{"version":"1.0","type":"card","id":"dac6f93c-6d24-4013-99ea-76469387f640","url":"https://stacklist.com/card/dac6f93c-6d24-4013-99ea-76469387f640","title":"Layout Basics for Slabs and Footers","source_url":null,"note":"Laying out concrete slabs, patios, and driveways begins with staking the perimeter using the 3-4-5 triangular method to ensure square corners. For deeper foundation footers, batter boards are constructed outside the work area, serving as a precise guide to mark trench and footer dimensions, transfer building lines, and maintain the final wall positions throughout excavation and construction.","image":{"url":"https://ucarecdn.com/df843dcd-8cb5-4808-afc3-e494c640a233/","alt":"Layout Basics for Slabs and Footers","width":1400,"height":1400},"stack":{"id":"25ece16f-478d-4426-af12-287340395178","title":"Building & Construction","url":"https://stacklist.com/stack/25ece16f-478d-4426-af12-287340395178"},"created_at":"2026-08-04T01:43:58.648Z","updated_at":null,"aco":null,"_links":{"self":"/api/public/card/dac6f93c-6d24-4013-99ea-76469387f640.json","html":"https://stacklist.com/card/dac6f93c-6d24-4013-99ea-76469387f640","md":"/api/public/card/dac6f93c-6d24-4013-99ea-76469387f640.md","stack_json":"/api/public/stack/25ece16f-478d-4426-af12-287340395178.json"}}