1) Use the method of PINS to determine the true magnitude and direction of the forces in all the members of the truss shown below in Fig 3.1.
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- The box wrench shown is used to tighten the bolt at A. If thewrench does not turn when the load is applied to the handle, determinethe torque or moment applied to the bolt and the force of the wrenchon the bolt.Rigid members ABC and DEF are joined bysteel (Es = 180 GPa) links BE and CF. The steellinks consist of rectangular plates with crosssectional dimensions 25x35-mm. Determine:a) the change in length of BE and CFb) the distance between pts. A and D after theloading is applied. Pts. A and D are 240mm apart prior to the applied loading.1) what is the block shear in plate moment connection in steel members. How the allowable moment capacity of the plate moment connection is calculated based on the limit states of Bock shear (2) How the allowable moment capacity of the Plate moment connection is calculated based on the limit states of(i) Beam Flexure rupture (II) Bolt bearing ( iii) weld rupture (iv) Plate copmression yielding pl explain above by giving sutaible exmple for connecting the webs of two I shaped beams by plates
- If the clamping force on the boards is 600 lb, determine the required magnitude of the couple forces that must be applied perpendicular to the lever AB of the clamp at A and B in order to loosen the screw. The single square threaded screw has a mean diameter of 2 in and a lead of 0.25 in. The coefficient of friction is 0.3.The indicated force–couple system is applied to a small shaft at the center of the plate. Replace this system by a single force R and specify the coordinate x of the point on the x-axis through which the line of action of this resultant force passes.the connection consists of a plate connected to another plate by five 25-mm diameter rivets. it carries a load P = 80 kN. Determine the shear stress on the bolt due to the effect of force alone.
- The beam is loaded as shown.What is the reaction at the roller?###--------------------------------------------Determine the maximum tensile force developed in member IJ of the truss shown below due to a dead load of 10 kN/m, 15 kN/m live load and the load induced by the trailer described below. Assume loads are applied directly to the truss and move only to the right.--------------------------------####Compute the resultant force acting on the pin at C. a. 22.5 kN b. 42.0 kN c. 48.1 kN d. 35.5 kN choose letter of the answer
- Channel sections are used as a purlin. The top chords of the truss are sloped at 6H to 1V. Trusses are spaced 4m on centers. Use the properties of the channel section in the picture. Loads: Dead load = 600 Pa Live load = 800 Pa Wind load = 1,300Pa Wind coefficients: Windward = 0.25 Leeward = -0.4 Use Fbx=Fby=248 MPa. Determine the safe spacing of purlins (Use load combination of 0.75(D+L+W)Prove that the lead l must be less than 2πrμs for the jack screw shown to be “self-locking.”In using the bolt cutter shown, a worker applies two forces to the handles. Determine the magnitude of the forces exerted by the cutter on the bolt when P= 360 N. The magnitude of the force exerted by the cutter on the bolt is kN. Note: please show correct working out and final answer!. Thanks