Dear Reader,

I am planning to post my progress towards GATE preparation in this blog.I will make notes in this blog as I prepare, which might be useful to fellow students.Feel free to follow my blog and post commeents, suggestions and queries. Syllabus and useful links appear below blogs.Follow my blog to get regular updates about my posts. Go through blog archive(right hand side of blog) to access earlier posts. You can email me to minupradeep@hotmail.com, if you need more preparation material, older question papers etc.

don't miss this post

http://gateprep-architecture.blogspot.in/2013/11/formulals-conversions-and-data-required.html

update: I qualified GATE 2014 with a score of 892 and all india rank 6....

If anyone of you want to contribute to/update the blog, kindly write to my email minupradeep@hotmail.com. I will add your contributions with proper credits

Also, if my blog has helped any of you clear GATE, do let me know, I would like to publish your names, scores, ranks, contact info etc. , so that future aspirants may contact you and be inspired from you

Thursday, December 19, 2013

Autocad Tutorials

http://www.youtube.com/watch?v=l2nctVPR1Pg&list=PL970B66C256FA05E1

also check out other videos from youtube. a quick way to refresh your autocad memory

Tuesday, December 3, 2013

Development Administration and Management

UDPFI guidelinrs fo Urbam Development 

http://mhupa.gov.in/w_new/SummaryUDPFI.pdf

73rd and 74th Constitutional Amendments(nagapalika bill)/JNNURM

http://www.slideshare.net/umeshvarma1/municipal-structures-in-india
http://indiacode.nic.in/coiweb/amend/amend74.htm
http://jnnurm.nic.in/wp-content/uploads/2011/01/RTP_MOD-2.1.pdf

National Urbanisation Policy

http://www.preservearticles.com/2012013022125/short-essay-on-national-urbanization-policy-india.html

Rajiv Awas Yojna (slum free india/ housing for slums)

http://mhupa.gov.in/w_new/RAY%20Guidelines-%20English.pdf

Indira Awas Yojana(Housing for Rural Poor)

http://iay.nic.in/netiay/home.aspx

Valmiki Ambekar Awas Yojana

http://www.gktoday.in/valmiki-ambedkar-awas-yojana-vambay_29/

Special Residential Zones

http://www.thehindu.com/news/cities/chennai/special-residential-zones-may-pick-up-reality-
checks/article16804.ece

PURA

http://en.wikipedia.org/wiki/Providing_Urban_Amenities_to_Rural_Areas

NREGA

http://en.wikipedia.org/wiki/Mahatma_Gandhi_National_Rural_Employment_Guarantee_Act


Eminent Domain: inherent power of state to seize private property without the owner's content

Police Power: Regulating behaviour and enforcing order within the state territory

Transfer of Development Rights: Protecting land by reassigning the rights to develop from one area to another

Land Pooling/Readjustment

The concept of land readjustment is to assemble small rural land parcels into a large land parcel, provide it with infrastructure in a planned manner and return the reconstituted land to the owners, after deducting the cost of the provision of infrastructure and public spaces by the sale of some of serviced land.

Sunday, November 24, 2013

Lift and Escalator codes

Barrier Free Design

The term ‘ambulant disabled’ refers to people with a wide range of
disabilities who are not regular wheelchair users. This could include,
for example, people who have diabetes, epilepsy, multiple sclerosis
or cancer.

non ambulant disabled- wheelchair users

Sunday, November 17, 2013

Architectural Movements

Earthquake Terminology

Focus: The geographical point on the earths surface vertically above the originating source.
Epicentre: The originating source of the seismic wavesinside the earth
Centre of mass: The point corresponding to the centre of gravity of a structural system
Centre of Stiffness: the point through which the resultant forces of a structural system act

http://www.iitk.ac.in/nicee/IITK-GSDMA/EBB_001_30May2013.pdf

Saturday, November 16, 2013

Traffic and Transportation Planning

Sighting Distance : The length of road ahead of vehicle which should be visible to enable a driver to stop in case of an obstruction on the road.

Stopping Distance: Distance covered by a vehicle from the instant a driver sees an obstruction ahead and brings the vehicle to a stop.

Overtaking Sight Distance: Distance required by a vehicle to overtake and pass another vehicle moving in the same direction but at a lower speed.

