One and Two family houses Versus Multifamily houses' minimum live loading in a multistory building 2

[NewbieInSE]

Hello,
The query is based on the minimum live load table of ASCE or IBC.
I have a confusion regarding the One and Two-family houses Versus Multifamily houses' minimum live loading in a multistory building.
In the case of a 5 storied building containing two units of single families in each floor, am I going to use live loads as specified for "One and Two-family houses" or for "Hotels and multifamily houses"?

 

[phamENG]

One important distinction - they're 'dwellings' not 'houses.' An even better way of putting it is 'dwelling unit.' So does your building have more than 2 'dwelling units' in it?

 

[NewbieInSE]

Please see the drawing file attached.
As I understand, it is two dwelling units per floor. So for the five-storied building it has 10 dwelling units.

 

[kipfoot]

This seems like a trick question, but here's my answer: Hotels and Multifamily Dwellings.

 

[phamENG]

So for the five-storied building it has 10 dwelling units.

Great. So as kipfoot already gave away, 10 is greater than 2, so One and Two-Family dwellings would not be an appropriate code section to use.

 

[NewbieInSE]

Thanks. Then it is "Hotel and Multifamily Dwellings".

The loads are so far similar in both the cases except for the item "Public rooms and corridors serving them". Would you consider "Living room and Dining room" as Public room and consider 100 psf load there? Or would you say that in a multifamily building there might be a community gathering room, mosque, church etc. which are considered public rooms and high load only applies there?

 

[Lomarandil]

Public rooms would be public to all residents (or even those not living in the building). Exactly like your community room, mosque, etc.

Assuming the living and dining rooms are inside the dwelling unit, I would not call those public rooms. 40psf would be enough.

----
just call me Lo.

 

[NewbieInSE]

Thank you

 

[ChorasDen]

Double check with your jurisdiction regarding the required loading for hallways/corridors that service living units. While the snippet above indicates that 40 psf would be sufficient, I often see corridors designed to 100 psf live load, as they are often also considered evacuation routes in the event of an emergency.

 

[NewbieInSE]

Yeah corridors are designed for 100 psf. But I think these are the ones which are accessible to all the residents of the building like foyer and long corridor in front of multifamily flats/units.

But the internal corridors between rooms inside a family flat/unit may be designed for 40 psf, I guess.