True or False 1. Rotarizing is the straightening of a crooked member by passing

Question

True or False 1. Rotarizing is the straightening of a crooked member by passing it through series of rollers at room temperature. 2. S-shapes are stiffer than W-shapes but they have connection disadvantage in their varying depth. 3. Cold-Formed Light-Gage steel shapes are mostly used in seismic regions of USA. 4. For angle of einch 1eg the workable gages 3inch, 2 inch, and nch. 5. The inner and outer flange surfaces of American Standard Beam shapes are parallel. 6. Semi-rigid connection is similar to another name for rigid-jointed connection. 7. In computing net area for tension and shear, the width of a bolt shall be taken as 1/4 in. greater than the nominal dimension of the hole.

Explanation / Answer

1-false, Since rotary straightening is the process of cold bending the member about its weaker axis, between sets of rollers.

2- false, Since W shape is more stiffer and posses more strength than S shape and therefore are being widely used.

3- True, L members i.e angle section are used in seismic areas since vertical and horizontal movement allowing connections are used to accommodate both vertical deflection and horizontal drift in structure.

4-False, As workable gages for 6' angle leg are 3.5, 2.25 and 2.5

5-False, As inner surface are sloped at 17 degree connected by web

6-False, As in rigid joint flexibility is allowed upto some extent but no partial strength is adviced, partial strength connections are considered to be within semi-rigid joint.

7-False, As width of bolt diameter shall be 1/16 in. greater than the nominal dimension of hole

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