Fundamental Parameters of Traffic Flow

http://nptel.ac.in/courses/105101087/downloads/Lec-30.pdf

Transportation Forcasting

http://en.wikipedia.org/wiki/Transportation_forecasting

Wednesday, November 13, 2013

PERT/CPM

Materials and Structural Systems

Grades of Cement

M33
M43
M53
33, 43, 53 indicate the 28 day compressive strength of cement

Concrete Proportions

M 5-    1: 5:10 (cement: fine agg: coarse aggregate)
M 7.5- 1: 4: 8
M10-   1:3:6
M 15-  1: 2: 4
M 20-  1: 1.5: 3
M 25-  1 : 1: 2

Trusses

http://web.aeromech.usyd.edu.au/statics/doc/trusses/trusses1.pdf


Plumbing Systems and Water supply

Systems of Plumbing:

http://civilatwork.blogspot.in/2013/03/building-drainage-systems-of-plumbing.html

Hazen -Williams Formula

used for pipes larger than 2" and smaller than 6' in dia

v = 1.32.Ch.R^0.63.S^0.54
v= average velocity ft/s
Ch=Hazen Williams Coefficient
R=Hydraulic radius of flow conduit(ft)
s=ratio of hL/L, energy loss/head lenghth of conduit(ft/ft)

in SI Units

v = 0.85.Ch.R^0.63.S^0.54
v= average velocity(m/s)
Ch=Hazen Williams Coefficient
R=Hydraulic radius of flow conduit(m)
s=ratio of hL/L, energy loss/head lenghth of conduit(m/m)

Volume flow rate Q= Av




Intelligent Buildings/Building Automation Systems/High Tech Architecture

http://en.wikipedia.org/wiki/Building_automation

Building automation describes the advanced functionality provided by the control system of a building. A building automation system (BAS) is an example of a distributed control system. The control system is a computerized, intelligent network of electronic devices designed to monitor and control the mechanical, electronics, and lighting systems in a building.[1]
BAS core functionality keeps the building climate within a specified range, provides lighting based on an occupancy schedule, monitors system performance and device failures, and provides malfunction alarms (via email and/or text notifications) to building engineering/maintenance staff. The BAS functionality reduces building energy and maintenance costs when compared to a non-controlled building. A building controlled by a BAS is often referred to as an intelligent building or a smart home.

High Tech Architecture

Tuesday, November 5, 2013

Visual and Urban Design

Thermal Comfort

http://en.wikipedia.org/wiki/Thermal_comfort

http://faculty.arch.utah.edu/young/TEACHING/ARCH4350F09/RR3_BioclimaticChart.pdf

Venturi Effect: It is essentially about looking at design in volumes i.e. when you force a wind to move into a narrow opening and expand into a larger volume, the effect can be quite incredible. This design strategy creates what is referred to as wind tunnels and keeps the living spaces cool and airy." In fact this idea always works irrespective of the predominant wind direction"

Stack Effect: Stack effect is the movement of air into and out of buildings, chimneysflue gas stacks, or other containers, and is driven by buoyancy. Buoyancy occurs due to a difference in indoor-to-outdoor air density resulting from temperature and moisture differences. The result is either a positive or negative buoyancy force. The greater the thermal difference and the height of the structure, the greater the buoyancy force, and thus the stack effect. The stack effect is also referred to as the "chimney effect", and it helps drive natural ventilationinfiltration and fires.

Formulals, Conversions and Data required to solve gate problems

Conversions

1litre= .001 cubic meter
1m^3=1000litres
1BTU(british thermal unit) = 1055 joules
1 btu/hr=3.412 joules/s

Area 
100 cents = 1 Acre
1 Acre = 4840 sq yards
1 yard = 3' or 36"
1 cents = 435.60 sq ft
1 sq. m = 10.76 sq. ft

1 Acre= 4047 sq m
2,47 cents = 1 are(100 sq meter)
2.47 acres = 1 hectare(10,000 sq meters)

Fibonacci series

Fn= Fn-1 + Fn-2

0,1,1,2,3,5,8,13,21....

Golden Ratio

 \frac{a+b}{a} = \frac{a}{b} \ \stackrel{\text{def}}{=}\ \varphi,

\varphi = \frac{1+\sqrt{5}}{2} = 1.6180339887\ldots.


