FLOORINGS

Post 586 by Gautam Shah

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Floorings, by virtue of their sheer extent are the most effective components of interior space definition. Floorings are important for visual and tactual appeal. Floorings are visually perceptible because the common sources of natural and other illuminations are from the top. Tactile appeal emerges when visual details of the floorings are not registered. And there are several circumstances when visual recognition fails to occur such as very vast extent, deficient illumination, uniformity of colour, pattern and texture, a higher floor from the eye-level and physiological deficiency of visual perception.

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Velodrome for cycling > Doubly curved flooring surface  > Wikipedia image by Nicola

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Cycle skating ramps > Wikipedia image Joshua Sherurcij at en.wikipedia

Floorings take on a very prominent role in: sparsely furnished and lightly occupied rooms, corridors and yards. Floorings are strikingly evident when observed from a higher elevation, such as upper level galleries, landings and platforms. Flooring pattern and colour become less evident on a very glossy surface. Reflections over a glossy surface of the flooring contribute to the height aspect of the space, but due to shortening of the depth aspect, add to the ambiguity. Floorings gain importance in tall spaces, rooms with invisible or non interesting ceilings (due to height, darkness and lack of captivating features), and in rooms with floors or levels rising upward (allowing larger floor area to be visible). Floorings provide some functional surfaces that are horizontal (parallel to gravity), in a straight gradient (ramps), variable gradients (roller skating), moulded to single curvature (ice skating) or double curvatures (Velodrome). Floorings in similar situations, however, could be ‘non-functional’ that is ‘decorative’. Such exceptional conditions occur in prosceniums, road verges, canal sides, faces of inclined walls or piers. Floorings are required to absorb or reflect energies like light, heat, sounds, vibrations etc.

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Pavement of Praca de Pedro IV in Lisbon > Wikipedia image by Roede

Visual floors have colour, pattern and texture through body surface, joints, inclination and stepping. Floorings that provide a pleasant and novel visual experience affects us more. Visual characteristics are used for connecting various architectural entities (buildings abutting a street or plaza), uniting diverse architectonic elements (like columns, gaps, openings), to impose a matrix of scale or discipline, (create passages, marked paths, territorial definitions). Flooring patterns are used to form segregated lots for different levels of accesses or purposes. Floorings with graphic patterns, motifs and symbols become part of road signage systems.

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Brick pavement in Piazza del Campo Siena > Wikipedia image by Zyance

Flooring is a very tactile component, unlike a wall finish or a ceiling. Tactile floors offer feeling of warmth, cold, hardness or softness. The presence or absence of texture makes for shiny or dull floors leading to safe, easier or difficult movement. Tactile flooring is used for movement of people and goods, sleeping, resting, bathing, washing, storing, food preparation, and handling and processing of materials.

Floorings are broadly classified for the degree of hardness, resiliency, resistance to scratching, staining and water or moisture absorption, capacity to conduct electrical charge, spark erosion etc.

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Stone ballast-packing against railway track > Wikipedia image by LooiNL

Simplest floorings are the natural finish over the surface of the material. These may need, levelling, dressing, wetting, curing, cementing perhaps compacting such as in clay-soil courts, sports tracks, playgrounds, cricket pitches etc. Natural Materials include, clays, soils, sands, stones, gravels, Kankar, minerals, burnt ceramics (Surkhi), Pozzolana, animal excretes and plant decompositions. Cementing compounds are water, oils, bitumen, tars, pitches, synthetic polymer binders, lime and Portland cement.

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Clay court for tennis > Wikipedia image by sk4t

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Cobble stone floor Place de la Bastille Paris > Wikipedia image by Tangopaso

Gravity laid floorings are simply laid, relying on the pull of gravity for stability. The largest and flat surface is placed touching the plane of gravity. In blocked or unitized floorings the stiffness, thickness and close fitments add to the stability. Examples of gravity laid floorings are: cobbles, brick lays, gravels, sand spreads, carpets, rugs, floor spreads, Daris, Chattais, woven mats, feet dusters, wooden boards, synthetic flooring mats, plastic and rubber tiles and rolls.

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Gravity laid carpeting in Lloyds Building > Wikipedia image by Lloyd’s of London

Cast in-situ floorings provide very extensive and a uniform surface. Cast in situ floorings are created by liquidized mass such as plasters, pastes, coatings and homogenization. The conversion processes are evaporative drying, oxidization, calcification, chemical bonding, polymerization, heat, radiation and moisture induced changes. Cast in-situ floorings are like concrete, cement cast floors (IPS), cow dung, Surkhi and lime combinations, synthetic or culture marble systems, fiber glass and other resin-fiber matrix spray-able composites, organo plastics, epoxy coats, PU coats, rubber coats, tar-bitumen roads.

