Adobe is a building material made from earth and organic materials. Adobe is Spanish for mudbrick, but in some English-speaking regions of Spanish heritage, the term is used to refer to any kind of earth construction. Most adobe buildings rammed earth buildings. Adobe is among the earliest building materials, is used throughout the world. Adobe bricks are rectangular prisms small enough that they can air dry individually without cracking, they can be subsequently assembled, with the application of adobe mud to bond the individual bricks into a structure. There is no standard size, in different regions. In some areas a popular size measured 8 by 4 by 12 inches weighing about 25 pounds; the maximum sizes can reach up to 100 pounds. In dry climates, adobe structures are durable, account for some of the oldest existing buildings in the world. Adobe buildings offer significant advantages due to their greater thermal mass, but they are known to be susceptible to earthquake damage if they are not somehow reinforced.
Cases where adobe structures were damaged during earthquakes include the 1976 Guatemala earthquake, the 2003 Bam earthquake, the 2010 Chile earthquake. Buildings made of sun-dried earth are common throughout the world Adobe had been in use by indigenous peoples of the Americas in the Southwestern United States and the Andes for several thousand years. Puebloan peoples built their adobe structures with handsful or basketsful of adobe, until the Spanish introduced them to making bricks. Adobe bricks were used in Spain from Iron Ages, its wide use can be attributed to its simplicity of design and manufacture, economics. A distinction is sometimes made between the smaller adobes, which are about the size of ordinary baked bricks, the larger adobines, some of which may be one to two yards long; the word adobe has existed for around 4000 years with little change in either pronunciation or meaning. The word can be traced from the Middle Egyptian word ɟbt "mud brick". Middle Egyptian evolved into Late Egyptian, Demotic or "pre-Coptic", to Coptic, where it appeared as τωωβε tōʾpə.
This was adopted into Arabic as الطوب aṭ-ṭawbu or aṭ-ṭūbu, with the definite article al- attached. Tuba, This was assimilated into the Old Spanish language as adobe via Mozarabic. English borrowed the word from Spanish in the early 18th century, still referring to mudbrick construction. In more modern English usage, the term "adobe" has come to include a style of architecture popular in the desert climates of North America in New Mexico, regardless of the construction method. An adobe brick is a composite material made of earth mixed with water and an organic material such as straw or dung; the soil composition contains sand and clay. Straw is useful in binding the brick together and allowing the brick to dry evenly, thereby preventing cracking due to uneven shrinkage rates through the brick. Dung offers the same advantage; the most desirable soil texture for producing the mud of adobe is 15% clay, 10–30% silt, 55–75% fine sand. Another source quotes 15–25% clay and the remainder sand and coarser particles up to cobbles 50 to 250 mm, with no deleterious effect.
Modern adobe is stabilized with Portland cement up to 10 % by weight. No more than half the clay content should be expansive clays, with the remainder non-expansive illite or kaolinite. Too much expansive clay results in uneven drying through the brick, resulting in cracking, while too much kaolinite will make a weak brick; the soils of the Southwest United States, where such construction has been used, are an adequate composition. Adobe walls are load bearing, i.e. they carry their own weight into the foundation rather than by another structure, hence the adobe must have sufficient compressive strength. In the United States, most building codes call for a minimum compressive strength of 300 lbf/in2 for the adobe block. Adobe construction should be designed so as to avoid lateral structural loads that would cause bending loads; the building codes require the building sustain a 1 g lateral acceleration earthquake load. Such an acceleration will cause lateral loads on the walls, resulting in shear and bending and inducing tensile stresses.
