Loading...
HomeMy WebLinkAboutREVISION 4-27-18_ .. 'all MIN pop - Planning & Development Services Department SCOPE OF WORK Planning & Development Services Department ® I , Building & Regulations Division Building & Code Regulations Division CONSTRUCT NEW CARPORT &REAR ADDITION PER PLANS AS SHOWN o 2300 Virginia Avenue, Fort Pierce, FL 34982 - (772) 462-1553 Product Review Affidavit THIS IS AN ALTERATION LEVEL 2 AND MUST COMPLY WIT14 THE FBC 2017 FOR �`• Certification for Design Load Compliance BELANGER ADDITION Building Permit # Owners Name Applicant: EXISTING BUILDINGS.- Project Name: BELANGER ADDITION Project Address: 64 AQUA RA DR. Product Opening Design Prod ict Rated Manufacturer Model Number Product Approval Glass Method of Attachment NOTES: - Pressures Deshii i Pressure Number Type 1) THE CONTRACTOR, SUBCONTRACTOR, SUPPLIER, ECT. SHALL VERIFY ALL Permit #: Occupancy Type: R Construction Type: V windows SEE ELEVS. +E 0/-70 P.G.T. HR-510 NOA# 15-0612.14 IMPACT # 10X 1 3/8" MIN. EMBED SCREWS AT 4° / 15" O.C. MAX DIMENSIONS, CONDITIONS AT JOB SITE, PLANS, SPECIFICATIONS, ECT. 2) STRUCTURAL FEATURES NOT DETAILED ON THESE PLANS WILL BE INSTRUCTIONS FOR USE: Mullions N/A ADDRESSED BY THE ENGINEER AS CONSTRUCTION PROGRESSES. 3) ALL WRITTEN DIMENSIONS ON THESE DRAWINGS TAKE PRECEDENCE OVER • This certification must be completed, signed, and sealed by the design professional of record. Fixed Glass SCALED DIMENSIONS. • Submit (2) copies for residential, (3) copies for commercial with all permit applications involving the, following: Block Glass 4) ALL CONSTRUCTION MUST COMPLY WITH THE FLORIDA BUILDING CODE .. (FBC) 2017•, FBC 2017 RESIDENTIAL, FBC 2017 PLUMBING CODE, FBC 2011 o New Residences (single or multi -family) Skylights MECHANICAL CODE, FBC 2017 ENERGY CONSERVATION, AND THE NEC (NFPA o Residential Addition Sliding Glass Doors SEE ELEVS. /-60 P.G.T. SGD-770 NOA# 16-0629.06 IMPACT #12X 1 1/4" MIN. EMBED SCREWS AT 3" / 14" O.C. MAX 70) 2014 EDITION. o Any accessory structure requiring a building permit N/A 5) RESIDENCE LOCATED IN NEGLIGIBLE WEATHERING AREA, AND IN VERY HEAVY ,� °"+CANNA:,.' o Any non-residential structure. Swin T e Doors \ TERMITE INFESTATION AREA PER FRC 301. * Note: Form not required for interior renovations provided that no exterior structural elements are affected and French Doors \\1 6) ALL ADDITIONS, REPAIRS, AND ALTERATIONS MUST COMPLY WITH THE F.B.0 �� tn� �� 2017FOR EXISTING BUILDINGS. •te I� 1Lucie COUI11� certain minor building permits at the discretion of the local building official. Contact the #above for questions. tiara a Doors DESIGN PARAMETERS AND ASSUMPTI C NS