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Concrete Formwork is the structure, usually temporary, used to contain poured concrete and to mold it to the required dimensions and support until it is able to support itself. It consists primarily of the face contact material and the bearers that directly support the face contact material.

ICONSNotation for Concrete Formwork

f_el = Mold plate bending strength [MPa]
f_ebk = Primary support beam bending strength [MPa]
f_eik = Secondary support beam bending strength [MPa]
f_kl = Mold plate shear strength [MPa]
f_kbk = Primary support beam shear strength [MPa]
f_kik = Shear strength of secondary support beam [MPa]
GK= Safety factor
p= Pressure on the formwork due to fixed and live loads [MPa]
E_l =Plate modulus of elasticity [mm ² ]
E_bk = Primary support beam modulus of elasticity [mm ² ]
E_ik = Secondary support beam modulus of elasticity [mm ² ]
A_l = Plate cross-sectional area [mm ² ]
A_bk = Primary support beam cross-section [ mm ² ]
A_ik = Secondary support beam cross-sectional area [mm ² ]
I_l = Plate section moment of inertia [mm ⁴ ]
I_bk = Primary support beam section moment of inertia [mm ⁴ ]
I_ik = Secondary support beam section moment of inertia [mm ⁴ ]
S_l = Plate section moment of inertia [mm ³ ]
S_bk = Primary support beam section moment of strength [mm ³ ]
S_ik = Secondary support beam section moment of strength [mm ³ ]
b_l = Formwork plate width
L_bk = Primary support beam spacing
L_ik = Secondary support beam spacing
N_d = Fastener tensile capacity or strut axial compressive capacity

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How to Design Concrete Formwork with Detailed Calculation?

Concrete formwork Design and carrier formwork scaffolding design calculation is below:​

The characteristic value is the Concrete formwork components' modulus of elasticity and strength value is the characteristic value. For the strength value, GK = 2.0 is accepted.

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