Arched Multi-Width Arcadian Pergola

Materials for a glue-laminated, arched Arcadian Pergola:

5 rafters 5 x 9 x 132cm
4 support struts 9 x 9 x 63cm
4 glue-laminated timber arched bearers 2,7 x 9 x 239cm allowing you a passageway of 180cm
(Variation: Bearer length 189cm, width of passageway 130cm
Bearer length 214cm, width of passageway 156cm
4 upright posts 9 x 9 x 240cm for inserting into post anchors