USED: com mete all that apply) Hurricane Protection 1. DESIGN CODE: Florida B"din Code 201�Edi on with 2017---Supplements using ASCE 7-10 Roof Ventilation FILE ��2. Structure Designed as (check one): EnclosPartially Enclosed Open Roofing Material Z (p t"VOLT 1 iP5 VU T 194 OWENS CORNING OAKRIDGE FL# 10674.1 N/A SHINGLE FASTENERS PER DETAIL ON PLAN (6 PER 3 TAB) '""""3. Risk Category: _I X II Ill— IV Exposure Category: _B C X D 4. Design Wind Velocity 165 mph 128 ASO N/A LRFD End Zone Width:^ 5 ft Revised 07/22/2014 S. Mean Roof Height: 15 ft Roof Pitch: 3 :12 Parapet: N/A ft 6. Components & Cladding Design Pressures Used: (PSF, based on 10sgft @ 15'MRH, clearly label on all plan openings): �� t'Llioj 25.0 25.0 25.0 43.3 43.3 N/A I have reviewed the above components or cladding and I have approved their use in this structure. These products provide adequate resistance to the Zone 1: Zone 2: Zone 3: Zone 4: Zone 5: Garage: V -39.7 -69.0 -102.1 -47.0 -58.0 N/A wind loads and Forces specified by cur ent code provisions. I � � � © ST.LUCTR COUNTY BUILeE SION 7. Design Loads: Floor: 40 PSF Roof/Dead: 5 PSF Roof/Live: 20 Balcony:. N/A PSF DN..,�DyPa�eerrnmw.,..., PAUL WELCH P.E. PA WE P. °" °""°"C""" °°° REVENVEDFoxco,Y� Die: io�ieo�ia�se o�ia�0000m. °=ua LCH P.E. N/A PLF/CONCENTRATED Name: Signature: °b�hG1D REVIEy1 D Y Dock: N/A PSF Deck: N/A PSF Stairs: N/A PSF Fence: N/A PSF Railings: __ea'_ !o" L b" DATE Z7 1 B. Were Shear Walls Considered For Structure? X Yes _NotApplicable Explain Why Not: PAUL WELCH IN . 29945 ON PLANS PLANSANDPRMITMUSTBEKEPTONJOB Desi n Prof: Cert. No. Date: g �' k O DMADE.MADE.. R O INSPECTION N A'SP ON WILL DE 9 Is A Coqtfti:qas.Loacl Path Provided? X Yes Not Applicable Explain Why Not: 10 Design Soil Bearing Pressure: _*Low PS oil Test Reports Submitted? _Yes \ �3 L"-a�`i`aN51bIJ FCr:•6 Aayn✓&r. DE51GNPROFESSIONA'LCEMTMr T EMENT: CONCEALEDFASTENERSORATTACHMENTS i I certify that to the best of m knowledge and belief, the attached plans & specifications have been designed to E>d - ARE THE RESPONSIBILITY OF THE / fy Y g comply with the applicable structural portions of the building codes currently adopted and enforced by St. Lucie "'-"` "—u CONTRACTOR OF RECORD ct �� County. I also certify that structural elements depicted on these plans provide adequate resistance to the design I �e CP \ gL THESE PLANS AND ALL PROPOSED WORK forces specified: Paul Welch P.E. _ 29945 / 5115 �'1'INDOW � DOOR SCHEDULE �yi�T �Epeiz>tJ1 Print Name Cert # & Co. Cert Auth. MARK SIZE / TYPE - I�XIhT. L IV N(a ie� - ARE SUBJECT TO ANY CORRECTIONS Paul Welch Inc. REOUIRED BY FIELD INSPECTORS THAT 1 5�" WIDE X 