Quantity calculation for Concrete slab

Questions :- Estimate this Slab

Calculation :-

Estimate for Slab Casting (1:2:4).
= 1x28'-6"x20'-11"x0'-5" = 247.98 Cft. = 7.021 Cum.

Estimate for Formwork.
Soffit = 1x28'-6"x20'11" = 596.10 Sft.
Side = 1x2(28'-6"+20'-11")x0'-5" = 41.11 Sft.
Total Formwork = 637.21 Sft. = 59.22 Sqm.

Estimate for Reinforcement.
Short Direction Rod:-
10 mm @ 5" C/C Alt Ckd.
Ckd = 1x19x29'-0" = 551.00 Rft.
St = 1x18x26'-9" = 481.50 Rft
Ext Top = 2x18x5'-4" = 191.98 Rft.
= 1x18x7'-10" = 141.00 Rft.
Binder = 15x28'-6" = 427.50 Rft.
Long Direction Rod :-
10mm @ 7" C/C Alt Ckd.
Ckd = 2x11x21'-2" = 465.65 Rft.
St = 2x10x18'-11" = 378.32 Rft.
Ext Top = 2x10x8'-10" = 176.66 Rft.
= 2x10x7'-1" = 141.66 Rft.
Binder = 4x20'-11" = 83.66 Rft.
Total 10mm Dia Rod = 3038.93 Rft = 568.27 Kg.