To withstand such loads, the codes call for a tensile modulus of rupture strength of at least 50 lbf/in2 for the finished block. In addition to being an inexpensive material with a small resource cost, adobe can serve as a significant heat reservoir due to the thermal properties inherent in the massive walls typical in adobe construction. In climates typified by hot days and cool nights, the high thermal mass of adobe mediates the high and low temperatures of the day, moderating the temperature of the living space; the massive walls require a large and long input of heat from the sun and from the surrounding air before they warm through to the interior. After the sun sets and the temperature drops, the warm wall will continue to transfer heat to the interior for several hou
California is a state in the Pacific Region of the United States. With 39.6 million residents, California is the most populous U. S. the third-largest by area. The state capital is Sacramento; the Greater Los Angeles Area and the San Francisco Bay Area are the nation's second and fifth most populous urban regions, with 18.7 million and 9.7 million residents respectively. Los Angeles is California's most populous city, the country's second most populous, after New York City. California has the nation's most populous county, Los Angeles County, its largest county by area, San Bernardino County; the City and County of San Francisco is both the country's second-most densely populated major city after New York City and the fifth-most densely populated county, behind only four of the five New York City boroughs. California's $3.0 trillion economy is larger than that of any other state, larger than those of Texas and Florida combined, the largest sub-national economy in the world. If it were a country, California would be the 5th largest economy in the world, the 36th most populous as of 2017.
The Greater Los Angeles Area and the San Francisco Bay Area are the nation's second- and third-largest urban economies, after the New York metropolitan area. The San Francisco Bay Area PSA had the nation's highest GDP per capita in 2017 among large PSAs, is home to three of the world's ten largest companies by market capitalization and four of the world's ten richest people. California is considered a global trendsetter in popular culture, innovation and politics, it is considered the origin of the American film industry, the hippie counterculture, fast food, the Internet, the personal computer, among others. The San Francisco Bay Area and the Greater Los Angeles Area are seen as global centers of the technology and entertainment industries, respectively. California has a diverse economy: 58% of the state's economy is centered on finance, real estate services and professional, scientific and technical business services. Although it accounts for only 1.5% of the state's economy, California's agriculture industry has the highest output of any U.
S. state. California is bordered by Oregon to the north and Arizona to the east, the Mexican state of Baja California to the south; the state's diverse geography ranges from the Pacific Coast in the west to the Sierra Nevada mountain range in the east, from the redwood–Douglas fir forests in the northwest to the Mojave Desert in the southeast. The Central Valley, a major agricultural area, dominates the state's center. Although California is well-known for its warm Mediterranean climate, the large size of the state results in climates that vary from moist temperate rainforest in the north to arid desert in the interior, as well as snowy alpine in the mountains. Over time and wildfires have become more pervasive features. What is now California was first settled by various Native Californian tribes before being explored by a number of European expeditions during the 16th and 17th centuries; the Spanish Empire claimed it as part of Alta California in their New Spain colony. The area became a part of Mexico in 1821 following its successful war for independence but was ceded to the United States in 1848 after the Mexican–American War.
The western portion of Alta California was organized and admitted as the 31st state on September 9, 1850. The California Gold Rush starting in 1848 led to dramatic social and demographic changes, with large-scale emigration from the east and abroad with an accompanying economic boom; the word California referred to the Baja California Peninsula of Mexico. The name derived from the mythical island California in the fictional story of Queen Calafia, as recorded in a 1510 work The Adventures of Esplandián by Garci Rodríguez de Montalvo; this work was the fifth in a popular Spanish chivalric romance series that began with Amadis de Gaula. Queen Calafia's kingdom was said to be a remote land rich in gold and pearls, inhabited by beautiful black women who wore gold armor and lived like Amazons, as well as griffins and other strange beasts. In the fictional paradise, the ruler Queen Calafia fought alongside Muslims and her name may have been chosen to echo the title of a Muslim leader, the Caliph. It's possible.
