| Date |
Text |
| 2023-06-23 14:33:45 | THIS PLAN WAS REVIEWED AND FAILED BY PETER LEDUC, FIRE |
| | MARSHAL, WITH THE FOLLOWING COMMENTS: |
| | |
| | 1) THERE IS AN INDCATION OF A PROPOSED 13R FIRE |
| | SPRINKLER SYSTEM IN A MULTI-ROOM APARTMENT TYPE |
| | BUILDING. |
| | |
| | THE WATER SUPPLY TO THIS SYSTEM APPEARS TO OFF OF THE |
| | DOMESTIC WATER SUPPLY. |
| | |
| | PER NFPA 13D |
| | |
| | CHAPTER 6 WATER SUPPLY |
| | 6.1 GENERAL PROVISIONS. |
| | 6.1.1 EVERY AUTOMATIC SPRINKLER SYSTEM SHALL HAVE AT |
| | LEAST ONE |
| | AUTOMATIC WATER SUPPLY. |
| | 6.1.2 WHERE STORED WATER IS USED AS THE SOLE SOURCE OF |
| | SUPPLY, |
| | THE MINIMUM QUANTITY SHALL EQUAL THE WATER DEMAND RATE |
| | TIMES 10 MINUTES UNLESS PERMITTED OTHERWISE BY 6.1.3. |
| | 6.1.3 WHERE STORED WATER IS USED AS THE SOLE SOURCE OF |
| | SUPPLY, |
| | THE MINIMUM QUANTITY SHALL BE PERMITTED TO EQUAL THE |
| | TWO |
| | SPRINKLER WATER DEMAND RATE TIMES 7 MINUTES WHERE |
| | DWELLING |
| | UNITS MEET THE FOLLOWING CRITERIA: |
| | (1) ONE STORY IN HEIGHT |
| | (2) LESS THAN 2000 FT2 (186 M2) IN AREA |
| | 6.1.4 THE STORED WATER REQUIREMENT OF 6.1.2 OR 6.1.3 |
| | SHALL BE |
| | PERMITTED TO BE A COMBINATION OF THE WATER IN THE WELL, |
| | INCLUDING |
| | THE REFILL RATE, PLUS THE WATER IN THE HOLDING TANK IF |
| | SUCH |
| | TANK CAN SUPPLY THE SPRINKLER SYSTEM. |
| | |
| | THE WATER SUPPLY NEEDS TO BE BETTER DEFINED & |
| | IDENTIFIED TO SHOW THAT SUPPLY INTO THE TANK WHEN THE |
| | PUMP IS PROVIDING WATER TO THE SYSTEM AND THE PUMP DOES |
| | NOT OVER RUN THE SUPPLY. |
| | |
| | |
| | 1A) THE CALCULATION OF THE WATER SUPPLY APPEARS TO BE |
| | FROM FIRE HYDRANT FLOWS ALONG BROADWAY; HOWEVER, THE |
| | CALCULATION OF THE SYSTEM APPEARS TO OFF OF THE SAME |
| | FLOW AND NOT THE DOMESTIC METER AND A DOMESTIC DEMAND |
| | FLOW |
| | OF THE OCCUPANCY DOES NOT APPEAR TO BE CALCULATED |
| | |
| | 10.4.9.2 CALCULATION PROCEDURE. DETERMINATION OF THE |
| | REQUIRED |
| | SIZE FOR WATER DISTRIBUTION PIPING SHALL BE IN |
| | ACCORDANCE |
| | WITH THE FOLLOWING PROCEDURE: |
| | (1) STEP 1???DETERMINE PSUP . OBTAIN THE STATIC SUPPLY |
| | PRESSURE THAT |
| | WILL BE AVAILABLE FROM THE WATER MAIN FROM THE WATER |
| | PURVEYOR |
| | OR FROM A PRIVATE SOURCE, SUCH AS A TANK SYSTEM, A |
| | PRIVATE |
| | WELL SYSTEM, OR A COMBINATION OF THESE. FOR A PRIVATE |
| | SOURCE, THE AVAILABLE WATER SUPPLY PRESSURE SHALL BE |
| | BASED ON |
| | THE MINIMUM PRESSURE CONTROL SETTING FOR THE PUMP. |
| | (2) STEP 2 ??? DETERMINE PLSVC . USE TABLE 10.4.9.2(A) |
| | TO DETERMINE |
| | THE PRESSURE LOSS IN THE WATER SERVICE PIPE BASED ON |
| | THE SELECTED SIZE OF THE WATER SERVICE. |
| | (3) STEP 3 ??? DETERMINE PLM. USE TABLE 10.4.3(A) TO |
| | DETERMINE |
| | THE PRESSURE LOSS FROM THE WATER METER BASED ON THE |
| | SELECTED |
| | WATER METER SIZE. WHERE THE ACTUAL WATER METER |
| | PRESSURE LOSS IS KNOWN, PLM SHALL BE THE ACTUAL LOSS. |
| | (4) STEP 4 ??? DETERMINE PLD . DETERMINE THE PRESSURE |
| | LOSS FROM |
| | DEVICES, OTHER THAN THE WATER METER, INSTALLED IN THE |
| | PIPING |
| | SYSTEM SUPPLYING SPRINKLERS, SUCH AS PRESSUREREDUCING |
| | VALVES, BACKFLOW PREVENTERS, WATER SOFTENERS, OR |
| | WATER FILTERS. |
| | (A) DEVICE PRESSURE LOSSES SHALL BE BASED ON THE DEVICE |
| | MANUFACTURER???S SPECIFICATIONS. |
| | (B) THE FLOW RATE USED TO DETERMINE PRESSURE LOSS SHALL |
| | BE THE RATE FROM SECTION 10.1, EXCEPT THAT 5 GPM |
| | (19 L/MIN) SHALL BE ADDED WHERE THE DEVICE IS INSTALLED |
| | IN A WATER SERVICE PIPE THAT SUPPLIES MORE |
| | THAN ONE DWELLING. |
| | (C) AS AN ALTERNATIVE TO DEDUCTING PRESSURE LOSS FOR A |
| | DEVICE, |
| | AN AUTOMATIC BYPASS VALVE SHALL BE INSTALLED TO DIVERT |
| | FLOW |
| | AROUND THE DEVICE WHEN A SPRINKLER ACTIVATES. |
| | |
| | PLEASE REVIEW AND PROVIDE DETAIL JUSTIFICATION OF YOUR |
| | CALCULATIONS OR CORRECT PER 13D |
| | |
| | |
| | |
| | 2) THIS SYSTEM APPEARS TO BE TIED INTO A DOMESTIC WATER |
| | SUPPLY & METER. |
| | |
| | THE CITY'S WATER UTILITIES DEPT MAY HAVE REQUIRMENTS |
| | THAT YOU MUST MEET TO MATCH THEIR REQUIREMENTS. |
| | |
| | PLEASE CONTACT THE CITY'S WATER UTILITIES DEPT FOR |
| | THEIR REQUIREMENTS. |
| | |
| | |
| | 3) WHEN RESUBMITTING, PLEASE PROVIDE PLAN SHEET |
| | REVISION CLOUDS OR NUMBERED NARRATIVE RESPONSES TO THE |
| | ABOVE. |
| | |
| | |
| | 4) ADDITIONAL COMMENTS MAY BE PROVIDED ON THE |
| | RE-SUBMITTAL OF THE ABOVE. |
| | |
| | |
| | PETER LEDUC |
| | FIRE MARSHAL |
| | 561-804-4709 |
| | [email protected] |
| | |
| | |
| | |
| | |
