Misplaced Pages

#367632

32-413: The original dwelling was built in 1874 as a one-story, central-passage plan structure with a rear ell. It was enlarged in 1878 to add a second story and Italianate -style porch. In 1921, the house was moved to the next lot and further enlarged, with conversion for use as four apartments. The house was attached to a three-story apartment building constructed at its original site. The front facade features

64-407: A CMU wall having much greater lateral and tensile strength than unreinforced walls. "Architectural masonry is the evolvement of standard concrete masonry blocks into aesthetically pleasing concrete masonry units (CMUs)". CMUs can be manufactured to provide a variety of surface appearances. They can be colored during manufacturing or stained or painted after installation. They can be split as part of

96-427: A darker color or an irregular shape. Others may use antique salvage bricks, or new bricks may be artificially aged by applying various surface treatments, such as tumbling. The attempts at rusticity of the late 20th century have been carried forward by masons specializing in a free, artistic style, where the courses are intentionally not straight, instead weaving to form more organic impressions. A crinkle-crankle wall

128-575: A masonry wall is not entirely dependent on the bond between the building material and the mortar; the friction between the interlocking blocks of masonry is often strong enough to provide a great deal of strength on its own. The blocks sometimes have grooves or other surface features added to enhance this interlocking, and some dry set masonry structures forgo mortar altogether. Stone blocks used in masonry can be dressed or rough, though in both examples corners, door and window jambs, and similar areas are usually dressed. Stonemasonry utilizing dressed stones

160-508: A non-staggered bond. The wide selection of brick styles and types generally available in industrialized nations allow much variety in the appearance of the final product. In buildings built during the 1950s-1970s, a high degree of uniformity of brick and accuracy in masonry was typical. In the period since then this style was thought to be too sterile, so attempts were made to emulate older, rougher work. Some brick surfaces are made to look particularly rustic by including burnt bricks, which have

192-408: A permanent colored facing (typically composed of polyester resins, silica sand and various other chemicals) to a concrete masonry unit, providing a smooth impervious surface." Glass block or glass brick are blocks made from glass and provide a translucent to clear vision through the block. A masonry veneer wall consists of masonry units, usually clay-based bricks, installed on one or both sides of

224-504: A raised, often molded brick, water table . When built with brick masonry load-bearing walls, decorative detailing often included Flemish bond and English bond . Diapering (diagonal diamond patterns done with darker brick) was also common on gable ends. Masonry Masonry is the craft of building a structure with brick, stone, or similar material, including mortar plastering which are often laid in, bound, and pasted together by mortar . The term masonry can also refer to

256-431: A structurally independent wall usually constructed of wood or masonry. In this context, the brick masonry is primarily decorative, not structural. The brick veneer is generally connected to the structural wall by brick ties (metal strips that are attached to the structural wall, as well as the mortar joints of the brick veneer). There is typically an air gap between the brick veneer and the structural wall. As clay-based brick

288-543: A two-tier porch with fluted Doric columns in the Classical Revival style and multiple entries. In 1990, the structure was restored to its appearance in 1922, when Lady Astor made a speech to 5,000 people from the second-story porch of the house. Named after Civil War veteran and business magnate Chiswell Langhorne , the dwelling was the birthplace of his and his wife's several daughters, all noted for their beauty. Nancy Langhorne (1879-1964) moved to England as

320-478: A wall of a given size. Furthermore, cinder and concrete blocks typically have much lower water absorption rates than brick. They often are used as the structural core for veneered brick masonry or are used alone for the walls of factories, garages, and other industrial-style buildings where such appearance is acceptable or desirable. Such blocks often receive a stucco surface for decoration. Surface-bonding cement , which contains synthetic fibers for reinforcement,

352-606: A young woman, married Waldorf Astor and won his former seat in the British Parliament in 1919. She returned to Virginia in 1922 to visit her birthplace and to promote relations between the important allies. Her visit to Danville received national coverage in the United States and is significant in local history. The building was listed on the National Register of Historic Places in 2006. Owned by