Know ye that at the right hand of the Indies there is an island called California close to that part of the Terrestrial Paradise, inhabited by black women without a single man among them, they lived in the manner of Amazons. They were robust of body with great virtue; the island itself is one of the wildest in the world on account of the craggy rocks. Shortened forms of the state's name include CA, Cal. Calif. and US-CA. Settled by successive waves of arrivals during the last 10,000 years, California was one of the most culturally and linguistically diverse areas in pre-Columbian North America. Various estimates of the native population range from 100,000 to 300,000; the Indigenous peoples of California included more than 70 distinct groups of Native Americans, ranging from large, settled populations living on the coast to groups in the interior. California groups were diverse in their political organization with bands, villages, on the resource-rich coasts, large chiefdoms, such as the Chumash and Salinan.
Trade, intermarriage a
Indigenous peoples of the Americas
The indigenous peoples of the Americas are the Pre-Columbian peoples of North and South America and their descendants. Although some indigenous peoples of the Americas were traditionally hunter-gatherers—and many in the Amazon basin, still are—many groups practiced aquaculture and agriculture; the impact of their agricultural endowment to the world is a testament to their time and work in reshaping and cultivating the flora indigenous to the Americas. Although some societies depended on agriculture, others practiced a mix of farming and gathering. In some regions the indigenous peoples created monumental architecture, large-scale organized cities, city-states, states and empires. Among these are the Aztec and Maya states that until the 16th century were among the most politically and advanced nations in the world, they had a vast knowledge of engineering, mathematics, writing, medicine and irrigation, mining and goldsmithing. Many parts of the Americas are still populated by indigenous peoples.
At least a thousand different indigenous languages are spoken in the Americas. Some, such as the Quechuan languages, Guaraní, Mayan languages and Nahuatl, count their speakers in millions. Many maintain aspects of indigenous cultural practices to varying degrees, including religion, social organization and subsistence practices. Like most cultures, over time, cultures specific to many indigenous peoples have evolved to incorporate traditional aspects but cater to modern needs; some indigenous peoples still live in relative isolation from Western culture and a few are still counted as uncontacted peoples. Indigenous peoples of the United States are known as Native Americans or American Indians and Alaska Natives. Application of the term "Indian" originated with Christopher Columbus, who, in his search for India, thought that he had arrived in the East Indies; those islands came to be known as the "West Indies", a name still used. This led to the blanket term "Indies" and "Indians" for the indigenous inhabitants, which implied some kind of racial or cultural unity among the indigenous peoples of the Americas.
This unifying concept, codified in law and politics, was not accepted by the myriad groups of indigenous peoples themselves, but has since been embraced or tolerated, by many over the last two centuries. Though the term "Indian" does not include the culturally and linguistically distinct indigenous peoples of the Arctic regions of the Americas—such as the Aleuts, Inuit or Yupik peoples, who entered the continent as a second more recent wave of migration several thousand years before and have much more recent genetic and cultural commonalities with the aboriginal peoples of the Asiatic Arctic Russian Far East—these groups are nonetheless considered "indigenous peoples of the Americas". Indigenous peoples are known in Canada as Aboriginal peoples, which includes not only First Nations and Arctic Inuit, but the minority population of First Nations-European mixed race Métis people who identify culturally and ethnically with indigenous peoplehood; this is contrasted, for instance, to the American Indian-European mixed race mestizos of Hispanic America who, with their larger population, identify as a new ethnic group distinct from both Europeans and Indigenous Americans, but still considering themselves a subset of the European-derived Hispanic or Brazilian peoplehood in culture and ethnicity.
The term Amerindian and its cognates find preferred use in scientific contexts and in Quebec, the Guianas and the English-speaking Caribbean. Indígenas or pueblos indígenas is a common term in Spanish-speaking countries and pueblos nativos or nativos may be heard, while aborigen is used in Argentina and pueblos originarios is common in Chile. In Brazil, indígenas or povos indígenas are common if formal-sounding designations, while índio is still the more often-heard term and aborígene and nativo being used in Amerindian-specific contexts; the Spanish and Portuguese equivalents to Indian could be used to mean any hunter-gatherer or full-blooded Indigenous person to continents other than Europe or Africa—for example, indios filipinos. The specifics of Paleo-Indian migration to and throughout the Americas, including the exact dates and routes traveled, are the subject of ongoing research and discussion. According to archaeological and genetic evidence and South America were the last continents in the world to gain human habitation.
