Manhole covers in Seville are typically made of metal

 

or concrete

 

and are circular

 

, square

 

, or rectangular

 

in shape.

Circular covers intended for sidewalks are sometimes set within a square frame, making it much easier to pave the surrounding area.

 

No colored or gilded manhole covers were found in Seville.

Covers intended for the City of Seville usually bear the inscription "NO8DO," which has appeared on the city’s flag since 1985.

Many covers are marked for EMASESA, Seville’s municipal water and sewer company.

 

Others belong to organizations such as the telecommunications company Telefónica

 

and additional utility providers.

A large proportion of the covers indicate their purpose: SANEAMIENTO ("Sanitation") on sewer covers

 

, AGUA ("Water") on water covers

 

, and on telecommunications covers, usually only the logo of the telecommunications provider.

 

The manhole covers found in Seville are generally not unique to the city and usually follow the standard designs used by their respective manufacturers.

Manufacturers[/כת2

Many covers were manufactured by the French company Norinco

 

, while others were produced by the Spanish manufacturer Cofunco

 

and by additional Spanish manufacturers.

[כת2Standards

The most common standards are the European EN 124 standard

 

and its various load classes (B125-D400)

 

.

Also commonly found are the Spanish UNE standard

 

, the Spanish AENOR certification

 

, and even the French NF standard.