49" HIGH HORZ. ROLLER WINDOW ON PLAN 8/15/2017 2 72" WIDE X 80" HIGH SLIDING CLASS DOOR MAY BE NECESSARY IN ORDER TO Signature, Date, and Seal 1984 S.W. Biltmore St. Suite #114 Port St. Lucie, FL 3 72" WIDE X 80" HIGH CASED OPENING COMPLY WITH ALL APPLICABLE CODES. Company Name & Address 4 140" WIDE X 80" HIGH CASED OPENING P Y 5 DBL 24" WIDE X 80" HIGH SLIDING BARN DOOR ` E EXISTING WINDOW OR DOOR ° �;�157iwt(- r IlIA'jGtl ��lg'1•Ia1C. �Ddh" LsCis"f• `"' Pare.G 4— �fJ LGa Y'IN I bli ---. Ct: Ol VI itlii7. vqe, I y�rw5 T PaESfOC+iVGii; Ir PEE l � I.. N' (a1 IM 11. vql IJ 8x�1 To f5XI Iry x l Fla a r 461 4)�tlrJ 2r=IG� , a 1 uin h 11rJIiH1 ( oqulsr e- - I F1C�oru pmaa'�a �Idcs q "I % NeK E FP 4-4 A,601/0r 4� .-r' I '61 5) F— LL E y — (t."./ IV VOT, AdouG WAU -51LM bI--(AIL ",A`t TABULATION EXIST. LIVING 1,176 Sq. Ft. NEW LIVING 262 Sq. Ft. CARPORT 480 Sq. Ft. Sq. Ft, TOTAL 1,438 Sq. Ft. Now SIIEFT NUIdfJER PAUL• WELCH INC. (IF MECHANICAL ELECTRICAL CIVIL ENGINEERING f984S.W, p/LTMOREST- SUITE# 114 PORTST, LUCIE, FL 34984 PHOIV E' (772) 785-9888 E-MAIL PWHLCHINCOAOL - `- ' PAUL WELCH, P.E. FLA REG NO.29945 APR 18 2018 APR 18 201 9T, Lldcie 6gunty, Permitting r I� STRUCTURAL NOTES �1) 'DESIGN LOADS IN ACCORDANCE WITH,�SC'E7-.10. ,/t�2)_SOIL BEARING CAPACITY: 206OPSF (MIN.). `r 3) UM 2500 PSI COMPRESSIVE STRENGTH AT 28 DAYS. SEE PLAN FOR SIZES & STEEL REQUIREMENTS. 4) MINIMUM CONCRETE PROTECTION FOR REINFORCING BARS: FOOTINGS: 3" BEAMS: I%" SUSPENDED SLABS: I%" 5) ALL LUMBER IN CONTACT WITH CONCRETE OR MASONRY SHALL BE PRESSURE TREATED. 6) SPLITING OR CRACKING OF STRUCTURAL COMPONENTS DUE TO INSTALATION OF HARDWARE IS NOT PERMITED. 7) UNLESS OTHERWISE NOTED, THE INSTALLATION OF SPECIFIED HARDWARE SHALL CONFORM TO THE MANUFACTURES INSTRUCTIONS AND STANDARD P'RACTICIES. 8) UNLESS OTHERWISE NOTED, ROOF SHEATHING TO BE NAILED WITH 8d RING - SHANK NAILS AT 4" O.C. PERIMETER AND 6" O.C. FIELD. 9) UNLESS OTHERWISE NOTED FOR EXTERIOR WALLS; EXTERIOR PLYWOOD SHEATHING AND INTERIOR DRYWALL IS TO BE NAILED WITH 10d OR BETTER NAILS 6" O.C. EDGES, AND 6" O.C. FIELD, OR SCREWED WITH DRYWALL SCREWS 1.5" LONG AND 0.131 DIA. 10) STUCCO CEILINGS AND SOFFIT NOTE: EXTERIOR CEILING AND SOFFIT TO BE STUCCO OVER WIRELATH W/ 11GA. 2" NAILS W/ 3/8"'0 HEAD @ 6" O.C. OVER 3/8" METAL RIB LATH @ 6" O.C. W/ (2 LAYERSOF 15# FELT OVER EACH FRAMING MEMBER). 11) EXTERIOR FRAME WALLS TO BE STUCCO OVER WIRELATH WITH 11 GA. 2" LONG NAILS WITH 318" 0 HEAD @ 6" O.C. OVER (2) LAYERS OF (15# FELT OR TYVAK BUILDING WRAP) OVER 19/32" CDX PLYWOOD WITH lOD NAILS TO STUDS @ 6" O.C. PERIMETER AND FIELD. 