1969-HKRS30-8-59_Part02 — Page 43

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Table F-Glazing contd.).

Construction and Materials

2. Glass reinforced with wire not less than No. 26 3.W.G. in diameter laid to a square mesh measuring 1 inch from centre to centre of wire, and electrically welded at the inter- sections, or laid to a hexagonal mesh measuring 1 inch across the flat sides.

Thickness of Glass

Minimum thickness of

glazing in inches for

period of

2

悲

+

hours. bours, hour, houT”.

In windows, doors, borrowed lights, lanterns and skylight, glass complying with paragraph 1 or 2 of this Table shall be fixed with wood or metal fillets in panels not exceeding 4 sq. ft. in area secured to frames of metal (fixed shut) having a melting point not lower than 1,800 degrees Fahrenheit, or in timber frames (öxed shut) having a minimum thickness of 14 încives,

Glass Bricks or Blocks

In panels not exceeding 40 sq. ft. in area

with expansion joints not less then 1/10th inch per foot width of the panel at each side of the panel, and not leas than 1/10th inch per foot of the bright of the panel at the top of the panel

Table G-Doors.

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Explanatory Note.

(Thu Note is not part of the regulations, but is intended to indicate their general purport).

These regulations---

(a) require that where works threaten the safety of a street, such

street shall be provided with adequate support;

(b) delete the reference to certain by-laws which have now been

revoked;

(c) increase the types of certain structural designs which authorized architects who are not qualified as engineers are permitted to prepare; and

(d) delete the reference to the Schedule to the London County Council By-laws in regulation 94 and incorporate the provisions of that Schedule in the principal regulations.

(Secretariat BL 1/741/521V)

Construction and Materials

Finished minimum overall thickness in inches for

4

period of 2

+

Solid timber with timber door stops continuou

round the sides and the head of the frame and having a dimension parallel to the face of the door of not less than 1 inch and at right-angles to the face of the door of not less than 11 inches........+++++++

Fire-check flush doors complying with the appropriate provisions of 3.5. 459; Part 1931

( hours. | hours. hour.bour.

***

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COUNCIL CHAMBER,

8th April 1969.

Clerk of Councils.