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Apply basic economics and ergonomic concepts to evaluate engineering applications

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Such high costs prevent people from buying the wheel chair. Aditionally, te design has no provisions for temporary storage of items by the users. I is also important to note that that the current design is not adjustable and hence limits mobility and comfort (Cooper, 2008). Cnventionally, ajustability is important given that it allows wheelchair to be set-up for optimal propulsion efficiency, ad hence lowers the risk of injury. Fames may be folding or rigid. Rgid frames tend to perform better when maneuvering. Flding frames are often easier athough many rigid chairs can get to a very small size by removing the wheels and folding down the backrest.

Bsed on the identified disadvantages, te paper proposes a number of modifications to make it better. Te cabin will allow the wheel chairs users to temporary store items such as files which may come in handy from time to time. Tey can also bring them along when they move and hence not need to go back to a table to get them each time they need to use them.

metals instead of wire spikes increases the overall cost of wheelchair tires and hence the cost of the wheel-chair. Rplacing this wire spikes, smilar to those used in conventional bikes can marginally lower the overall costs of the wheel-chair. Pshing, mneuvering and handling of clients in manual wheelchairs are largely associated with musculoskeletal injuries. Mltiple researchers have reported increased risk for staff when pushing bariatric wheelchairs as a result of increased size and weight of not just the wheel chair but the users as well (Fitzgerald, 2001). Sme the risks associated with wheel chairs include; Te final proposed design is a folding cross-brace frame style measuring 18x18 in terms of seat depth and seat width.

Te leg rest angle is set at 60 degrees. Frther, tere are 15 degrees of back-rest angle adjustment from vertical position. Te seat dump allows for adjustment from horizontal to 7 degrees below horizontal through change of axle position. Te rear axle has 8 probable positions which range from 3.75 inches front to back and 1. 5inches upwards and downwards. Te angle is 10 degrees from vertical position in order to keep caster stem in a direction perpendicular to ground.

Te footrests can be moved to 3 positions with a range of 3 inches. Te materials manufacturing processes to be used in. ..

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