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It depends on the size of the shingle!
I Need the size of a lintle 3.8m long in a bungalow with an all hipped roof.
250 mm x 400mm
You will have to have an engineer spec that beam for you. You will save yourself time and money by cutting the span with a column.
18m2
What size steel I beam do I need to span a 32 feet garage with a floored storage above and no posts
Roof Line 30 Foot Span
1'*1'
That is not a simple anwer. It depends on the roof design and how many, and where the load points are, and the material of the beam(wood, metal, composite). See a structural engineer.
That really depends upon the load you need to carry and the material that the beam is made of.
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
Answering my own question....but I am seeking advice... I have a garage with 12' walls. It is 16' wide and I am planning to put a storage loft in the rear third of the space. It will be 8' from the ceiling so it will be only for storage, but perhaps also a doghouse for me.I have been told that I need a large beam (a 12" gluelam), by one person, and another said that anything bigger than a 2*10 sistered with a piece of plywood is overkill.What should I do?
too many variables here, mostly the size of the roof above it (steepness, weight of shingles, tile or slate? etc. You're best to overengineer it. A double thickness (3.5" X 12" or 16" wide) glulam will support a reasonably large roof above it, otherwise a simple double 2x12 would work for a 3/12 -6/12 pitch roof with light grade 30 year shingles.
It depends on the size of the shingle!
You must also take in consideration the width of the building. For instance a 12'x16' building you would use 2x6 rafters and a 2x8 beam with collar ties every 4'.
It depends on the roof load and the actual clear span. Off hand, I would guess htat you haven't given this much thought. A rule of thumb for a steel truss is one inch per foot of span or in your case 40 inches. If you want to use a steel I-beam, you can get that from a good municipal library from the steel beam institute, but you are going to need a crane to place it. Dieter in Cincinnati
Twice the size of a single garage.