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Consider the crane lifting the load shown. If the maximum crane loading on member A is 40, lbs 18, kg as a bending limit, calculate the heaviest load that can be lifted. Just set up the two equations for load parallel to the boom in terms of B and solve.
Note, that as the boom passes 45 degrees, the equations will shift from sin to cos and vice versa. Check me but it looks like the top cable is B Cos 10 and lower cable is B Sin You remember sin and cosine, right?.
EDIT: You had the choice of setting up your coordinates system any way you want. In a complicated problem its often useful to render all forces in a normal Y up, X to the right system.
In a simple load diagram, placing 0,0 at the top of the boom and running X down the boom works fine. For the load diagrams, imagine right triangles along the boom with their hypotenuse along the cable. Then, solve for the other two sides using whichever angles and forces you know, The winch cable comes off at 10 degrees. The load cable comes off at 45 degrees. In both cases, the leg of the triangle along the boom is B Cos theta. If you know other angles or forces, just solve accordingly.
Answer Save. Mark P Lv 7. Your link doesn't work. Still have questions? Get your answers by asking now.Problem cb In the structure shown in Fig. Members AE and DE are cables. For this structure, determine the reaction at B.
Problem cb For the cabled structure in Fig. For this structure, determine the reaction at A and the tension in the cable. Problem mm For the structure shown in Fig. For this structure, determine the reaction at A, the tension on cable ED, and the force in member DC. A load of 12, lb is acting at the midpoint of member AB, and a load of lb is applied at point C. Problem The uniform rod in Fig. P weighs lb and has its center of gravity at G.
Determine the tension in the cable and the reactions at the smooth surfaces at A and B. The loads remain vertical. Problem A boom AB is supported in a horizontal position by a hinge A and a cable which runs from C over a small pulley at D as shown in Fig. Compute the tension T in the cable and the horizontal and vertical components of the reaction at A.
Neglect the size of the pulley at D. Problem The cable and boom shown in Fig. P support a load of lb. Determine the tensile force T in the cable and the compressive for C in the boom.
P is supported by a cable that runs from A to B around the smooth peg at E, a vertical cable at C, and a smooth inclined surface at D. Determine the mass of the heaviest bar that can be supported if the stress in each cable is limited to MPa. Problem Determine the largest weight W that can be supported by two wires shown in Fig.
The stress in either wire is not to exceed 30 ksi. The cross-sectional areas of wires AB and AC are 0.
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Name required. The civil engineering updates.How to Read a Load Chart. Using the Elliott F Boom Truck technical specification sheet as a reference, this article will walk you through the method of reading a load chart.
There are two charts that make up a spec sheet.
The first is the Load Ratings Chartwhich provides the crane capacities at certain boom angles and radius. The second is the Range Diagramwhich provides a snapshot of the boom position when looking at height, radius, and boom angle. The top row represents the boom length. The left column represents the operating radius. The rated crane capacity and boom angle align with a specific boom length and operating radius.
For example, at a ft. The right side of the chart has the same setup, but shows the rated capacities with the optional jibs. The bold line on the chart represents the separation of structural strength and stability. Any capacities above the bold line are limited by the structural strength of the crane.
For thethere are no stability limits, since no capacities are shown below the bold line on the chart.
calculate the heaviest load that can be lifted?
Deductions also have to be figured into the crane capacities. A list of possible deductions is shown at the bottom of the main boom chart and the bottom right of the entire chart. This includes deductions for when the jib is stowed on the boom, for downhaul weights, and for multi-part line blocks. The lower left section of the chart illustrates the parts of line required to reach each capacity.
The crane load line will have to be multi-parted accordingly, depending upon the capacity that needs to be lifted. For example, the load line has a capacity of 9, lb. A lift of 15, lb.How to Calculate the Safe Working Load for Rigging Considering Sling Stress with Nick DePaoli
Range Diagram: The range chart on the second page is an aid for the operator in determining how the boom truck will need to be set up in relation to lifting a particular load. The load radius is shown at the bottom of the diagram. The height above ground is shown on the left side of the diagram.
PROBLEMS ON CABLES
Within the diagram, the boom lengths and boom angles are shown. All of these indicators will assist in positioning the boom truck correctly to lift a load.
The upper right portion of the range diagram shows the outrigger and stabilizer setup for the particular boom truck model. The lower right portion of the range diagram shows the area of operation. For thethe area of operation is degrees to the rear of the truck. If the has an optional front bumper stabilizer, then the area of operation changes to degrees.
Additional notes are also listed on the range diagram. The operator will need to read and understand these notes, prior to operating the crane. Your email address will not be published. How to Read a Load Chart Using the Elliott F Boom Truck technical specification sheet as a reference, this article will walk you through the method of reading a load chart.
Submit a Comment Cancel reply Your email address will not be published. Search for:.Ask your question! Help us make our solutions better Rate this solution on a scale of below We want to correct this solution. Tell us more Hide this section if you want to rate later. For the beam and loading shown, using method of integration, determine the reaction at the roller support.
