GB 1232677 A
1,232,677. Building mullion. ARMCO STEEL CORP. 23 Oct., 1968, No. 50257/68. Headings E1K and E1W. A mullion is formed from a section 13a (Fig. 3b) which has a central web to one end of which is integrally attached the shorter leg 15c of a substantially U-section member and to the other end of the which is integrally attached a leg 16a which is longer than leg 15c and which has an extension 16b at an angle to leg 16a. In order to form the mullion the U section is closed by a second section which is attached to the web of the first section 13a. This second section 13b may be similar to the first. One end of the resultant substantially I- section beam is enclosed in the girder 27 and cover plate 22 is attached to the other flange of the I-beam (Fig. 2) to complete the mullion. It may be used to support panels 12 wall section 11, or door and window jambs.