Laserfiche WebLink
i <br /> � <br /> . ,.... ,--. <br /> . � Mr. Ben Edwazds <br /> May 19, 1988 <br /> Page Three <br /> o Stair Width - 44 inches <br /> o Fiandrails may project 3-1/2" from each side of stairway stringers and <br /> other projections maq project into required width 1-1/2" on each side. <br /> o Rise/Rum of Stairs - <br /> . Not less than 4 inches nor greater than 7 inches for rise (6-1/2" <br /> actual) <br /> . Not less than 11 inches for treads (11" actual) <br /> o Stairway to Roof - <br /> . Every building 4 or more stories in height; one stairway shall extend <br /> to the roof surface. All other stairs must have a hatch of a <br /> minimum of 16 SF opeaing onto roof. Stair #1 has hatch and atair <br /> �#2 goes to the roof. <br /> o Dead-End Corridars - No more than 20 feet <br /> o Corridor Construction - 1 hour fire resistive <br /> o Enclosure Construction - <br /> . Encloaure walls shall be of not lesa than 2 hour fire reaistive <br /> construction in building of 4 ot more stories in height or of tqpe I ot <br /> type II fire resistive construction. Stairs enclosure walls aze 10" <br /> concrete walls. <br /> 7. The entrq lobby is designed as a vertical shaft. All doors lending into <br /> the shaft aze automatic closing 1-1/2 hour B label with all sepazation <br /> walls surrounding the shaft having a 2 hour rating. Opening in the <br /> exterior wall are per table 5A with fire sutters on the east windows that <br /> aze lesa than 10' form the adjoining building. The atairway in that <br /> enclosure is not a required exit way. <br /> I trust this gives you the in£ormation you require, if not, or if I can be of any <br /> further assistance� please call. <br /> Sincerely, <br /> ' i��"�'"'"' <br /> Dennis Forsyth <br /> Project Manager <br /> 153p <br /> cc: Mr. Mackie Skene <br /> Mr. Scott Greenwood <br /> Mr. Alan Limpo <br />