During the Wisconsin glaciation, 50–17,000 years ago, falling sea levels allowed people to move across the land bridge of Beringia that joined Siberia to northwest North America. Alaska was a glacial refugium; the Laurentide Ice Sheet covered most of North America, blocking nomadic inhabitants and confining them to Alaska for thousands of years. Indigenous genetic studies suggest that the first inhabitants of the Americas share a single ancestral population, one that developed in isolation, conjectured to be Beringia; the isolat
California Historical Landmark
California Historical Landmarks are buildings, sites, or places in the U. S. state of California that have been determined to have statewide historical landmark significance. Historical significance is determined by meeting at least one of the criteria listed below: The first, only, or most significant of its type in the state or within a large geographic region. California Historical Landmarks of number 770 and above are automatically listed in the California Register of Historical Resources. By contrast, a site, feature, or event, of local significance may be designated as a California Point of Historical Interest. List of California Historical Landmarks by county National Historic Sites National Register of Historic Places listings in California Los Angeles Historic-Cultural Monument List of San Francisco Designated Landmarks Johnson, Marael. Why Stop? A Guide to California Roadside Historical Markers. Houston, TX: Gulf Publishing Company. P. 213. ISBN 9780884159230. OCLC 32168093. Official OHP—California Office of Historic Preservation website OHP: California Historical Sites searchpage — links to lists by county
Building restoration describes a particular treatment approach and philosophy within the field of architectural conservation. According to the U. S. Secretary of Interior's standards, "Restoration is said as the act or process of depicting the form and character of a property as it appeared at a particular period of time by means of the removal of features from other periods in its history and reconstruction of missing features from the restoration period; the limited and sensitive upgrading of mechanical and plumbing systems and other code-required work to make properties functional is appropriate within a restoration project."In the United States restoration is different from preservation by allowing the removal of historic materials to create an accurate portrayal of a particular time period, not the original or final time periods. In the field of historic preservation, building restoration is the action or process of revealing, recovering or representing the state of a historic building, as it appeared at a particular period in its history, while protecting its heritage value.
Restoration work may be performed to reverse decay, or alterations made to the building Since Historic Building Conservation is more about fostering a deep appreciation for these famous structures and learning more about why they exist, rather than just keeping historic structures standing tall and looking as beautiful as true historic building preservation aims for a high level of authenticity replicating historic materials and techniques as much as possible, ideally using modern techniques only in a concealed manner where they will not compromise the historic character of the structure's appearance. For instance a restoration might involve the replacement of outdated heating and cooling systems with newer ones, or the installation of climate controls that never existed at the time of building after careful study. Tsarskoye Selo, the complex of former royal palaces outside St Petersburg in Russia is an example of this sort of work. Exterior and interior paint colors present similar problems over time.
Air pollution, acid rain, sun take a toll, many layers of different paint exist. Historic paint analysis of old paint layers now allow a corresponding chemical recipe and color to be re-produced, but this is only a beginning as many of the original materials are either unstable or in many cases environmentally unsound. Many eighteenth century greens were made with arsenic and lead, materials no longer allowed in paints. Another problem occurs. For example, in the early to mid-19th century, some browns were produced from bits of ground mummies. In cases like this the standards allow other materials with similar appearance to be used and organizations like Britain's National Trust for Places of Historic Interest or Natural Beauty will work with a historic paint color re-creator s to replicate the antique paints in durable and environmentally safe materials. In the United States the National Trust for Historic Preservation is a helpful resource; the polychrome painted interiors of the Vermont State House and Boston Public Library are examples of this type of heritage restoration.
