CASEMENT WINDOWS

Post 688 –by Gautam Shah

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Bay Casement Boothbay Maine Ocean Harbor Window

Casement windows were the most common house-windows, before the sash windows were devised. The shutters of casement windows are hinged on the side, and open either inward and outward. Casement windows provide a full open aperture compared to double hung or sliding windows. The casement shutters could be solid, opaque panelled or glaze panelled. Glazing panes are fixed to the shutter by beading or putty compounds.

Window Wood Rustic

Casement shutters opening inward cause obstruction if there is insufficient parking space for the opened shutter. Inward opening shutters also interfere with window treatments such as curtains, blinds, etc.

The shutters, if of small width open with a handle cum locking device, and if of large width require a crank or lever to open. A wind stay, or a friction hinge is necessary to keep the shutter open in windy conditions, and an espagnolette is used for locking. A casement window is easy to operate with its long armed handle mechanism and so ideal for difficult to reach situations, such as places above cabinets or counter tops. Casement windows open out on nominal hinges or offset hinges that open the shutter little away from the side to allow cleaning, glazing fixing and painting of the exterior face. These are critical issues for casement windows that have protection bars, or are located on upper floors.

Curtain Mountains Window Architecture Outlook

Single casement windows are used on side lites as besides a door or fixed window. Average width of wooden casement windows is 400 to 500. Larger widths up to 600 are possible with friction hinges. Very tall casement windows require patent bolts at both the top and bottom ends to shut a window or keep it open in heavy winds.

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Double casement windows are of two types: one where two shutters meet over a mid member, and the other, where the two shutters meet over each other. The later is called a French window, it opens unobstructed in the centre.

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The casement shutter could be single, opening on left or right side. Casement windows with double shutters, open on left and right sides, or in the middle like the pages of a book. Multiple casement windows have even numbers of shutters divided into sets of two each, all shutters open on one side, or symmetry is created by opening half numbers of shutters on either side.

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Casement windows typically are hinged at the sides, but if top hinged are called awning windows, and if bottom hinged are called hopper windows.

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Hopper Windows: A hopper window is a bottom hung a casement window that opens similarly to a draw bridge or a coal-pit receptor or hopper, typically opening to the outside. Hopper windows are used as cellar or subterranean opening.

Hopper Light: Hopper Ventilator: These have inward-opening shutter hinged at the bottom, usually forming the upper section of a door or window.

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Awning Window: An awning window is a casement window that is hung horizontally, hinged on top, so that it swings outward like an awning or a weather shed. Awnings are transom lites, used in upper sections of doors and windows as a ventilator.

9 French Windows 6853387755_6000dff2c0_o

French Window: A French window is really a type of door with a small threshold. It is also called a French door. Two casement sashes hinged on the sides to open in the middle. The shutters nearly extend to the floor and also serve as a door to a porch, garden, verandah, gallery or terrace. It is double shuttered, and both of which for the full height of the shutters, have single or multiple panes of glass. It may have a secondary set of solid or louvered shutters opening to the interior or exterior side.

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Folding Casement: Casement windows hinged together so they may fold into a confined space, such as within the wall thickness. Small width shutters also makes it easier to close without stretching out too much. Folding casements are often auxiliary shutters, such as storm shutters or Venetian shutters on the outer face or fly-mesh shutters on the inner face.

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All types of eaves and window casement shutters, projecting out, were banned to prevent spread of fire along the wall, after the great fire in London in 1707. And these forced adoption of Sash windows (opening upward or downward).

13 geograph-2825199-by-Mike-Kirby

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STONES -viability now -1

Post 687by Gautam Shah

. Part 1 of Two articles

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We today have greater capacity to search over wider terrains and also reach at sub surface locations. Exploitation of stones as collection from the surface or extraction from various depths is not a major technological problem. There are other issues that are forcing reappraisal of Stone as the viable material of construction. The issues are > economics of transportation, wastage in production, and reuse of the material as debris and production residues.

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Stones, like the clays-soils are universal materials of construction and require very simple technology. There are Three essential sources of stone: 1 Surface collected stones, 2 Extracted stones, 3 Wastes and debris stones. Use of the surface collected stones in original size-form is easiest. Such stones, however, require down sizing and form dressing, before carriage to a place of use. Extracted stones are surface protruding and subterranean mass. These are often stratified or layered. Stone extraction causes ecological devastation due to removal of the top burden, large volume of reject-mass, and wastage of local cleaning, cutting and size dressing. Wastes and debris stones are man-made endeavours. Wastes occur at points of extraction and location of constructions, whereas debris occurs due to the demolition of structures. These need sorting, cleaning and transportation.

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To make Stones viable now, Technological Developments and Materials Management are required. Stones are used for their mass, surface and structural strength. These can be exploited further by new design, joint technology, assembly methods, formation of composites, improved structural geometry and conversion to different materials (chemicals).

