An assembled structure comprising: a panel having a first surface, a second surface and an edge, the panel being formed by a resin infusion from a first fiber reinforced resin layer at the first surface and a second fiber reinforced resin layer at the second surface and containing therebetween a core material and together defining an integral resin infused structure; a member connected by adhesive to the panel along the edge of the panel; the panel being shaped at the edge of the panel to define a web formed from a fiber reinforced resin layer interconnecting the first surface and the second surface and extending along the edge; the panel being shaped at the first and second surfaces along the edge of the panel to define a portion (21, 22) of each of the first and second surfaces along the edge which is tapered at an angle inwardly such that a width of the web at the edge is less than a space between the first and second surfaces at positions thereon spaced from the edge; the member being shaped at the edge of the panel to define channel 23 containing the web and the portions of the first and second surfaces therein and including a base of the channel adhesively attached to the web, a first side wall of the channel adhesively attached to the tapered portion (21,22) of the first surface and a second side wall of the channel adhesively attached to the tapered portion of the second surface; wherein the first and second side walls are tapered at an angle matching that of the angle of the portions of the first and second surfaces; and characterized in that a layer of adhesive covering the web and covering those parts of the portions contacting the side walls and thereby attaching the web to the base and the portions to the side walls; wherein the adhesive has a thickness not less than 1 mm or more than 2.5 mm. a panel having a first surface, a second surface and an edge, the panel being formed by a resin infusion from a first fiber reinforced resin layer at the first surface and a second fiber reinforced resin layer at the second surface and containing therebetween a core material and together defining an integral resin infused structure; a member connected by adhesive to the panel along the edge of the panel; the panel being shaped at the edge of the panel to define a web formed from a fiber reinforced resin layer interconnecting the first surface and the second surface and extending along the edge; the panel being shaped at the first and second surfaces along the edge of the panel to define a portion (21, 22) of each of the first and second surfaces along the edge which is tapered at an angle inwardly such that a width of the web at the edge is less than a space between the first and second surfaces at positions thereon spaced from the edge; the member being shaped at the edge of the panel to define channel 23 containing the web and the portions of the first and second surfaces therein and including a base of the channel adhesively attached to the web, a first side wall of the channel adhesively attached to the tapered portion (21,22) of the first surface and a second side wall of the channel adhesively attached to the tapered portion of the second surface; wherein the first and second side walls are tapered at an angle matching that of the angle of the portions of the first and second surfaces; and characterized in that a layer of adhesive covering the web and covering those parts of the portions contacting the side walls and thereby attaching the web to the base and the portions to the side walls; wherein the adhesive has a thickness not less than 1 mm or more than 2.5 mm.