Attachment 4 - Site Investigation and Slab Report

                  Cornice fixed to roof framing only
                  Cornice
                  allowingfixed to roofofframing
                           movement              only
                                           masonry wall
                  allowing movement of masonry wall




                                                                                     7.6      Internal Doors
                                                                                     It is convenient to make most internal-wall
                                                                                     articulation joints coincide with door openings. An
                                                                                     effective joint can be made by making openings full
                                                                                     height from floor to ceiling. Normally, an articulation
                                                                                     joint will be provided on only one side of a door.
                                                                                          There are three ways of installing a door in a wall
                                                                                     Figure 31:
                                                                                     ■ Full-height door and frame with or without a
                                                                                          head
   (a) PERIMETER WALL WITH FRAMED OR TRUSSED ROOF                                    ■ Full-height door frame with an infill panel fixed
   (a) (Internal
        PERIMETERwall WALL   WITH roof
                      with framed FRAMED    ORdetail)
                                       similar  TRUSSED ROOF
       (Internal wall with framed roof similar detail)                                    above a standard-height door
                                                                                     ■ A standard-height door with masonry above
                                                                                          separated from adjacent walling by articulation
   Bottom chord of roof truss
   Bottom chord of roof truss                                                             joints either offset (Figure 10), or more
                                                                                          commonly, in line with the jambs (Figure 12).
                                                                                          To accommodate the movement at the
   Gap sufficient                                                                    articulation joint, the architrave on a timber door
   Gap
   to    sufficient
      allow  for                                                                     frame should be fixed only to the frame and be large
   to allow for
   expected   movement                               Cornice fixed to roof
   expected movement                                 Cornice
                                                     truss onlyfixed  to roof
                                                                  allowing           enough to cover the articulation joint. Metal door
                                                     truss only allowing
                                                     movement     of                 frames should have allowance for a gap where the
                                                     movement
                                                     masonry wall of
                                                     masonry wall
                                                                                     brickwork is built into the edge of the frame. When
                                                                                     internal masonry walls incorporating metal door
                                                                                     frames are to be rendered, a neat joint should be
   (b) INTERNAL WALL WITH TRUSSED ROOF                                               formed between the render and metal door frame
   (b) INTERNAL WALL WITH TRUSSED ROOF                                               which can be sealed and painted over.
Figure 32 Fixing of cornice at articulated
masonry walls


                                           Keep distance between articulation joints to a minimum (5 m maximum)


                                                                      Provide bed-joint
                                         Articulation joint           reinforcement over arch             Articulation joint

Arch depth
(300 mm
minimum)
                                                                                                                                              Arch
Arch rise                                                                               Potential                                             height
(0.25 x span                                                                            crack at
minimum)                                                                                crown of arch
                                                                                        (weakest point)


                                                                                                  Spring
                                                                                                  line




* Buttress width designed to resist
  horizontal force from arch and
  overturning                          Buttress width*                          Arch span


Figure 33 Detailing of arches (semicircular arch shown)


                                                                                                                               Articulated Walling Page 19