s, which require the placement of microwave dishes on towers, with subsequent line of sight and adjacent site(s) depending on the network architecture if the sites are Roll-Out Network Project Management daisy-chained or linked in a star configuration. If a site is totally isolated from other sites then it is usually avoided, unless the site is mandatory from an RF point of view or some hill obstruction prevents any line of sight. In such cases repeaters are used for MW connectivity. More information on the LOS is given in Chapter 3. Structural Engineering Suitability The tallest buildings are short-listed during site surveys, effectively reducing the height of the tower and proving more cost-effective. Another issue is that of building strength - whether it can withstand the gross weight of the equipment, room, tower, antennas and all the ancillaries and whether it has a carpet area of about 10 m² for setting up an equipment room and has space for the tower and running of the RF and power cables. Lastly, the building construction is checked to see that it is strong enough not to crumble under the weight of the equipment and tower load if there is a low level earthquake or gusty weather. Additionally, the overall wall loading of the building as well as the adjacent attached buildings are checked in order to ensure that the neighbouring buildings are not heavily dependent on the wall strength of the chosen building. This can cause a long-term damaging effect on the building once the equipment loads also add to the total stress on the walls. Finally, it is a trade-off between height and structural strength. Feasibility of Site Acquisition and Material Handling After all the technical queries comes the basic question: 'Is the site feasible?' Archaeological buildings, institutional buildings and hospitals should be avoided. Private buildings are preferred as the owner can be taken into confidence and cordial relations can be developed for smooth continuation. Permission is taken from the residing community as they mi