. Where the bonded reinforcenlent is fixed at reasonably close centres within the tension zone (spacing ≤ 5( c + Φ/2), cf. Figure 7.2), the maximum crack spacing s r,max may be calculated as follows: s r,max = k 3 c + k 1 k 2 k 4 Φ / ρ p,eff (7.11) where: Φ is the bar diameter. Where a mixture of bar diameters is used in a section, an equivalent diameter, should be used. C is ρ p,eff see the difference of the mean strains above k 1 is a coefficient which takes account of the bond properties of the bonded reinforcement: k 1 = 0,8 for high bond bars, k 1 = 1,6 for bars with an effectively plain surface (e.g.

Prestressing tendons). K 2 is a coefficient which takes account of the distribution of strain: k 2 = 0,5 for bending, k 2 = 1,0 for pure tension. Intermediate values of k 2 should be used for cases of eccentric tension or for local areas: k 2 = ( ε 1 + ε 2)/(2 ε 1) (7.13) where ε 1 is the greater and ε 2 is the lesser tensile strain at the boundaries of the section considered, assessed on the basis of a cracked section. K 3 is a Nationally Determined Parameter, see k 4 is a Nationally Determined Parameter, see. Where the spacing of the bonded reinforcement exceeds 5( c + Φ/2) (cf.

Figure 7.2), or where there is no bonded reinforcement within the tension zone, the maximum crack spacing s r,max may be calculated as follows: s r,max = 1,3( h - x) (7.14) where: h is the overall depth of the section (see ) x is the neutral axis depth of the section (see ). This application calculates the crack width w k from your inputs.

Intermediate results will also be given. First, change the following option if necessary.

Aci

Crack Width Calculation

FREE VERSION OF RCsolver Concrete Design with EC2 EC8 and ACI 318 Get full capabiltiies with our free version of RC-Solver once you signup for our newsletter With. Crack width and Stress limitation. Notation and methodology according to clause 7 of EC2. Stress calculation assuming cracked. Calculation of crack width.