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Operation theatre Flooring coating > Wikipedia image by Pfree2014

Mechanically fixed floorings are keyed to the substrate or the structure. Usually when floor finishes are incapable of staying in place due to the thin mass, lighter weight, reduced gravity (on sloped surfaces), presence of other pulling forces, small extent or spread requires some mechanical or adhesive fixing. Mechanical fastening is achieved by nut-bolt, nails, screws, rivets, cleats and seam formation. It is also done with friction, suction, surface tension, magnetic pull, electro static attraction etc. Examples of tied floors are bus and boat decks, stage wood floors, claddings, panellings, stair carpets.

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Dull and glossy floors > Pixabay image by Pashminu

Adhered floorings, at a simple level are affixed to the substrate. At complex level a layered composite system is formed by multi-layering over a substrate. Adhered finishes are superior as the entire surface is affixed, and so allows greater distribution of uprooting stresses. Pozzolana, lime, cement, are traditional binders whereas modern age adhesives are polymer and elastomeric compounds. Coatings like paints, organosols and other liquidized compounds are used. Adhered floorings can be categorized into three types: 1 Coatings create an extensive surface, 2 Films and sheets offer large tracks of surface, and 3 Blocks and units form a larger unit. The adherent besides fixing may provide padding, resiliency, insulation, electrical discharge, green or tacky bonding for easy removal. Typical adhesive bonded floorings are, Woven and non woven carpets, fabrics, mats, ceramic, mosaic metal, and synthetic tiles, metal or polymer sheets and foils, paints and coating systems.

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Spray-on composite flooring > Wikipedia image by Maurits90

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REFLECTION OF BEHAVIOUR

Post 585 by Gautam Shah (9 of 16 Behaviour in Spaces)

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The space and environment provide the basic setting for the behaviour. And yet an individual’s behaviour projects different meanings to others. Behaviour of a person reflects the level of adjustments, adoption, comfort, need for change, nature of interpersonal relationships and degree of conditioning by the culture and geopolitical surroundings. This is a complex process where it is not possible to indicate the cause and effect. The behaviour is intended to perpetuate a space, or make it valid for a longer time. An individual personalizes the owned space to economize effort expended in frequent adjustments. For casual occupation, however, other adjustments are required.

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Encounter > Wikipedia image by Alex Proimos from Sydney Australia

 ● Shift in Space: One of the most perceived forms of behaviour is the shift in space. The shift in space is the change one causes in own-self, position or the surroundings. The shift in space is made to recast the relationship with the surroundings including other beings.

● Change of orientation: Primary shift occurs through change of orientation vis a vis an object, human being, object or a natural force (energy). The shift in orientation occurs by realigning the nodes of perception, such as turning nose towards or away from smell, view or ignore a sight, etc. It also occurs by being aware of a thing.

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Arnold Lakhovsky Conversation 1935 > Wikipedia image

● Orientation of the body: Orientation of the body limb like head and of the sensorial nodes like eyes, ears, nose, etc. are both different and synchronous phenomena. One, may talk to other, but avoid an eye contact or square face to face confrontation.

Chiefs of nations seat side by side at approximately 150° angle which allows them to ignore as well as interact selectively. In a stage performance, actors often speak towards the audience for preaching dialogues, and to each other for sentimental deliveries. Boss wants a secretary, stenographer or colleague to sit on the side rather then on front sides.

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Arrival Hong Kong Airport Wikipedia image by Manlewingoals

● Change of place: One changes the position and orientation frequently to calibrate the relationship with people and objects. Shifts are subtle (gestural or postural) to more elaborate like a change of place (positional). From the moment and point of arrival to a space one starts a search for destination, a place to confront objects and other beings in the space and perhaps strategy for escape. The process reflects the attitude of a person through gait, speed, clarity of the purpose, bodily changes, etc. One can perceive and schematize the approach by promotive as well as hindering means.

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Postures and Grades of distances in a meeting

● Anchoring to a place: In a space one needs to position to a place. So on entering a new space or when behaviour must be recast one first shifts the orientation, moves and searches for a place mainly to position and delays or accelerates the process by suitable interim engagements. Re-positioning helps to vitalize the relationships with objects and other beings. A strategy of behaviour is planned for objects and other beings that are already present or their presence is envisaged. One relies on spatial elements like a barrier, an edge, a differential in environment, a pattern, objects, amenities, facilities, nodes of services, other single human being or in groups to position. Other markings are metaphysical elements and metaphorical presences. A designer recognizes such entities, or implants or avoids them to make a space inhabitable or even hostile.

