The URL can be used to link to this page

Home My WebLink AboutCB ENGINEERING PAPERWORKC13 Engineering Services, INC. 200 NE 12 Avenue, Unit 6D, Hallandale Beach, FL. 33009 Phone: 954-534-1612 Email: cbbortes(a)-Qmail.com To: Fort Pierce Building and Code Regulation Division 2300 Virginia Avenue Fort Pierce, FL 34982 Re: Wind Load -Pressure Computation 10208 Isles of Pine Court Port Saint Lucie, FL =RECEIVED Pursuant to the request of the Stuart Roofing I, the undersigned have performed a wind pressure analysis for the roof as per ASCE 7-16, in order to determine the most critical values at above - mentioned location Wind Load -Pressure Computation Results are as follows: Roof Field 25.62 psf-52.32 psf REVIEWED FOR Roof Perimeter 25.62 psf -63.72 psf Roof Corners 46.98 psf-116.38 psf CODE COMPLIANCE ST. LUCIE COUNTY BOCC Attached are the calculation results using MecaWind v2323 per ASCE 7-16 software, Design Method with a load factor of 1. Should you have any questions regarding the above, or if require additional information, please do not hesitate to contact this office. "Engineer seal is valid for pages 1 through 2". Sincerely, CB Engineering Services, INC. (CA # 30935) Signed by: Constantin Bortes M.S., P.E. Florida P.E. # 77915 Date: April 17, 2019 Pagel OF 2 MecaWind v2323 inr., www.meca.biz, Calculations Prepared by: Calculations Prepared For: Client: STUART ROOFING Date: Apr 17, 2019 Project S: 41719 Designer: CB Engineering Services Inc Location: 10208 Isles of Pines Or. Port Saint Lucie, FL Description: Wind load pressure calculation Basic Wind Parameters Wind Load Standard - ASCE 7-16 Exposure Category = C Wind Design Speed - 170.0 mph Risk Category = II Structure Type - Building Building Type = Enclosed Building Inputs Roof Type: Building Roof Type = Hipped Hipped = W Width Perp to Ridge = 35.000 ft L Length Along Ridge = 30.000 ft EHt Eave Height = 8.000 ft Hip Ridge Hipped Length = 15.000 ft RE Roof Entry Method - Slope Slope Slope of Roof = 6.0 :12 OH Specify Roof to Wall intersection and Overhang= None Theta Roof Slope 26.57 Deg Par Is there a Parapet = False OR ALL : None = 0.000 ft Components and Cladding (C6C) Calculations per Ch 30 Part 1: h = Mean Roof Height above grade = 12.375 ft Kh = Z < 15 ft [4.572 m]--> (2.01 * (15/zg)^(2/Alpha) (Table 26.10-11= 0.849 Kzt Topographic Factor is 1 since no Topographic feature specified = 1.000 Kd = Wind Directionality Factor per Table 26.6-1 = 0.85 GCPi Ref Table 26.13-1 for Enclosed Building = +/-0.18 LF = Load Factor based upon STRENGTH Design = 1.00 qh = (0.00256 * Kh * Kzt * Kd * Ke * V^2) * LF = 53.38 psf LHD = Least Horizontal Dimension: Min(B, L) = 30.000 ft al = Min(0.1 * LHD, 0.4 * h = 3.000 ft a = Max(al, 0.04 * LHD, 3 ft (0.9 m]) = 3.000 ft h/B = Ratio of mean roof height to least her dim: h / B = 0.413 Wind Pressures for C6C Ch 30 Pt 1 All wind pressures include a load factor of 1.0 Description Zone Width Span Area 1/3 Ref GCp GCp p p Rule Fig Max Min Max Min ft ft ft sq ft psf psf RCOF FIELD 1 7.500 24.000 192.00 Yes 30.3-2G 0.300 -0.800 25.62 -52.32 ROOF PERIMETER 2r 3.000 24.000 192.00 Yes 30.3-2G 0.300 -1.014 25.62 -63.72 ROOF CORNERS 3 3.000 3.000 9.00 No 30.3-2G 0.700 -2.000 46.98-116.38 Area - Span Length x Effective Width 1/3 Rule - Effective width need not be less than 1/3 of the span length GCp = External Pressure Coefficients taken from Figures 30.3-1 through 30.3-7 p = Wind Pressure: qh*(GCp - GCpi) [Eqn 30.3-1]* *Per Para 30.2.2 the Minimum Pressure for CSC is 16.00 psf [0.766 kPa] (Includes LF) Page2 OF 2 CB Engineering Services, INC. Ei 200 NE 12 Avenue, Unit 6D, Hallandale, FL 33009 Phone: 954-534-1612 Email: