1646 E Washington Ave - Plan - Laserfiche WebLink

Home Browse Search

V V S U L T I N G | 76 North M eadowbrook Drive Scott E . Wyssling, PE Alpine, UT 84004 C o l e m a n D. L a r s e n , S E , P E off i c e (2 0 1 ) 8 7 4 - 3 4 8 3 G r e g o r y T. E l v es t ad , P E s w y s s l i n g @ w y s s l i n g c o n s u l t i n g . c o m March 2, 2023 Current Insight 2852 W . Amini W a y South Jordan, UT 8 409 5 Re: Engineering Services Sianc as Tao Residence 1646 East Was hi ngton Avenue, Santa An a, C A 5.850 kW System T o W h o m It May Concern: W e h a v e r e c e i v e d i n f o r m a t i o n r e g a r d i n g s o l a r p a n e l i n s tal l ati on o n t h e r o o f o f t h e a b o v e r e f e r e n c e d s tr u c tu re. O u r e v a l u a t i o n o f t h e s t r u c t u r e is t o v e r i f y t h e ex i s t i n g c a p a c i t y o f t h e r o o f s y s t e m a n d its abi l i ty t o s u p p o r t t h e addi t i o n al l o a d s i m p o s e d by t h e p r o p o s e d s o l a r s y s t e m . A. Site A s s e s s m e n t i n f o r m a t i o n 1. Site visit documentation identifying attic information Including size and spacing of framing for the existing roof structure. 2. D e s i g n d r a w i n g s o f t h e p r o p o s e d s y s t e m i n c l u d i n g a s ite p l an , r o o f p l a n a n d c o n n e c t i o n det ai l s f o r t h e s ol ar p a n e l s . T h i s i n f o r m a t i o n w i l l b e u til i z ed f o r a p p r o v a l a n d c o n s t r u c t i o n o f t h e p r o p o s e d s y s t e m . B. D e s c r i p t i o n o f S t r u c t u r e : R o o f F r am i n g : 2x6 dimensional l u m ber at 24" on center. R o o f M aterial : Composite Asphalt Shingles R o o f S t o p e : 8 d e g r e e s A tt i c A c c e s s : Accessible F o u n d a t i o n : ? Permanent C. L o a d i n g Cri teria U s ed « D ead L oad o Existing Roofing and framing = 7 psf o N ew Sol ar Panets and Racking = 3 psf o T O T A L = 10 PSF « Live L oad = 20 psf (reducible) ? 0 psf at locations of solar panels * G r o u n d S n o w L o ad = 0 psf « W i n d L oad based on ASCE 7-16 © Ultimate Wi n d Speed = 95 mph {based on Risk C atag ory II} o Exposure Category C A n a l y s i s p e r f o r m e d o f t h e ex i s t i n g r o o f s t r u c t u r e u t i l i z i n g t h e a b o v e l o a d i n g c r i t er i a is i n a c c o r d a n c e w i t h t h e 2 0 2 2 C a l i f o r n i a B u i l d i n g C o d e , i n c l u d i n g p r o v i s i o n s a l l o w i n g e x i s t i n g s t r u c t u r e s to n o t r e q u i r e s t r e n g t h e n i n g if t h e n e w l o a d s d o n o t e x c e e d e x i s t i n g d e s i g n l o a d s b y 1 0 5 % f o r g r a v i t y e l e m e n t s a n d 1 1 0 % f o r s e i s m i c e l e m e n t s . T h i s a n a l y s i s i n d i c a t e s t h a t t h e e x i s t i n g f r a m i n g wil l s u p p o r t t h e a d d i t i o n a l p a n e l l o a d i n g w i t h o u t d a m a g e , i f i n s t al l ed c o rrec tl y . 1646 E Washington Ave03/28/23