How to choose switches for a network of video cameras?

Question

CCTV

Hello everyone, a question for the designers of video surveillance systems. I am writing a diploma on this topic and the question arose, how to calculate how much the switch can give out energy for cameras (PoE)?
For example, I have 3 floors: 1st
floor of Cameras
31
2nd floor of Cameras
12

3rd floor of Cameras
33 that, let's say, a 24-port switch can give out n-amount of energy and it's not a fact that I can plug my cameras into all 24 ports.

Answer 1

Everything is taken from the official documentation.
- AXIS M3024-LVE video camera consumes a maximum of
6.3W https://www.axis.com/files/datasheet/ds_m3024lve_1...
- AXIS T8516 PoE+ Switch has a maximum power budget of 240W and 16 PoE ports
https ://www.axis.com/files/datasheet/ds_t8516_poe_...
- D-Link DES-1018P switch has a maximum power budget of 80W and 8 ports with PoE support
www.dlink.ru/ru/products/1/ 1969_b.html

Answer 2

If the camera suddenly does not indicate consumption, you can navigate according to the
802.3af standard - up to 15.4 W
802.3at - up to 30W