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r <br /> M is-�u'tR�'�,� — U.bwa'n.ty <br /> �I7t1� � -f�}� �r.� OF ovZ �vU'l� c't'AN�#Z. <br /> a 0�1 $l S(►7� OF G2 1�'JGlM7 �R� <br /> G�'��I.�u <br /> Mr. Jeff McFall <br /> June 22, 1992 <br /> Page 2 <br /> b) Handrails required on both sides of center aisles, 3315(g): UBC 3315(g) notes "locued either at <br /> side or within the aisle width." Handboot to the Unifocm Building Code, 1991 ed, notes "'lbe <br /> handrails can be placed on either side of or down the center of the aisle savad." 'Ihe use of the <br /> term either and the use of singulaz�;�g, not sides, seems to make clear we may provide rails on <br /> one side only, as at the side aisles and as we had previously discussed. We believe Mr. Barbera's <br /> comment on rails at "each side of the two center sisles" is an enor in intecprGation. Please rad <br /> the enclosed and give us direction. <br /> �,,,{� y`�,�%� c) UBC 3315 (�2. requires a "contrasting marking stripe or other approved mazking" at each tread <br /> GU'^" 2 � nosing or leading :xige "such that the location of each tread is readily apparent when viewed '.� <br /> ��N� D�' descent." As di;cussed on 5/16/92, we aze requesting your approval of an alternate markin, <br /> ��� � .'�{ system by providing a conuasting color carpet at altemate uead and riser unit, speciflcally a.�h. <br /> ,L ��Y" intertnediate step between seatin�risers. <br /> L vY � <br /> �u'� � We know of no othec reasonable way of making both the nosing location and the tread depd� <br /> (A P� <br /> �,,�N readily appaze� when descending. A nosing "stripe" is easily provided on concrete or <br /> MY'��(' ��� composition t�e steps but, with camet, it is necessary to sew m a stripe. This seam, near a <br /> �' nosing, is very Iikely to fail and become a uipper. A stripe cannot be woven in due tc the <br /> �v'� varying shapes of the nosings and the "grain" of the carpet. The cost to do individually, if <br /> `WI� possible, would be excessive. <br /> �1 We feel our propnsed alternate eacceeds the intent of the requirement and cleazly identifies the <br /> changes in levels. We hope you will consider this solution an "approved marking". <br /> �A 7.1 Detail I5. Provide handrail at stage side of stairs to stage: A 36" wide stair requires a handrail at <br /> one side only. No handrail/guazdrail is required at the front of a stage. Handrail is provided u <br /> the wall side of these stage stairs. See 21/A7.1. Please confirm this added rail is not*equirod. <br /> TI �) Have provided 48" clear at front cross aisles to side ezits. <br /> �b) You note to provide 48" cleaz at back aisle behind whcelchairs. 'Ihe upper landing is 8' -0" <br /> wide, less the acoustical panels (2"). I belicve that since this rear aisle serves only the side ais►e <br /> as an exit, only 36" clear is required. We will have at least 46" clear, if the wheelchair is 48" or <br /> less deep. Confirm this is acceptable. <br /> �,�. � M 2.2 a) Add fire dampers threugh corridor walls to horizontal exits in fouc locations: Will add these four <br /> U'�/_„r,�,� plus one more we found. Conversely, the fira dampers we show, top and bottom, to the retum <br /> �1N��;�j� air shafts at the front of the House serve no purpose, so we plan to delete them. Since:these <br /> ��,Ptu"I openings aze within the same space (House) and aze separated from the stairs by a rated shaft <br /> � wall, there is no fire damper sepazation required. Please confirm. <br /> E 3.2"'a) Add exit light at west exit from Lobby 125: This will be added to clazify exit path from House. <br /> ��Id��) � b) Add exit signs in vestibules between House and south Lobby: This is not a required exit and <br /> ;�p�'" � should not be encouraged as such to increase the load in the main Lobby. In addition there <br /> should be no confusion as to the directiAn <br /> ��� <br />