atrium (Noun) A central room or space in ancient Roman homes, open to the sky in the middle; a similar space in other buildings. atrium (Noun) A square hall lit by daylight from above, into which rooms open at one or more levels. atrium (Noun) Any enclosed body cavity or chamber. atrium (Noun) An upper chamber of the heart that receives blood from the veins and forces it into a ventricle. In higher vertebrates, the right atrium receives blood from the superior vena cava and inferior vena cava, and the left atrium receives blood from the left and right pulmonary veins. atrium (Noun)
The basic procedure of moving a grand piano one is to put its flat side of the piano on a skid board. To do this, the front leg at the bass end of the piano must be removed first. Then the bass corner of the piano must be lowered onto the skid board. There are two ways to get to this point. Some people remove the lyre and the leg and then lower that corner and down the skid board. Others leave the lyre in place and use it as a pivot point to lower the bass corner onto the skid board.
The load strength of the piano hinge is determined by a couple different things. They are first determined by the number of knuckles in the hinge and second, it is determined by the number of fasteners. The load is actually spread right across the length of the piano hinge. A few examples are to follow. Standard 24-Inch Hinge. This hinge will give you about 60 pounds of maximum weight. So, the spread of weight on this hinge is 2.5 pounds per 1-inch of the hinge. Plastic Piano Hinge. A 2-inch plastic piano hinge can typically handle up to 100 pounds of load per linear inch of the hinge. The plastic piano hinge is an economical alternative to a piano hinge constructed of steel or other metal material. Plated Finished Hinge. Some smaller hinges that are anywhere from 1-inch to 1.5-inches in width are great for lighter load projects.