(1) Panel-walls shall be secured to the structural frame at both ends and, where required by section 52, along their tops, so as to prevent lateral movement, by means of corrosion-resistant anchors, each of cross-sectional area of not less than 60 square millimetres.

(2) There shall be one anchor for each 0,5 square metre or remaining part thereof of the face area of the panel-wall, and anchors shall be evenly spaced along such edges of the wall as are anchored by another approved method.

(3) Panel-walls which overhang their supports shall comply with the requirements of section 22.