Study on Strength and Stiffness of Meranti Wood Truss with Plywood Gusset Plate Connection and Lag Screw Fastener

Abstract

Wooden truss could be one of the options to be used as structural element in both building and bridge. Wooden truss overcomes the limitation of timber with great dimension with necessary strength. In this study, the wooden truss was designed with Meranti wood type with elasticity modulus of 10,520 MPa and specific gravity of 0.8. The timber used has cross-section size of 45 mm × 45 mm, with truss frame span of 2,445mm and height of 400 mm. The connection between the timbers was using 18 mm thick plywood with 6 mm lag screw fastener. The destructive testing that was conducted on 3 test samples showed a result that the strength of the truss was at an ultimate load of 31,042 N with a ductility ratio of 5.61. Numerical study of the truss' stiffness with this connection model resulted in stiffness degree value of 0.94.

Analisa Kekuatan Tahanan Lateral Pada Sistem Komposit LVL Kayu Sengon dan Beton Pracetak

“…Penggunan kayu sebagai bahan konstruksi telah lama berkembang sebelum munculnya teknologi beton dan baja. Saat ini ketersediaan kayu dalam ukuran besar dengan kekuatan yang diinginkan sudah sangat terbatas (Pratiwi & Tjondro, 2018). Sehingga Laminated Veneer Lumber (LVL) menjadi salah satu teknologi dalam mengoptimalkan penggunaan kayu.…”

Study on bearing capacity of LVL asymmetric truss of lightweight poplar wood

“…There are many studies on light wood trusses with different connection methods and different truss types (Xiao et al 2014;Sagara et al 2017;Pratiwi and Tjondro 2018). Barbari et al (2014) introduced a new connection system for traditional timber trusses and conducted the finite element analysis on bearing capacities, discovering that the bearing capacity of the developed connection systems was four times higher than the design value.…”