SECTION 10

#1732791412368

384-558: Is a brick wall that follows a serpentine path, rather than a straight line. This type of wall is more resistant to toppling than a straight wall; so much so that it may be made of a single wythe of unreinforced brick and so despite its longer length may be more economical than a straight wall. Blocks of cinder concrete ( cinder blocks or breezeblocks ), ordinary concrete ( concrete blocks ), or hollow tile are generically known as Concrete Masonry Units (CMUs). They usually are much larger than ordinary bricks and so are much faster to lay for

416-456: Is known as ashlar masonry, whereas masonry using irregularly shaped stones is known as rubble masonry . Both rubble and ashlar masonry can be laid in coursed rows of even height through the careful selection or cutting of stones, but a great deal of stone masonry is uncoursed. Solid brickwork is made of two or more wythes of bricks with the units running horizontally (called stretcher bricks) bound together with bricks running transverse to

448-549: Is only as long as the wire they are composed of and if used in severe climates (such as shore-side in a salt water environment) must be made of appropriate corrosion-resistant wire. Most modern gabions are rectangular. Earlier gabions were often cylindrical wicker baskets, open at both ends, used usually for temporary, often military, construction. Similar work can be done with finer aggregates using cellular confinement . Masonry walls have an endothermic effect of its hydrates , as in chemically bound water , unbound moisture from

480-717: Is sometimes used in this application and can impart extra strength to a block wall. Surface-bonding cement is often pre-colored and can be stained or painted thus resulting in a finished stucco-like surface. The primary structural advantage of concrete blocks in comparison to smaller clay-based bricks is that a CMU wall can be reinforced by filling the block voids with concrete with or without steel rebar . Generally, certain voids are designated for filling and reinforcement, particularly at corners, wall-ends, and openings while other voids are left empty. This increases wall strength and stability more economically than filling and reinforcing all voids. Typically, structures made of CMUs will have

512-496: Is usually not completely waterproof, the structural wall will often have a water-resistant surface (usually tar paper ) and weep holes can be left at the base of the brick veneer to drain moisture that accumulates inside the air gap. Concrete blocks, real and cultured stones , and veneer adobe are sometimes used in a very similar veneer fashion. Most insulated buildings that use concrete block, brick, adobe, stone, veneers or some combination thereof feature interior insulation in

544-538: The American landscape, but it was also heavily influenced by its formal architectural relatives, the Palladian and Georgian styles with their emphasis on symmetry. The central-passage house was built much like the earlier hall and parlor house, except that its hall and parlor were divided by a central passageway. In fact, in many of the earliest examples a hall-parlor arrangement had a second partition added inside

576-818: The Lady Astor Preservation Trust, it is located in the Danville Historic District and is open to the public on Saturday afternoons or by appointment. This article about a property in Danville, Virginia on the National Register of Historic Places is a stub . You can help Misplaced Pages by expanding it . Central-passage house The central-passage house , also known variously as central hall plan house , center-hall house , hall-passage-parlor house , Williamsburg cottage , and Tidewater-type cottage ,

608-406: The building units (stone, brick, etc.) themselves. The common materials of masonry construction are bricks and building stone , rocks such as marble , granite , and limestone , cast stone , concrete blocks , glass blocks , and adobe . Masonry is generally a highly durable form of construction. However, the materials used, the quality of the mortar and workmanship, and the pattern in which

640-534: The concrete block, and the poured concrete if the hollow cores inside the blocks are filled. Masonry can withstand temperatures up to 1,000 °F (538 °C) and it can withstand direct exposure to fire for up to 4 hours. In addition to that, concrete masonry keeps fires contained to their room of origin 93% of the time. For those reasons, concrete and masonry units hold the highest flame spread index classification, Class A. Fire cuts can be used to increase safety and reduce fire damage to masonry buildings. From

672-648: The cores remain unfilled. Filling some or all of the cores with concrete or concrete with steel reinforcement (typically rebar ) offers much greater tensile and lateral strength to structures. One problem with masonry walls is that they rely mainly on their weight to keep them in place; each block or brick is only loosely connected to the next via a thin layer of mortar. This is why they do not perform well in earthquakes, when entire buildings are shaken horizontally. Many collapses during earthquakes occur in buildings that have load-bearing masonry walls. Besides, heavier buildings having masonry suffer more damage. The strength of

