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Caulking
Caulk or, less frequently, caulking is a material used to seal joints or seams against leakage in various structures and piping. The oldest form of caulk consisted of fibrous materials driven into the wedge-shaped seams between boards on wooden boats or ships. Cast iron sewerage pipe were formerly caulked in a similar way. Riveted seams in ships and boilers were formerly sealed by hammering the metal. Modern caulking compounds are flexible sealing compounds used to close up gaps in buildings and other structures against water, air, dust, insects, or as a component in firestopping. In the tunnelling industry, caulking is the sealing of joints in segmental precast concrete tunnels, commonly by using concrete. Historical uses Wooden shipbuilding Traditional caulking (also spelled calking) on wooden vessels uses fibers of cotton and oakum (hemp) soaked in pine tar. These fibers are driven into the wedge-shaped seam between planks, with a caulking mallet an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caulking Underneath Bathroom Sink
Caulk or, less frequently, caulking is a material used to seal joints or seams against leakage in various structures and piping. The oldest form of caulk consisted of fibrous materials driven into the wedge-shaped seams between boards on wooden boats or ships. Cast iron sewerage pipe were formerly caulked in a similar way. Riveted seams in ships and boilers were formerly sealed by hammering the metal. Modern caulking compounds are flexible sealing compounds used to close up gaps in buildings and other structures against water, air, dust, insects, or as a component in firestopping. In the tunnelling industry, caulking is the sealing of joints in segmental precast concrete tunnels, commonly by using concrete. Historical uses Wooden shipbuilding Traditional caulking (also spelled calking) on wooden vessels uses fibers of cotton and oakum (hemp) soaked in pine tar. These fibers are driven into the wedge-shaped seam between planks, with a caulking mallet and a broad chisel-lik ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oakum
Oakum is a preparation of tarred fibre used to seal gaps. Its main traditional applications were in shipbuilding, for caulking or packing the joints of timbers in wooden vessels and the deck planking of iron and steel ships; in plumbing, for sealing joints in cast iron pipe; and in log cabins for chinking. In ship caulking, it was forced into the seams using a hammer and a caulking iron, then sealed into place with hot pitch. It is also referenced frequently as a medical supply for medieval surgeons, often used along with bandages for sealing wounds. History The word oakum derives from Middle English ', from Old English ', from ' ( separative and perfective prefix) + ' (akin to Old English ', 'comb')—literally 'off-combings'. Oakum was at one time recycled from old tarry ropes and cordage, which were painstakingly unravelled and reduced to fibre, termed "picking". The task of picking and preparation was a common occupation in prisons and workhouses, where the young or th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Firestop
A firestop or fire-stopping is a form of passive fire protection that is used to seal around openings and between joints in a fire-resistance-rated wall or floor assembly. Firestops are designed to maintain the fire-resistance rating of a wall or floor assembly intended to impede the spread of fire and smoke. Description Firestops prevent unprotected horizontal and vertical penetrations in a fire-resistance-rated wall or floor assembly from creating a route by which fire and smoke can spread that would otherwise have been fire resisting construction, e.g. where a pipe passes through a firewall. Fire stopping is also to seal around gaps between fire resisting constructions, e.g. the linear gap between a wall and the floor above, in order for construction to form a complete barrier to fire and smoke spread. Opening types Firestops are used in: * Electrical, mechanical, and structural penetrations * Unpenetrated openings (such as openings for future use) * Re-entries of e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mary Rose
The ''Mary Rose'' (launched 1511) is a carrack-type warship of the English Tudor navy of King Henry VIII. She served for 33 years in several wars against France, Scotland, and Brittany. After being substantially rebuilt in 1536, she saw her last action on 1545. She led the attack on the galleys of a French invasion fleet, but sank in the Solent, the strait north of the Isle of Wight. The wreck of the ''Mary Rose'' was located in 1971 and was raised on 11 October 1982 by the Mary Rose Trust in one of the most complex and expensive maritime salvage projects in history. The surviving section of the ship and thousands of recovered artefacts are of great value as a Tudor period time capsule. The excavation and raising of the ''Mary Rose'' was a milestone in the field of maritime archaeology, comparable in complexity and cost to the raising of the 17th-century Swedish warship '' Vasa'' in 1961. The ''Mary Rose'' site is designated under the Protection of Wrecks Act 1973 by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boat Building
Boat building is the design and construction of boats and their systems. This includes at a minimum a hull, with propulsion, mechanical, navigation, safety and other systems as a craft requires. Construction materials and methods Wood Wood is the traditional boat building material used for hull and spar construction. It is buoyant, widely available and easily worked. It is a popular material for small boats (of e.g. length; such as dinghies and sailboats). Its abrasion resistance varies according to the hardness and density of the wood and it can deteriorate if fresh water or marine organisms are allowed to penetrate the wood. Woods such as Teak, Totara and some cedars have natural chemicals which prevent rot whereas other woods, such as Pinus radiata, will rot very quickly. The hull of a wooden boat usually consists of planking fastened to frames and a keel. Keel and frames are traditionally made of hardwoods such as oak while planking can be oak but is more often ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sanitary Sewer
