SURVEYING

A closed -traverse is  conducted in anticlockwise direction with Five stations A, B, C, D, and E in the form of a regular Pentagon. If the F.B Of AB is  45°00′, find the F. B’s of Other sides

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A closed -traverse is  conducted in anticlockwise direction with Five stations A, B, C, D, and E in the form of a regular Pentagon. If the F.B Of AB is  45°00′, find the F. B’s of Other sidesA closed -traverse is  conducted in anticlockwise direction with Five stations A, B, C, D, and E in … Read more

The following interior angles were measured in a compass closed traverse. The bearing of the line AB was measured 150° 15′ with prismatic compass. Calculate the bearings of all the other lines. If ∠A =209°45′, ∠B= 50°15′,∠C=95°15′,∠D= 102 °15′ and ∠E=82°30′

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The following interior angles were measured in a compass closed traverse. The bearing of the line AB was measured 150° 15′ with prismatic compass. Calculate the bearings of all the other lines. If ∠A =209°45′, ∠B= 50°15′,∠C=95°15′,∠D= 102 °15′ and ∠E=82°30′ SOLUTION : First check for interior angles of a closed traverse ∠ A+∠B+∠C +∠D … Read more

A closed compass traverse PQRS is run with prismatic compass in a clockwise direction

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A closed compass traverse PQRS is run with prismatic compass in a clockwise direction Line Fore bearing  Back bearing PQ 50° 00′ 230°00′ QR 170° 00′ 350°00′ RS 230°00′ 50°00′ SP 310°00′ 130° 00′ calculate the included angles of the traverse PQRS and apply the Usual check SOLUTION : Line Fore bearing  Back bearing Difference … Read more

The bearing of the line OP, OQ, OR, OS , OT are N30°00’E, N87°45’E, S 25°15′ E, S35°25’W and N 40°35′ W find the included angle ∠POQ,∠QOR,∠ROS,∠SOT, and∠ TOP.

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The bearing of the line OP, OQ, OR, OS , OT are N30°00’E, N87°45’E, S 25°15′ E, S35°25’W and N 40°35′ W find the included angle ∠POQ,∠QOR,∠ROS,∠SOT, and∠ TOP. SOLUTION : ∠ POQ = Bearing of OQ – bearing of OP =87°45′- 30°00′ = 57°45′ ∠ QOR = 180°-(bearing of OQ +bearing of OR) = … Read more

The bearing of lines OA, OB, OC, and OD are 45°15′, 123°30′,216’45’, and 320°00′ respectively. and the included angles∠AOB ,∠BOC,∠COD and ∠DOA

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The bearing of lines OA, OB, OC, and OD are 45°15′, 123°30′,216’45’, and 320°00′ respectively. and the included angles∠AOB ,∠BOC,∠COD and ∠DOA solution: ∠AOB= Bearing OB – bearing OA = 123°30′ – 45°15′ = 78°15′ ∠ BOC = Bearing of OC – Bearing of OB = 216°45′ – 123°30′ = 93°15′ ∠ COD = Bearing … Read more

The following table gives the fore and back bearings of sides of a closed compass traverse. Test and correct the values of the bearings for local attraction 

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The following table gives the fore and back bearings of sides of a closed compass traverse. Test and correct the values of the bearings for local attraction  Line fore bearing Back bearing AB N 55°00′ E S 54°00′ W BC S 67° 30′ E N 66°00′ W CD S 25°00′ W N25°00’E DE S77°00′ W … Read more

The bearings observed in a traverse survey, at a place where local attraction was suspected are given below. At what stations do you suspect local attraction? Find the corrected bearings of the lines.

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The bearings observed in a traverse survey, at a place where local attraction was suspected are given below. At what stations do you suspect local attraction? Find the corrected bearings of the lines. Line  Fore bearing Back bearing PQ 124° 30′ 304° 30′ QR 68° 15′ 246° 00′ RS 310°30′ 135° 15′ SP 200° 15′  … Read more

In an old map a survey line was drawn with a magnetic bearing of 200° 00′, when the declination was 1° 36′ E. Compute the Magnetic bearing of the line at the time, when the declination is 0° 56′ W.

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Q. In an old map a survey line was drawn with a magnetic bearing of 200° 00′, when the declination was 1° 36′ E. Compute the Magnetic bearing of the line at the time, when the declination is 0° 56′ W. solution : True bearing of the line= magnetic bearing of th line+ Declination (East) … Read more

Find the magnetic bearing of lines From the given True bearing and delicination 

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Find the magnetic bearing of lines From the given True bearing and delicination  (a) Bearing of a line = 72°36′ , Delicination = 1° 44′ W  (b) Bearing of a line = 259°12′, Declination = 0°56’E  Solutions : (a) Bearing of a line = 72°36′ , Delicination = 1° 44′ W  magnetic bearing of a … Read more