Problem 1: A structure is made of a horizontal beam AF and a weightless inclined bar CD with pinned connections at A, C and D. The structure is designed to lift a crane that carries 10 kN. The tapered beam is 25 mm thick and its height varies linearly between 150 mm at end A to 250 mm at end F. Member AF's specific weight is 80 kN/m³. 3m Determine the required diameter for the pin at connection A if the allowable shear stress capacity is 350 MPa. What is the required thickness of each of the two plates at connection A if the allowable bearing stress capacity is Ob= 200 MPa. A E B -2m-2m-2m- F 1 m 10 kN Connection A

Problem 1: A structure is made of a horizontal beam AF and a weightless inclined bar CD with pinned connections at A, C and D. The structure is designed to lift a crane that carries 10 kN. The tapered beam is 25 mm thick and its height varies linearly between 150 mm at end A to 250 mm at end F. Member AF's specific weight is 80 kN/m³. 3m Determine the required diameter for the pin at connection A if the allowable shear stress capacity is 350 MPa. What is the required thickness of each of the two plates at connection A if the allowable bearing stress capacity is Ob= 200 MPa. A E B -2m-2m-2m- F 1 m 10 kN Connection A

Steel Design (Activate Learning with these NEW titles from Engineering!)

6th Edition

ISBN:9781337094740

Author:Segui, William T.

Publisher:Segui, William T.

Chapter10: Plate Girders

Section: Chapter Questions

Problem 10.7.9P

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Measuring site work, Excavation and Piling

Bid drawings typically include very little material about the precise requirements of site work operations, measuring site work and excavation work differs from measuring most other works on a construction project. The actual site work conditions are not provided and also the dimensions of the excavations are not known during the pre-construction phase. The precise measurement of the excavation and backfill of the earth material and topsoil is important for a contractor to decide upon the total cost required for the process. All the works should be carried out under OSHA (Occupational Safety and Health Administration) standards to ensure the safety of the workers.

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Problem 1:
A structure is made of a horizontal beam AF and a weightless inclined bar CD with pinned
connections at A, C and D. The structure is designed to lift a crane that carries 10 kN. The
tapered beam is 25 mm thick and its height varies linearly between 150 mm at end A to
250 mm at end F. Member AF's specific weight is 80 kN/m³.
3m
Determine the required diameter for the pin at connection A if the allowable shear
stress capacity is 350 MPa.
What is the required thickness of each of the two plates at connection A if the
allowable bearing stress capacity is Ob= 200 MPa.
A
E
B
-2m-2m-2m-
F
1 m
10 kN
Connection A

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Step 1: State the given data

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Step 2: Determine the self weight of the beam and it's location

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Step 3: Determine the resultant force at connection A

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Step 4: a. Determine the required diameter of the pin

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Step 5: b. Determine the required thickness of the each plates

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