Slope/ Gradient
http://en.wikipedia.org/wiki/Grade_(slope)

Contour interval: the difference in altitude represented by the space between two contour lines on a map

PERT- Te(expected time)= (O +4M + P)/6 where O=optimistic time, M= most likely time, P=pessimistic time.
V(variance)=( (P-O)/6)^2
Project variance= sum of variances along the critical path
Standard deviation = sq root of variance

unit mass of reinforced concrete= 2400kg/m3
unit wt of reinfirced concrete= 2400 * 10(9.8)N/m3
density of steel = 7850kg/m3

BM and SF diagram

http://www.youtube.com/watch?v=q0DghZBR-AU

Hooks Law, Young;s Modulus, Bulk Modulus, Poisson's Ratio

http://www.youtube.com/watch?v=QMmOMLstGm0

Scale of Aerial Photograph = Focal length/ Altitude above Ground level

Forecasting Population

Arithmatic method

dP/dt = Ka
P = P1 + Ka (t - t1)  

            P = population
            t = time

            Ka = arithmetic growth constant

Geometric method

dP/dt= KgP
lnP = lnP1 + Kg (t - t1)
Kg =lnP2-lnP1/t2-t1  = ln[P2/P1]/t2-t1

            P = population
            t = time
            Kg = geometric growth constant

            Note: lim (1+K)1/K = e = 2.718… base of the natural logarithms

                        K®0



1 lux = 1 lumen/sq meter
lux is the unit of illuminance
 Flux= illumination required(lux) x surface area(sq m)
Flux(lumen output)(received)= MF(maintenance factor) x UF(utilization factor) x Flux(installed)
depreciation factor = reciprocal of maintenance factor
lux=candela/d^2
cd(candela) = lm(lumen) / ( 2π(1 - cos(º/2)) )
for isotrophic light source(all directions), lumen = candela x 4x22/7
http://www.compuphase.com/electronics/candela_lumen.htm

Room Index(RI)= Lx W/[Hm x (L+W)]
Hm=mounting height

Spacing to height ratio SHR=  1/Hm x[ (A/N)^ 1/2]

Acoustics

T(reverbaration time in seconds)=  .161x V(volume in m3)/A(sound absorption power in m2-sabine = area x coeffcient of absorption)
Lp = 20 log 10(Prms/Pref) dB
Lp2 = Lp1 + 20 log10(r1/r2)
lp-sound pressure
sound level- 10 log 10(Prms/Pref) dB

Norris Eyring Formula




























Lp= Lw-10.log4πr2

The handling capacity(lifts) is calculated by the
formula: H= 3OOxQx100 /TXP
where
H = handling capacity as the percentage of the peak population handled during 5 min period,
Q = average number of passengers carried in a car,
T = waiting interval, and
P = total population to be handled during peak morning period. (It is related to the area served by a particular bank of lifts.)

The value of ‘Q’ depends on the dimensions of the car. It may be noted that the car is not loaded always to its maximum capacity during each trip and, therefore, for calculating ‘H” the value of ‘Q’ is taken as 80 percent of the maximum carrying capacity of the car.

The waiting interval is calculated by the formula:
 T= RTT/N
iv
where
T = waiting interval;
N = number of lifts, and
RTT= round trip time, that is, the average time required by each lift in taking one full load of passengers from ground floor, discharging them in various upper floors and coming back to ground floor for taking fresh passengers for the next trip.


Thermal transmittance, also known as U-value, is the rate of transfer of heat (in watts) through one square metre of a structure divided by the difference in temperature across the structure. It is expressed in watts per metres squared kelvin, or W/m²K. Well-insulated parts of a building have a low thermal transmittance whereas poorly insulated parts of a building have a high thermal transmittance.
Φ = A × U × (T1 - T2)
where Φ is the heat transfer in watts, U is the thermal transmittance, T1 is the temperature on one side of the structure, T2 is the temperature on the other side of the structure and A is the area in square metres.

The formula for ventilation heat loss is:

Q = N . V . Sp.ht . dt

Where;
Q = heat loss (Watts) (W) 
N = Number of air changes per hour. An air change is one room volume.
V = Room volume (m3) 
Sp.ht. = Specific heat factor for air. This is found from the following formula. 
Sp. Ht. Factor = ( Specific heat capacity of air x 1000 to convert from kJ to Joules x density of air ) / 3600 to convert from hr to secs.
Sp. Ht. Factor = (1.01 x 1000 x 1.2 ) / ( 3600 )
Sp. Ht. Factor = 0.34 
dt = temperature difference between inside and outside (oC)


