We willnot get the affects you wantFor example if

We start by a case study and tried to learn from it about our subjectdefining what is meaning of deaf and dumb .what cause it ,the leaves ofhearing impaired and there types .what are the effects of hear loss thenIn the end we start with the deaf design principles listing them andtalking about each one.Hearing impaired or hearing loss is due to problems withthe ear canal ear drum or middle ear and its little bonesThere are four leaves of hearing loss:mild hearing impairmentmoderate hearing impairmentsevere hearing impairmentprofound hearing impairment,There are four types of hearing loss:Auditory processing disorders.ConductiveSensorineuralThere are four major ways in which hearing loss affects1.It causes delay in the development of receptive andexpressive communication skills (speech and language).2.The language deficit causes learning problems that result inreduced academic achievement.3.Communication difficulties often lead to social isolation andpoor self-concept.4.It may have an impact on vocational choicesDeaf Space is a definition of architecture that fits for Deafpeople including elements of design to meet the specific needsof Deaf people because they require an unobstructed line ofsight .It is not only used by Deaf people, but everyone canexperience the space, which could enhance the use of spaceand improve the quality life as well.There are five main problems area or Space designprinciple that a person needs to keep in mind whiledesigning for the deaf and dumb and these includes1.space and proximity,2.sensory reach,3.mobility and proximity,4.light and color5.acoustics that the Deaf experience within the builtenvironment.In order to maintain clear visual communicationindividuals stand at a distance where they can seefacial expression and full dimension of the signer’s”signing space”. The space between two signerstends to be greater than that of a spokenconversation. As conversation groups grow innumbers the space between individuals increases toallow visual connection for all parties. This basicdimension of the space between people impacts thebasic layout of furnishings and building spaces.Poor lighting conditions such as:glare, shadow patterns, poorly distributed lightand flicker.Are major reasons to the causes of eyediscomfort and tiredness .That can lead to a lossof concentration, blurred vision, dry burningeyes, headaches and even physical exhaustion.Different lighting can also change the color of the placewhich is important because you want to choose light colorsthat contrast skin tone to highlight sign language andfacilitate visual way findingBut if you choose the right colors but bad lighting you willnot get the affects you wantFor example if you put yellow or orange lighting in the placethe colors will look more brighter then you want which inlong term can cause eye dis comfortPlacement to the lightYou should not place the light in the field of vision or near a reflected objectbecause it cause glare which with time disability and discomfortFew main causes for glare is :Light sources of high brightness, low brightness, extensive size of glare sourand you should also avoid placing a light against a dark objects like: darkdecorations, dark callings or wallYou can choose light colors for the walls and callings to soften the effects ofbright light and to contrast skin tone to highlight sign language and facilitatevisual way finding.*You should place the lights in a way that the lights be over lapping and not leave dark spots*don’t place the lights to Hight that the light wouldn’t get to the working space or too low that would causeglare*By spreading the light over a large area by lighting the callings and walls you can get ride of the glare