| Date |
Text |
| 2012-08-15 21:00:05 | BUILDING PLAN REVIEW |
| | *******DENIED******* |
| | ROBERT BROWN (561) 805 6652 |
| | E-MAIL: [email protected] |
| | |
| | FBC = FLORIDA BUILDING CODE 2010 |
| | FBC*= FLORIDA BUILD'G CODE (CITY AMEND) |
| | F.S.= FLORIDA (STATE) STATUTE |
| | |
| | ***THE COMMENT RESPONSE SUBMITTED ON 8/14/12 BY STEVE |
| | MORAGA, P.E., IS ACKNOWLEDGED. PLEASE RESPOND TO THE |
| | FOLLOWING COMMENTS WHICH FOLLOW THE SAME NUMBERING |
| | SEQUENCE AS THE PLAN REVIEW ON 8/1/12: |
| | |
| | 1) FBC 2002.4 LOADS. |
| | THE SUBMITTED CALCULATIONS FROM SUNCOAST ARCHITECTURE & |
| | ENGINEERING: |
| | (B) THE UNITS OF MEASURE HAVE NOW BEEN CLARIFIED. THE |
| | VALUES FOR "ALLOWABLE STRESS DUE TO BENDING" AND |
| | "ALLOWABLE STRESS DUE TO COMPRESSION" STATED ON PAGES 1 |
| | AND 2 OF THE "ENGINEERING CALCULATIONS" APPEAR TOO HIGH |
| | FOR 6061T6 ALUMINUM. PLEASE STATE THE SOURCE OF THE |
| | STATED ALLOWABLE STRESS VALUES. |
| | (E) THE COMMENT RESPONSE LETTER STATES THAT THE MOMENT |
| | DISTRIBUTION CALCULATION HAS BEEN SUBMITTED TO SHOW |
| | THAT USING THE SUM OF THE MOMENTS ON EACH BEAM SEGEMENT |
| | IS A CONSERVATIVE APPROACH. THE LATTER IS NOT A TYPICAL |
| | METHOD OF ANALYSIS, SO THE MOMENT DISTRIBUTION |
| | CALCULATION IS VERY RELEVANT. THE DIAGRAMS ON PAGE 3 |
| | AND 7 OF THE "MOMENT DISTRIBUTION CALCULATION" |
| | CORRECTLY SHOW THAT JOINT 1 IS THE CONNECTION TO THE |
| | HOST STRUCTURE. THAT CONNECTION IS SHOWN IN DETAIL |
| | G/A-3 OF THE PROJECT PLANS A PINNED CONNECTION WHICH IS |
| | TYPICAL. AS SUCH THE CONNECTION DOES NOT AND SHOULD NOT |
| | TRANSFER MOMENT TO THE HOST STRUCTURE. THAT IS A FACT |
| | THAT IS NOT RECOGNIZED OR CORRECTLY MODELLED IN MOMENT |
| | DISTRIBUTION CHART ON PAGE 5 OF THE CALCULATIONS, WHICH |
| | CLAIMS A 717 FT # (OR 8.6 KP IN.) MOMENT AT THAT |
| | CONNECTION. THE MOMENT AT THAT PINNED CONNECTION SHOULD |
| | BE ZERO WHICH MEANS THAT THE STATED 753 FT # MOMENT AT |
| | THE OTHER END OF THAT SECTION OF THE BEAM IS |
| | SIGNIFICANTLY UNDERESTIMATED WHICH IN TURN MEANS THAT |
| | THE SPAN MOMENTS ON THE BEAM ARE ALSO SIGNIFICANTLY |
| | UNDERESTIMATED. THEREFORE MOMENT DISTRIBUTION |
| | CALCULATION AS IT STANDS DOES NOT CLEARLY SHOW THAT |
| | USING THE SUM OF THE MOMENTS ON EACH BEAM SEGEMENT IS A |
| | CONSERVATIVE APPROACH. PLEASE ADDRESS THIS. |
| | |
| | **QUOTE PERMIT# ON ALL CORRESPONDENCE** |
| | |
| | END OF REVIEW COMMENTS |
| | THE CODE REFERENCES GIVE ADDITIONAL INFO |
| | TELEPHONE: (561) 805 6652 ROBERT BROWN |
| | E-MAIL: [email protected] |
