| Date |
Text |
| 2008-12-19 14:26:29 | ****CORRECTIONS**** |
| | |
| | SAMANTHA HILL, BUILDING PLANS EXAMINER |
| | 561-805-6724 [email protected] |
| | |
| | FBC FLORIDA BUILDING CODE 2004 |
| | FBC EB FLORIDA BUILDING CODE 2004 EXISTING BUILDING |
| | CODE |
| | FBC R FLORIDA BUILDING CODE 2004 RESIDENTIAL |
| | FBC* CITY OF WEST PALM BEACH AMENDMENTS TO THE FBC2004 |
| | FAC FLORIDA ADMINISTRATIVE CODE |
| | FS FLORIDA STATUTE |
| | |
| | |
| | COMMENT FROM PREVIOUS LIST: |
| | |
| | 4. IF PULLOUT VALUE FOR #10 SCREW IS 109, WITH A SAFETY |
| | FACTOR OF 2, SHOULDN'T IT BE DIVIDED BY TWO RATHER THAN |
| | MULTIPLIED BY TWO? CAPACITY WITH STRESS INCREASE FROM |
| | CALCULATIONS PROVIDED IS 290; IT DOES NOT SEEM LOGICAL |
| | WHEN PRODUCT DATA STATES 109. THIS COMMENT ALSO APPLIES |
| | TO SHEAR FOR #10 AND PULLOUT AND SHEAR FOR #12. PLEASE |
| | EXPLAIN CALCULATION. |
| | |
| | 2ND ROOFTOP EQUIPMENT WIND LOAD CALC REVIEW: |
| | |
| | ALL COMMENTS WERE ADDRESSED EXCEPT FOR ITEM 4. PLEASE |
| | CONTACT ME TO EXPLAIN RATIONALE. IT APPEARS THAT THE |
| | CAPACITY OF THE SCRE HAS BEEN INCREASED BY 3/2 (109 |
| | PULLOUT TIMES 3/2). FOR A FACTOR OF SAFETY OF 2, |
| | SHOULDN'T IT BE MULTIPLIED BY 1/2, REDUCING IT BY HALF? |
| | IT APPEARS THAT THE SCREW CAPACITY HAS BEEN INCREASED |
| | BY 50%. |
| | |
| | DUE TO THE URGENCY OF GETTING THIS MATTER RESOLVED, |
| | PLEASE SUBMIT THE CALCULATIONS VIA EMAIL FOR |
| | PRELIMINARY REVIEW. PLEASE FEEL FREE TO CONTACT ME IF |
| | YOU DISAGREE WITH THE COMMENTS. |
| | |
| | 3RD ROOFTOP EQUIPMENT WIND LOAD CALC REVIEW: |
| | |
| | PER CONVERSATION WITH ENGINEER, THE SCREW HAS A 3.0 |
| | FACTOR OF SAFETY. THEREFORE, THE ENGINEER FELT THAT A |
| | FACTOR OF SAFETY OF 2 FOR THE UNIT WAS INCLUDED THROUGH |
| | THE FACTOR OF SAFETY OF 3 IN THE SCREW VALUES. IT IS |
| | OUR OPINION THAT THIS RATIONALE IS NOT CORRECT; THERE |
| | IS A FACTOR OF SAFETY ON THE LOAD, AND A FACTOR OF |
| | SAFETY ON THE MATERIAL, AND THE TWO ARE DIFFERENT. ONE |
| | CANNOT SUBSTITUTE FOR THE OTHER. IT SEEMS THAT THE |
| | FACTOR OF SAFETY FOR THE LOAD SHOULD BE APPLIED TO THE |
| | LOAD VALUE, THEN DEMONSTRATED THAT THE SCREWS PROPOSED |
| | MEET THAT DESIGN REQUIREMENT. PLEASE EITHER REVISE THE |
| | CALCULATIONS ACCORDINGLY OR PROVIDE DOCUMENTATION TO |
| | SUPPORT YOUR ARGUMENT (CODE REFERENCES, PUBLISHED |
| | DOCUMENTS, NATIONALLY RECOGNIZED STANDARDS, ETC.). YOU |
| | ARE WELCOME TO SUBSTANTIATE THE CALCULATIONS SUBMITTED; |
| | ANY DOCUMENTS SUBMITTED WILL BE REVIEWED AND CONSIDERED |
| | PROMPTLY. DUE TO THE URGENCY, PLEASE SUBMIT VIA EMAIL. |
| | |
| | REVIEW DONE AT REQUEST OF RR (EXPEDITED) |
| | |