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1 Extend the Surface Area: Stones are valued for their surface qualities and the prime need is to increase the surface area. The extended surface reduces the mass / weight of the stones. The surface area of the stones can be enlarged by two basic methods: by Thin Sectioning and by Amalgamation of bits and pieces, which otherwise end up as a collection and production wastes. Other methods of optimizing the surfaces are to endow new sensory qualities and surface properties. Many exciting technologies are now available.

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2 Exploring structural properties: Stones have certain directional structural properties which can be exploited and reinforced. The efforts start with new ways of excavation, extraction and conversion of the material. Other common processes are selection, orientation, rational sectioning and controlled aeration-seasoning. Structural potential of stones can also be exploited by developing new areas of usage and new techniques of construction.

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3 Stone’s Combinative formations: Traditionally stone composites have had lime and cement as the matrix component. The explorations now relate to composites with new forms of filler arrangements and new types of a matrix.

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4 Designing geometrical or spatial compositions: Stones shows great promise in offering radically different materials’ combinative formations. The formations include various ways of combining or ‘synthesizing’ materials of diverse nature, such as, with metals, polymers, ceramics etc.

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Stones have naturally variegated constitution and surfaces. These, provide with inexhaustible opportunities to work to many different forms, sizes, and finishes. Though, qualitative consistency of man-made materials poses a great challenge to multifarious nature of stone materials. Stones have structural attributes, often called Engineering characteristics, which regulate their usefulness for conversion to: Building or Dimension stones, Veneered or thin slabs and for crushing. Similarly stones also exhibit very distinctive sensory properties that govern their use as a facing material in the form of building blocks, cladding and flooring slabs.

The opportunities of intervention operate on two fronts: Improvisations over existing methods and Adoption of radically different technologies.

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Part 1 of 2 articles

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DESIGN, MOTIF, PATTERN -Part 1 -Issues of Design 25

Post 686 –by Gautam Shah

.motifs are strokes

Motifs are self-sustaining elements. Motifs can be linear outlines, solid filled-in planes, solid objects, or fractals. A motif may look like a familiar object, but need not be a representation or symbol. In other words, a motif may not have any abstract conveyance, yet may carry an associated or interpretive meaning. Motifs may have similarities, which are ‘here’ or in some remembrances. Motif recognition is a matter of perception, and so a personal affair. But there usually are many concurrences, and so some commonality is perceived.

2 motifs

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A Motif, as a self sustaining element, is nominally oblivious of the happenings in the surroundings. But motifs have the potential to be part of a pattern, a larger whole. Such a fate is evident, because a motif while retaining its ‘fundamental trope’ subsists through several of the avatars. The changes occur through scaling, orientation, colours, or even some degree of form distortions.

3 motif may seem familiar without being a symbolicimage or a representation

Metal Iron Railings Wrought Iron Ornament

Motifs are impressionistic configurations, captured from the surroundings. The impression is expressed for posterity or communication by in-forming it over a medium or moulding it with materials. In both the cases, the form-shaping motif is affected by the formative materials, specific tools, techniques and the body posture. The motif as the ‘stroke’ matures through several conversions. The process of maturation endows new meanings to the motif. The ‘stroking’ can become extraordinarily florid to turn into a style.

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Stylized Motifs have their own vocabulary of placement, associated linkages, scaling and permissible reformations. Such governance remains tied to the materials, craft-processes, associated persons (extended family, cast, creed, locality), and the period. The motifs begin to govern the pattern. The stylized motifs and patterns thereof, have a deep lineage. The stylized motifs, however, change when new materials and tools arrive to reform the techniques. New ‘strokes’ of motif creation offer different set of patterns. The changes first occur in the scale, line formation (thickness and consistency), the fill-in colours and textures, and shape twisting. The original and the differentiated motifs, both form a distinguished motif culture.

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The motif culture can be so overwhelming that other crafts begin to accommodate it. An evolved motif in Embroidery or fabric weaving, may enter diverse fields of jewellery, metal crafts, painting, pottery, interior decoration, architectonic elements etc. A motif in new environment (society, materials, crafts or tools) develops with new forms of ‘strokes’ of motif creation. These occur on sheer strength of the Graphical value. New patterns generated for the graphical value can reflect some links with the original civilization. The trace of the original flavour remains, where the motifs are adopted as a replacement of products, sensorial variation and for political, cultural or social incentive. But where the motif is accepted purely as technological input, a brutal severance from the original connection occurs.

complex pattern out of several motifs chikkamagalur amruthapura kirthimukha india wikipedia image by

Primary motif is a stroke of straight or single curvature. The stroke has two ends, and are the potential connections of first order. Other likely nodes are the tangential or the crossings. Multi-stroke motifs have closed ended or open-ended shapes. Motifs have potential nodes of connections and togetherness. Motifs with geometric strokes such as lines (vertical, horizontal, inclined) or curvilinear seem familiar. In comparison Stylized motifs are re-engineered forms of real objects. A motif cannot be abstracted unless it carries a meaning, as a symbolic representation. The symbolic representation is about ‘abstract or non-tangible concepts’ such as movement, vibrant, static, serenity etc. There is a tendency to find meaningful object in seemingly chaotic situation. In case of motif, the recognition of geometry (form), proximity (relationships), style or an abstract objective, all help in finding motive for it.

