| Date |
Text |
| 2021-04-14 17:19:40 | PLAN REVIEW COMMENTS |
| | |
| | 6TH REVIEW: FBC FIFTH EDITION (2014) |
| | ROBERT MCDOUGAL, CBO |
| | COMMERCIAL COMBINATION PLANS EXAMINER |
| | (561) 805-6714 |
| | [email protected] |
| | |
| | THE SUBMITTALS HAVE BEEN DENIED BY BUILDING |
| | PLEASE ADDRESS THE ITEMS NOTED BELOW: |
| | |
| | 1) THE CALCULATIONS FROM WILLIAM RAIOLA, P.E. THAT WERE |
| | SUBMITTED, STATE THAT PER FBC AND ASCE7-10 WIND |
| | PRESSURES MAY BE INTERPOLATED BETWEEN ZONES. I |
| | DISCUSSED THIS WITH THE BUILDING OFFICIAL ROBERT BROWN |
| | AND WE ARE AWARE THAT THE FBC BUILDING (FIGURE 1609A, |
| | NOTE 2) ALLOWS INTERPOLATION BETWEEN ZONES ON THE WIND |
| | SPEED MAPS, BUT WE DO NOT KNOW OF ANY PROVISION IN THE |
| | CODE THAT ALLOWS FOR INTERPOLATION OF THE COMPONENT AND |
| | CLADDING PRESSURES BETWEEN THE WALL ZONES OF A |
| | BUILDING. PLEASE PROVIDE THE CODE SECTION FROM THE FBC |
| | OR THE SECTION FROM ASCE 7-10 THAT SPECIFICALLY ALLOWS |
| | THE INTERPOLATION OF COMPONENT AND CLADDING PRESSURES. |
| | WHEN YOU HAVE PROVIDED THE SECTIONS THAT YOU ARE USING |
| | FOR YOUR INTERPOLATIONS AND CALCULATIONS, WE WILL |
| | RE-EVALUATE YOUR SUBMITTAL. HOWEVER, BASED ON THE |
| | SUBMITTAL WE AGREE THAT IF ANY PORTION OF THE WINDOW IS |
| | LOCATED IN WALL ZONE 5, THEN THE COMPONENT AND CLADDING |
| | PRESSURES OF ZONE 5 APPLY TO THE WINDOW. |
| | |
| | PREVIOUS COMMENTS: [ THE PREVIOUS COMMENTS HAVE NOT |
| | BEEN RESOLVED. AS STATED IN PREVIOUS COMMENT #1, |
| | RATIONAL ANALYSIS IS NOT ALLOWED TO BE USED TO INCREASE |
| | THE MAXIMUM DESIGN PRESSURES OF A TESTED ASSEMBLY. THE |
| | WINDOW SYSTEMS HAVE BEEN TESTED AND THEN SAFETY FACTORS |
| | ARE APPLIED PER FBC 1710. |
| | |
| | 1) NOT RESOLVED. ALL OF THE PREVIOUS COMMENTS HAVE BEEN |
| | ADDRESSED WITH ONE EXCEPTION. THE RATIONAL ANALYSIS |
| | CALCULATIONS THAT WERE SUBMITTED FOR THE 24" X 24" ES |
| | 1500 FIXED WINDOWS IN ZONE 5 ARE INCORRECT. RATIONAL |
| | ANALYSIS CAN NOT BE USED TO INCREASE THE WIND LOAD |
| | PRESSURES FOR A TESTED ASSEMBLY. THE NEGATIVE AND |
| | POSITIVE PRESSURES OF +70, -90 PSF LISTED IN PRODUCT |
| | APPROVAL ARE BASED ON THE TESTING AND SAFETY FACTORS AS |
| | REQUIRED BY THE 2014 FBC SECTION 1710.5. |
| | |
| | A) THE WIND LOAD PRESSURES ON SHEET S.04 IN THE TABLE |
| | FOR AN EFFECTIVE WIND AREA LESS THAN 10 SQFT IN WALL |
| | ZONE 5A IS +90.3 PSF, -165.9 PSF. NOTE #5 STATES THAT |
| | THE VALUES IN THE TABLE ARE ULTIMATE AND CAN BE |
| | MULTIPLIED BY 0.6 TO DETERMINE SERVICE LOADS OR ASD. |
| | AFTER THESE PRESSURES ARE MULTIPLIED BY 0.6, THE |
| | REQUIRED WINDOW DESIGN PRESSURES ARE +54.3 PSF AND |
| | -99.54 PSF. SINCE THE MAXIMUM NEGATIVE DESIGN PRESSURE |
| | FOR THE (2' X 2') FIXED WINDOWS IN NOA NO. 17-1114.10 |
| | IS -90 PSF, THEY DO NOT MEET THE REQUIRED PRESSURE. |
| | |
| | B) THE CALCULATIONS ARE BASED ON PART OF THE WINDOWS |
| | BEING LOCATED IN WALL PRESSURES ZONE 4. HOWEVER, IF ANY |
| | PORTION OF THE WINDOW IS LOCATED IN WALL ZONE 5, THEN |
| | THE ENTIRE WINDOW IS EVALUATED TO THE GREATER PRESSURES |
| | OF ZONE 5. |
| | |
| | 2) WHEN RESUBMITTING, IT IS HELPFUL TO PROVIDE A |
| | RESPONSE LETTER ADDRESSING EACH ITEM ALONG WITH THE |
| | CITY RE-SUBMITTAL FORM. ] |
