Trusses
Truss calculation are important when buiding a truss becuase you need to know all the forces that will be applied at each joints. Without this calculation we wouldn't know how to build a truss that sustains a certain amount of weight. Event thougth these calculation don't acount for natrual foces like gravity it is still needed to help you build a good a sturdy truss.
Steps
- You need to make shure you are organized and have a lot of room for your calculation because this calculation take up a lot of space
- First you will need to staticly determine the truss= 2J = M + R . For this one it would be 2 (4) = 5 + 3= 2 * 4 = 8 and 5 + 3 = 8 . 8 = 8 with M being members and J representing joints.
- If the are equal to eachother then they are stactily determined. after that you will start with the sum of the moments and doing all the calculations
Calculations
-320 -320 = Ray (6 ft) 53.3 = Ray
0 = -267 + Rdy Rdy = 26.7
0 = Fab + -26.3 26.3 = Fab
/ .89 / .89 -59.9 = Rac Anwers: Ray = 53.3 lb Rdy = 26.7 lb Rac = -59.9 lb Rab = 26.3 lb |