cbbortes@gmail.com To: Fort Pierce Building and Code Regulation Division Client: Stuart Roofing Re: Miami -Dade County HVHZ Electronic Roof Permit Form Section E (Tile Calculations) Method 1 "Moment Based Tile Calculations per RAS 127" Location: 10208 Isles of Pines Court Port Saint Lucie, FL I, the undersigned, perform the Tile Calculation according with Miami Dade County HVHZ requirements using Method 1 "Moment Base Tile Calculation per RAS 127" Conservative Design Wind Uplift Pressures using MecaWind v2323: PI in Roof Field Area = 52.32 psf P2 in Roof Perimeter Area = 63.72 psf P3 in Roof Corners Area = 116.38 psf Calculation Results Shows the Minimum Resisting Moment for the location mentioned above to be: (calculation sheet is attached to complete the report) RESULTS Mr1 in Roof Field Area = 9.32 ft-Ibf 5 NOA Mf 45.00 ft-Ibf PASS Mr2 in Roof Perimeter Area = 12.91 ft-Ibf 5 NOA Mf 45.00 ft-Ibf PASS Mr3 in Roof Corners Area = 29.50 ft-Ibf 5 NOA Mf 45.00 ft-Ibf PASS Installation Recommendation From FL#28328 Aerodynamic Multipliers 0.315 cuft Restoring Moments due to Gravity Mg= 7.16 ft-Ibf For Slope Adhesive Set System Mf = 45.00 ft-Ibf Total Mf= 45.00 ft-Ibf Pagel OF 2 CB Engineering Services, INC. 200 NE 12 Avenue, Unit 6D, Hallandale, FL 33009 Ei Phone: 954-534-1612 Email: cbbortes@gmail.com If the Tiles will be attached on the Direct Deck (min 15/32" plywood) with DAP Foam Inc Touch N Seal Storm Bond 2 Two Component NOA 17-0829.12 (1) one Paddy with Average Paddy Weight of 24 grams, the tiles will meet the RAS 127, Current Miami Dade County HVHZ and 2017 Florida Building Code Requirements. "Engineer seal is valid for pages 1 through 2". Should you have any questions regarding the above, or if require additional information, please do not hesitate to contact this office. Sincerely, CB Engineering Services, INC. (CA # 30935) Signed by: Constantin Bortes M.S., P.E. Florida P.E. # 77915 Date: 4/17/2019 Paget OF 2 2.06 Eave Closure --CHOOSE ONE of the following: A. Prefabricated EPDM synthetic rubber conforming to ASTM D 1056. B. Prefabricated metal eave closure must contain minimum'/8 in. diam- eter weepholes, spaced not more than 12 in. apart, flush with the underlayment. C. Prefabricated concrete or clay eave closure. D. Mortar (color optional) on granu- lar surface underlayments only. E. ' Antiponding drip edge. REVIEWF--� FOR CODE COMOLIARCE ST. LUCIE COUNTY BOCCanchor/base sheet a minimum of 4 in. up vertical surfaces. Anchor/base sheet end laps shall be a minimum of 6 in. and head laps shall be a minimum of 4 in. Over installed an- chor/base sheet, apply one layer of mineral surfaced cap sheet ASTM D6380M in full 25lb./sq, ±15 percent mopping of asphalt. End laps shall be a minimum of 6 in.; head laps shall be a minimum of 3 in. and back nailed 12 in. on center with approved nails through tincaps or by Miami -Dade listed prefacbricated fasteners in accordance with Florida Building Code, Building 1517.5.1 and 1517.5.2. 2.07 Sheathing Material shall conform to NOTE #3: The above system may be up- APA rated sheathing, in compliance graded by hot mopping an of ASTM listed ftber- with Chapter 23 (High -Velocity Hurri- glass or perforated organic felt glass cane .Zones) of the Florida Building anchor sheet before to the a Code, Building. plying the cap sheet. Asphalt application shall be per above A. Battens -material to be decay re- specifications. sistant species or pressure treated in compliance with AWPA LP-2 B. Hot Applied Product Ap- or better. proved Underlayment System (see Drawing 1). An an - PART III - EXECUTION chor/base sheet shall be me- chanically attached to the wood deck (unless