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The phenomenon of finding meaningful patterns in meaningless noise is called patternicity , and conversely, not perceiving patterns that are present in the visual stimulus is called apatternicity.

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A motif coexists with other motifs, and is perceived if within a field of perception. Basic togetherness is of proximity. Other coexistence occur through the incidences of similarity, scaled identity, mirroring images, reverse positioning (upside down), direction, hierarchical order and density of placement define the nearness. Motifs overlap, partially converge, or merely touch at the edge. Such connections ensues pattern making relationships.

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A motif establishes several sets of relationships to form a pattern: mutual distancing (density), position from the field edges, and confirmation of the operative environmental forces (gravity, magnetic field, air, temperature stresses). The density is defined by size, scale and form of the motifs. A pattern is recognized through following characteristics: Congruity (rotations, translations, reflections), Similarity (scale, orientation), and Isotonicity (similar interpretive or metaphoric meaning). A motif need not be central to a pattern, but rather recurrent element.

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A motif, its pattern, whatever we visually perceive, is subjective, situational and circumstantial experience. The visual perception is formed by degree of familiarity, need, environmental conditions, foreground-background contrast, the visual frame, context, etc.

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In literary narrative, a word or an expression, when used frequently and in synonymical manner, creates a pattern. But since such choices are of the author, it becomes a personal statement, a pattern. An author habitually uses these as an allusion. The motif or pattern, both allegorically indicate a thought, idea or concept. The symbolism behind the motif persists in the cultural setting but for a time. Beyond this the motif however remains simply a crafted stroke.

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In oral expressions, speech or music, the Vowels, Consonants, Octave or Sur (Indian) etc. as motif are placed together form a unique note or pattern. And the same conducted with different time interludes, become varied set of speech or music pattern. To this set of variations, the speaker adds phonetic variations, whereas the musician adds own mannerism of playing or singing. The music instrument and the space add peculiar reverberations. The motif and pattern of the sounds change with the ‘playing’ and broadcasting tools, both favouring certain frequency range and tonal (bass-treble) quality.

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‘A form constant is one of several geometric patterns which are recurrently observed during hallucinations and altered states of consciousness Klüver noticed that mescaline produced recurring geometric patterns in different users. He called these patterns ‘form constants’ and categorized four types: lattices (including honeycombs, checkerboards, and triangles), cobwebs, tunnels, and spirals’. (-Wikipedia).

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Motifs have a form, often with intelligible process of creation. But we try to interpret and reformat it through logic of mathematics. Man made motifs as repeatable strokes are simple but the ones ‘experienced’ in nature are often inexplicable. Natural motif forms do not exactly replicate. Some believe these can be ‘learnt’ through fractals (fractals are mathematical patterns that are scale invariant). The motif-forms at simple level are like spirals, circles, waves, meanders, crystals, snowflakes, bubbles etc. But complexity arises with sequenced repetition, axial rotation, mirroring or reflection. The motif, as single element may not offer much but as placed in various patterns it gains meaning.

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This is the 25th article (in continuation of old series -new beginning) on ISSUES of DESIGN

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EXTERNAL or INTERNAL ‘REVEALS’ of OPENINGS

Post 685 –by Gautam Shah

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6 French door in thin wall httpspixnio.como

Walls are chiefly load bearing entities. The thickness is the third dimension to the nominal planner structure. The third dimension has a functional depth, and architectural character. The Architectural expression of the wall-depth modulates the facade and gives a massing flavour. The functional depth frames the view, and regulates the illumination in the interior space.

2 Squared edge openings in Thick walls 32723717541_b24cbfb0ca_z

Openings in thicker walls have external or internal ‘reveals’ surrounding the frame. The bottom section forms the ledge of the sill. Openings placed on the outer face create deep an inner side or intrados (originally intrados meant, the inner curve of an arch or vault). Similarly openings placed on the inner edge form exterior side or extrados (originally extrados meant, the outer curve of an arch or vault).

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The deep interior sides, ifsquare-edged (at a right angle to plane of the window), made the perceived size of the opening smaller, then it actually is. This type of setting on interior sides, was not a major issue, where the room spaces were comparatively narrow, and so reflection from opposite walls was available. The narrow spaces were due to the technological restrictions and for functional requirements, such as in long halls and church buildings. In squared buildings the illumination was balanced from windows in the drum perimeter of the dome.