Show transcribed image text For the beam and loading shown, using method of integration, Questions Courses. For the beam and loading shown, determine the reaction at the roller support. Jul 26 AM. Thedlapu B answered on May 07, Do you need an answer to a question different from the above? Help us make our solutions better. We want to correct this solution. Tell us more. Was the final answer of the question wrong? Were the solution steps not detailed enough?
Was the language and grammar an issue? We appreciate your Feedback Stay Solved :. Didn't find yours? Ask a new question Get plagiarism-free solution within 48 hours. Review Please. Next Previous. Related Questions. For the beam and loading shown, using method of integration, determine the reaction at the roller su. Posted 4 years ago. Posted 3 years ago. A composite Ivan is formed of a 2.
The wall is subjected to an overall temperature difference of sc. Calculate the heat-flow per unit area through the composite Posted 9 days ago. Obtain each column vector of the Jacobian matrix based on its geometric interpretation, However, this robot has some singular points inside the workspace.
Answer the Posted 8 days ago. List the essential properties of molding sand. State the effect of each properties on casting First five question are 16 marks each, Last question 20 marks 1.
A Give classification of manufacturing process. B List the essential properties of molding sand. State the effect of each properties on casting.Before a crane is rented, transported, employed or purchased, the crane chart must be consulted.
Everyone, from the crane operator, to the job supervisors, to even the sales guys have to know how to read a crane chart. It includes data for operation with the outriggers extended, transport weight, and steering dimensions. Knowledge of this information is especially critical if the crane will be working in a confined space, as the lifting capacity varies depending on whether the outriggers are extended. The transport weight below determines the trailer to be used, how to load the crane on the trailer, the route to take, and what permits are required to get it to the jobsite.
Along the top axis, the first number is the gross vehicle weight. In the other two columns, the arrows indicate the weight load for each axle depending on what additional accessories are loaded. In the legend at the top of the chart, you can see these ratings apply when using 6. The distance is measured from the center pin of the crane to the center of the load.
Once you determine the distance, look on that line for the largest capacity; that will indicate how many feet of boom must be extended. In this case, it is 45 feet. While the Terex RT has a maximum capacity of 45 tons, lifts at any distance or height drops the maximum capacity dramatically.
For that, a range diagram is usually included in every chart which illustrates how much boom length is needed to pick up and lift a load both at a distance and at height. Consulting the range diagram, 69 feet of boom is required to make the lift. Lifts with jib lengths of 32 and 49 feet in addition to boom extension of feet are illustrated.
With higher angles of lift, the maximum load capacity decreases. With a luffing jib, the angle can be automatically adjusted from the operators cab. With a fixed jib, of course, the angle is fixed.
Here, the chart illustrates the total weight able to be picked up at a degree angle while stationary on wheels, the total weight being able to be supported both while slowly rolling with the load at a zero degree angle creepand the total weight able to be supported while moving at 2. The column to the left again indicates the radius of the lift, the one to the far right, the maximum boom length each weight can be carried at.In the mechanism shown the position of boom AC is controlled by arm BD.
Also, for the same values of u, determine the reaction at A. Ask your question! Help us make our solutions better Rate this solution on a scale of below We want to correct this solution.
Determine the resultant internal loadings in the crane
Tell us more Hide this section if you want to rate later. In the mechanism shown, the position of boom AC is controlled byarm BD. For the loading shown, calculate and plot the reaction at Aand the couple M required to hold the system inequilibrium as A couple M is applied to crank AB in order to maintain the equilibrium of the engine system shown when a force P is applied to the piston.
The position of the L-shaped rod shown is controlled by a cable attached at B. Questions Courses. For the loading shown, May 19 AM. Karan P answered on March 27, Do you need an answer to a question different from the above? Help us make our solutions better.
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Rigid Body 3D
Assuming that the bearing at B does not exert any axial thrust, determine the tension in the cable and the reactions at A and B. The pipe is supported by the ball-and-socket joints A and D, which are fastened, respectively, to the floor and to a vertical wall, and by a cable attached at the midpoint E of the portion BC of the pipe and at a point G on the wall.
Determine a where G should be located if the tension in the cable is to be minimum, b the corresponding minimum value of the tension. The 6-m pole ABC is acted upon by a N force as shown. Draw the free-body diagram needed to determine the tension in each cable and the reaction at A.
The sheave at A has a radius of 2. Knowing that the system rotates at a constant rate, draw the free-body diagram needed to determine the tension T and the reactions at B and D. Assume that the bearing at D does not exert any axial thrust and neglect the weights of the sheaves and axle. A 4 3 8-ft sheet of plywood weighing 34 lb has been temporarily placed among three pipe supports. The lower edge of the sheet rests on small collars at A and B and its upper edge leans against pipe C.
Neglecting friction on all surfaces, draw the free-body diagram needed to determine the reactions at A, B, and C.
An opening in a floor is covered by a 1 3 1. The sheet is hinged at A and B and is maintained in a position slightly above the floor by a small block C. Determine the vertical component of the reaction a at A, b at B, c at C. For the shown, determine the tension in cable and the reaction at C.