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<br />.'; <br /> <br />Nov 13,2001 <br /> <br />WEB BRACING RECOMMENDATIONS <br /> <br />ST - WEBBRACE <br /> <br /> H_ rv{fl Mitek Industries, Inc. <br /> w iFT"'\ <br /> MAXIMUM WEB FORCE (Ibs.) <br />X-BRACE 24"O.C. 48" O.C. <br /> ..-... 72"O.C. <br />BAY SIZE BRACING MATERIAL TYPE BRACING MATERIAL TYPE BRACING MATERIAL TYPE <br /> A B C D A B C D C D <br /> .. <br />10'-0" 3680 . 4600 . 4600 . 6900 . 1344 4600 . 4600 . 6900 . 4034 6382 <br /> 3942'. ... ~ . 3942 . 5914 . <br />. 12'-0" 3154 . 3942 . 5914 . 1344 3942 . 3942 . 5914 . <br />14'-0" 2760 . 3450 . 3450 . 5175 . 1344 3450 . 3450 . 5175 . 3450 . 5175 . <br />16'-0" 2453 . 3066 . 3066 . 4600 . 1344 3066 . 3066 . 4600 . 3066 . 4600 . <br />18'-0" 2208 . 2760 . 2760 . 4140 . 1344 2760 . 2760 . 4140 . 2760 . 4140 . <br /> . ..._-~-.~..'.~ <br />20'-0" 2007 . 2509 . 2509 . 3763 . 1344 2509 . 2509 . 3763 . 2509 . 3763 . <br /> <br />* c CONTROLLED BY CONNECTION <br /> <br />TYPE BRACING MATERIALS .. GENERAL NOTES <br /> 1. X.BRACING IS REQUIRED TO TRANSFER THE CUMULATIVE LATERAL BRACE FORCE INTO THE ROOF AND/OR <br /> CEILING DIAPHRAGM. THE DIAGRAM IS TO BE DESIGNED BY A OUALIFIED PROFESSIONAL. <br /> 1 X4IND. 45 SYP 2. THESE CALCULATIONS BASED ON LATERAL BRACE CARRYING 2% OF THE WEB FORCE. <br />A -OR- 3. X.BRACIN-G MATERIAL MUST BE SAME SIZE AND GRADE OR BETTER, AS THE LATERAL BRACE MATERIAL, <br /> AND SHALL BE INSTALLED IN SUCH A MANNER THAT IT INTERSECTS WEB MEMBERS AT APPROX. 45 <br /> 1 X 4 #2 SRB (DF, HF, SPF) DEGREES AND SHALL BE NAILED AT EACH END AND EACH INTERMEDIATE TRUSS WITH 2.16d COMMoN <br /> WIRE NAILS. (3.16d NAILS FOR 2X6 MATERIAL) - - - <br /> 4. CONNECT LATERAl BRACE TO EACHTRUSS WIlJiTWO 16d COMMON WIRE NAILS. (THREE 16d NAILS FOR <br />'B 2X6 LATERAL BRACES) ........ . <br />2 X 3 #3, STD, CONST (SPF, DF, HF, OR SYP) 5. LATERAL BRACE SHOULD BE CONTINUOUS AND SHOULD OVERLAP ATLEAST ONE TRUSS SPACE FOR <br /> CONTiNUITY. <br /> 6. FOR ADDITIONAL GUIDANCE REGARDING DESIGN AND INSTALLATION OF BRACING, CONSULT OSB.89 <br />C 2 X 4 #3, STD, CONST (SPF, DF, HF, OR SYP) TEMPORARY BRACING OF METAL PLATE CONNECTED WOOD TRUSSES AND HIB,91 HANDLING INSTALLING <br /> AND BRACING FOR RECOMMENDATIONS FROM TRUSS PLATE INSTITUTE, 583 D'ONOFRIO ORNE. MADISON, <br /> Wl53719. <br />D 2 X 6 #3 OR BETTER (SPF, DF, HF, OR SYP) 7. SEE SEPARATE TRUSS ENGINEERING FOR DESIGN OF WEB MEMBER. <br />8. THE 16d NAILS SPECIFIED SHOULD BE 3.5" LONG AND 0.162" IN DIAMETER, IN ACCORDANCE WITH NOS 1991. <br /> <br /> <br />NOTE: FOR ASPACING OF 24'0.C. ONLY, MITEK STABILIZER TRUSS BRACING SYSTEMS CAN BE <br />SUBSTITUTED FOR TYPEA, B. C AND 0 BRACING MATERIAL. CROSS BRACING FOR STABILIZERS <br />ARE TO BE PROVIDED AT BAY SIZE INDICATED ABOVE. WHERE OIAPHRAGM BRACING IS REQUIRED <br />AT PITCH BREAKS. STABILIZERS MAY BE REPLACED WITH WOOD BLOCKING. SEE STABILIZER <br />TRUSS BRACING INSTALLATION GUIDE AND PROOUCT SPECIFICATION. <br /> <br /> <br />LATERAL <br />BRACING <br />MATERIAL <br /> <br />Horizontal Blocking <br /> <br />X-BRACING <br />MATERIAL <br />(One leg of X-bracing shown dashed for drawing clarity. <br />This leg will require horizontal blocking next to the top and <br />bottom chord so it attaches to the brace plane.) <br /> <br />TRUSS WEB <br />MEMBERS <br />