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Anchoring in space for Behaviour > Pixabay image by eak_kkk

● Sequencing in space: Behaviour in space is one momentum where one continues to shift in a planned or unplanned manner. Shifts are sequences of actions timed to match other happenings or to last for a duration-cycle. The unplanned sequences are exploratory or reflect compulsions to remain present in spite of intense discomfort.

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Hong Kong Ferry Piers > Wikipedia image by Raonspediwu

● Posturing: Postures reflect the human behaviour, and are means of controlling incursions by others, as much as it allows one to project participating or reserved personality.

Open body posture is one in which vulnerable parts of the body are exposed. Position of hands, fingers, feet and head, show an open versus closed body posture. Open posture is perceived as a friendly and positive attitude. People with open body posture are able to carry out multiple movements such as body movement while shifting the gaze.

A podium or a front desk is a very assuring platform for a speaker, but shields the expression through body language. A leader, on a higher platform, controls the assault from the audience, and thereby dominates. By standing against a wall one assures that intrusion from that side is blocked, but by occupying a corner one limits the escape routes. Sitting in an aisle seat (In comparison to a window seat) allows one the postural freedom, but makes one prone to disturbances. Front benchers have to be attentive. Occupying a geometrical centre or a spatial focus automatically enhances the interference.

A chair with arms rests, railings, bus or railway hang-straps encourage open posture. A moving object like a bus will not allow closed body posture. A deep seat that allows stretching of legs and excludes the crossing of legs, supports the open posture. A stool seat (without back) allows one to lean forward as an open posture.

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Edouard Bernard Debat-Ponsan Flirting

Closed body postures obscure the vulnerable parts of the body. The body parts like throat, chest, abdomen and genitals are covered with crossing of arms and legs or clasped palms. Similarly showing back of the hand, clenching hands into fists or withdrawing legs inwards represent closed postures. Hands clasped behind the back may also signal closed posture even though the front is exposed, because it can give the impression of hiding something or resistance to closer contact. Closed body postures give the impression of detachment, disinterest, unpleasant feelings and hostility. Clothing may also signal closed posture such as a buttoned suit, or a handbag or briefcase held in front of the person.

Sitting on the side of a fairly wide chair, leaning too much on one of the armrest, sitting upright (without touching the back) in an easy chair, sleeping very straight in a bed, keeping hands in pockets of the garment, are some of the signs of closed body postures.

A person with a higher (social) position nominally takes a more relaxed posture, like seating down to talk, and that seems less challenging; whereas, a person with a lower (social) position, often maintains balanced or formal posture by placing both hands on the lap or at the sides, standing with balanced body or prefer to remain standing (until asked to sit).

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Posturing for eye level contact > Wikipedia image

● Eye level and its focus are some of the most important means of behaviour exposition. Eye level and focus related physiological deficiencies can be corrected through appropriate postures. Postures can adjust the distance and help de-focus the ‘gaze’, by taking a side seat or stand or by seating behind a desk. Often the opponents are disadvantaged by offering an uncomfortable seat, a seat lower in height and placing them in a non-axial position. Opponents are discomforted by providing them a fixed position with little or no chance for sub-posturing, like very narrow space, unbalancing, scary or distracting position. One, as an opponent can correct such conditions: by sitting or standing upright, by aligning body and sensorial faculties in the same direction, by heavily gesticulating, and raising the voice.

● Inclination of the body: During conversation, a person unconsciously inclines or moves body or head, either close to or away from the opposite person. The action depends on the sex and age of the opposite person and the nature of the topic. An inclination towards the opposite person can be an expression of sympathy and acceptance, whereas moving or inclining away can show dislike, disapproval, or a desire to end the conversation.

An intense conversation with heavy gesticulation or posture changes can be subdued by adding to the distance between the parties. Deep seating or reclining elements and mirrors not only reduce gesticulation, postural changes but also intensity of the conversation. In waiting rooms seats are distanced and do not face the receptionist. A TV monitor that shows the class or office space disciplines the users.

● Synchronous or empathetic behaviour: During intense conversations participants have a tendency to imitate each others behaviour. They emulate postures and gestures. Such synchronous behaviour encourages deeper relationship, provided necessary support means are available, such as: correct distance, equalized ergonomic facilities, and nonspecific environmental conditions.

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This post forms 9th of the Sixteen part of Lecture series on Behaviour in Space that I will be offering for the spring semester starting Jan 2016 (to mid April2016) at School of Interior Design, Faculty of Design, CEPT University, Ahmedabad, India.

