column 96 that can be in the shape of a channel beam the door frame panel 92 can provide rear panels 95 to which sheetrock u00ae or other inside wall panel material 58 can be attached in fig2 25 a corner 97 forms the connection between two walls 11 14 corner 97 employs a corner column 98 constructed of two column parts 99 100 these column parts 99 100 can provide openings 101 so that electrical wiring or plumbing can be routed through the parts 99 100 it should be understood that similar openings 101 can be provided in the side panels 20 21 of any full length wall panel 18 or in any other side panel or interlocking section disclosed herein this enables electrical lines and plumbing to be routed within a wall 11 12 13 14 in between section 19 and inside wall panel 58 a pair of corner wall panels 102 103 are connectable to column 96 using screws 38 or other suitable fasteners column parts 99 100 are also connectable together using fasteners such as screws 38 arrows 104 in fig2 illustrate the connection of corner wall panels 102 103 to column 98 each corner wall panel 102 103 provides an interlocking section 105 or 106 that can form an interlocking connection with a full length wall panel 18 such as the interlocking connection shown in fig2 each interlocking section 105 or 106 is provided with an inner panel section 107 and 108 to which an inside wall panel can be attached corner column 98 can also be used with a corner panel 37 shown in fig7 and 8 fig2 27 shows the use of a corner panel.