bearing stress

Solution to Problem 131 Bearing Stress

Problem 131
Repeat Problem 130 if the rivet diameter is 22 mm and all other data remain unchanged.

Solution to Problem 130 Bearing Stress

130 Trusss Joints

Strength of Materials 4th Edition by Pytel and Singer
Problem 130 page 22

Given:
Allowable shear stress = 70 MPa
Allowable bearing stress = 140 MPa
Diameter of rivets = 19 mm
The truss below:
Figure P-130 and P-131

Required:
Number of rivets to fasten member BC to the gusset plate
Number of rivets to fasten member BE to the gusset plate
Largest average tensile or compressive stress in members BC and BE

Solution to Problem 129 Bearing Stress

129 bolted timbers

Strength of Materials 4th Edition by Pytel and Singer
Problem 129 page 21

Given:
Diameter of bolt = 7/8 inch
Diameter at the root of the thread (bolt) = 0.731 inch
Inside diameter of washer = 9/8 inch
Tensile stress in the nut = 18 ksi
Bearing stress = 800 psi

Required:
Shearing stress in the head of the bolt
Shearing stress in threads of the bolt
Outside diameter of the washer

Solution to Problem 128 Bearing Stress

128 W18 x 86 beam riveted to W24 x 117 girder

Strength of Materials 4th Edition by Pytel and Singer
Problem 128 page 21

Given:
Shape of beam = W18 × 86
Shape of girder = W24 × 117
Shape of angles = 4 × 3-½ × 3/8
Diameter of rivets = 7/8 inch
Allowable shear stress = 15 ksi
Allowable bearing stress = 32 ksi

Required: Allowable load on the connection

Solution to Problem 127 Bearing Stress

Strength of Materials 4th Edition by Pytel and Singer
Problem 127 page 21

Given:
Load P = 14 kips
Maximum shearing stress = 12 ksi
Maximum bearing stress = 20 ksi
The figure below:
Figure 1-11b

Required: Minimum bolt diameter and minimum thickness of each yoke

Solution to Problem 126 Bearing Stress

Strength of Materials 4th Edition by Pytel and Singer
Problem 126 page 21

Given:
Diameter of each rivet = 3/4 inch
Maximum allowable shear stress of rivet = 14 ksi
Maximum allowable bearing stress of plate = 18 ksi
The figure below:
Figure P-126

Required: The maximum safe value of P that can be applied

Solution to Problem 125 Bearing Stress

125 Riveted Connection

Problem 125

In Fig. 1-12, assume that a 20-mm-diameter rivet joins the plates that are each 110 mm wide. The allowable stresses are 120 MPa for bearing in the plate material and 60 MPa for shearing of rivet. Determine (a) the minimum thickness of each plate; and (b) the largest average tensile stress in the plates.

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