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BLOG LINKS on FURNITURE DESIGN

Post 584 by Gautam Shah

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These are few BLOG LINKS on FURNITURE DESIGN

● Measures and Modulation

● Postures

● Space Planning

● Designing Furniture Elements

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MEASURES and MODULATION

UNDERSTANDING the ISO MODULAR MEASURES for DESIGN Blog Post 519 Dt 21Sept 2015

MODULAR MEASURES Blog Post 427 Dt 19 May 2015

MODULATED MEASURE SYSTEM Blog Post 219 Dt 20 Oct 2014

IMPLICATIONS OF DIMENSIONAL COORDINATION # 1 Blog Post 421 Dt 12 May 2015

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A reading of Moliere in a Salon by Jean Francois de Troy 1728 Wikipedia image

POSTURES and DESIGN

POSTURES and MEANINGS for design Blog Post 526 Dt 3 Oct 2015

POSTURES and BEHAVIOUR Blog Post 347 Dt 25 Feb 2015

POSTURES for Furniture Design -1 Blog Post 250 Dt 20 Nov 2014

POSTURES for Furniture Design – 2 Blog Post 259 Dt 29 Nov 2014

POSTURES for Furniture Design – 3 Blog Post 537 Dt 28 Oct 2015

BODY POSTURES Blog Post 193 Dt 23 Sept 2014

BODY POSTURE SYSTEMS Dt 26 June 2014

BODY POSTURING and DESIGNING for it Blog Post 510 Dt

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Judo formalism > Wikipedia image by http://www.usmc.mil + Cpl.Jeff Sisto

SPACE PLANNING for INTERIOR DESIGN

SPACE PLANNING for TASKS Blog Post 212 Dt 13 Oct 2014

SPACE PLANNING Blog Post 269 Dt 9 Dec 2014

SPACE PLANNING by Visual and Non-visual means Dt 23 March2014

SPACE PLANNING -Developments Dt 18 March 2014

COMFORT CONDITIONS in INTERIOR SPACES Blog Post 443 Dt 8 June 2015

SEATING ARRANGEMENTS and INTERACTIONS Dt 24 April 2014

SOUND and SMALL SPACES Post 128 Dt 27 Aug 2015

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Robert Irwin: Scrim Veil -Black rectangle – natural light Whitney museum of American art New York 1977 > Wikipedia image by Mduvekot

 DESIGNING FURNITURE ELEMENTS

WAINSCOTING -wood panelling Blog Post 461 Dt 1 July 2015

ALMIRAH – 1 Blog Post 514 Dt 11 Sept 2015

PANELLING SYSTEMS Dt 15 May 2014

DESIGN of STORAGE SYSTEMS Blog Post 466 Dt 6 July 2015

DESIGNING STORAGE SYSTEMS Blog Post 419 Dt 10 May 2015

STORAGE SYSTEMS Dt 2 Dec 2009

STORING Blog Post 207 Dt 7 Oct 2014

STORING – II Blog Post 209 Dt 10 Oct 2014

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Greek Furniture > Wikipedia image by Giovanni Dall’Orto

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BAKELITE PLASTICS -the beginnings

Post 583 by Gautam Shah

Clay was the first plastic material that could be formed to desired shape. Clay gains ‘plasticity-a moulding or shaping capacity, due to its grain shape, size and distribution and addition of water. A natural metal nodule or a purified one from the ore, on heating becomes, ‘plastic’. This property was not available with materials like wood and stone. Materials like Bamboo or Cain, have the capacity to bend, but cannot be reshaped or moulded. Plasticity is the property of material to be deformed repeatedly without rupture by the action of a force, and remain deformed after the force is removed.

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Potters clay > Wikipedia image by Yann

Historically few natural materials that exhibited the plastic behaviour were known, but without clear perception of the categorical behaviour. These natural materials were organic polymers or bio-derived materials such as egg and blood proteins. In 1600BC. Mesoamericans used natural rubber for balls, bands, and figurines. Treated Cattle’s horns were used for their translucency in lanterns and windows. Materials with similar properties were developed by treating casein -a milk-protein with lye. Casein was also used as gum material. Bitumen was used as a water proofing material for boats and also as a joint material for masonry. Plant-based starch materials on being cooked showed flow-behaviour. Lac, an insect exudate was used as gum or joining material in India. The lac was used for cast mouldings since 1868. Rubber, a plant exudate was used since 1535, as water proofing material and for shoe making.

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Cattle horn spectacles > Wikipedia image by Daderot

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Bakelite body Radio at Bakelite Museum > Wikipedia image by Robneild at en,wikipedia

Polymers were not distinctly identified till around 1900s, however during 1860s Thomas Graham noted that some dissolved organic compounds -typically cellulose, cannot be purified into a crystalline form. This was different organization of matter. Graham called them ‘colloids’, after the Greek word for glue =kolla. This was the beginning of the Age of Plastics or Polymer Age. (Plastic =plastikos Gk = mouldable) (Poly+mer=many molecules).

