Majmaah University 1432 -1433 second semester
Faculty of Engineering : Dr. M. Azmi simple circular curves
Civil Engineering Program Topographic Surveying sheet (5)
Answer the following with clear and net sketches
1Compute the main elements for the simple circular curve with radios 500m connect two lines the first with whole circular bearing 60̊ 00 00 and with total deflection angle 20̊ 14̍ 21̋ if the computed station at the point (PI) point of intersection of the two lines is (171+ ).
2Its required to design circular curves in the ends of triangular island ABC to facilitate the traffic motion if the length of, SIDE AB=150 m, BC= 200 m, AC=250 m, RA=
20 m , RB = 25 m and RC = 15 m compute the Circumference of the island (curves and tangents)
3 - two straight lines represent an axis of two roads the second deflects from the first by an angle 41 26 20 . they are connected by S.C.C. its degree =2 with arc 30 m if the chainage of the P.C = 1360.4 find the radios (R) , the Tangent (T) ARC (L) , the
External Distance (E). Also arrange table for the setting of the curve including the chord length, partial and total deflection angles also what is the chainage of the main curve points.
4- the following data for S.C.C , total deflection angle = 80 42 30 , (T) = 120 m P.C = chainage = (1227.6 m) compute the following : The radios (R) - the Degree of curvature (D) - the chord length ( C ) – the arc length ( L) – the external distance
( E) – and the mid chord distance ( M ) -
Also arrange table for setting of the curve include the chord length, partial and total deflection angles.
5- If the total deflection angle of S.C.C is 60

20

43

, (E) = 40 m.
Compute the following R, D, C, L, M and T