We will use both shearing and bearing analysis to determine thequantities of rivets needed to fasten BC and BE. We can determine twovalues then choose what will be more safe.■ For Member BC:■ Based on Shearing:VT ==■AvBased on Bearing:PAb70MPa =96000 N.n. (19) ²x n1/4. πn = 4.84 5 rivets96000 N(19mm) (6mm) xn140MPan = 46.015≈ 7 rivetsFor member BC, we must use 7 rivets since we must need a minimumof 7 rivets to resist bearing stress produced by the connection. If weonly use 5 rivets, then the bearing stress will become 168.42 MPa. It willresult to failure since the allowable bearing stress is only 140 Mpa.■ For member BE: (Practice at Home)PacEXAMPLE:5. The figure shows a roof truss and thedetail of the riveted connection atjoint B. Using allowable stresses of t= 70 MPa and ob= 140 MPa, howmany 19-mm diameter rivets arerequired to fasten member BC to thegusset plate? Member BE? What isthe largest average tensile orcompressive stress in BC and BE? SayABC = 864mm2; ABE = 1780mm2.14 mmgussetplate75 x 75 x 13 mm75 x 75 x 6 mm4m96 KN4mE6m200 KN4mG96 KN4m

Given data:τ=70 MPaσb=140MPaABC=864 mm2ABE=1780 mm2for shearing n= 5 rivetsfor bearing n=7 rivets

The figure shows a roof truss and the detail of the riveted connection at joint B. Using allowable stresses of T = 70 MPa and ob= 140 MPa, how many 19-mm diameter rivets are required to fasten member BC to the gusset plate? Member BE? What is the largest average tensile or compressive stress in BC and BE? Say ABC = 864mm2;ABE = 1780mm2.

The figure shows a roof truss and the detail of the riveted connection at joint B. Using allowable stresses of T = 70 MPa and ob= 140 MPa, how many 19-mm diameter rivets are required to fasten member BC to the gusset plate? Member BE? What is the largest average tensile or compressive stress in BC and BE? Say ABC = 864mm2;ABE = 1780mm2.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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