In the United States, the Secretary of Interior is the head of the National Park Service which owns and maintains thousands of historic buildings and has been a leader in historic preservation for over 100 years. The standards were developed in 1975 and updated in 1992; the standards deal with the "...materials, finishes and spatial relationships..." of historic buildings and are divided into preservation, rehabilitating and reconstruction. It helps to understand what building restoration is in context with the other standards: Preservation "places a high premium on the retention of all historic fabric through conservation and repair." All materials added to a building over its life are retained and only work, necessary to protect it from deterioration is carried out. Rehabilitation is a standard for preservation but is more lenient because it presumes the building is so deteriorated that it needs some repairs to prevent further deterioration. Restoration includes preservation, leaving as much material untouched as possible, reconstruction to replace missing elements, repair work to bring the building to a accurate condition in one particular time period.
This may include removing some historic building elements to make the building accurate for a specific date in history. Reconstruction allows the re-creation of a missing building or element in all new, appropriate materials; the first steps in a restoration to the Secretary's standards are to study the building and choose a time period for the restoration. The new use of the building should be consistent with the original use or at least with the time period of the restoration. Materials which were added after the chosen time period must be documented and may be removed while preserving and repairing the appropriate materials. Materials missing may be reconstructed to "...match the old in design, texture, where possible, materials." Which are evidence based. Modern chemical and physical treatments may be used if they do not damage the historic materials, archaeological resources will be preserved or mitigated; the standards recognize that there are inherent conflicts with modern codes and regulations for energy efficiency, health and accessibility.
The standards allow sensitive alterations of historic buildings to meet the spirit of the codes and regulations, if necessary. Storm restoration is the restoring of a building due t
Isaac Lankershim was a German-born American landowner and pioneer in California. He was the owner of 60,000 acres in California. Lankershim was born in Nuremberg, Kingdom of Bavaria on April 8, 1818, he emigrated to the United States at eighteen years old. Lankershim settled in St. Louis and worked in the grain and livestock shipping business. In 1854, Lankershim moved west to the Napa Valley in California. A year in 1855, he sowed and harvested 1,000 acres of wheat in Solano County, California. Shortly after, he expanded to over 14,000 acres near California. In 1868, he purchased a bigger ranch in San Diego and grew wheat. In 1860, the rest of his family moved from St. Louis to California, he established an office in San Francisco, California. In the late 1860s, Lankershim moved to Los Angeles, where he became associated with a businessmen named Harris Newmark. In 1869, Isaac purchased 60,000 acres of the San Fernando Valley from Pio Pico for US$115,000 together with other businessmen from San Francisco, known as the San Fernando Valley Farm Homestead Association.
These acres included what is now Woodland Hills, Encino, Sherman Oaks, Van Nuys and North Hollywood. By 1873, they raised 40,000 sheep on the ranch; when wool prices fell, they grew wheat instead. To take the wheat from the valley to Santa Monica, California, he built a wagon path now known as Interstate 405. In 1876, he turned it into a toll road. With his son-in-law, Isaac Newton Van Nuys, Lankershim started the Los Angeles Farming and Milling Co, they took over full ownership of the San Fernando Valley Ranch Company, they established the Lankershim Ranch Land & Water Co. a 12,000-acre real estate development in what is now known as North Hollywood, Los Angeles. Lankershim married Annis Lydia Moore, an English immigrant in 1842, he converted to the Baptist faith. They had a son, James Boon Lankershim, a daughter, Susanna Lankershim, who married Isaac Newton Van Nuys, he died on April 10, 1882. Lankershim Boulevard in Los Angeles is named for the Lankershim family
The Tongva are Native Americans who inhabited the Los Angeles Basin and the Southern Channel Islands, an area covering 4,000 square miles. The Tongva are known as the Gabrieleño and Fernandeño, names derived from the Spanish missions built on their territory: Mission San Gabriel Arcángel and Mission San Fernando Rey de España. Along with the neighboring Chumash, the Tongva were the most powerful indigenous people to inhabit Southern California. At the time of European contact, they may have numbered 5,000 to 10,000. Many lines of evidence suggest that the Tongva are descended of Uto-Aztecan-speaking peoples from Nevada who moved southwest into coastal Southern California 3,500 years ago; these migrants either pushed out the Hokan-speaking peoples in the region. By 500 AD, the Tongva had come to occupy all the lands now associated with them. A hunter-gatherer society, the Tongva traded with neighboring peoples. Over time, scattered communities came to speak distinct dialects of the Tongva language, part of the Takic subgroup of the Uto-Aztecan language family.
