A scaffold system comprising a series of horizontal scaffold components, a series of conventional scaffold type uprights (102, 103) releasably connectible to any of the series of horizontal scaffold components and a series of platform members securable between opposed horizontal scaffold components for forming a continuous work surface above supporting conventional scaffold type uprights (102, 103); wherein each horizontal scaffold component comprises an elongate top support member for supporting any of said platform members; said elongate top support member at opposite ends thereof having a connecting member adapted to releasably connect with any of said conventional scaffold type uprights (102, 103); said connecting members being located downwardly of said elongate top support member and including a drop wedge movable downwardly into said connecting member for releasable connection with any of said conventional scaffold type uprights (102, 103); each drop wedge being movable upwardly towards said elongate top support member into a clear space between said elongate top support member and the respective connecting member, wherein said scaffold system includes a series of "T" shaped capping components wherein each "T" shaped capping component includes a downwardly extending spigot connection for insertion into an upper end of any of said conventional scaffold type uprights (102, 103) and a top member that extends across said spigot connection, and wherein each "T" shaped capping component includes vertically extending locating tabs centered on said top member with locating tabs at opposite ends of said top member, said scaffold system being characterized in that each "T" shaped capping component is received and supported by an upper end of said conventional scaffold type uprights (102,103), and in that each top member extends across the upper end of an engaged scaffold type upright (102,103) and forms an extension of two aligned top members of horizontal scaffold components secured at the upper end of the engaged conventional scaffold type upright (102,103), each of said conventional scaffold type upright (102,103) supporting one "T" shaped capping component and two horizontal scaffold components, and in that said locating tabs are insertable into slots in the ends of the elongate top supporting member of any of said horizontal scaffold components. said elongate top support member at opposite ends thereof having a connecting member adapted to releasably connect with any of said conventional scaffold type uprights (102, 103); said connecting members being located downwardly of said elongate top support member and including a drop wedge movable downwardly into said connecting member for releasable connection with any of said conventional scaffold type uprights (102, 103); each drop wedge being movable upwardly towards said elongate top support member into a clear space between said elongate top support member and the respective connecting member, wherein said scaffold system includes a series of "T" shaped capping components wherein each "T" shaped capping component includes a downwardly extending spigot connection for insertion into an upper end of any of said conventional scaffold type uprights (102, 103) and a top member that extends across said spigot connection, and wherein each "T" shaped capping component includes vertically extending locating tabs centered on said top member with locating tabs at opposite ends of said top member, said scaffold system being characterized in that each "T" shaped capping component is received and supported by an upper end of said conventional scaffold type uprights (102,103), and in that each top member extends across the upper end of an engaged scaffold type upright (102,103) and forms an extension of two aligned top members of horizontal scaffold components secured at the upper end of the engaged conventional scaffold type upright (102,103), each of said conventional scaffold type upright (102,103) supporting one "T" shaped capping component and two horizontal scaffold components, and in that said locating tabs are insertable into slots in the ends of the elongate top supporting member of any of said horizontal scaffold components.