12) WEEP SCREEDS. A MINIMUM 0.019-INCH (0.48 MM) (NO.26 GALVANIZED SHEET GAGE), CORROSION -RESISTANT WEEP SCREED WITH A MINIMUM VERTICAL ATTACHMENT FLANGE OF 3'/2 INCHES (89 MM) SHALL BE PROVIDED AT OR BELOW THE FOUNDATION PLATE LINE ON EXTERIOR STUD WALLS IN ACCORDANCE WITH ASTM C 926. THE WEEP SCREED SHALL BE PLACED A MINIMUM OF 4 INCHES (102 MM) ABOVE THE EARTHOR 2 INCHES (51 MM) ABOVE PAVED AREAS AND BE OF A TYPE THAT WILL ALLOW TRAPPED WATER TO DRAIN TO THE EXTERIOR OF THE BUILDING. THE WATER -RESISTIVE BARRIER SHALL LAP THE ATTACHMENT FLANGE. THE EXTERIOR LATH SHALL COVER AND TERMINATE ON THE ATTACHMENT FLANGE OF THE WEEP SCREED, - -f r- .l.- �..►J 4arye-, i� � WALL F1 NISH / INSULATI N NOTES 1) INTERIOR TO BE%" DRYWALL FINISH. 2) AL INTERIOR GYPSUM BOARD TO BE MIN.''/2" THICK WITH (13 GAGE, 13/8" LO G,19/64" HEAD; 0.098" DIAMETER,1 '/a" LONG, ANNULAR -RINGED; 5D COLER NAIL, 0.086" DIAMETER, 1 5/8" LONG, 15/64" HEAD; OR GYPSUM BOARD NA L, 0.086" DIAMETER, 1 5/8" LONG, 9/32" HEAD) SPACED AT 7" O.C. FOR NAILS A 12" O.C. FOR SCREWS. 3) WA. LL AND CEILING FINISHES SHALL HAVE A SMOKE -DEVELOPED INDEX OF NO F GREATER THAN 450. 4) WA, LL AND CEILING FINISHES SHALL HAVE A FLAME -SPREAD CL SSIFICATION OF NOT GREATER THAN 200. 5) ALI I EXPOSED INSULATION MATERIALS INSTALLED ON ATTIC FLOORS SHALL HA VE A CRITICAL RADIANT FLUX NOT LESS THAN 0.12 WATT PER SQUARE CE iTIMETER. EXPOSED FOAM PLASTIC INSULATION MATERIALS EXPOSED TO TH L UNDERSIDE OF THE ROOF DECK OR ON THE ATTIC WALLS SHALL CO WPLY WITH SECTION FRC316. 6) PEI t FRC 702.2.1 ALL GYPSUM BOARD MATERIALS AND ACCESSORIES SHALL CONFORM TO ASTM C 36, C 79, C 475, C 514, C 630, C 931, C 960, C 1002, C 1047, C 117 7, C 1178, C 1278, C 1395, C 1396 OR C 1658 AND SHALL BE INSTALLED IN ACCORDANCE WITH THE PROVISIONS OF FRC, AND ADHESIVES FOR THE IM TALLATION OF GYPSUM BOARD SHALL CONFORM TO ASTM C 557 7) IM ULATION MATERIALS, INCLUDING FACINGS, SUCH AS VAPOR ]RETARDERS OR VAPOR PERMEABLE MEMBRANES INSTALLED WITHIN FLOOR -CEILING ASSEMBLIES, ROOF -CEILING ASSEMBLIES, WALL ASSEMBLIES, CRAWL SP. CES AND ATTICS SHALL HAVE A FLAME SPREAD INDEX NOT TO EXCEED 25 WI H AN ACCOMPANYING SMOKE -DEVELOPED INDEX NOT TO EXCEED 45 W N TESTED IN ACCORDANCE WITH ASTM E 84 OR UL 72.1 ENERGYCONSERVATION NOTES 5 1) RE IDENCE SHALL BE IN ACCORDANCE WITH FLORIDA BUILDING ODE 2017 EN � RGY CONSERVATION RESIDENTIAL. 2) AT IC ACCESS DOORS OR HATCHES FROM CONDITIOND SPACES 'TO UN ONDITIONED SPACES SHALL BE WEATHERSTRIPPED AND INSULA F - Te A IEVEL EQUIVALENT TO THE INSULATION ON THE SURROUNDING SU FACES, A WOOD FRAMED OR EQUIVALENT BAFFLE OR RETAINER IS RE UIRED TO BE PROVIDED WHEN LOOSE FILL IS INSTALLED, TO PREVENT LO ISE FILL FROM SPILLING INTO THE LIVING SPACE. 