Health in home and town . ng down steeproads, as well as up, is difficult and takes more strengthand time than on nearly level roads. A fine street mustbe smooth. Uneven places or stones lying in the roadmake driving very unpleasant. Kinds of Streets. — In order to make traffic andcleaning easy, most of the city streets are improved orpaved. The construction of roads is one of the prob-lems of engineering. All roads are built with at leasta foundation and a surface layer, which forms the pave-ment. The kind of pavement used gives its name tothe kind of street. The pavements of streets are buil
Health in home and town . ng down steeproads, as well as up, is difficult and takes more strengthand time than on nearly level roads. A fine street mustbe smooth. Uneven places or stones lying in the roadmake driving very unpleasant. Kinds of Streets. — In order to make traffic andcleaning easy, most of the city streets are improved orpaved. The construction of roads is one of the prob-lems of engineering. All roads are built with at leasta foundation and a surface layer, which forms the pave-ment. The kind of pavement used gives its name tothe kind of street. The pavements of streets are builtof earth, gravel, stone blocks, wood blocks, brick,asphalt, and broken stone. THE CITY STREETS 217 Gravel Streets. — In the suburbs of cities there arestill many streets built of earth. There is usually littletraffic, and the time has not yet arrived for the use ofmore enduring material. Many cross streets of citieswere made of gravel before the introduction of the moremodern paving, and are still doing good A Cobblestone Pavement Stone Block Paving. — Most of the older cities inAmerica can still show many miles of streets with theold cobblestone pavements. They were an improve-ment on mud, but are difficult for teaming and verypainful for driving. Many of these streets have beenrepaved or covered with smoother material. In themore modern stone pavements the blocks are cubicalin shape, and make a smooth pavement. The dis-advantages of this kind of pavement are that thestreets are noisy, wear smooth and slippery, and aredifficult to keep clean. Wood Pavements. — Some of the best pavementshave been made of wood blocks of either cylindrical or 2l8 HEALTH IN HOME AND TOWN cubical shape. This pavement is perfectly smooth,durable, noiseless, and without dust. Some of them,however, have proved very slippery when wet. Mostof the large cities have experimented with this kind ofpavement, and Chicago has 650 miles of it.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsanitat, bookyear1922
