / C&G classes to supply crucial perform for NVQ scholars
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Extra info for Brickwork for Apprentices
Curing is carried out by protecting the concrete from the weather. The exposed concrete surface is covered with a water resistant material such as plastic or with damp canvas or hessian. This stops evaporation. If the temperature drops below 5°C, the hardening process almost stops, and if the temperature is too high, the temperature difference between the concrete and the surroundings can cause cracking. The concrete mix. Two essential properties of hardened concrete are durability and strength.
Will cause shrinkage crack damage to other bricks and blocks if used by mistake Usually has 41 volume of lime added to improve workability Compo Composition mortar using separate site deliveries of dry OPC, lime powder in bags, and sand in bulk Combines quicker strength gain of OPC with good workability of lime Messy splitting of bags of cement and lime powder on site, giving health and safety risks Obsolete for site use due to disadvantages given Gauged mortar Mortar prepared on site from bulk deliveries of wet-mixed LSM, to which 1 equal volume of OPC is added or ‘gauged’ each time a batch of mortar is required Added powder pigments can be carefully measured and blended at works, before delivery to site, to ensure consistent colour of hardened mortar Bulk delivery or stock-pile of LSM, to last a week or so, must be kept covered to prevent surface drying in summer and pigment blowing away.
Items of equipment additional to the tool kit Bat and closer gauge ¼ bat or closer These may be made up by the bricklayer. Brick cutting gauge For quick accurate marking of standard size cut bricks required for bonding purposes. This item should be made from oak or other hardwood in order to survive the rigours of life in a tool bag. Corner blocks A simple means of supporting bricklayer’s line at quoins that do not leave pinholes behind. If made from hardwood they will last longer. ¾ bat ½ bat 30 mm 30 mm 80 mm 50 mm Saw cut Hardwood corner block 40 Brickwork for Apprentices Frenchman A simple device made from an old table knife, heated, bent over and filed to shape for trimming mortar bed joints when carrying out weather-struck and cut pointing, or tuck pointing.