2106 GRAND AVE 2016-01-01 MF Import

� -- Datc: July 17, 2007 To: L'verett rngineering, New I3uilding Plans Kevic��'. Subject: Leuer of Rcsponse to Dra��ing Corrections (plan chk # 80706-063). As shown bclow, plcasc find thc original Enginecring conccrns in ordcr. Bclow cach conccm is thc location (dra�ving shcct number) .vhere conccrn is clarificd/addressed. Please call the undersigned with any questions or concems. 1- IIIC903.2.7requires that the building Uc protccted hy an aulomatic sprinkler sys�em. For any non-protcctcd door or�vindow openings�vhatsocvcr on thc norlh and south��•alls, IDC 704.R.1 rcquires the sprinklcr system to be in accordnnce with IBC903.3.1.1 �vhich is and NFPA 13 System (not NFPA 13R). 7'he intent should be ineluded on the pinns. This concern is clarificd/addresscci on �Ira�ving shcet I. -r_ � ' Thc sitc plan indicatcs lhc north and south ��alls to be S 0" fiom thc property lincs. Thc tloor plans indicatc somc upper tloor walls to be 4' 0" from the property lines. IIIC704.5 requires these ��alls to have a fire-resistance rnting of ono-hour that is rated for czposurc from both sidcs. This concern is cl�rified/addressed on dra�ving sheet 3 and 3. 3- The floodeeiling assemblics arc rcquired ro huve a sound transmission class of not Iess � ' than 50 and an impact insulation class of not Icss than 50 in accordance�vith IE3C1207. Pleasc providc the assembly construction dctail and test agency idcntification numbcr. 1�his conccrn is clarificd/addresscd on dri�ving shcet 7 and 8. 4- The stairway at the east cnd of tho building is requircd to bc cnclos�d in accordancc with fI3C_LQI9. The third floor storage mom is not pennitteJ. 7�he walls of this enclosure along with the olher s-- lairwa�and thc clevator are rcquired to be constructed as firc barciers �vith tirc-resisiancc ratings of 2 hours. Thesc fire barriers are requimd to bc continuous through conccalcd Iloodcciling spaces. 1'he protection is required to extend from thc lop of ihe �oor�hcathing to the underside of the 11oor sheathing above (Sec cncloscd 113C706.d commcntaq�). All doors into the exit stairnay enclosures arc required to ha��c a lorc protection ration of 1.5 hours in accordancc with 1BC715.3. This concem is clarified/addresscd on dra�ving shect 1 and 8. 5- The cicvator cyuipment room is requircd to bc cncloscd with 2 hour walls and a 1.5 hour door. 1[3C300C,.�1. I�his conccni is clarificd/addresscd on drqwing shcct 4. I�2