Melting entire city block feat

[Jamesthetaker]

Basically what the title are. Lately i have running into a problem that i don't know how to find the "mass" of entire city block. Can someone give me an advice?

 

[WrongIdea21]

For the Mass we can Use average Building Weight = 55.000 kg, and then since its City block, Average City Block have 100 Buildings so we Multiplied it by 100. Concrete Melting point 1500 °C , concrete specific heat 2100 J (Kg/K),concrete latent heat 189000 J/Kg. Average warm 20°C
calculations
2100J(Kg/K)× 5500000 Kg× (1500°C-20°C) + 189000J/kg×5500000 Kg = 1,742895e13Joules (Small Town)

Edit : This is a Lowball

 

[Blahblah9755]

The 100 there is the number of building numbers they’re allotted, not the average number they have. So it’s the upper limit of what they can have.
Is this for a real world city? If it’s standardized, information on their block size is often available online.

 

[Jamesthetaker]

It's a fictional city so the size should be low-ball.

@WrongIdea21

Thank for your help dude.