Block and beam alternatives

[Deleted member 281264]

Because of an oak tree being removed 7m from extension engineer is recommending a b&b floor.

I hear they can be very bouncy and would like something sturdy. Anyone used anything alternative?

 

[freddiemercurystwin]

What are the spans? Using a deeper concrete beam or changing the beam centre's can eliminate any bounce but £££s.

 

[Deleted member 281264]

the area will be 4m x 8.3m

 

[noseall]

the area will be 4m x 8.3m

Split the 8.3 into 3 spans i.e. a pair of sleeper (honeycomb) walls?
It will mean the floor beams are way more manageable and negate the need for a crane.

 

[Deleted member 281264]

thanks thats what I was thinking

still deciding whether or not to go with piles, what are usual methods for building the floor above pile and ring beam?

 

[^woody^]

Split the 8.3 into 3 spans i.e. a pair of sleeper (honeycomb) walls?

But these wall's foundations will need to be as deep as the main walls or the SE will be even more worried.

I don't know why he thinks it will affect the floor.

 

[noseall]

But these wall's foundations will need to be as deep as the main walls

I have weighed up the hassle of waiting time, phone time etc of hiring machinery or cranes etc v's a couple of extra trenches and a solid feeling floor many times. I'm of the conclusion that it can be easier to dig an extra couple of trenches especially in a busy street or a tight cul de sac.

 

[^woody^]

I have weighed up the hassle of waiting time, phone time etc of hiring machinery or cranes etc v's a couple of extra trenches and a solid feeling floor many times. I'm of the conclusion that it can be easier to dig an extra couple of trenches especially in a busy street or a tight cul de sac.

That's right normally.

But in this case it seem like the SE is concerned about the ground heave so the foundations will be super deep or piled, so any walls in your cunning plan will need to be the same

 

[freddiemercurystwin]

Split the 8.3 into 3 spans i.e. a pair of sleeper (honeycomb) walls?
It will mean the floor beams are way more manageable and negate the need for a crane.

Surely the proposed span of the beams is 4m, not 8.3m.

 

[noseall]

Surely the proposed span of the beams is 4m, not 8.3m.

I was thinking a sensible way to break up the span.