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A World War II hexagonal pillbox on the bank of the Mells River at Lullington, Somerset, England A British mini-pillbox in Jerusalem. A pillbox is a type of blockhouse, or concrete dug-in guard-post, often camouflaged, normally equipped with loopholes through which defenders can fire weapons.
The Norcon pillbox was made from a concrete pipe 6 feet (1.8 m) diameter and 4 feet (1.2 m) high; the walls were 4 inches (10 cm) of non-reinforced concrete with several cut loopholes. The pipe would be sunk into the ground over a pit that would provide a total of 6 feet (1.8 m) headroom.
A small metal, plastic or fiberglass junction box may form part of an electrical conduit or thermoplastic-sheathed cable (TPS) wiring system in a building. If designed for surface mounting, it is used mostly in ceilings, concrete or concealed behind an access panel—particularly in domestic or commercial buildings [2].
Assembling the HESCO unit entails unfolding it and filling it with sand, soil or gravel, usually using a front end loader.The placement of the barrier is generally very similar to the placement of a sandbag barrier or earth berm except that room must generally be allowed for the equipment used to fill the barrier.
Reinforced earth with gabions supporting a multilane roadway Gabions as X-ray protection during customs inspection. A gabion (from Italian gabbione meaning "big cage"; from Italian gabbia and Latin cavea meaning "cage") is a cage, cylinder or box filled with rocks, concrete, or sometimes sand and soil for use in civil engineering, road building, military applications and landscaping.
A burial vault (also known as a burial liner, grave vault, and grave liner) is a container, formerly made of wood or brick but more often today made of metal or concrete, that encloses a coffin to help prevent a grave from sinking. Wooden coffins (or caskets) decompose, and often the weight of earth on top of the coffin, or the passage of heavy ...
A precast concrete walled house under construction An example of low-quality precast concrete with exposed dowels, connectors, indications of cracks, and malformations, even during its installation, Barangay Lantic, Carmona, Cavite, Philippines Interior view of the walls, supports, and roof of a precast commercial shop in Williston, North Dakota, US.
The concrete head contained a small TNT bursting charge, and was embedded with a number of metal fragments. A fuze is fitted to a central fuze well on the top of the mine. It could be used with a range of fuzes including the ZZ 35, ZZ 42 and ZU ZZ 35 that would trigger on either a tripwire pull or release.