{"name":"Calculateur Dosage Béton & M3","short_name":"CalculateurBéton","description":"Calculateur de béton gratuit : volume m³, sacs de ciment (35kg/25kg), sable, gravier et eau pour dalle ou fondation selon la norme NF EN 206.","start_url":"/","display":"standalone","background_color":"#F5F5F7","theme_color":"#0071E3","lang":"fr","icons":[{"src":"/favicon.ico","sizes":"any","type":"image/x-icon"},{"src":"/og-image.png","sizes":"1200x630","type":"image/png"}]}