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The deep exterior sides, if square-edged (at a right angle to plane of the window), made the perceived size of the opening smaller, a desired arrangement to enhance the wall area and de-emphasize the presence of gaps of openings. It reduced the ingress of winds and snow-rainwater. To emphasize the presence of gaps, portals were added as the opening’s treatments.

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The square’ edged openings have high contrasting brightness. Such windows require counter illumination to reduce the glare. To distribute the light better in the interior space, inner sides (-intrados with the window fixed on the outer edge) and an outer side (-extrados with the window fixed on the inner edge) were splayed by chamferring. The angled side surface was further carved, fluted with ornate borders or architraves.

1 3 M thick walls and chamferred internal edges of Guard room at Burg Meersburg on Lake Constance in southern Germany Wikipedia Image by Tobyc75

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5 Norwich Cathedral 5987419099_94fe78d27d_z

Inner vertical sides, window heads and the sill, all were sloped to enlarge the reflective surface area. The chamferred sides on the outer face allowed more light by increasing the sky component, and allowed wider view of the outside.

20 Murals need evenly distributed illuminated wall Basilica di Sant Apollinare in Classe Wikipedia Image by Flying Russian

The effects of square and the chamferred sides of openings were well known to the mural artists (working with different mediums such as tempera, mosaic and frescoes painting), who accordingly composed the stories, shading in the scene, perspective angle, colour’s  hue and tone of artwork.

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14 Romanesque_church. panoramio Wikipedia Image by More pics than views…

In Romanesque and early Gothic architecture the windows were fixed on inner face, creating a plain and undisturbed interior surface. But by the time this was perfected, the Gothic walls were completely diminished, and windows were as wide as the gap between two columns.

Stained Glass in Windows

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13 Exterior flush windows deep set on interior side Santa_Maria_in_Cosmedin-templom_belso

Side walls of Gothic buildings became thinner due to the arrangement of flying buttresses and use of load-bearing columns. But the same advantage was not available in case of un-buttressed Front wall. The entrance doors of Gothic churches were flush-set on the inner face, and that allowed better view across and fuller distribution of light. But the doors set deep in the thick walls, needed chamferring with serrated sides.

21 Chartres Cathedral serrated door portal .flickr.comphotos69184488 N061189397807

In Baroque architecture the depth of opening was concealed with the projected facade elements like columns, pilasters, cornices, or pediments. In Italian Renaissance the facade had an applique lattice like a pattern that united several openings. In post medieval period, windows began to protrude out of the buildings, over into the narrow street. Bay and oriel windows, Mashrabiya openings in the middle East, and Zarokhas in India transgressed out, mainly to gain sideways view and air. The multi sided mass of the projection became a personal statement.

8 Deep set openings Hindola_Mahal,_Mandu,_India

In post medieval period, window projections created serious fire hazards and issues of encroachment of public lands. Both of these were corrected through improved fire laws and defined easement rights. Fire laws required windows to be within the wall (without any projections like ledges or hanging shutters). Later the Window tax curtailed the number of openings in a building.

22 Openings

Gothic architecture had already shown how to divide large openings with traceries of mullions and muntins. Large windows in thin walls require framing and masking, but small depth did not allow formation of integrated architectonic elements, or scooping out for niche creation. Architectural add-on elements such as half columns, extrados, porticoes, etc. were additives placed to frame and highlight the opening.

24 Gothic window surfave articulated by Mullions, muntins in tracery 5987964570_01c2171afd_z

The surface of the window was strongly stated by articulated divisions, contrasts between glazed and other surfaces like rusticated masonry. Windows were also placed in inward or sunken bays. The mid-wall between the windows was treated as very shallow niche or bordered frame for murals, paintings or placing a fireplace or library cabinet. Building’s facades of thin walls were also undulated by outward bay windows, ledges and other projections.

10 Protected Opening Tim 1965 1601_I_Street_NW_-_Washington_DC_-_window_detail

Thick walls accommodate the shutters of doors and windows within the gap. But shallow window gaps offer no shading. Some form of external shading system is required. Such shading systems have been used for creating architectural facade system, as in Chandigarh Secretariat building.

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Glass curtain walls are thin body construction, often without any projections for solar protection. This now sought through the glass technology, and the ventilation through separate HVAC system. Thin walls save floor space, and so are economic in spite of the compulsory recourse to other compensatory facilities. The nominal architectural play of depth and shadows for 3rd dimensional visual depth is not available with openings in very thin walls. This is now recreated by volumetric play of the building mass, or by variegated surface finishes. For such surface modulation, other means include visual reflectance and glows (illumination from within).

