250 mm x 400mm
What size steel I beam do I need to span a 32 feet garage with a floored storage above and no posts
That really depends upon the load you need to carry and the material that the beam is made of.
Roof Line 30 Foot Span
That always depends on what the beam will be carrying. You will need to consult a building contractor to size any beam correctly. IT ALSO DEPEND ON ITS MATERIAL &ALSO HOW MANY STOREY CONSTRUCTION REQUIRED ON THIS
That question cannot be answered without knowing the load on the beam.
1'*1'
W8 x 24
Span/load beam questions really cannot be answered. You will need to have the plans looked at by a engineer. At the very least the lumber yard selling the beam may have an on-staff engineer to have a look at it.
That depends on what it is carrying. . .you definitely need to consult a structural engineer for this information, and having the original set of plans to show him will help. FYI. . .28 feet is a VERY long clear-span for any type of beam.
Use a steel beam.. That would be code.. steel w10x15 (50ksi) I beam.
1 ft by 1.2 ft... verticaly 1.2ft