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Home My WebLink Abouthood-requirement-worksheet-ada Ronald Browder Director 1131 Harbor Bay Parkway, Alameda, CA 94502 | Health.AlamedaCountyCA.gov/ACEHD | (510) 567-6700 Requirements For Ventilation Hood Plans Submit at least one set of plans. After review and revisions, three sets must be submitted for approval and stamping. Plans are to be drawn to ¼ inch per foot scale, containing but not limited to the following: • Hood Worksheet • Plan View: o Outline of exhaust hood over cooking equipment o Clearances around equipment & to walls o Exhaust & make-up air fans on roof o Exhaust & make-up air ducts with details to the fans on the roof o Make-up air diffusers on ceiling o Make & model numbers of equipment & fans o All dimensions of equipment & ducts • Front & side elevations showing: o Cooking equipment o Exhaust Hood overhang o Duct elbows and fans • Type & gauge of metal used in exhaust hood & ducts • Specify if exhaust hood is Type I, Type II, Listed, non-canopy, compensating, etc. • Name, address & phone number of facility & exhaust hood designer • Submit one set of manufacturer’s speciﬁcation sheets for: Cooking Equipment, Exhaust & Make- up air fans with performance charts, Listing card • Plans must conform to the California Mechanical Code • Air Balance Schedule • Submit an Air Balance Report before Final Inspection Ronald Browder Director Page 1 of 2 Hood Worksheet Facility Name: __________________________________________________ Date: _______________________ Site Address: ________________________________________________________________________________ Submitted by: _____________________________________________ Phone Number: ___________________ Fill in cooking equipment & hood dimensions in feet in the plan view below: Cooking Equipment & Exhaust Hood: What type of Exhaust Hood? ☐ Type I ☐ Type II ☐ Compensating ☐ Non-Compensating Are casters & quick disconnecting gas lines with restraining cables speciﬁed? ☐ Yes ☐ No Gas line exit wall at least 24” above ﬂoor speciﬁed? ☐ Yes ☐ No Exhaust Hood long enough to allow at least 6” from the inner rim on sides of equipment? ☐ Yes ☐ No Exhaust Hood wide enough to allow at least 6” in front & back of equipment? ☐ Yes ☐ No Canopy lip at least 6.5’ above ﬂoor & no more than 4’ above cooking surface? ☐ Yes ☐ No Are the Duct and Hood material in compliance with the California Mechanical Code? ☐ Yes ☐ No Exhaust Calculations: ☐ Backshelf ☐ Wall-mounted ☐ Single Island ☐ Double Island ☐ Pantleg ☐ Eyebrow Non-listed: Exhaust CFM = AIRFLOW x Length of Hood Hood Length ______ ft x Airﬂow ______ CFM/ft = __________ CFM (min) ____________ CFM (design) Listed Hood: Exhaust CFM = Listing card at Rated Temperature x Length of Hood Hood Length ______ ft x Listing Card ________ CFM/ft = ___________ CFM (min) ____________ CFM (design) Filters: Size: Usable Height ________ in. x Usable Width __________ in. = Usable Grease Filter Area __________ in² ______________ CFM (design) ÷ 360 FPM = ______________ ft² (filtered area needed) Usable Grease Filter Area _____________ in² ÷ 144 = _________________ ft² (filter area per filter) _____________ ft² (filter area needed) ÷ _____________ft² (filter area per filter) x ____________ # of Filters (actual) ____________ CFM (design) ÷ ____________ ft² (filter area per filter) x ___________ # of Filters (actual) = ____________ FPM Ideal FPM = 300; should be 250-350 (Listed Hoods can be above or below) ☐ Yes ☐ No ☐ N/A Horizontal Slot Filters ideal FPM = 1,000; should be between 800-1,200 ☐ Yes ☐ No ☐ N/A Total Width of ﬁlters must be less than the Exhaust Hood Length ☐ Yes ☐ No ☐ N/A Page 2 of 2 Duct: Square: Length __________ in. x Width __________ in. = ______________ in² Round: 3.14 in x ___________ Radius² = ________________ in² _______________ in² ÷ 144 = ____________________ ft² _______________ CFM (design) ÷ _________________ ft² = __________________ FPM Is the FPM between 500-2,500? ☐ Yes ☐ No Exhaust Hood greater than 12 feet long must have more than one outlet to main exhaust duct unless it is a Listed Hood. Is there more than one outlet to the main exhaust duct? ☐ Yes ☐ No ☐ Listed ☐N/A Static Pressure and Exhaust Fan: Number of elbows __________________ Is there a cleanout at each elbow? ☐ Yes ☐ No ☐ N/A Total System Static Pressure _____________________” sp Exhaust Fan: Manufacturer ____________________ Model Number _______________________ Horsepower ______________________ Exhaust Fan Pressure ________________________” sp Exhaust Fan ____________________ CFM Is the Exhaust Fan UL 762 speciﬁed for the Type I hood? ☐ Yes ☐ No ☐ N/A Does the Exhaust Fan CFM pull at the Total System Static Pressure? ☐ Yes ☐ No Make Up Air: ______________ CFM ÷ 2,000 CFM = ______________ # of Diffusers (Min) ______________ # of Diffusers (Actual) Make-up Air Static Pressure ___________________” sp Make-up Air Fan: Manufacturer __________________________ Model Number ___________________________ Horsepower _________________________ Is the Make-up Air 90-100% of exhaust CFM at the sp? ☐ Yes ☐ No Is the Make-up Air intake on roof at least 100 ft from exhaust? ☐ Yes ☐ No Are the diffusers on the ceiling at least 5 ft from the edge of the exhaust hood? ☐ Yes ☐ No ☐ N/A Are the Exhaust and Make-up Air fans interlocked? ☐ Yes ☐ No Submitted by: _____________________________________ Phone Number: ___________________________ Prepared by: ______________________________________ Phone Number: ___________________________