There may have been five or more such dialects. The Tongva language became extinct in the twentieth century, but a reconstructed form continues to be spoken today. Initial Spanish exploration of the Los Angeles area occurred in 1542, but sustained contact with the Tongva came only after Mission San Gabriel Arcángel was constructed in 1771; this marked the beginning of an era of forced relocation and exposure to Old World diseases, leading to the rapid collapse of the Tongva population. At times the Tongva violently resisted Spanish rule, such as the 1785 rebellion led by the female chief Toypurina. In 1821, Mexico gained its independence from Spain and the government sold mission lands to ranchers, forcing the Tongva to culturally assimilate. Three decades California was ceded to the United States following the Mexican–American War; the US government signed treaties with the Tongva, promising 8.5 million acres of land for reservations, but these treaties were never ratified. By the turn of the 20th century, the Island Tongva had disappeared and the mainland communities were nearing extinction.
The endonym Tongva was recorded by American ethnographer C. Hart Merriam in 1903 and has been adopted by scholars and descendants, although some prefer the endonym Kizh. Since 2006, there have been four organizations claiming to represent the Tongva Nation: the Gabrielino-Tongva Tribe, known as the "hyphen" group from the hyphen in their name. Two of the groups are the result of a hostile split over the question of building an Indian casino. In 1994, the state of California recognized the Tongva "as the aboriginal tribe of the Los Angeles Basin," but no group representing the Tongva has attained recognition by the federal government. In 2008, more than 1,700 people claimed partial ancestry; the first record of an endonym for the Tongva people was Kizh, from 1846. Although subsequent authors equated this with the word for "house", Hale gives the word for house as kītç in a list where the language was called "Kīj", suggesting that the words were distinct; the term Kizh was used at that time to designate the language, the first comprehensive publication on the language used it.
In 1875, Yarrow indicated. He reported that the natives called themselves Tobikhar, meaning "settlers", spoke exclusively Spanish. In 1885, Hoffman referred to the natives as Tobikhar; the word Tongva was recorded by Merriam in 1903 from a single informant. Merriam could not pronounce the village name Toviscangna He ( abbreviated or spelled it Tong-vā; the name Tongva has become preferred as a self-designation since the 1990s, although either "Gabrieleño" or "Gabrielino" is part of every official name. The territory which in historical times was occupied by the kizh People of the willow houses had been inhabited for more than 10,000 years. A prehistoric milling area estimated to be 8,000 years old was discovered in 2006 at the base of the San Gabriel Mountains near Azusa, California; the find yielded arrowheads and stone slabs used to grind seeds as well as tools and implements, but no human or animal bones. The Chowigna site in Palos Verdes, excavated in the 1930s, dates back 7,100 years or more.
In 2007 and early 2008, over 174 ancient American Indian remains were unearthed by archaeologists at a development site of Brightwater Hearthside Homes in the Bolsa Chica Mesa area in Huntington Beach, California. This land was once shared by the Acjachemem tribes; the site was in legal limbo for years before Hearthside was given permission to start construction of over 300 homes. The Tongva and Acjachemem Indians are in dispute over the remains; as speakers of a language of the Uto-Aztecan family, the remote ancestors of the Tongva coalesced as a people in the Sonoran Desert, between 3,000 and 5,000 years ago. This was a center of that language family; the diversity within the Takic group is "moderately deep". The division of the Tongva-Serrano group into the separate Tongva and Serrano peoples is more recent, may have been influenced by