Blast and fragment resistant wall sections used inside structures like ships

A method of assembling a structure, comprising:

• attaching a first end of a first metal layer directly to a connection piece, the first metal layer extending in a plane from the first end to a second end,
• placing an armor steel plate coated on both sides with elastomeric material adjacent to the first metal layer, after the first metal layer is attached to the connection piece, without attaching the armor steel plate directly to the connection piece, whereby the first metal layer is allowed to stretch relative to the armor steel plate in said plane at least in response to forces resulting from a pressure surge from an explosion, and
• attaching a second metal layer directly to the connection piece and/or the first metal layer and over the armor steel plate, the first and second metal layers having a higher ductility than the armor steel plate.

A method of assembling a structure comprising assembling at least part of the structure with a wall, the wall comprising:

• first and second metal layers each having first and second ends and extending, respectively, in first and second parallel planes and each of the first and second ends attached to elements of the structure, and
• inserting an armor steel plate coated on both sides with elastomeric material between the first and second metal layers after each of the first and second ends of said first and second metal layers are attached directly to elements of the structure without attaching the armor steel plate directly to said elements,
• whereby the first and second metal layers are allowed to stretch relative to the armor steel plate in said first and second planes, respectively, at least in response to forces resulting from a pressure surge from an explosion, the first and second metal layers having a higher ductility than the armor steel plate.