Structural Steel Fire Protection

[Adrock]

I'm in the process of encasing structural steels within my basement with fire board. How do I continue the fire protection where the steel has a timber bolted into it? Hopefully the picture below helps to illustrate what I'm asking.

 

 

I'm thinking infill those sections between the joists with pink board and then more pink board to the end of the joists hanging below the steel. Thoughts?

[Nickfromwales]

9 minutes ago, Adrock said:

I'm in the process of encasing structural steels within my basement with fire board. How do I continue the fire protection where the steel has a timber bolted into it? Hopefully the picture below helps to illustrate what I'm asking.

 

 

I'm thinking infill those sections between the joists with pink board and then more pink board to the end of the joists hanging below the steel. Thoughts?

Who has asked for this? Usually the standard plasterboard with a skim plaster coat attains 30 mins, without needing to then dress the steels behind it. 
 

Have you been asked for 60 min as your multiple stories? Can be easily achieved with 12.5mm FR plasterboard, possibly 2 layers if BCO requests it, and just accept a slightly lower ceiling.

 

Much easier and quicker (and better). 

[Adrock]

7 minutes ago, Nickfromwales said:

Who has asked for this? Usually the standard plasterboard with a skim plaster coat attains 30 mins, without needing to then dress the steels behind it. 
 

Have you been asked for 60 min as your multiple stories? Can be easily achieved with 12.5mm FR plasterboard, possibly 2 layers if BCO requests it, and just accept a slightly lower ceiling.

 

Much easier and quicker (and better). 

 

BCO have asked for it, including the basement the house will end up being four storey by the end of the project.

[Nickfromwales]

1 minute ago, Adrock said:

 

BCO have asked for it, including the basement the house will end up being four storey by the end of the project.

Can you go back to them and ask to do 2 layers of FR PB + skim instead? You can even offer to use 2x 15mm to really give the BCO’s goolies a good rub. 

[saveasteading]

I like 2 layers of grey in preference to one of pink. The ends can lap, and cutting-in gets tidier. 

If they think it has to be pink, then use pink as the outer layer.