3) T BUILDING THERMAL ENVELOPE SHALL BE CONSTRUCTED TO LIMIT AIR LEAKAGE IN ACCORDANCE WITH THE REQUIREMENTS R402.4.1 THROUGH R402.4.4. 4) THE BUILDING SHALL BE TESTED FOR AIR LEAKAGE IN ACCORDANCE WITH R4 2.4.1.2 5) WI DOWS, SKYLIGHTS, AND SLIDING GLASS DOORS SHALL HAVE AN AIR IN ILTRATION RATE OF NO MORE THAN 0.3 CFM PER SQUARE FT, AND SA INGING DOORS NO MORE THAN 0.5 CFM PER SQUARE FT AND MUST BE TE TED LISTED AND LABELED IN ACCORDANCE WITH R402.4.3. 6) C TRACTOR SHALL PROVIDE ENERGY PERFORMANCE LEVEL (EPL) DISPLAY CA ID IN ACCORDANCE WITH FBC 2014 ENERGY CONSERVATION R401.3. ,jam` erg orl' � 1 ECTRICAL NOTES _ 1) ALL ELECTRICAL W RK SHAL BE IN ACCORDANCE WITH THE NEC (NFPA 70) 201 #EDITION. 2) A MINIMUM OF 7500 OF THE LAMPS IN PERMANENTLY INSTALLED LIGHTING FIXTURES SHALL BE HIGH-EFFACY LAMPS OR A MINIMUM OF 75% OF THE PERMANENTLY INSTALLED LIGHTING FIXTURES SHALL CONTAIN ONLY HIGH-EFFACY LAMPS. (LOW VOLTAGE LIGHTING SHALL NOT BE REQUIRED TO BE HIGH-EFFACY LAMPS) 3) RECESSED LIGHTING SHALL BE SEALED TO LIMIT AIR LEAKAGE BETWEEN CONDITIONED AND UNCONDITIONED SPACES. 4) SMOKE DETECTORS TO BE 110V W/ BATTERY BACK UP - ARC FAULT CIRCUIT 5) SMOKE DETECTORS TO BE LOCATED AS SHOWN, AND INSIDE AND OUT IDE OF ALL EXISTING BEDROOM INTERIOR DOORS (NOT SHOWN) IF NOT EXISTING VERIFY. 6) SMOKE DETECTORS TO BE INTERCONNECTED SO THAT ONE SMOKE DETECTOR ACTIVATES ALL SMOKE DETECTORS IN THE RESIDENCE 7) PROVIDE BRANCH CIRCUIT ARC -FAULT PROTECTION FOR ALL CIRCUITS SERVING: FAMILY ROOMS, DINING ROOMS, LIVING ROOMS, PARLORS, LIBRARIES, DENS, BEDROOMS, SUNROOMS, RECREATION ROOMS, CLOS ETS, HALLWAYS, OR SIMILAR ROOMS PER FBC AND NEC REQUIREMENTS. 8) PROVIDE GROUND -FAULT CIRCUIT INTERRUPTER PROTECTION FORA L 125- VOLT, SINGLE-PHASE 15 AND 20 AMP CIRCUITS SREVING: BATHROOMS, GARAGES, KITCHENS, ACCESORY BUILDINGS, OUTDOORS, OR WITHIN2" OF EDGE OF ANY SINK. 9) CARBON MENCIXIDE DETECTORS TO BE INSTALLED WITHIN 10' OF ALL BEDROOMS. 10) PROVIDE TAMPER RESISTANT RECPTICLES PER NEC REQUIREMENTS. 11) TIE ELECTRICAL INTO EXISTING ELECTRICAL SERVICE. ELECTRICAL LOAD CALC'S PER NEC 1438 S.F. @ 3 VA 4314 VA TWO 20A APPLIANCE CKTS 3000 LAUNDRY 1500 DRYER 6000 RANGE 12000 WH 4500 DW 1200 WP TUB (OPTION) 1200 REFRIG 1200 IRR. PUMP (OPTION) 180D MISC 500D TOTAL 40714 VA FIRST 10 KW @ 100% 1000D REMAINDER (U7 40% 12285.6 TOTAL 22285.6 A/C HEAT (a) 100% 12000 TOTAL 34285.6 VA 34285.6 240 = 142.8567 AMPS USE EXISTING 200 AMP SERVICE FOUNDATION SCHEDULE F-1 18" YEP X "dWIDE 500 PSIyCONC TE MO &I C ry & FOOTINGeWl (3)- #AARS CCjN'T OUS �/ d F-2 8" EP 8" E (256 PSI)) CONC E NOIITHC NOT F OT1I W/fi#59SCNTUF-3 