to a horizontal outrigger element tied off to the structure by raising the plate to a horizontal position or fastened to a downwardly sloped member attached to a pitched roof by again adjusting the position of the mounting plate the collar assembly positions the timber vertically without inhibiting longitudinal movement where most stresses are usually generated as the scaffolding settles at its footing in fig7 a brace socket 126 is shown the brace socket 126 includes a rectangular tube section 128 dimensioned to receive the end of a two by four brace 129 segment as shown in phantom the tube section 128 is pivotally attached to a yoke 130 by pivot pin 132 the yoke 130 is rigidly connected to a mounting plate 132 which is fastened to the face of the timber 12 the brace socket is centrally mounted on the timber face to allow the bracket to pass up and down the timber without the projecting ears on the plank bracket contacting the brace socket the two by four is retained in the socket and the mounting plate is mounted on the timber 12 by duplex nails 134 in pre existing holes the manner of assembly of the scaffolding is described with reference to the schematic illustration of fig8 a pair of brace sockets 126 are attached to each timber brace segments 129 preferably no longer than the timber height to the brace sockets are installed and left loose against the timber a collar assembly 110 is slipped over the end of each timber and retained temporarily by a removable rail the plank brackets may be installed at this time or after raising the timbers the.