directed 3.01 Underlayment Applications - CHOOSE otherwise by Product Ap- ONE of the following: proval) with approved fasten- ers spaced in a 12 in. grid staggered in rows in the NOTE #2: Anchor/base sheet shall have a n. on center at the field, and 6 in. minimum of two plies in the val- laps or as specified in the leys. Cap -sheets for mortar set underlayment manufacturer's systems shall be mineral surfaced. Product Approval. An - A No. 30 or No. 43 can be used as chor/base sheet end laps shall a dry -in prior to installing the be a minimum of 6 in. and head underlayment with this system. laps shall be a minimum of 4 in. Over installed anchor/base A. t p 0190, t o 49/ sheet, apply one layer of cap ee rawmg No. 30 or No sheet in a full 25# /sq. ±15 per- 43 anchor/base sheet ASTM cent mopping of asphalt. End D226, Type II, or ASTM D2626 laps shall be a minimum of 6 a ca t in. on center; head laps shall be tEz r o01 i t P 0 ed - a minimum of 3 in. and Ceti s aced , a in. grid s backnailed 12 in. on center erP i e row i to d with approved nails through Extend tincaps or by prefabricated fas- (RAS) 120.4 FLORIDA BUILDING CODE -TEST PROTOCOLS FOR HVHZ, 6th EDITION (2017) (RAS) No. 120 tenets in accordance with Florida Building Code, Building 1517.5.1 and 1517.5.2. C. Cold Applied Product Approved Underlayment System (see Drawing 1). An anchor [base sheet shall be mechanically attached to the wood deck with approved fas- teners spaced in a 12 in. grid stag- gered in two rows in the field and 6 in. on center at the laps or as speci- fied in the underlayment manufac- turers Product Approval. Anchorlbase sheet end laps shall be a minimum of 6 in. and head laps shall be a minimum of 4 in. Over anchor/base sheet, apply one layer of cap sheet in a continuous layer of cold process adhesive at the rate of 1.5 gallons per 100 square feet or at the rate if so stated in the Product Approval. Adhesive shall be applied uni- formly in accordance with Prod- uct Approval with a squeegee or knotted brush. Cap sheet side laps shall be a minimum of 6 in.; head laps shall be a minimum of 3 in. and backnailed 12 in. on center with approved nails through tincaps or by prefabricated fasten- ers in accordance with Florida Building Code, Building 1517.5.1 and 1517.5.2. D. Product Approved Anchor/Base Sheet/Self- Adhered Underlayment System. The roof cover is terminated at approved metal flashings. Any approved an- chor/base sheet as listed in the Product Approval shall be me- chanically attached to the wood deck with approved fasteners spaced in a 12 in. grid staggered in twoOws in the field and 6 in. on center at the laps or as specified in the underlayment manufacturers Product Approval. Anchorlbase sheet end laps shall be a minimum of 6 in. and head laps shall be a minimum of 4 in. Over anchor /base sheet, apply one layer of any Product approved, self -adhered underlayment in compliance with the self -adhered underlayment manufacturers' Approval/Re- quirements. E. Self -Adhered Underlayment (Single Ply). A single -ply underlayment system utilizing any Product approved self -ad- hered underlayment. The roof cover is terminated at ap- proved metal flashings. Apply one layer of any self -adhered underlayment in compliance with the underlayment manu- facturers' approved/require- ments. 3.02 Drip Edge Metal - CHOOSE ONE of the following: 11/4' RING NAILS ® 4' DRAWING 1 TYPICAL 30/90 HOT MAP DRAWING 2 DRIP EDGE INSTALLATION NOTE #4: Drip edge deck flange shall be primed with ASTM D41 as- phalt primer. A. Two-ply underlayment sys- tems (see Drawing 2). FLORIDA BUILDING CODE —TEST PROTOCOLS FOR HVHZ, 6th EDITION (2017) (RAS) 120.5