At room temperature (24°C) a 0.5 mm gap exists between the ends of the rods shown in the figure. At a later time when the temperature has reached 120°C, determine (a) the normal stress in Aluminium rod (b) the change in length of the Aluminium rod. K A AC 0.45 m Aluminium AI αAl = = 1800 mm² EAC = 73 GPa 0.5 mm 加比 = 23.2x10-6/°C 0.35 m ab Br Brass Ab = 1500 mm² Eb = 105 GPa ///////// = 21.6×106/°C

Q: y = kx³ I 30 mm Fig. P5.15 30 mm 150 mm X

A: Locate the centroid of the plane area shown.

Q: what is shear force at x= 8ft

A: Given Load 100 lb/ft and 300 lbSpan 12 ftReaction at A and D are 246.667 and 653.333 lbTo find out…

Q: 5 Find the centroid of the following structure. (20 2.5" dia hole- centered 4" 5" 3" 4" 6" 3"

A:

Q: The horizontal x-axis is drawn through the cent two component areas A1 and A2. Determine the f me…

A:

Q: What is the rod reading at the arrow? 4 3 7 3 =6

A: Rod reading:- The number on the rod is parallel to the die-observing device's height. The elevation…

Q: Determine the location of the centroid of the area.  Segments A,B, and C. I can't figure how to find…

A: Centroid will be at ( 2.5 , 4 ) from lower left cornerExplanation:

Q: Problem 4: The two bars can deform elastically. They are pinned at point B. The length of AB is 400…

A: Given  AB= 400 mm  BC= 250mm  E= 250 Gpa  Alpha = 30 °

Bars

In civil engineering, bars refer to steel reinforcement bars or rebars. These are structural members primarily used for reinforcement purposes in masonry works. A bar is characterized by its cross-sectional area, which is negligible compared to its length. Bars are usually manufactured by steel which is uniform throughout the length, or by meshing multiple steel wires. Other materials of the bar include carbon steel, glass fiber, carbon fiber, and basalt fiber. The reinforcing bars are coated with epoxy resins and other materials to enhance some of their properties including corrosion resistance.