SECTION 20

#1732791412368

704-498: The end of the 18th century. Also, the earliest examples display some asymmetry, but this was quickly superseded by a strictly symmetrical facade. It usually employed the "double square" formula, that is, the house was twice as long as it was high. Timber-framed with weatherboarding and brick examples are known equally. Stylistic elements that were typical of the type were massive bookend chimneys with rectangular caps, flat or segmented arches over door and window openings, and

736-419: The existing structure or an additional room was added to one side to form a central-passage house. In form it was one-and-a-half storied, on a raised foundation, and had gable -end chimneys. Earlier examples were always one room deep (single-pile) and had a steeply pitched roof. The single-pile eventually gave way to two-room-deep, or double-pile types and a more gentle-sloping roof with dormer windows by

768-411: The form of fiberglass batts between wooden wall studs or in the form of rigid insulation boards covered with plaster or drywall . In most climates this insulation is much more effective on the exterior of the wall, allowing the building interior to take advantage of the aforementioned thermal mass of the masonry. This technique does, however, require some sort of weather-resistant exterior surface over

800-464: The insulation and, consequently, is generally more expensive. Gabions are baskets, usually now of zinc -protected steel ( galvanized steel ) that are filled with fractured stone of medium size. These will act as a single unit and are stacked with setbacks to form a revetment or retaining wall . They have the advantage of being well drained, flexible, and resistant to flood, water flow from above, frost damage, and soil flow. Their expected useful life

832-457: The manufacturing process, giving the blocks a rough face replicating the appearance of natural stone, such as brownstone . CMUs may also be scored, ribbed, sandblasted, polished, striated (raked or brushed), include decorative aggregates, be allowed to slump in a controlled fashion during curing, or include several of these techniques in their manufacture to provide a decorative appearance. "Glazed concrete masonry units are manufactured by bonding

864-490: The other hand, masonry is also used in non-structural applications such as fireplaces chimneys and veneer systems. Brick and concrete block are the most common types of masonry in use in industrialized nations and may be either load-bearing or non-load-bearing. Concrete blocks, especially those with hollow cores, offer various possibilities in masonry construction. They generally provide great compressive strength and are best suited to structures with light transverse loading when

896-410: The top course of blocks in the walls filled with concrete and tied together with steel reinforcement to form a bond beam. Bond beams are often a requirement of modern building codes and controls. Another type of steel reinforcement referred to as ladder-reinforcement , can also be embedded in horizontal mortar joints of concrete block walls. The introduction of steel reinforcement generally results in

928-413: The units are assembled can substantially affect the durability of the overall masonry construction. A person who constructs masonry is called a mason or bricklayer . These are both classified as construction trades . Masonry is one of the oldest building crafts in the world. The construction of Egyptian pyramids, Roman aqueducts, and medieval cathedrals are all examples of masonry. Early structures used

960-597: The wall (called "header" bricks). Each row of bricks is known as a course. The pattern of headers and stretchers employed gives rise to different 'bonds' such as the common bond (with every sixth course composed of headers), the English bond, and the Flemish bond (with alternating stretcher and header bricks present on every course). Bonds can differ in strength and in insulating ability. Vertically staggered bonds tend to be somewhat stronger and less prone to major cracking than

992-511: The weight of the masonry itself to stabilize the structure against lateral movements. The types and techniques of masonry used evolved with architectural needs and cultural norms. Since mid-20th century, masonry has often featured steel-reinforced elements to help carry the tension force present in modern thin, light, tall building systems. Masonry has both structural and non-structural applications. Structural applications include walls, columns, beams, foundations, load-bearing arches, and others. On

Langhorne House - Misplaced Pages Continue

1024-471: Was a vernacular , or folk form, house type from the colonial period onward into the 19th century in the United States . Central-passage house evolved primarily in colonial Maryland and Virginia from the hall and parlor house , beginning to appear in greater numbers by about 1700. It partially developed as greater economic security and developing social conventions transformed the reality of

#367632