JQ788
So if the engines are ~64K then the MTOW out of OOL is ~218t
and you get something like this.
AKEOFF PERFORMANCE {218000.kg., altitude 0.feet, ISA+12.deg.C.}
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JAR25 Takeoff Field Length 8088. feet
115% Factored All-Eng.Dist. 7673. feet
Balanced Field Length 8088. feet
2nd Segment Climb Gradient 2.99 %
Takeoff CLmax 1.94 {wimpress ref.area}
Takeoff Vstall 137. keas
Takeoff Vmc 135. keas
Takeoff Vfail 152. keas
Takeoff V2 158. keas
L/D at 2nd segment 12.26 {incl.windmill & asymm.}
Takeoff Static Thrust 311376. newtons per engine
Takeoff Thrust/Weight 0.291 available static
Takeoff Wing Loading 5931. n/sq.m.{W/S wimpress}