Date |
Text |
2003-02-21 00:00:00 | REVISONS SUBMITTED AS SHOP DRAWINGS WITH |
| JOSE SUAREZ, ARCHITECT COVER LETTER |
| DATED 2/14/03 |
| |
| THE ARCHITECT REQUESTS THAT POLYSTYRENE |
| FOAM PRODUCTS BE SUBSTITUTED FOR THE |
| PRECAST CONCRETE TRIM THAT WAS APPROVED |
| ON THE PERMIT PLANS.THIS TRIM IS TO |
| BE APPLIED TO THE EXTERIOR WALLS OF THE |
| BUILDING. |
| |
| THE ARCHITECT CITES SBC 803.2 AS A BASIS |
| FOR COMPLIANCE.THIS IS WITHOUT |
| STANDING SINCE 803.2 IS FOR INTERIOR |
| FINISHES. THE FIRE TEST METHOD OF E-84 |
| CITED IN 803.2 IS NOT USED TO DEFINE |
| NON-COMBUSTIBLE, ASTM E 136 IS. |
| |
| SBC 202, AS WELL AS THE CURRENT FBC |
| CLEARLY DEFINE NON-COMBUSTIBLE.ONE IS |
| CAUTIONED THAT THE SECOND PART OF THAT |
| DEFINITION CITES E 84 FOR SURFICIAL |
| COATINGS NOT MORE THAN 1/8" THICK, WHEN |
| APPLIED TO A STRUCTURAL BASE MEETING E |
| 136. |
| |
| IN THE CASE OF THE UNIVERSAL FOAM |
| PRODUCT PROVIDED, THE POLYSTYRENE FOAM |
| MUST MEET E 136 AND THE POLYURETHANE |
| COATING ON THAT FOAM OF 1/8" THICKNESS |
| OR LESS, NEED MEET ONLY E 84 |
| REQUIREMENTS. |
| |
| THE APPLICABLE CODE SECTION IS SBC 1404 |
| AND THE CITY'S AMENDMENT TO THE SBC |
| INVOKING APPENDIX F, FIRE DISTRICT |
| REQUIREMENTS.BRIEFLY, THESE CODE |
| SECTIONS REQUIRE EXTERIOR TRIM TO BE |
| NON-COMBUSTIBLE OR OF FIRE RETARDANT |
| TREATED LUMBER.THE FAVORED NATURE AND |
| CHARACTERISTICS OF FIRE RETARDANT |
| TREATED LUMBER UNDER FIRE CONDITIONS, |
| DEMONSTRATED BY TESTING, FAR EXCEED |
| THOSE EXHIBITED BY THE FOAM PRODUCT |
| THAT IS REQUESTED AS A SUBSTITUTION. |
| |
| SEVERAL OF THE TEST REPORTS PROVIDED |
| SAY THE MATERIAL MELTED AND FELL TO |
| THE FLOOR OF THE TEST CHAMBER AND |
| BURNED BEFORE THE CONCLUSION OF THE |
| REQUIRED TEST PERIOD.THE EVALUATION |
| REPORTS REFERENCED, SOME OF WHICH ARE |
| OBSOLETE, ARE FOR TESTS USING SPECIFIC |
| THICKNESSES, SYSTEMS AND UNIQUE |
| ASSEMBLAGES. |
| |
| USING PRUDENCE AND CODE EXPERIENCE, |
| TOGETHER WITH THE INFORMATION PROVIDED |
| THUS FAR,IT CANNOT BE REASONED THAT |
| THIS IS AN EQUAL AND ALTERNATE MATERIAL |
| FOR THE PURPOSE INTENDED, AND BE |
| SUBSTITUTED FOR NON-COMBUSTIBLE |
| MATERIAL AS SUCH. |