 Registers located over a brick furnace shall be supported by a brick shaft built up from the cover of the hot-air chamber; said shaft shall be lined with a metal pipe, and all wood beams shall be trimmed away not less than four inches from it. Where a...  The General Ordinances of the City of Portland - Seite 205von Portland (Or.) - 1905 - 664 SeitenVollansicht - Über dieses Buch
 | 1915 - 338 Seiten
...top. 5. Every hot air furnace shall have at least one register without valve or louvres. 6. A register located over a brick furnace shall be supported by a brick shaft built up from the cover of the hot-air chamber; said shaft shall be lined with a metal pipe, and no woodwork shall be within 2 inches... | |
 | National Board of Fire Underwriters - 1916 - 134 Seiten
...overheating, every hot air furnace shall have at least one register without valve or louvres. 8. A register located over a brick furnace shall be supported by...chamber; said shaft shall be lined with a metal pipe, and no woodwork shall be within 2 inches of the outer face of the shaft. A register box placed in the floor... | |
 | Spectator Company (New York, N.Y.) - 1916 - 798 Seiten
...5. Every hot air furnace shall have at least one register without valve or louvres. / 6. A register located over a brick furnace shall be supported by a brick shaft built up from the cover of the hot-air chamber; said shaft shall be lined with a metal pipe, and no woodwork shall be within 2 inches... | |
 | Buffalo (N.Y.) - 1920 - 816 Seiten
...are properly protected by a metal shield, when the distance shall not be less than one foot. § 179. Registers located over a brick furnace shall be supported by a brick shaft built up from the cover of the hot-air chamber; said shaft shall have a metal pipe inside of it. § 180. When a register box is placed... | |
 | National Board of Fire Underwriters - 1920 - 340 Seiten
...top. 5. Every hot air furnace shall have at least one register without valve or louvres. 6. A register located over a brick furnace shall be supported by a brick shaft built up from the cover of the hot-air chamber; said shaft shall be lined with a metal pipe, and no woodwork shall be within 2 inches... | |
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