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Parkesine (London) developed the first plastic from plant origin cellulose by reacting it with nitric acid, to form a cellulose nitrate. Celluloid was plasticized with camphor, dissolved in alcohol and hardened into a transparent elastic material. On heating it could be moulded and coloured with pigments. It was a substitute material, for than (1860) widely used ivory balls for billiards. The product was patented under the trademark Celluloid. It was also used later in the manufacture of objects ranging from dental plates to men’s collars. Celluloid, despite its flameability and capacity deteriorate when exposed to light, was commercially successful.

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Ericsson Bakelite phone > wikipedia image by Holger.Ellgaard + sjalv laddat upp

The first totally synthetic plastic was the phenol-formaldehyde resin, Bakelite. In the early 1900s, Bakelite, the first fully synthetic thermoset, was reported by Baekeland. Baekeland’s was looking for a replacement for shellac that had difficult supply. And that is the reason, their first product a soluble phenol-formaldehyde like shellac was called ‘Novolak. Baekeland also worked on a process to strengthen wood by saturating it with a synthetic resin of phenol and formaldehyde.

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Bakelite chips colour chart 1924 > Wikipedia image

Baekeland reacted Phenol with Formaldehyde (an exothermic reaction) but stop the reaction midway, while the product was in liquid state (called A stage). ‘ The A resin (Resol) could be made directly into a usable plastic, or it could be brought to a solid B stage (Resitol) in which, though almost infusible and insoluble, it could still be ground into powder and then softened by heat to a final shape in a mould. Both stages A and B could be brought to a completely cured thermoset C stage, by heating under pressure. This last stage was Bakelite C, or true Bakelite.’
In 1927 the Bakelite patent expired and the market were flooded with competitive thermo setting resin products of Urea and Melamine formaldehyde, and other new thermoplastic resins such as cellulose acetate, polyvinyl chloride, poly-methyl methacrylate, and polystyrene.

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Bakelite, was recognized as the ‘National Historic Chemical Landmark’. Bakelite was mouldable material with electrical non-conductivity and heat-resistance properties. He saw a wide variety of uses of the resin with many different filling materials such as cotton, powdered bronze, slate dust, wood and asbestos fibres. It was used widely in electrical appliances replacing bulky ceramic components. It was used for kitchen handles, radio and telephone casings, kitchenware, jewellery, pipe stems, toys etc. His one of the first patents describes ‘Method of making insoluble products of phenol and formaldehyde’. Bakelite Company began to produce many material forms, but laminating varnish, was most successful products. Laminating varnishes are used for coating copper circuits, paper, fabrics and for manufacturing laminate sheets. Blocks or rods of transparent cast resins, known as artificial amber, that could be machined or carved to shapes were used for pipe stems, cigarette holders and jewellery.

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Old style vacuum cleaners with Bakelite body > Wikipedia image by Rosebud23

Baekeland’s heat and pressure patents expired in 1927 soon placing the company under severe pressure from competitors like Catalin. Catalin is also a phenol formaldehyde resin, but produced by a different, two-stage process. It was produced without any fillers like sawdust or carbon black. It can be worked with nominal carpentry tools like files, grinders and cutters, and polished to dull gloss. Another advantage of it was its transparency and capacity to take bright colours.

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Colourful buttons made of Catalin of 1930s > Wikipedia image attribution: Chemical Heritage Foundation

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BLOG LINKS for WOOD and WOOD FINISHING

Post 582 by Gautam Shah

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These are few links on Wood and Wood Finishing processes and materials. Categories covered are:

● WOOD-TIMBER

● WOOD FINISHING

● WOOD COATINGS

● PAINTS-THINNERS

● COMPOSITES

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Sawn Timber > Wikipedia image by Kotivalo

 WOOD-TIMBER

WOOD RESOURCES Blog Post 217 Dt 14 Oct 2014

SOFTWOODS and HARDWOODS Blog Post 513 Dt 8 Sept 2015

WOOD COMPOSITES Blog Post 378 Dt 28 March 2015

ROSEWOOD Blog Post 376 Dt 26 March 2015

SOME VARIETIES of WOODS of Indian subcontinent Post 126 Dt 12 July 2015

WOOD-BASED PRODUCTS Blog Post 177 Dt 7 Sept 2014

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Finishing a kokeshi in Japan >Wikipedia image by Fg2