Modern Windows Exterior Building Architecture

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The vividness of stained glass windows or the colourful lanterns of Gothic eras are now recreated through see through LED glass. At another level the touch screen provides the same fare. The mix of the two will become part of architectural and interior face of buildings.

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DYNAMIC CURVATURES -Issues of Design 24

Post 684–by Gautam Shah

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13 Barcelone - Detail of a Gaudi building

A curvature is the synergetic dynamism of a line and the external forces, unlike a straight line which is the path of a force. Antonio Gaudi stated that ‘The straight line belongs to the man, the curve to God.’ All curvatures on earth manifest under two basic forces, the gravity of the earth and the current stresses resetting the earlier status. The curvature reflects the forces, form and ensuing functions. But Dynamic curvature is a live story, telling us How a form changes under stress. Dynamic curvatures are found in spiral coils, serpents, water ripples, plasticity of wet clays, free movements of flying birds, bending of bamboos, sand-dunes, clouds, etc.

14 Gaudi-Casa-Batllo

A line occurs across two things. As per Euclid’s definition ‘The extremities of a line are points’. A ‘line’ in literary sense, had no distinction, It needed an appendage ‘straight or curved’. In this sense a curve is a generalization (stressed or stress-free?) of a line. Historically, the term ‘line’ (perhaps from linen, lino or flex) was used for, rope, hawser, series, row, rule, direction, rope, flaxen cords, thread, cable etc. -many indicating curved forms of line. The difference between a line and curve is of scale.

Curvature, in mathematics, is the rate of change of direction of a curve with respect to distance along the curve. At every point on a circle, the curvature is the reciprocal of the radius. For other curves (and straight lines can be regarded as circles of infinite radius), the curvature is the reciprocal of the radius of the circle that most closely conforms to the curve at the given point’.

11 Golden Gate Bridge. Most suspension bridge cables follow a parabolic, not a catenary curve, due to the weight of the roadway being much greater than that of the cable. Wikipedia Image

Over a longer distance, all lines are parallel or meeting in infinity. The earthly spatial geometry has latitudes as the parallel lines but longitudes converge at poles. Latitude and longitude both at smaller scale are ‘straight’ otherwise curved. Such spatial geometry lines are implied, but their curvatures are real and experience-able. A line, Earth’s horizon is seemingly straight, but in reality a curvature. A plane travels between two points, in shortest and a straight path, but following the curvature of the earth’s surface, an implied line.

12 at Broadway and Cortlandt Streets in New York in 1883, shows a nation exploding with its first communications.

10 Puentedelabarra

A line is a connection, where the intrinsic transfer of energy makes it straight, but extrinsic or abutting energy deforms it to a curved line. All types of energy transfers are revealed in the direction. Lines and curves with substance get stressed due to their own weight, and yield to the gravity. Materials yield or resist tolerable deformation. Such visual flections also occur over short distances. Our eye visually bends a straight line, and so facade of the Parthenon required several calibrations. In reality the tops of the towers of a suspension bridge or transmission pylons are further apart than at the bottom, due to a curved surface of the earth.

15 Shadow of a straight line on curved surface Wikipedia Image by Sten Porse

There are many different forms of line. The transition from one to another medium reveals as an angular bent. Water-submerged section of a stick is a visual aberration of a line. Crystals are molecular level entities with the linear-angular structure. If the same are formed over a curved surface such as a liquid droplet, the crystals take the shape of the surface. Gravity has a tendency to distort the way crystals form. Outer space with nearly zero gravity allows creation of complex, three-dimensional proteins. Here the gravity and convective forces do not interfere in crystal formation. It is always advised to aim ‘higher’ to let the ‘bent’ trajectory reach the spot. So nature has both, the lines and curves, the former as intrinsic, and later as the extrinsic effects of forces.

5 SpiderCatenary

6 Manhattan Bridge in New York City with deck under construction from the towers outward

Curvatures, like the lines, also have a direction, as measured for the angle of the straight line formed by connecting any two points on the curvature. Such a presumed line could have horizontal, vertical or inclined angle, with reference to the earth. Curves that have a known or mechanical method of origin are Geometric, but if irregular or complex and cannot be defined using any equations, are Phantomastic.

7 Natural or real contours of Materials Arizona mountains

8 Angular or linear formation of Red rocks https pxhere.comenphoto552984

Curved lines come back to their point of origin to form a closed or determinate form (circle, ellipse). Closed curves have no beginning or end, but could be spiral, where the ends merge but in some other time or space. But, it could go to infinity to form an open or indeterminate entity, losing the essence of the curvature to a parabola, and eventually become a straight line.

