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The 15 cm M1881 was a breech-loaded rifled mortar with an early form of horizontal sliding block breech that used separate loading propellant charges and projectiles. There were two types of mount one was a static fortress mount that had a round metal base that bolted to a concrete slab or a mobile siege mount that bolted to a rectangular ...
The 21 cm M1880 was a heavy mortar that was designed to provide high-angle indirect fire for siege operations. It could be used to either attack or defend fortified areas. In defense, the mortar was used to provide high-angle fire to destroy enemy communications, supply, and attack trenches dug by an attacker during siege operations or it could be used by an attacker to destroy gun turrets ...
Bricklayer's trowel has an elongated triangular-shaped flat metal blade, used by masons for leveling, spreading, and shaping cement, plaster, and mortar. Pointing trowel, a scaled-down version of a bricklayer's trowel, for small jobs and repair work. Tuck pointing trowel is long and thin, designed for packing mortar between bricks.
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.
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 ...
The 21 cm Mörser 99 (Abbr. 21 cm Mrs 99) was a German siege mortar built by Krupp which served during World War I.The mortar utilized a new nickel-steel alloy of greater strength than other cast cannons, though it lacked a recoil mechanism.
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2S12 is in fact the designator for the combination of the 2B11 "Sani" heavy mortar with its transport vehicle 2F510, a GAZ-66-15 4×4 truck. The 2B11 weighs nearly 200 kg (500 lb) when fully assembled, and thus must be mounted to the 2×1 wheeled chassis 2L81 and towed to the emplacement site by the truck. The GAZ-66 prime mover also transports ...