WOOD FINISHING

WOOD SURFACE FINISHING Blog Post 472 Dt 13 July 2015

WOOD FINISHES Blog Post 306 Dt 15 Jan 2015

WOOD FINISHES- Dt 22 July 2014

NATURAL OBJECTS and SELF FINISHES Dt 1 Aug 2014

SURFACE FINISHING PROCESSES Blog Post 504 Dt 24 Aug 2015

SURFACE LEVELLING Blog Post 291 Dt 31 Dec 2014

WHAT ONE CAN DO TO A MATERIAL ? Blog Post 334 Dt 12 Jan 2015

JOINTS in SURFACE FINISHES Blog Post 469 Dt 9 July 2015

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Japanese Lacquer ware in the Ostasiatiska museet, Stockholm, Sweden >Wikipedia image by Daderot

WOOD COATINGS

WOOD SURFACE PREPARATIONS for CLEAR COATINGS Dt 28 April 2014

CLEAR COATINGS Blog Post 182 Dt 12 Sept 2014

CLEAR COATINGS- Post 119 Dt 4 March 2015

SHELLAC or LAC COATINGS Dt 26 April 2014

UNDERSTANDING LACQUERS Blog Post 498 Dt 16 Aug 2015

LACQUERS or NC LACQUERS Blog Post Dt 27 April 2014

VARNISH Dt 25 April 2014

COATINGS as thin Surfacing Blog Post 482 Dt 25 July 2015

CLEAR versus PIGMENTED COATINGS Blog Post 553 Dt 29 Nov 2015

PRIMER COATINGS Blog Post 442 Dt 7 June 2015

APPLICATION of COATINGS Blog Post 300 Dt 9 Jan 2015

COATINGS -surface finishing technologies Blog Post 238 Dt 8 Nov 2014

FILM FORMING PROCESS in COATINGS Blog Post 173 Dt 3 Sept 2014

SINGLE or MULTI-COAT SYSTEMS Blog Post 437 Dt 30 May 2015

METAL COATINGS Blog Post 438 Dt 1 June 2015

GILDING Blog Post 471 Dt 13 July 2015

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Exterior Maple Wood deck staining Flickr image by Olger Fallas

PAINTS-THINNERS

SOLVENTS and THINNERS for coatings Blog Post 320 Dt 29 Jan 2015

PAINT THINNERS – 1 Blog Post 416 Dt 8 May 2015

PAINT THINNERS – Part 2 Blog Post 423 Dt 30 March 2015

SOLVENTS for THINNERS Blog Post 492 Dt 9 Aug 2015

OSB-Platte

Wood chips composite board > Wikipedia image by C. Sander and durch Urheber

 COMPOSITES

FILLERS and COMPOSITES Blog Post 169 Dt 30 Aug 2014

COMPOSITES – Part 1 Blog Post 156 Dt 17 Aug 2014

INTERFACE OF MATRIX AND FILLER in COMPOSITES Blog Post 180 Dt 10 Sept 2014

MATRIX of COMPOSITES Blog Post 168 Dt 29 Aug 2014

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Glue laminated Large span wood beam at Richmond Olympic Oval, > Wikipedia image by Thelastminute (Duncan Rawlinson)

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SPATIAL SETTINGS for HUMAN BEHAVIOUR

Post 581 by Gautam Shah (8 of 16 Behaviour in Spaces)

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NEIGHBOURHOOD       –The first setting for human behaviour:

A neighbourhood is a space with uncertain markings. The extent of a neighbourhood is flexible, depending on the person’s physical reach capacity, vehicles or means used, routing, climate, obstructions and the linkages such as bridges, access conditions etc. A mother will not allow a child beyond visual field or shout-out reach. A youngster reaches out to known places like friends’ house, school or playground. Buildings and objects on daily routes of travel seem part of the neighbourhood. Objects beyond the cross barriers, such as busy roads, water-bodies, railway-tracks, hillocks etc. are considered parts of other neighbourhoods. Neighbourhoods are politically and administratively defined as wards, zones, sections or postal code zones.

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Neighbourhood -Flushing Main St Kissena Blvd NYC > Wikipedia image by Yanping Nora Soong

The neighbourhood is a sharing space and so intra-personal activities occur here. The intra-personal behaviour rests on exploitation of the spatial conditions of the neighbourhood, such as, proper orientation, anchoring to potential locations, distancing from other humans and objects, scheduling the use-occupation, calibrating the spread of activities and by regulating the intensity of interactions. The neighbourhood space becomes a setting for behaviour more by exploitation of the features and less by way of design.

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Broad water Farm London > Wikipedia image by Iridescenti

The neighbourhood, though a public space of uncertain extent and for nonspecific users, is reasonably changing and manageable realm. The manageability develops from social attitude not to disturb the fabric that provides familiarity, reliability, predictability and security. This fabric, however, gets disturbed by new buildings, new settlers in large numbers, rapid changes in urban-architectural character.

