Structural rules

Following structural rules are considered in the analysis:

Minimum reinforcement area
Maximum reinforcement area
Minimum spacing of bars

Minimum reinforcement area

The total area of tensile reinforcement for member types "Beam" and "Slab" is verified in accordance with 9.2.1.1(1):

Where is:	*A_s,t*	The total area of tensile reinforcement
	*f_ctm*	The mean value of axial tensile strength of concrete
	*f_γk*	The characteristic yield strength of reinforcement
	*b_t*	The mean width of the tension zone
	d	The effective depth of a cross-section

Following verification is performed for member type "Slab", if the check of minimum reinforcement area according to CSN 73 1201, chapter 8.5.2 is switched on:

Where is:	*A_s,t*	The total area of tensile reinforcement
	*A_c*	The area of cross-section
	*f_γk*	The characteristic yield strength of reinforcement

The total area of vertical reinforcement for member type "Column" is verified in accordance with 9.5.2(2):

Where is:	*A_s*	The total area of vertical reinforcement
	*N_Ed*	The design value of the compressive force
	*f_γd*	The design yield strength of reinforcement
	*A_c*	The area of cross-section

The area of vertical reinforcement for member type "Walls" is verified in accordance with 9.6.2(1):

Where is:	*A_s*	The total area of vertical reinforcement
	*A_c*	The area of cross-section

Maximum reinforcement area

All member types are verified in accordance with 9.2.1.1(3), 9.5.2(2) and 9.5.2(2):

Where is:	*A_s*	The total reinforcement area
	*A_c*	The area of cross-section

Minimum spacing of bars

The minimum spacing of bars is checked in accordance with 8.2(2):

Where is:	*s_min*	The clear distance between bars
	*k₁, k₂*	The constants, k₁= 1mm, k₂= 5mm
	ϕ	The bar diameter
	*d_g*	the maximum size of aggregate

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