Bearing resistance of bolts M12 ordinary bolts grade (4.6) with gusset plate 10 mm thickness depends upona.plate thicknessb.all of themc.bolt lengthd.bolt diameter

The bearing resistance of bolts, specifically M12 ordinary bolts grade (4.6) with a gusset plate of 10mm thickness, depends on several factors.

a. Plate thickness: The thickness of the gusset plate can affect the bearing resistance of the bolt. A thicker plate can typically withstand more load without deforming, thus providing greater resistance.

b. All of them: This option suggests that the bearing resistance depends on all the factors listed, which is true. The plate thickness, bolt length, and bolt diameter all play a role in the bearing resistance.

c. Bolt length: The length of the bolt can also affect its bearing resistance. Longer bolts can typically withstand more shear force, thus providing greater resistance.

d. Bolt diameter: The diameter of the bolt is another important factor. A larger diameter bolt has a larger cross-sectional area, which can withstand more load, thus providing greater resistance.

So, the correct answer is b. All of them. The bearing resistance of the bolt depends on the plate thickness, bolt length, and bolt diameter.