In addition to vertical shear force, slab-column connections also have to transfer unbalanced moment due to combined vertical and lateral forces as a result of wind effect or earthquake excitations.

Due to unevenness of sinter material, the sinter process is unbalanced, which has effect on product rate and strength of sinter ore.

Adopting ANOVA of unbalanced data, evaluating the effect of different treatment, the best treatment through the multiple comparison graph is got.