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German masons repointing a wall in 1948. Repointing is the process of renewing the pointing, which is the external part of mortar joints, in masonry construction. Over time, weathering and decay cause voids in the joints between masonry units, usually in bricks, allowing the undesirable entrance of water.
Tuckpointing was a way of achieving a similar effect using cheap, unrubbed bricks; these were laid in a mortar of a matching colour (initially red, but later, blue-black bricks and mortar were occasionally used) and a fine fillet of white material, usually pipe clay or putty, pushed into the joints before the mortar set. [4]
Brick trowel: or mason's trowel is a point-nosed trowel for spreading mortar on bricks or concrete blocks with a technique called "buttering". The shape of the blade allows for very precise control of mortar placement. Bucket trowel: a wide-bladed tool for scooping mortar from a bucket; it is also good for buttering bricks and smoothing mortar.
It can use the same pointing optics as the MO-120-RT-61. [3] The LLR 81mm can be parachuted either piece by piece, in a kit comprising a dismantled weapon and ammunition, or in larger crates comprising several weapons. The barrel was reinforced so as to allow firing of all existing 81 mm mortar ammunition. [3]
The main new feature of the vehicle is a semi-automatic rifled gun, which allows firing of all types of mortar mines and shells (unification with the 2A80 automatic gun-howitzer-mortar [clarification needed], which is also installed on the 2S31 and 2S34): the gun can fire like a howitzer and mortar, and also be used for direct fire. [3]
Bricks may be cut and assistance given to 'rake out' the mortar joints, if that coursing joint form is required, or in re-pointing work. The baseline rate for a bricklayer is to lay 1,000 bricks a day; [ citation needed ] if the hod carrier is serving a team of two then he must move 2,000 bricks although it is not uncommon for experienced hod ...
Most London stock bricks are more or less porous, as is the lime mortar in which they have traditionally been laid. The pointing should be flush pointing so that rain water can run down off the surface and not be encouraged to soak into the wall as is the case with recessed or struck pointing. When used in this way the brickwork does not get ...
It is possible that galleting is used when the local stone is not an easily worked freestone, which means that the stone is more irregular and therefore requires thick mortar joints. [1] In this case, gallets would serve as wedges to provide structural support to the stone and would shield the mortar from weather.