17 Different types of coils

18 Dawn Eases Into Orbit Around The Dwarf Planet Ceres

Circles have easier sense of movement, but spirals give a sense of completeness, but without any restrain. Spirals are natural shapes in shells, snails, water-whirls, cyclone or tornado. Spirals are boundless and open, going to outward or inward eternity. Spirals arrive back, but bring in positional and temporal change. Spirals represent the notion of growth, evolution and often confusion. Spirals move in clockwise of anticlockwise directions, that perhaps the persistence of initiating and sustaining energy. A spiral as a curve represents time, metaphorically better then lines do. A spiral curve is not a closing circle, but turns around to arrive back at a different elevation (or position). Essences of spiral are the pull and push, and both are linear. Structurally a spiral is linear entity for compression-tension. So spiral, a curve, is a line.

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20 Geological_time_spiral

Curves with a single stroke can have one bridging line passing over any two pints on it, but multi-strokes curves can have as many bridging lines. Single stroke curve, create forms open on a single side, with an area asset on one side of it. Multi-stroke curves, on the other hand, create alternating open side form area assets that alternate on either side of it.21 Optical,_Corrections_in_Architecture_95

Silhouette, outline, skyline, horizon, shadows or contour lines, are all edge lines of real or ephemeral entities. The silhouettes are accumulative projection of several objects. The outlines define extremity of an object, if strong, subdue the object by framing and limiting its extent. Skylines are the human formations, a unique horizon-impression of the urban scape. A horizon is an ephemeral line between the sky and terrain. Shadows follow the object but occluding the details of the object-body. Contour lines are curvilinear, unless of man-made mass like roads and trenches. Borders demarcate the domain differences in terms of social, political, beliefs, but usually reinforced by the terrain. Borders are linear dividers or closed ended protectorates (if, squared framed or full curved forms).

The Lines start and terminate to a point, whereas the Curvatures have uncertainty about their ends. Lines as edges of angular planes show cleaved faces (diamonds, crystals), but curves of a streamlined product have ‘continuity’.

A streamlined shape lowers the friction drag in the medium it moves, air or water. Drag is a force that slows down movement. Many animals, birds, and machines, such as aeroplanes, trains and submarines, have streamlined bodies to reduce friction drag’.

1 Open_area_at_the_Johnson_Wax_Building,_headquarters_of_the_S.C._Johnson_and_Son_Co.,_Racine,_Wisconsin

9 Oak Park Il Hills House

During the Great Depression of the 1930s America had new style of Art-Deco architecture (late), product and graphic design. The Streamline Moderne or Art Moderne, favoured the curvilinear edges, accompanied by horizontal lines (parallel to gravity rather then up against it). Industrial designers stripped the Art-Deco design ornaments to implement the aerodynamic design. Long ribbon windows and cylindrical forms were new vocabulary of the ultramodern. All consumer products such as clocks, radios, telephones, cars, furniture, and other white good appliances were redefined to fit in the new concept. But these were sought to be replaced with modern materials of the age, steel, concrete and glass, and these had angular traditions.

2 Toaster

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4 Dutchess of Hamilton, re-streamlined https www.flickr.comphotosbiscit19723558479803

This is the 24th article (in continuation of old series -new beginning) on ISSUES of DESIGN

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SPACES and PURPOSES

Post 683–by Gautam Shah

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Design for a Stage Set_ A Dungeon with High Vaults and a Staircase at Right.

A space is either real or abstract. The Real one is contoured in geometry and so well founded. The Abstract one is coalescence of many perceptions, or a fuzzy imagination, and so transient. Spaces have a natural affinity for location and environment. The location related factors are static like the spatial character, size, shape, ergonomic accommodations, and connections with the outside world. These are substantiated by structures, amenities, facilities, utilities, tools and enrichments. The environment endows many variations. As the environment is substantially directional, the orientation becomes a key determinant of the space lay. Other important factors are the energies affecting all things on earth. Gravity endows the stability.

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Spaces derive their purpose with the users’ concerns, like: sense of belonging, ownership, access, privacy, security and safety. A space for an individual, becomes functional, by the distance from edges, interpolation (of other spaces), connections and presence or absence of others (beings). A space, is relevant to an individual and groups, by the preferment of the core or verge. The core is intensely purposive to the ‘idea of space’, whereas the verge has many non-spatial connections and so motives are tempered.

36520624965_cfbfd6514b_zTo concern a space, one needs to possess it, by way of perceiving or occupying it. For both of these, one needs to possess it through a position in it. The possession of space is an indication that it is amenable to changes like size, shape nature. The position in a space makes it possible to explore a space consistently and differently. It reveals new potentials of the space. Possession and position are followed by the ‘next move’, the conditioning of the environment.

office-1094826_640Spaces are set of perceptions or experiences. Some are of real conditions, but many others are supplemented by the mind. Perceptions occur from positions in space and sequences of change between positions. Real positioning is framing in time and space, and the abstract one may have cause and effect (cause is partly responsible for the effect, and the effect is totally dependent on the cause). Space positions are taken for greater reach and cognition in space. Positioning is a biological as well as circumstantial conditioning. Spaces are places that reflect the necessity for gaining and maintaining a commandeering position. Positioning in space ultimately gets reflected in the cultural inclinations or biases. People prefer left or right preferences for turning, reading, sleeping or social interacting.

