extension query

rabialiones

hi, we have had plans and building regs approval and now looking for a builder.
however, architect is pushing us to get calculations for rsj and also energy perf. cert. done
is this necessary before we start work
any advice appreciated.
I thought we had to find a builder first to start the work and he would ask us for calculations when he needs them as I think he will be building the shell first

Furts

You are paying an Architect to give you professional advice. You would be wise to take this advice.

It sounds like you do not have Buildings Regulations so get your side of the equation dealt with before getting a builder. If the builder does not know the details of a structural steel how do you expect them to price the work, buy the steel and then install it? Builders are not crystal ball gazers.

DRP

As Furts said.

We hummed and ha'd and delayed getting the structural calcs done straight away. We soon regretted this as 1) the builder had to approximate the cost, and 2) the builder was able to start really quickly so we ended up having to pay the SE extra to get his 'priority' turnaround on the calculations.

False economy!

Doozergirl

I'm not sure why you need an EPC though??

phil24_7

Indeed...why the EPC? I agree with everyone here, get the structural drawings and calculations done pronto. Good structural engineers can also design certain quirks in or out of the build. Mine designed some steel uprights for an RSJ removing the need for piers in a very long wall.

DRP

Doozergirl wrote: »

I'm not sure why you need an EPC though??

perhaps they mean the u-value calcs?

phil24_7

Surely the architect will do this if they are specifying the materials?

Doozergirl

DRP wrote: »

perhaps they mean the u-value calcs?

If you need stuff like that, it's on the Kingspan website for free.

rabialiones

thanks for all replies, ok , so I need structural calcs for builder to price the work for rsj .
but I thought I would need an epc after work has been carried out, don't know what need is before this
we have paid for building regs and letter has come thru saying we have to inform them 2 days prior to starting work

phil24_7

What reason has been given for an EPC? Are you receiving a grant for any energy saving works? If so an EPC from the company doing the work is usually what happens. Otherwise I have no idea why you would need an EPC!

Furts

phil24_7 wrote: »

What reason has been given for an EPC? Are you receiving a grant for any energy saving works? If so an EPC from the company doing the work is usually what happens. Otherwise I have no idea why you would need an EPC!

I am wondering if there is something odd with the design? Perhaps the U Values, or details, are suspect and the response is heading towards upgrading the existing works to trade off, or compensate.

We can speculate, but as a bottom line there appears to a clause attached regarding energy. OP would be wise to get matters clarified before engaging the builder.