In order to make an I-beam for tests, LVL, as flange materials, and two kinds of structural panels, as sheathing materials, were connected by nails with different diameters. Thereafter, static and dynamic bearing capacity of the connections was tested. Testing results showed that the static and dynamic bearing capacity of the connections increased with increasing sheathing thickness and nail diameter. It was observed that when nail diameter was 3.8 mm, to connect 22 mm thick oriented strand board（OSB）, the connection possessed better performance. It was concluded that selection of nail diameters for making this kind of I-beam should consider sheathing thickness in practice.