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INSTALLATION PARAMETERS AND APPLIED FORCES TO THE <br /> SUPPORTING STRUCTURE (CONTINUED) <br /> The applied forces drawing in diagram 2, details the relative <br /> position and the direction of forces that the Tether Track® <br /> Bridge Anchor System applies to the supporting structure. <br /> Loads applied to the support structure can be determined by <br /> the following: aa <br /> Variables „ Rt <br /> P = 900 lb. Maximum Arresting Force <br /> R1 = Vertical arresting force and weight of system applied by i <br /> B1 <br /> end support hangers(lb.) <br /> R2 = Longitudinal arresting force from maximum offset arresting "` B, <br /> force angle of 30 degrees applied by end support lower <br /> hanger brackets thru trolley,bridge,end trucks,runway <br /> end stops and track(lb.) R3 <br /> R3 = Lateral arresting force from maximum offset arresting force <br /> angle of 30 degrees applied by end support lower hanger La <br /> brackets thru trolley, bridge end stop, bridge,end truck Diagram 2. Applied forces from bridge to <br /> and track(lb.) supporting structure. <br /> R4 = Vertical arresting force and <br /> weight of system applied by middle INSTALLATION PARAMETERS <br /> support hangers(lb.) BRIDGES <br /> R5 = Lateral arresting force from RUNWAY WEIGHT MAX.L1 MAX. MAX.L9 <br /> maximum offset arresting force STYLE PER FT. L2 L8 <br /> angle of 30 degrees applied by 1 BRIDGE 2 BRIDGES I BRIDGE 2 BRIDGES <br /> middle support lower hanger F500 4.23# 12' 8' 8" 13.2" 2.5' 1.5' <br /> brackets thru trolley, bridge end F1000 6.34# 18' 12' 8" 15" 3.5' 2' <br /> stop,bridge,end truck and F500S 7.78# 20' 14' 48" 13.2" 4.5' 2' <br /> track(lb.) F500SL 11.14# 25' 20' 48" 13.2" 5.5' 2.5'. <br /> L1 = Distance between hanger F500SLX 11.64# 30' 25' 48" 13.2" 5.5' 2.5' <br /> centerlines(support centers)(ft.) BRIDGE WEIGHT MAX.L4 <br /> L2 = Maximum splice joint centerline STYLE PER FT. BRIDGE SPAN MAX.L5 <br /> to hanger centerline(support AL250 3.88# 15' 3' <br /> center)(in.) <br /> L4 = Bridge span(distance between runway centerlines)(ft.) <br /> L5 = Bridge cantilever <br /> L8 = End approach loss from end truck and end stop(in.) <br /> L9 = Runway cantilever(ft.) <br /> W = Weight per foot of Tether Track®(lb./ft) <br /> WE = Weight of end truck(lb.),for F1000 runways:27#for coped bridge, 19#for uncoped bridge,for all other runways: 18# <br /> for coped bridge, 10#for uncoped bridge <br /> LE = Length of end truck(in.),23.9"for F1000 runway,20.5"for all others <br /> 1.5 = Recommended arresting force load factor <br /> 8.5 = Bridge end approach loss from trolley and end stop(in.) <br /> 7 = Weight of trolley(lb.) <br /> 3.88= Weight per foot of bridge(Ib./ft.) <br /> Formulas <br /> For one bridge: <br /> R1 =((1.5*P+7)*(L4+L5-(8.5/12))/L4+WE+3.88*(L4/2+L5))*(L1 +L9-L8/12)/L1 +W*(L1 +L9)2/(2*L1) <br /> R2=sin(30°)* 1.5*P*(L4+L5-(8.5/12))/L4 <br /> R3=sin(30°)* 1.5*P*(L1 +L9-(L8/12))/L1 <br /> R4=(1.5*P+7)*(L4+L5-(8.5/12))/L4+WE+3.88*(L4/2+L5)+W*L1 <br /> R5=sin(30°)* 1.5*P <br /> For two bridges: <br /> R1 =((1.5*P+7)*(L4+ L5-(8.5/ 12))/L4+WE+3.88*(L4/2+L5))*((L1 +L9-L8/12)+(L1 +L9-L8/12-LE/12))/ <br /> L1 +W*(L1 +L9)2/(2*L1) <br /> R2=2*sin(30°)* 1.5*P*(L4+L5-8.5/12)/L4 <br /> R3=sin(30°)* 1.5*P*((L1 + L9-L8/12)+(L1 +L9-L8/12-LE/12))/L1 <br /> R4=2*((1.5*P+7)*(L4+L5-(8.5/12))/L4+WE+3.88*(L4/2+ L5))+W*L1 <br /> R5=2*sin(30°)* 1.5*P <br /> CORBEL` 14 03/20 <br /> A CLASS ABOVE <br /> IuI30 <br />