36" X 36" X 18" DEEP PAD FOOTING CENTERED AT POST W/ (5)- # 5 BARS EACH WAY EQUALLY SPACED F-4 18" DEEP X 16" WIDE (2500 PSI) CONCRETE MONOLITHIC FOOTING W/ (2)- #5 BARS CONTINUOUS S-1 4" THK (2500 PSI) CONCRETE SLAB W/ FIBERMESH OR 6"/ 6" 10/10 W WM OVER VAPOR BARRIER ON CLEAN COMPACTED CHEMICALLY TREATED FILL S-2 4" THK (2500 PSI) CONCRETE SLAB W/ FIBERMESH OR 67 6" 10/10 WWM OVER EXISTING CONCRETE SLAB B-1 45 BARS X 12" LONG DRILLED OUT & EPDXIED WITH 6" MINIMUM EMBEDMENT t6 24" O.C. ALL AREAS ADJACENT TO EXISTING FOUNDATION govto / 41-�jit CONCRETE FOUNDATION NOTES 1)SLAB / FOOTINGS TO BE CONCRETE WITH A MINIMUM 2500 PSI COMPRESSIVE STRENGTH AT 28 DAYS. SEE PLAN FOR SIZES & STEEL REQUIREMENTS. 2)MINIMUM CONCRETE PROTECTION FOR REINFORCING BARS: FOOTINGS: 3" SUBGRADE PREPERATION NOTES 1) THE AREA WITHIN THE LIMITS OF THE FOUNDATION SHALL HAVE ALL VEGETATION, TOP SOIL AND FOREIGN MATERIAL REMOVED. 2) CLEAN FILL SAND AND OR GRAVEL FILL, FREE OF VEGETATION AND FOREIGN MATERIAL, MUST BE PLACED TO DESIGN SUBGRADE LEVEL AND COMPACTED TO ASSURE UNIFORM SUPPORT OF THE FLOOR SLAB. 3) SUBGRADE COMPACTION SHALL BE ACHIEVED BY MEANS AND METHODS DETERMINED BY THE RESPONSIBLE CONTRACTOR. SOIL DENSITY TESTING BY INDEPENDENT SOILS TESTING FIRM SHALL BE REQUIRED TO INSURE PRESCRIBED SOIL DENSITIES ARE ACHIEVED. 4) AFTER FOOTING EXCAVATION, AND FORMING, CONTRACTOR SHALL RECOMPACT SUBGRADE SOILS USING SUITABLE VIBRATORY MECHANICAL COMPACTOR. THE UPPER 16 INCHES OF SOILS UNDERLAYING THE WALL FOOTINGS SHOULD HAVE A MINIMUM DENSITY OF 95% OF THE MAXIMUM DRY UNIT DENSITY AS DETERMINED BY MODIFIED PROCTOR METHOD FOR THE EXISTING SOILS, IN -PLACE SOIL DENSITY TESTS SHOULD BE PERFORMED IN ACCORDANCE WITH ASTM D-2922, AT A FREQUENCY DETERMINED BY THE SOIL TECHNICIAN TO VERIFY UNIFORMITY OF THE UNDERLYING SOIL DENSITY, PRIOR TO PLACING CONCRETE. J5) SUBBASE COMPACTION FOR THE FLOOR SLAB FILL MATERIAL SHALL BE UNIFORMLY COMPACTED TO A MINIMUM DENSITY EQUAL TO 95% OF THE MAXIMUM DRY UNIT DENSITY OF THE FILL AS DETERMINED BY MODIFIED PROCTOR METHOD IN ACCORDANCE WITH ASTM D-1557. 6) CONCRETE SLABS ON GRADE SHALL BE PLACED OVER A POLYETHYLENE VAPOR BARRIER WITH A MINIMUM THICKNESS OF 6 MILLS, INSTALLED WITH LAPPED JOINTS NOT LESS THAN 6 INCHES AND CONTINUOUSLY TAPPED WITH HIGH DENSITY POLYETHYLENE ADHESIVE TAPE. lsC/ Ii �y IVT WA U/ ATIf, JF'TlalJ 4l, L 4 SHEE/ETTj NUMBER PA UL WELCH INC, AIECHAN/CAL ELECTR/CAL CIVIL EJVG/NEE 1984S.W. BILTMORESr.. SUITE# II4 RECEIVED _4 PORTST. LUCIE, FL 34984. PHONE (772) 785-9888 E-MAIL PbYEL'CHINC0A L.C[' 1 8 Zoe$ FAAUL WELCH, P.E.- "REG.NO.29945 APR 1 � 20� 8 - sT. Lucie County, Per