The covers in Vienna are generally made of metal

 

, concrete

 

, or plastic (composite materials)

 

, and their shapes are square

 

, rectangular

 

, round

 

, or elliptical

 

.
In addition, there are some quite distinctive shapes: octagonal

 

and also hexagonal

 

.
There is a small number of round covers intended for sidewalks that are surrounded by a square frame, which greatly facilitates the paving work around them

 

.

No colored covers were found in Vienna, nor gilded ones (except for those belonging to the “Stumbling Stones” project (Stolpersteine), which are not exactly covers)

 

.
The city emblem does not appear on the covers.

Some of the covers are intended for Wien Energie

 

, others for the water utility Wiener Wasser

 

, for various telecommunications companies

 

, and so on.

For a significant portion of the covers, their purpose cannot be determined. Among the others, there are drainage covers (characterized by drainage slots)

 

, water covers marked with the letter W

 

, and on gas/heating covers the word Fernwärme (district heating) frequently appears

 

, and so on.

Walk of Fame
Not without reason is Vienna known as the “Capital of Music”. The city has a trail launched in 2001 and dedicated to composers, conductors, musicians, and opera singers, all from the field of classical music. On the plaques set into the ground, within a star, appear the name of the composer (or artist), a relief portrait, their signature, and their years of life

 

.

Manufacturers
Many covers were made by the Austrian manufacturer Wallner Neubert

 

, or by the German MeierGuss

 

. In addition, covers made by the French PAm

 

, the German ACO

 

, and many other manufacturers can also be found.

Standards
The most common standards are the European standard EN124

 

and the various load classes (A15 - F900)

 

. In addition, many covers bear the Austrian B5110 certification mark

 

, the Austrian ÖNORM

 

, and the ÜA-Marking, which is also an Austrian standard

 

. Additional standards were found, but in smaller quantities.