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Spaces are occupied for two main purposes, for various actions, and to keep materials and means to conduct the same. Actions are closely connected to spatial features, such as the environmental facilitations, architectonic elements amenities and facilities, and to other people. Activities relate to our being a biological entity like the metabolism, safety, security, privacy, comfort, rest, communication, expression etc. Actions are either routine or unconventional but productive or satiating. Routine activities occur with predictable spatial features, but compulsions of space size and group behaviour dynamics force unconventional settings for the actions.

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Routine purposes of spaces are day to day affairs. These are fixed to spatial segments, time schedules, environmental conditions, and utilize the same amenities, facilities, utilities. Spaces used for routine purposes reveal little that is exciting or new, because there is no need or time for exploration. Such spaces are predictable but very productive. The location related attachments are maintained, because these offer some flexibility for the spread of activities. Such segments due to their consistency and permanency are marked or named architectural units (bathing area, hay chopping area, etc.).

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Unconventional purposes of space emerge due to the compulsory and explorative shifting of activities. Such shifts occur only occasionally, because space-efficiency occurs when wait for the right occasion or search for the right location is minimal. Unusual purposes of space are realized first within the same space segment and when scheduled in the same time section or sequentially. In single room dwellings, tents and non-formal work areas the schedules and space requirements are well matched. But when one or both come under stress, unconventional means are sought or results delivered. Inconvenience of non-functional spatial or environmental features may be ignored, if group behaviour dynamics demand it.

geograph-4053627-by-Ben-BrooksbankActions occur at places from where some degree of command can be continued over a larger domain. These places are geometrically centric and environmentally favourable. Places of actions have strong cultural association, like public versus private, allowable versus sanctimonious spaces, or orientation taboos of directions.

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Casual repositioning and deferments of activities are required to relieve the tedium, and for experimentation. Activities due to their scale, required amenities, unfavourable weather or group dynamics require different space spread. Such activities need spatial shifting or time switching, or both.

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Customs and taboos result from the local perceptions and experiences, and so same activity could have different time and space setting (ethnic variations) across societies. This is apparent in satiating work like craft, than productive jobs.

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Spaces derive their purpose with the postural flexibility (capacity to gain and leave). The number of sub-processes, which can be handled without shifting, depend on the physical reach. The dependence on tools, equipments, structures, amenities, facilities though enhance the spatial purposiveness, do restrict the variations a space can offer. The expectations for the next lot of work, preempt the purposes a space offers

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To an outsider, the purposes spaces serve seems intermingled or chaotic, but real users know the order of sequencing. The processes occur in lots or streamlined movement. Spaces with streamlined purposes reflect the high efficiency through optimized postural changes, minimal location shifting, coordinated use of amenities.

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WALL STRUCTURES

Post 682 –by Gautam Shah

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Wall structures have been prime structure for community purposes like, flood protection, irrigation, defense, terrain contouring and against erosion of land. These, perhaps preceded the walls erected for construction of dwellings. The builders from ancient times, were innately aware of the difference between a wall carrying side thrusts and bearing vertical loads. And accordingly the forms and techniques of constructions were different. The walls carrying side thrusts followed the natural angle of repose (the steepest angles at which a sloping surface is formed of loose material remains stable). The walls carrying vertical loads were designed with concern for lateral stability, and to a lesser extent worry about load bearing capacity.

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The idea of a column, as a ‘zero-sized’ wall, (like the Stonehenge) and of pillars (obelisks) may have come from tree trunks. Wood scaffolds were used for painting tall cave walls and ceilings. A series of props or poles, were used as piles or spikes for quicker formation of linear structures, such as in under-water constructions, floods, wet soils, or support against sand like loose soils.

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Earthen Wall structures for embankments or dams, for water flow regulation, storage, prevention of land erosion, against flooding, access-way (road) construction, for irrigation or navigation channels were constructed by combination of deposition or cutting-dressing. But the skill rested in exploiting the existing contours of the lands. Such structures were large and affected the entire community. For participation of large number of people, clear perception of the project and its benefit was necessary. It is apparent that such projects were executed during certain season. These were continuing efforts as added upon and improvised by several generations. Such lasting efforts can occur in societies that are politically and socially stable.

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Other walls were erected in the form of city-town walls to protect the community, and monumental structures related to burial facilities. These walls due to their extent gave impression of monumentality, and were gravity-stable and invincible forms against the invaders or marauders. Walls defining passageways are for land mass retention and ceremonial demarcation of walkways. Town walls and monumental walls, both were not ‘load-bearing’ structures. Both also related to access by large number of people, often in processions. The inevitable entry point was well marked in scale and position-location.