Duct cross sectional area A(m2)= q(air flow rate m3/s)/v(air speed m/s)


Traffic formulas


q(flow=no vehicles /time)=1/h(time headway=time between rear bumper to rear bumper)
 density k=n/distance(number of vehicles occupying a given lengthnof highway

distance headway= distance between corresponding points in two successive vehicles
k(density)=1/s(distance headway)


Plumbing and Water Supply

Hazen -Williams Formula

used for pipes larger than 2" and smaller than 6' in dia

v = 1.32.Ch.R^0.63.S^0.54
v= average velocity ft/s
Ch=Hazen Williams Coefficient
R=Hydraulic radius of flow conduit(ft)
s=ratio of hL/L, energy loss/head lenghth of conduit(ft/ft)

in SI Units

v = 0.85.Ch.R^0.63.S^0.54
v= average velocity(m/s)
Ch=Hazen Williams Coefficient
R=Hydraulic radius of flow conduit(m)
s=ratio of hL/L, energy loss/head lenghth of conduit(m/m)

Volume flow rate Q= Av

Ammortisation formula for sinking fund


+FV%28PMT%29+=+%28PMT+%2A+%28%281%2Bi%29%5En-1%29%2Fi%29+

Compound Interest


Regular Compound Interest Formula
r= rate of interest as decimal
n= no of times interest is compounded in ayear
t= no of years
 








Monday, November 4, 2013

Indian Architecture

Khajuraho Style
1.Griha-house
2.Grama-village
3.Palli- settlement of wild tribes
4.kheta- a place fortified by a mud wall or by a river or hill surrounding it
khetaka- hamlet
5.kharvata- market town, a poor town surrounded by a low wall, while according to kautilya-centre of union of 200 villages
6.dronamukha- a town with a harbour like ...centre of union of 400 villages
durga- citadel
7.pattana,pura- a large town or centre of trade/a mart for precious metals or a mining centre
8.matamba- open town associated with a cluster of 10,000 villages/fortified place in which produce from the field was deposited for safe custody
9.nagara- a town exempted from paying any of the 18 taxes levied on a village
10.rajadhani-capital
shakanagara- suburb
11.nigama-settlement of merchants
agraharam- brahmin quarter of village
12.samvatta-kotta- a fortified place or refuge

Ancient Indian Settlements

http://www.slideshare.net/ctlachu/ancient-system-of-town-planning-in-india

Landscape

The dripline is the guide measurement used to prevent unnecessary damage to treesduring construction works. It is defined as the outermost circumference of the tree'scanopy, from which water drips onto the ground. The 'dripline area' is taken to include the soil and roots that lie within that circumference

Xeriscaping is landscaping and gardening that reduces or eliminates the need for supplemental water from irrigation

A swale is a shallow channel with gently sloping sides. A swale may be either natural or human created. Artificial swales are often infiltration basins, designed to manage water runoff, filter pollutants, and increase rainwater infiltration

Delonix Regia- gul mohar
Casia Fistula- Amaltas(konna poovu)
Tectona  Grandis - Teak
Mimusops Elengi- "elanji-malayalam, spanish cherry, medlar,bullet wood, maulsari-hindi
Dalbergia siso- Indian Rosewood(deciduos) sheesham

wedelia trilobata-  creeper/ groundcover


Ixora coccinea- jungle geranium-Chethi poovu
Ixora Chinensis-chetti poovu chinese variety
Jasminum Augustifolium- jasmine
bignonia magnifica- purple bignonia-climber

Japanese Gardens
http://en.wikipedia.org/wiki/Japanese_garden

Mughal Gardens

http://en.wikipedia.org/wiki/Mughal_gardens

Chinese Gardens


 Japanese vs Chinese Gardens


French garden

English Garden- (invented by William Kent and Charles Bridgeman)

Important buildings

Principles of City Planning

Urban Pattern

An urban pattern is the geometry, regular or irregular, formed by routes, open spaces and buildings. 

