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joist
joist
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.
A drop beam is a structural beam that is placed underneath the structrual member or members it is supporting, as opposed to a flush beam, which is placed in-line with the members it is supporting. For a visual explanation, see the image here: http://www.benedictdesign.com/floorframing.jpg
I would use rebar in any concrete beam supporting a brick wall.
fog light and/or low beam
Anything which is supporting to a beam or column to eliminate the buckling failure due to high deflection and unbalanced eccentric load
About 5metres(16') but would have to be stress graded timber.
A downstand beam is a raft that consists of a supporting stand that takes the load of column or walls. The downstand beams is spread to the monolithically cast slab.
The Triple Beam Balance is a typical mechanical balance. It has a beam which is supported by a fulcrum. On one side is a pan on which the object is placed. On the other side, the beam is split into three parallel beams , each supporting one weight.
1) What do you mean by sail extender? The rope to hoist (raise) the sail is called the halyard. The vertical beam supporting the sail is the mast, the horizontal beam supporting the sail is the boom.2) It's called a SPRIT - see: Dictionary.com
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'.