16 Passage tomb of La Hougue Bie by © Copyright Bob Embleton and licensed for reuse under this Creative Commons Licence.

Protective walls were often constructed as tall fences. These were made insurmountable by various means like an enhancement of height-width factors. Width was increased by forming a ditch on the face of the wall, and height was added by constructing the wall over a natural steep edge of terrain. City walls in some areas were constructed of tree trunks or wood lattices.

5 Pallisade like fence as a wall against calalry United States History Civil War, 1861-1865

Palisade in Celtic village Wikipedia image by Zureks

A palisade, was a defensive fence (also called a stake-wall or paling) formed around the military camps by Greeks and Romans. It is formed of wood stakes or tree trunks placed in a line. A groyne is a similar, but low height wall structure, a hydraulic entity for interrupting the free flow of water and restricts the movement of soil-sediments from coastal area.

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A levee, dike, dyke, ditch, embankment, flood-bank or stop-bank, are naturally occurring long ridges or artificially constructed walls to regulate water. These are usually of stone and earth, and follow the course of a river. Levees and other structure require constant care by organized society. Some of the earliest levees were constructed by the Indus Valley Civilization (2600 BC), Egyptians to manage the floods of river Nile, in Mesopotamia and China. The word Levee or F. Lever, literally means ‘to raise’.

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The Greek geographer Pytheas noted in 325 BC, that ‘more people died in the struggle against water than in the struggle against men’.

The word Dyke (dijk) indicates, both trench and bank for water management. The word Ditch derives from dic, dick or dig, meaning to digging a trench and raise the banks with the excavated soil. Such earthworks acted as horizontal walling to deepen water channels, enhance the flow-rate and water carrying capacity. The water channel shaping by the side walling structures provided reliable lanes for waterways. These wall structures were formed to reduce the erosion by water flows, waves and winds.

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The first dikes and water control structures were built and maintained by those directly benefiting from them, mostly farmers. As the structures got more extensive and complex councils were formed from people with a common interest in the control of water levels on their land and so the first water boards began to emerge. These often controlled only a small area, a single polder or dike. Later they merged or an overall organization was formed when different water boards had conflicting interests. The original water boards differed much from each other in the organization, power, and area that they managed. The differences were often regional and were dictated by differing circumstances, whether they had to defend a sea dike against a storm surge or keep the water level in a polder within bounds. In the middle of the 20th century there were about 2,700 water control boards. After many mergers, there are currently 27 water boards left. Water boards hold separate elections, levy taxes, and function independently from other government bodies. -Flood control in the Netherlands Wikipedia

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City walls are elaborate ‘fencing structures built from stronger materials to fortify a territory. The fort walls were symbols of power, so the scale was grandiose. These walls were planned at most select location, adding upon whatever natural defence features were available. Appropriateness of the site also rested on logistics of supply, of which food-fodder and drinking water, even during seizure condition, was very important. Forts housed a populated community and to sustain it, also included structures for defense preparedness and for offense capacity like ditches, gates, embankments, watchtowers, crenelation, etc.

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A moat is a ditch or long pit around a settlement with or without a fence or fortification. Moats were created by reforming the existing terrain features, or dug as a new one. Fortified structures, like castles were once sited over difficult terrains, where some natural features such as hills, elevated lands or rocky landscapes were available for some protection. Moats were additional defence provisions, formed at vulnerable spots. The difficult terrains, however, make it difficult to reform existing terrain, or excavate a new trench. Digging a moat was not only labourious, but the management of the excavated material equally difficult. The excavated stuff was used to back support the fort walls, or raise the level of internal grounds. Moats were formed along with construction of fort walls.

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Some of the earliest defensive walls were linear formations and not any surrounding or enveloping forts. These were long barrier walls with open ends or terminating into hillock or large water body. These linear walls marked a territorial edge or boundary of the kingdom. Such edge walls had to be very extensive to be effective.

Sumerian King Shulgi of Ur, 2038 BC., built a wall that was 250 Kms long, between the Tigris and Euphrates rivers, to keep the invading Amorites out of Sumerian lands. Great Wall of Gorgan (restored and renovated by the Sasanian Persians in the 5th or 6th C) was 195 Kms long, and included more than thirty forts along its length. Great Wall of China was built as several small independent units, possibly first at vulnerable points, which were ultimately joined together during the Ming Era. It was as a freestanding regional scale defensive structure. Similarly the Anastasian wall (the Long Walls of Thrace) of the Byzantine Empire (469 C) located in modern Turkey was also not anchored at either end to any terminus. All such walls proved to be ineffectual as enemy army marched around the ends. The most known wall structure, Hadrian’s wall of Britain was built by Roman Emperor Hadrian (122 AD) to prevent frequent incursions.

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