Grain  is the degree of fineness or coarseness in an urban area. Texture  is the degree of mixture of fine and coarse elements

Urban Planning Movements


City Beautiful Movement

http://en.wikipedia.org/wiki/City_Beautiful_movement

Garden City movement

http://en.wikipedia.org/wiki/Garden_city_movement


Urban Planning Theories

Sector theory


Multiple Nuclei Theory


Neighbourhood theory


Central Place Theory

http://en.wikipedia.org/wiki/Central_place_theory

Concentric Zone Theory

http://en.wikipedia.org/wiki/Concentric_zone_model

Theories of Economic Growth


read chapter 6 from the above google book. you can buy a copy too. helpful for gate planning questions

Input output Analyses



Grid Iron
Washington DC
Chandigarh
Mohen-jo Daro
Tokyo
Los Angeles
  
Radial/Spideweb/radio concentric/ring
New Delhi

Finger Plan/Star
Copenhagen

Core Form-dense vital center
Dallas

Linear
Mumbai, Stalingrad
Broadacre

Galaxy[multi nuclei]
Ohio, North Germany

Ring Form

Holland, San Francisco

Polycentered Net(widespread with differentiated foci)

Detroit

Architect-Planners

Hippodamus- Father of urban planning

http://en.wikipedia.org/wiki/Hippodamus_of_Miletus

Leon Battisda Alberti

http://en.wikipedia.org/wiki/Leon_Battista_Alberti#Study_of_perspective

Sir Patrick Abercombie

Ebenezer Howard


Le Corbusier


Arturo Soria Y Mata (Linear City)



Architectural Terminology

General

Squinch: a straight or arched structure across an interior angle of a square tower to carry a superstructure such as a dome.


Prehistoric


dolmen: also known as a portal tomb, portal grave, or quoit, is a type of single-chamber megalithic tomb, usually consisting of three or more upright stones supporting a large flat horizontal capstone (table), although there are also more complex variants. Most date from the early Neolithic period (4000 to 3000 BC). Dolmens were usually covered with earth or smaller stones to form a barrow, though in many cases that covering has weathered away, leaving only the stone "skeleton" of the burial mound intact.

Menhir (French, from Middle Breton: men, "stone" and hir, "long"[1]), standing stone, orthostat, or lith is a large upright standing stone. Menhirs may be found singly as monoliths, or as part of a group of similar stones. Their size can vary considerably, but their shape is generally uneven and squared, often tapering towards the top. Menhirs are widely distributed across Europe, Africa and Asia, but are most numerous in Western Europe; in particular in Ireland, Great Britain and Brittany. There are about 50,000 megaliths in these areas,[2] while there are 1,200 menhirs in northwest France alone.[3] Standing stones are usually difficult to date, but pottery found underneath some in Atlantic Europe connects them with the Beaker people. They were constructed during many different periods across pre-history, erected as part of a larger megalithic culture that flourished in Europe and beyond.


Islamic Architecture

Mehrab: A niche in the wall of a mosque or a room in the mosque that indicates the direction of Mecca.

Muqarnas: An architectural ornamentation reminiscent of stalactites, muqarnas developed around the middle of the 10th century in northeastern Iran and almost simultaneously — but seemingly independently — in central North Africa; they take the form of small pointed niches, stacked in tiers which project beyond lower tiers, commonly constructed of brick, stone, stucco, or wood, clad with painted tiles, wood, or plaster, and are typically applied todomespendentives, cornices, squinches and the undersides of arches and vaults.

Egyptian Architecture

Mastaba:  is a type of ancient Egyptian tomb in the form of a flat-roofed, rectangular structure with outward sloping sides that marked the burial site of many eminent Egyptians of Egypt's ancient period. Mastabas were constructed out of mud-bricks (from the Nile River) or stone. In the Old Kingdom, kings began to be buried in pyramids instead of mastabas, although non-royal use of mastabas continued for more than a thousand years.
Pylon is the Greek term for a monumental gateway of an Egyptian temple (Egyptian bxn.t in the Manuel de Codage transliteration[1]). It consists of two tapering towers, each surmounted by a cornice, joined by a less elevated section which enclosed the entrance between them.[2] The entrance was generally about half the height of the towers. Contemporary paintings of pylons show them with long poles flying banners.


Roman

In ancient Rome, Thermae (from Greek thermos, "hot") and balnea (Greek βαλανείον, balaneion) were facilities for bathing. Thermae usually refers to the large imperial bath complexes, while balneae were smaller-scale facilities, public or private, that existed in great numbers throughout Rome.


