That depends on what the beam is supporting above.
Ideally 150mm bearing is the minimum. I have seen as little as 50mm! But any engineer would frown upon this.
it will need a suppot element , depper and stiffer concrete members will act as support
Depends on the dimensions of the beam. length * width * height
With a span of only 8" you can probably use a wood beam, but without a set of plans no one can accurately answer your question.
to help support the building. also to build up the building bigger or taller depending on the size of the beam.
1.50 meter from the support is the max. safe length cantilever beam
beam for sr20det?
It is the length of the main bar provided at the column beam junction or column footing junction to allow for the development of stresses to its design strength.
You need at least 50 square inches of bearing (at least 2x6 wall for a 10" wide beam). You also have to make sure to have proper pad below and enough studs (of filled cells) in the wall to accomodate the load.
it will need a suppot element , depper and stiffer concrete members will act as support
the efffective length of a beam is the length along the beam at which the beam will fail when a load is acting upon it. This effective length is usually near the centre of the beam as that is where the stresses are the greatest. For example a fat chick jumping up and down on the beam would reduce the effective length dramatically as the loads are semi-constant but ginormous.
Deflection of beam depends upon load and length of beam. Larger the beam, larger will be it's selfweight
The length is "stem to stern" or "bow to transom", and the width is "beam to beam".
1.50 meter from the support is the max. safe length cantilever beam
Usually this indicates an error or a misunderstanding. A single beam cannot be of uniform length.
Depends on the area above the ceiling joists. Is it a live load (living space) or dead load (just the joists with maybe an attic above)? Also, the length of the ceiling joists from the last bearing point is a factor. How much weight is bearing on the beam is the critical issue.
A beam that has the same porperties along its entire length.
Depends on the dimensions of the beam. length * width * height