One of the most common shapes, that is mainly used when the cover is located on the road and not on the sidewalk. For the simple reason that it is difficult to fit the curbstones into the shape of the lid (when the sidewalk is covered with tiles).
In many cases where you want to lay a rounded lid in a cobblestone pavement, you may sometimes use a frame that surrounds the circle, as will be described below.
One of the most common shapes, that is mainly used when the cover is located on the sidewalk since it is easy to adjust the sidewalk's tiles to the square shape.
In many cases a round or elliptical cover is surrounded by a square frame as will be described later.
Less common shape due to its less symmetric shape compared to square or circle. In many cases this covers comes with an handle used to lift the lid.
In many cases where an oval cover is put on a sidewalk a rectangle frame is added as will be described later.
As noted, round or oval covers are difficult to place on tiled sidewalks because of the problem of matching the square tiles to the round shape. In order to overcome this problem those covers are inserted inside a square frame.
In the following 2 images there is an example of the same circular lid that appears on its own and with a square frame.
Metal caps are perhaps the most common covers. There are many reason for the popularity of metal: its durability, the easiness of making complicated shapes (circle, oval). Naturally we (the site) prefer this kind of material since you can make spectacular and attractive patterns.
Concrete coverings are simpler and are usually not on the roads but in places designated only for pedestrians, especially in gardens, but also on sidewalks. .
Using holes in the lid, you can lift the lid by using a lifting rod that serves as a lever. In the image below, you can see in detail one of the holes in the lid.
This form of lifting is mainly found in elliptical caps, where a handle is placed in the center of the lid.
Many quadratic or rectangular squares are sometimes composed of two triangles, with the opening form being a single triangle lift (either by lifting holes or by special instruments).
Drain covers and covers for control chambers for vehicle and pedestrian areas
Standard of the Israeli Standards Institution: This standard applies to drain openings and covers to control cells with a free opening of up to 1000 mm, and they are designed for installation in areas where there is movement of pedestrians and / or vehicles. On the ground and on drain openings in the floor, roof or buildings. The purpose of the European Standard is to set definitions, species, materials, design and testing requirements, marking and quality control of lids for drainage openings (From the standard page in the Standards Institution of Israel web site - https://portal.sii.org.il/heb/standardization/teken/?tid=a31e958a-e305-415b-8f80-a1983c0af20c)
|A||Areas used by pedestrians and bicyclists only (eg gardens and parks), a common mark for this category is A15, which indicates a lid capable of carrying a load of 1,500 kg.|
|B||Areas used by pedestrians (sidewalks) or car parking, a common mark for this category is B125 indicating a lid capable of carrying a load of 12.5 tons.|
|C||In pavement, a standard marking for this category is C250, which indicates a lid capable of carrying a 25 ton load.|
|D||Roads and sidewalks, suitable for all types of vehicles, a common mark for this category is D400, indicating a lid capable of carrying a load of 40 tons.|
|E||Places where heavy weight tools such as ports and airports are passed, a common mark for this category is E600, indicating a lid capable of carrying a load of 60 tons.||F||Places where very weighty tools, especially airports, pass through. The common mark for this category is F900, indicating a lid capable of carrying a load of 90 tons.|