Brick Shapes
Wood Section
Door Terminology
Window Terminology

Window Types

Arch Terminology

Cloister


Barrel Vault


Cloister Vault


Conical Vault


Groin vault


Rampant Vault


List of Vaults



eg of igneous rock
granite
metamorphic rock
marble, slate
sedimentary
limestone, sandstone

PlatonicSolids






Friday, October 25, 2013

Some useful books for planning

Right now i am solving gate 2007 qp. Simply not solving, but researching all the multiple choices. i will post all useful links here as i study. BTW i found some books which gives a good overview of planning topics. will share the name of books
1. Architecture and town Planning by satish Chandra Agarwala(dhanpat rai and co)
2. Town Planning- by Rangwala(charotar publishing house)
3. Fundamentals of town planning- by G K Hirasker(dhanpat rai )
4. Time Saver Standards for Urban Planning- Watson, Donald, Google books
http://books.google.co.in/books?id=OeHdu9BqO-0C&pg=RA3-PA27&dq=fine+grain+uniform+texture+housing&hl=en&sa=X&ei=83d8UuiiEOW1iAe_yYCYBw&ved=0CC8Q6AEwAA#v=onepage&q=fine%20grain%20uniform%20texture%20housing&f=true

 These books cover housing. planning, traffic planning etc and each cost around Rs. 100, except the time savers which will cost abour Rs. 3000. Available in most academic bookstores. I did hunt around for gate prep books for architecture to no avail. So we will have to gather info on our own. Internet is an excellent resource to research while solving the question papers.

Important Architects

Indian


Ar. Kanvinde

http://www.slideshare.net/akshaychecker/ap-kanvinde
http://en.wikipedia.org/wiki/Achyut_Kanvinde

J. A. Stein
en..org/wiwikipediaki/Joseph_Allen_Stein

Anant Raje
http://en.wikipedia.org/wiki/Anant_Raje

Raj Rewal
http://www.slideshare.net/harrydhillon/raj-rewal
http://insaindia.org/pdf/Innovation_in_Architecture.pdf

B V Doshi

http://en.wikipedia.org/wiki/B._V._Doshi

Charles Correa

http://en.wikipedia.org/wiki/Charles_Correa

Hashmukh Patel

http://www.hcp.co.in/file_manager/publications/HCP_Monograph.pdf

Laurie Baker

http://en.wikipedia.org/wiki/Laurie_Baker

Raj Rewal

http://www.rajrewal.in/project-list-bt-res.htm

 U C Jain
http://www.ucjain.com/pdf/UCJ_Architecture_Planning.pdf

International


Eliel Saarinen


Eero Saarinen

http://en.wikipedia.org/wiki/Eero_Saarinen

Joseph Paxton(crystal Palace)

http://en.wikipedia.org/wiki/Joseph_Paxton

Mies Van Der Rohe ("less is more") ("god is in the details")(skin and bone architecture)(barcelona chair)

http://en.wikipedia.org/wiki/Ludwig_Mies_van_der_Rohe

Le Corbusier

http://en.wikipedia.org/wiki/Le_Corbusier

Walter Gropius

http://en.wikipedia.org/wiki/Walter_Gropius

Louis Sullivan (form follows function)( father of skyscrapers)

http://en.wikipedia.org/wiki/Louis_Sullivan

Marcel Breuer

http://en.wikipedia.org/wiki/Marcel_Breuer

Kenzo Tange


Alvar Aalto


Tadoa Ando

http://en.wikipedia.org/wiki/Tadao_Ando

Norman Foster

http://en.wikipedia.org/wiki/Norman_Foster,_Baron_Foster_of_Thames_Bank

Philip Johnson (father of intelligent design movement)

http://en.wikipedia.org/wiki/Philip_Johnson

I M Pei

http://en.wikipedia.org/wiki/I.M._Pei

Cesar Pelli

http://en.wikipedia.org/wiki/C%C3%A9sar_Pelli

Richard Meier

http://en.wikipedia.org/wiki/Richard_Meier

Renzo Piano

http://en.wikipedia.org/wiki/Richard_Meier

Robert Venturi(less is bore)

http://en.wikipedia.org/wiki/Robert_Venturi

Micheal Graves

http://en.wikipedia.org/wiki/Michael_Graves

 Frei Otto

http://en.wikipedia.org/wiki/Frei_Otto

Rem Koolhaas

http://en.wikipedia.org/wiki/Rem_Koolhaas

Santiago Calatrava

http://en.wikipedia.org/wiki/Santiago_Calatrava

Daniel Libeskind

http://en.wikipedia.org/wiki/Daniel_Libeskind

Bernard Tschumi(deconstructivism)