Garage door steel calculation quote -- 2

Job ID: 33085564

Budget: £250 – £750 GBP

I need an engineer to calculate for me a bit of steel to span an opening of 5150mm with bearers of up to 340mm but preferably 200mm to support a single story garage hipped roof please. I have provided a picture of the garage in question.
Address is 19 Stan Peterson close Norwich NR1 4QJ United Kingdom

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