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(nrst Point Apartments - Sonta Ana, CA) Commont #25 TAMMR Juslltlcatlonl: Provide construction dotails to show compliance wilh requhements of CBC Soction 1206.3.2 tor horizontal ai lntake for each coud yard for lhis proiecl. Resoonse: Horlzontal alr lntake at tho bottom of each Level 2 court ln Building A and B ls providâ‚¬d by way ot tha open-end6d ,irefightâ‚¬r lunnel connecting each court to at least one adjoining murt(s). CBC Sscllon 1206.3.2 rsquires that cou( â‚¬ndosed on all four sides to be provided with a horizontal alr lntake at tho bonom of the court or be adjacont to a yard or publlc way. To comply with the lntent of this soction, lhe op6n-6nded flrefighler tunnels will provide an avenue for natural ventilation from an adjacent court that is equivalent to the requlred opening of 10 square feet connected directly lo a street or yard, Tho courts ln the prolect buildings are much larger than the minlmum dimensions roquired by Section 1206.3 (i.e. 9'x 16' mlnimum dimensions for a s-story court). Courtyards 1 and 2 ln Bullding B have approximate dimensions of 62' x 90'whora Courtyard 3 has approximate dimensions of 48'x90'. These dlmenslons provlds a court area that ls at loast 30 times larger lhan the mlnimum sizo court required by CBC Seclion 1206.3. The larger sizes of ths courts within the project bulldings do not have the sams characteristics of a smaller four-sided court that can act as a chlmney durlng summer weather whon lhe building mass is heated from the daytime sun (referenced attachad drawing sheet A2.2.1). Additionally, it ls not lntonded for lhe courts to function as an efficlent source of natural ventilalion for the spaces they front (i.e. dwelllng unlts, loungos, etc) therofore the requirement for having the courts abut a yard or public way is l6ss esssntial. ,hosa rwo oxlt pas sagowdys show complldnce with tllla CBC Sectbn 1024.1.'... exlt pdssdgewdy otl olher then lovel of exit discharyo, shall lermlnale al an exit'Arsq the opening protection in lhe exlt passogeways shal, comply with Sectbns 1024.5, 716, and Table 716.5 roqulrements. Response: Th6 firâ‚¬fighl6r tunnols ar6 provided for fire dâ‚¬partment sccess to the lnterior courtyards per OCFA Guldelin6 B-09. These tunnsls ar6 not utilizsd as an sxlt cornponent of the eorsss svstsm and are not rsouired to comolv with tho rgoulroments for exit oassaoewavs. The cunent ogross schsme does not rBquiro the lntroducuon of exit passageways at the lo$/est residentiel level 8s defined in the CBC and as regulated by CBC Section 1024. These tunnels will be referred to as'2-Hour Ratod Firerighter Tunnels' ln lleu of'2-Hour lnterior Exit Passagewa/ as previansly sho,vn on tho dra$/ings. Per OCFA Guideline B-09, the interior doors opening into the tunnels will bâ‚¬ g0-minute rated self- or automatic-closing assemblies, but lhe ends of each segment of tunnel that connects the open court yards should not be requlred to be endosed since the opâ‚¬ning is required for firotighters to conducl their operations. ln addition to thâ‚¬ dan checl cornment responses abo/e, tho design tâ‚¬am nror.rld like to address the disatErgo of interior 6xlt stalru/ays at Lâ‚¬vel l: Eoress Court Condition: The interior exit stdruray identilied as Stair *1 discharges st Lâ‚¬vd 1 to a p.ivate sidâ‚¬ualk located on the rrEst side of the project that leads to tho public way on East First Streâ‚¬t. The property linâ‚¬ is located apprqimately 6.5- feet frqn the face of the â‚¬xterior wall on the vuesi side of the building. As such, thls cteatos an egrâ‚¬ss court conditicn that is less than 1o-feet in widlh measured betLEen the exterior wall cf ttle boildng ard the propâ‚¬rty line. See Exhitit A attachâ‚¬d. Psgâ‚¬ 3 oI4 I Novâ‚¬rnbâ‚¬r 25, 20'19 I Rsr, I jenscnhqhas.cont