Search results
Results from the WOW.Com Content Network
Fire hardening is the process of removing moisture from wood, changing its structure and material properties, by charring it over or directly in a fire or a bed of coals. This has been thought to make a point, like that of a spear or arrow , or an edge, like that of a knife or axe , more durable and efficient for its use as a tool or weapon.
A spear in situ. Most of the spears were made using trunks of slow-growing spruce trees, except for spear IV, which is made from pine.The complete spears vary in length from 1.84 to 2.53 m (6.04 to 8.30 ft), with diameters ranging from 29 to 47 mm (1.14 to 1.85 in). [29]
Spear-armed hoplite from Greco-Persian Wars. A spear is a polearm consisting of a shaft, usually of wood, with a pointed head.The head may be simply the sharpened end of the shaft itself, as is the case with fire hardened spears, or it may be made of a more durable material fastened to the shaft, such as bone, flint, obsidian, copper, bronze, iron, or steel.
The early findings support taking a comprehensive approach to fire-hardening buildings, said the institute's senior director for wildfire, Steve Hawks. “You can’t just do one or two mitigation ...
Fire experts think in terms of concentric circles around a home. Zone 0 is the closest, then comes Zone 1, which is five to 30 feet away. This zone should be "lean, clean and green," said Lando.
The CCC blocked the project to protect a few thousand local examples of the shrub, saying LADWP did not receive proper permitting; the area has since burned to the ground in the ongoing Palisades ...
The Clacton Spear, ... It is made of yew wood, shaped into a point, and when found was 387 mm (15.2 in) long, 39 mm (1.5 in) diameter and straight, but drying out ...
The fireproofing of wood utilizes a fire retardant chemical that remains stable in high temperature environments. The fire retardant is applied under pressure at a wood treating plant like the preservatives described above, or applied as a surface coating. In both cases, treatment provides a physical barrier to flame spread.