IS : 800 - 1971 recommends that in a splice plate the number of rivets carrying calculated shear stress through a packing greater than 6 mm thick, is to be increased by 2.5% for every

• 1.00 mm thickness of packing
• 1.50 mm thickness of packing
• 2.0 mm thickness of packing
• 2.50 mm thickness of packing
• 3.0 mm thickness of packing.