The space and the environment, as recognized here, are beginning of an individual as well as mutual process of domestication. The behaviour in interior space ensues and persists due to the neighbourhood exterior. The involvement of exterior and interior is also stepped up by various types of inward-outward transgressions. The exterior neighbourhood space is reflection of the interior space, a carry over of the past, perception of future, or an extension of the present.

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Village in Kaita Nigeria > Wikipedia image by Shamsurabiu

 INTERMEDIATE ZONES       second setting for human behaviour:

The involvement of exterior with interior space is graded. There are two major types of grading mechanisms: Threshold areas and adjunct structures. Both of these subsist on gaps, cleavages and openings in the barriers of space making elements. The thresholds have a physical depth which alters the transition occurring through it. These depths are often inadequate to occupy or conduct a task. So adjunct structures like a verandah, shades, etc. help the process of transition.

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A proposal on the threshold by Edmund Leighton (1900) Wikipedia

The threshold areas and adjunct structures abutting the gaps, cleavages and openings are used for different types of transits and so support distinctive behaviour. Such varied uses of intermediate zones are of two main categories as seen in barriers of the interior space being transgressed inward or outward. Inward transgressions like Chowks, courtyards and cutouts, bring in the experience of the exterior. Outward transgressions like Verandah, Chhatris, pavilions, Galleries, bay, oriel and Mashrabiya windows, distend the interior space. These intermediate zones are always attached to the barrier system of the space making elements, in other words, connected to the peripheral zone. The intimate connection to the peripheral zone permits extension of the activity nominally occurring in that zone.

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Udaipur Rajasthan India Zarokha Gallery Flickr image by McKay Savage

INTERIOR SPACE     –third arena for human behaviour:

An interior space is finite due to its omnipresent enclosure. The enclosure is, however, relieved through the exchanges taking place through the gaps, cleavages and openings and the inward and outward transgressions. The concurrency of the interior space with the exterior provides spatial and environmental variations. The interior space is constituted by Six elements: 1 -Thresholds, 2 -Adjunct structures, 3 -Outward distensions, 4 -Inward ingress, 5 -Peripheral zones and 6 -Core zone.

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Crosby Theater at Santa Fe > Wikipedia image by Chyeburashka (talk / contribs)

 A threshold is a symbolic divide, and whatever spatial spread it has is a metaphoric effect. But it stops guests and discourages one venturing out. Adjunct-structure near a threshold adds physical spread and extends the periphery of the interior space. This structures offer multipurpose space but yet it remains an extension of the nearby interior space, such as drawing room, bed room, kitchen. Very specific spaces, such as storage, toilet, prayer room, etc. if have such adjunct structures, the specificity is lost. Outward-distensions Increase the interior spread of the peripheral zone or create a new one. It remains a space within a space and is affected by the happenings in the core zone. Inward-ingress provide the environmental variation to the static core zone, very often disturbing the dominance of the core. Peripheral-zones allow wide variety settings for human behaviour, but these are location and situation specific and core zone dependent. Core-zone is multipurpose area and, so time scheduling and activity spread, are key determinants of human behaviour. Both are exploited for social interactions but needs for environment, privacy, intimacy, expression and communication force an activity first to the peripheral zones and then to inward and outward transgressions.

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Bazaar ao Silk Mercers in Cairo > Wikipedia + Wellcome blog post (archive)

 VIRTUAL SPACES     –-Fourth sphere for human behaviour:

Virtual space is unreal on one or both the counts, exterior and interior. Here the physical presence of either exterior or interior realms, are made through notional representations. Many such conditions created with make-believe conditions, and so have limited efficiencies, or very concentrated space and intensive time experience. Make-believe do mould the human behaviour with compact and direct effects. Make-believe effects are useful for their novelty or experience.

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Metro station Paris > Wikipedia image by Stephen Butterworth from Atlanta, GA USA

Other indirect manifestations of human behaviour are in the expressions’ through art, craft, performances, writing, etc. Here the expressions represent a set of emotions and so are interpreted for the expression of behaviour. The exercise is likely to be very subjective, yet an ethnic society or mature culture offers some common insight.

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Steampunk Cafe Capetown > Wikipedia image by Author http:www.yatzer.com

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This post forms 8th of the Sixteen part of Lecture series on Behaviour in Space that I will be offering for the spring semester starting Jan 2016 (to mid April2016) at School of Interior Design, Faculty of Design, CEPT University, Ahmedabad, India.

