Cam cepheli gokdelenler (unitized curtainwall) kat dosemeleri arasindaki bosluk (slab edge/perimeter void) uzerinden dikey yangin yayilimi (leapfrog effect) riski tasir. ASTM E2307 perimeter fire-barrier testi, ASTM E119 duvar, ASTM E814 firestop penetrasyon ayri ayri uygulanir. Grenfell 2017 sonrasi cephe yanma siniflandirmalari siki arttirildi.
Perimeter Void Riski
- Slab edge: Dosemeyle cephe arasi bosluk 25-150 mm
- Spandrel panel: Pencere arasi dar band - tam cam yasak
- Mullion: Dikey karkas - 2h fire stop
- Isolation: Yapisal yalitim + fire barrier
- Leapfrog yangin: Cam patlama → ust kat girme
ASTM E2307 Testi
- Test: Iki kat mock-up
- Sure: 2 saat min (F ve T rating)
- Yanma senaryosu: Interior room fire + windowout flame plume
- T rating: Dosemeye temperatur 140 C altinda
- F rating: Alev gecisi yok
- Mineral wool: En yaygin - 4 pcf yogunluk, 4 inch kalinlik
Spandrel Panel
- Yukseklik: 900 mm min flame plume sinirlama
- Back-up: Cimento panel veya metal
- Shadow box: Cam arkasi gorus blockedge
- Isi yalitim: Mineral yun, aluminyum kompozit panel YASAK
- Grenfell dersi: PE-core ACM panel A1/A2 olmalı
Firestop Tasarimi
- Mineral wool: Kompresyon percent 20-35
- Smoke seal: Silikon sealant ust
- Safing ok: Z-shape metal ile tutma
- Movement: Building sway 25 mm kompanze
- UL HW/CW system: Onaylanmis detay
Turkiye ve Dunya Olaylari
- Grenfell 2017: 72 olu, ACM cladding
- The Address Dubai 2015: Cephe leapfrog
- Mermerler Residence 2012: Istanbul cephe yangini
- Beckton London 2019: HPL cladding
- Mevzuat: BYKHY Ek-2/F, Class A2-s1,d0 zorunlu 28 m uzeri
Firestop SprinkCalc ile
SprinkCalc gokdelen perimeter firestop detaylari, ASTM E2307 compliance, spandrel panel tasarim ve cephe yangin yayilim kontrolu yapar.
SprinkCalc'i App Store'dan indir
Kaynaklar & İleri Okuma
ASTM E2307, ASTM E119, ASTM E814, NFPA 5000, BYKHY Ek-2/F, EN 13501. NFPA 5000 Bina Yapi Kodu.