A sanitary sewer is an underground pipe or tunnel system for transporting sewage from houses and commercial buildings (but not stormwater) to a sewage treatment plant or disposal. Sanitary sewers are a type of gravity sewer and are part of an overall system called a "sewage system" or sewerage. Sanitary sewers serving industrial areas may also carry industrial wastewater. In municipalities served by sanitary sewers, separate storm drains may convey surface runoff directly to surface waters. An advantage of sanitary sewer systems is that they avoid combined sewer overflows. Sanitary sewers are typically much smaller in diameter than combined sewers which also transport urban runoff. Backups of raw sewage can occur if excessive stormwater inflow or groundwater infiltration occurs due to leaking joints, defective pipes etc. in aging infrastructure. Purpose Sewage treatment is less effective when sanitary waste is diluted with stormwater, and combined sewer overflows o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carrack
A carrack (; ; ; ) is a three- or four- masted ocean-going sailing ship that was developed in the 14th to 15th centuries in Europe, most notably in Portugal. Evolved from the single-masted cog, the carrack was first used for European trade from the Mediterranean to the Baltic and quickly found use with the newly found wealth of the trade between Europe and Africa and then the trans-Atlantic trade with the Americas. In their most advanced forms, they were used by the Portuguese for trade between Europe and Asia starting in the late 15th century, before eventually being superseded in the 17th century by the galleon, introduced in the 16th century. In its most developed form, the carrack was a carvel-built ocean-going ship: large enough to be stable in heavy seas, and capacious enough to carry a large cargo and the provisions needed for very long voyages. The later carracks were square-rigged on the foremast and mainmast and lateen- rigged on the mizzenmast. They had a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Severn Trow, Spry
, name_etymology = , image = SevernFromCastleCB.JPG , image_size = 288 , image_caption = The river seen from Shrewsbury Castle , map = RiverSevernMap.jpg , map_size = 288 , map_caption = Tributaries (light blue) and major settlements on and near the Severn (bold blue) , pushpin_map = , pushpin_map_size = 288 , pushpin_map_caption= , subdivision_type1 = Country , subdivision_name1 = England and Wales , subdivision_type2 = , subdivision_name2 = , subdivision_type3 = Region , subdivision_name3 = Mid Wales, West Midlands, South West , subdivision_type4 = Counties , subdivision_name4 = Powys, Shropshire, Worcestershire, Gloucestershire , subdivision_type5 = Cities , subdivision_name5 = Shrewsbury, Worcester, Gloucester, Bristol , length = , width_min = , width_avg = , width_max = , depth_min = , depth_avg = ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Severn Trow
A trow was a type of cargo boat found in the past on the rivers Severn and Wye in Great Britain and used to transport goods. Features The mast could be taken down so that the trow could go under bridges, such as the bridge at Worcester and the many bridges up and downstream. The mast was stepped in a three sided frame open at the rear but closed with an iron pin or rope lashing. From the top of the mast a forestay ran down to the bow winch. To lower the mast the pin was removed and the winch slackened off to let the mast fall towards the stern. The reverse operation pulled the mast up. Despite their flat-bottomed hull form which made volume available for their load and permitted drying out on muddy banks in the tidal area where they operated, Trows were seaworthy. For example, with an added keel the Droitwich Trow ''Hastings'' is recorded as taking 90 tons of salt from Droitwich to France across the English Channel. The flat-bottomed trows sailed on the sea by hauling a lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ezekiel
Ezekiel (; he, יְחֶזְקֵאל ''Yəḥezqēʾl'' ; in the Septuagint written in grc-koi, Ἰεζεκιήλ ) is the central protagonist of the Book of Ezekiel in the Hebrew Bible. In Judaism, Christianity, and Islam, Ezekiel is acknowledged as a Hebrew prophet. In Judaism and Christianity, he is also viewed as the 6th-century BCE author of the Book of Ezekiel, which reveals prophecies regarding the destruction of Jerusalem, and the restoration to the land of Israel. The name Ezekiel means "God is strong" or "God strengthens". In the Bible The author of the Book of Ezekiel presents himself as Ezekiel, the son of Buzi, born into a priestly ( kohen) lineage. Apart from identifying himself, the author gives a date for the first divine encounter which he presents: "in the thirtieth year". Ezekiel describes his calling to be a prophet by going into great detail about his encounter with God and four "living creatures" with four wheels that stayed beside the creatures. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biblical Prophet
In religion, a prophet or prophetess is an individual who is regarded as being in contact with a divine being and is said to speak on behalf of that being, serving as an intermediary with humanity by delivering messages or teachings from the supernatural source to other people. The message that the prophet conveys is called a prophecy. Claims of prophethood have existed in many cultures and religions throughout history, including Judaism, Christianity, Islam, ancient Greek religion, Zoroastrianism, Manichaeism, Hinduism , and many others. Etymology The English word '' prophet'' is the transliteration of a compound Greek word derived from ''pro'' (before/toward) and ''phesein'' (to tell); thus, a προφήτης (''prophḗtēs'') is someone who conveys messages from the divine to humans, including occasionally foretelling future events. In a different interpretation, it means advocate or speaker. In Hebrew, the word נָבִיא (''nāvî''), "spokesperson", trad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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