Roof Diaphragm Deflection

There will also be slip.

Roof diaphragm deflection.

The deck will have deflection similar to typical beam deflection. A shear wall however is a vertical cantilevered diaphragm. There will also be slip. W 612 plf.

9 0 purlin spacing w14x26 af 2 1 sqin 7 welds per sheet vsc 12. If framing members are spaced more than 24 o c testing indicates further deflection increase of about 20 or 3 times the deflection of a comparable blocked diaphragm. 1 1 2 x 18 ga deck vercor. The thoracic diaphragm or simply the diaphragm ancient greek.

The roof diaphragm will take load from half the wall below and load directly applied to the diaphragm. The term diaphragm is usually applied to roofs and floors. 13 5 l x 16 9 x l 13 5 18 ft 16 9 6 ft 24 14 4 psf. The maximum roof diaphragm moment m equals ww wl x l2 8.

L 42 diaphragm depth. I could use some help on a calculation done for flexible diaphragm deflection. Deflection of unblocked diaphragms is 2 5 times the deflection of blocked diaphragm. The maximum unit shear on the wall diaphragm is also equal to the roof reaction r divided by b.

What is the deflection equation for open front cantilever diaphragms. Applies to both floor and roof diaphragms. Diaphragms and shear walls. Also because the diaphragm beam is deep relative to its span it will also have shear deflection.

Calculate the lateral load on the roof diaphragm. D 56 uniform load. The sdpws three term deflection equations are an algebraic simplification of the four term equations in the ibc. Do shear walls located along diaphragm chord lines affect the diaphragm.

However sdpws provides an option to calculate deflections using other methods such as the four term equations. How is diaphragm flexibility defined for open front cantilever diaphragms vs. A diaphragm is a flat structural unit acting like a deep thin beam. R 1 3 diaphragm span.

Asce 7 16 figure 12 3 1. Sheathing materials and unblocked wood structural panel diaphragms. Partition is a sheet of internal skeletal muscle in humans and other mammals that extends across the bottom of the thoracic cavity the diaphragm separates the thoracic cavity containing the heart and lungs from the abdominal cavity and performs an important function in. To analyze the deflection of diaphragms bending shear and slip must be accounted for.

What is the total diaphragm deflection. What are the available methods of distributing torsional forces into the diaphragm.