MODERN METHODS OF STREET CLEANING 



repairs to it are necessary. In American cities the pave- 

 ment is being constantly broken through. It is torn up 

 with little or no regard to the integrity and smoothness 

 of the surface and with the sole idea of quickly reach- 

 ing the pipes and conduits beneath. This integrity of 

 surface has much to do with the cost of street cleaning. 



In great cities the structures which lie beneath the 

 surface of the pavements are numerous and complicated 

 in the extreme. They include pipes for water, sewage, 

 gas, steam, pneumatic mail delivery, and conduits for 

 telegraph, telephone, electric light and power purposes, not 

 to mention subways for the transportation of passengers. 

 Often there is no plan or map of thes3 subterranean 

 structures and much digging is required to locate them. 



As far as practicable, all underground structures should 

 be placed in conduits which can be reached by man- 

 holes. When a street is paved or repaired or the pave- 

 ment extensively opened for any purpose, this fact 

 should be advertised in advance and all necessary repairs 

 and alterations should then be made to the underground 

 structures so that the replaced pavement need not soon 

 again be disturbed. 



As the city grows the height of buildings becomes 

 greater and greater, making the streets relatively nar- 

 rower. This interferes with free access of air and 

 sunlight; it leads to the overcrowding of the sidewalks 

 and carriageways. Mile after mile this monotonous 

 construction continues. 



The city uses its streets in a very different way than 

 uses of does the village. The streets of the city are 

 city streets no ^. on jy ar t er i e s of travel, they are at once 

 places of amusement, health resorts, and business places 

 for the people. Here persons of all ages and all tastes 



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