(no lateral bracing specified) = 3

Introduction to Wood Design
13.6 Glulam Header Beam in Garden Centre
GIveN vALUeS AND ASSUMPTIoNS
Design the glulam header beam B3 in the garden centre.
• Beam span = 8.13 m
• Use 20f‑E D.Fir‑L glulam.
• wf and w based on 1.5 m tributary width.
• Pf and P from B2.
P f
2.03 m
CALCULATIoN
23.2 kN 23.2 kN
P = 15.2 kN
Pf = 23.2 kN
2.03 m
Mf =
wL f P L
8 2
2
f
+
2
=
5.04 # 8.13
+
23. 2# 8.13
8
2
= 136 kN•m
Vf = wL f 3Pf
+
2 2
= 5.04 8.1 # 3
+
3 # 23. 2
8
2
= 55.2 kN
For L/180, deflection is based on total specified load
3 2
ESIREQ’D = 180 #
5wL + 19PL
384
= 360 #
5 3.32 8130 + 19 15 200 8130 384
# # # #
= 13 200 × 109 N•mm2 Checklist satisfied (WDM Section 2.5)
2.03 m
2.03 m
3 2
w f = 3.36 × 1.5 = 5.04 kN/m
w = 2.21 × 1.5 = 3.32 kN/m
13-25