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PLATES, SHEETS and FILM MATERIALS -part I

Post 580 by Gautam Shah

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Sheets are surface materials with stiff to flexible body. Sheets have high proportion of surface area in comparison to volume. A sheet (mainly metal) is thinner than 6mm when compared to the counterpart, the plate. A film is a thinner formation than a sheet. Sheets, Plates and Films, all have different properties and uses. A sheet is used for packing tins, air-conditioning ducts, automobile bodies, furniture, appliances, utensils, pipes, purlins, etc. A plate is used for heavier structural entities like ships, tunnel sections, pressure storage tanks, chemical reaction vessels, reactors etc. A film is an independent entity applied as a cover or foil, formed by material deposition (gas, liquid or solid), or one integrated to a substrate (surface allying, surface ceramic formation or molecule deposition).

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Woolaroc Oklahoma Silver Navajo belt buckle of Sheet metal > Wikipedia image by Wolfgang Sauber

Metal sheets are formed chiefly by hot or cold rolling. Polymer, glass, cement, paper, gypsum sheets are extruded or cast. Foams can be classed as cast sheets. Soft sheets such as fabrics, mats etc. are formed by weaving, netting or pressing the mass of fibres. Palm leaves, leathers, skins, timbers, stones, mica, are naturally formed composite sheets.

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Extruded Sheet metal can for beverage > Wikipedia image by http://www.flickr.com/photos/marcodede/116648094/ by Marcos Andre

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Cement cast sheet (board) > Wikipedia image by Swtpc6800 en:userSwtpc6800 Michael Holley

 In modern age substantial volumes of sheets are manufactured by sheet lamination or layering, particulate forming, impregnating woven or non-woven structures, or by sandwiching various types of sheets. A sheet could have skins formed from other or same materials (that constitutes the core). Sheets formed by rolling or extrusion could be in long lengths or small width strips. Sheets, otherwise, are formed and sized to ‘standard’ sizes. The ISO standard sizes (width and length) are in multiples of 300mm. Sheet forms like fabric are manufactured and sized in multiples of 100mm. Paper is supplied in sizes (ISO standard) of series A & B (such as A0, A1, etc.). Standardization of sheet sizes encourages standardization of manufacturing plants, processes, transport, storage and wastage rationalization.

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Embossed Metal floor deck sheets > Pixabay free images by yourschantz

Plates, Sheets and Films, basically have distinctive processing methods, though some may carry common terms. Plates processing, require greater effort to shape, cut or punch through due to their thickness. Plates have characteristic flexural stiffness. So sheets like plywood and other composites behave like plates. Plates may show different stress behaviour on two faces, such as seen in rolling, bending and welding processes. Plates are assembled by welding, rivetting, forging, mechanical joining and occasionally situational fixing. Sheets are processed by methods such as cutting, punching plain bending and deformation bending. Metal sheets formed by cold-forming. Sheets are assembled by butt welding, adhesion joining, seaming, rivetting, screwing and situational fixing (e.g. dove tail joining of wood materials). Film materials in sheet forms are applied by static charging, adhesion or heat melting.

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Expanded sheet metal Lattice > Wikipedia image by Sven Teschke Budingen

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Sheet metal cabinets > Wikipedia image by sailko

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Thin Film material > Wikipedia image by Fieldsken Ken Fields

Malleable metal sheet products are manufactured mainly by stamping or pressing and drawing. Some drawn parts go through changes in body thickness (such as the kitchen pressure cooker forming). Large plastic deformation is an advantageous property for metals’ sheets. During stamping or micro drawing often there are no changes so some processes like corrugation or furniture are done on pre-coated sheets. Stiffer sheets like wood veneers and plywoods, stone (for cladding), acrylics, etc. must be sawn and in few instances shear cut. Sheets show anisotropy or directional variation of mechanical properties where the material reacts differently in different directions. Metal and composites take advantage of this characteristic while creating geometric compositions.

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Corrugated Paper boards Image attribution: Chris 73 / Wikipedia Commons

Sheets are further processed like folding, corrugation, embossing, and perforation to impart geometric qualities. Sheets are engraved or etched by mechanical, laser and plasma-based processes. Simple processes like grinding, rubbing, ironing, burnishing, flame treatments are applied on wood, paper, leather, fabrics and plastics to remove or suppress surface irregularities. Chemical treatments include Linear Plasma-based processes, nitridation, oxidation electroplating, zinc coating, chromate and phosphate treatments, coating, painting, material deposition, surface hardening, surface alloying and cementation. These alter the surfaces for polarity, wettable, electrical conductive, weldable or solderable, corrosion resistant, tarnish proof, chemical resistant, high wear, hardness and remove surface irregularities.

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Storage tanks of Plates > Wikipedia image by Alex Marshall (Clarke Energy)

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