I will tell you how to make a strip foundation with your own hands. This is an instruction from A to Z. https://doma-nk.ru turnkey construction of houses and baths https://vk.com/domank1 - join our VK group / domank1 subscribe to Instagram Today I will tell you how to make a strip foundation according to SP 22 133 30 from 2016. It all starts with the project of your future home, because the design engineer must understand what material you want to build a house from, how many floors there will be. You need to calculate the load that your house will bear on the foundation. The second thing you need is engineering and geological surveys. Based on the engineering and geological surveys of the draft design of your house, the design engineer selects the optimal type of foundation and already makes a project of reinforced concrete construction. Before carrying out earthworks, we came here with an engineer and did a topographic survey. Here the difference in height is one and a half meters, therefore, based on the topographic survey, we had the option of using equipment to level the site and remove this difference in height. After the equipment leveled the site, we immediately asked it to make trenches, but you understand, equipment is equipment, it will not do it to the millimeter, so we have a shovel and then we level it manually. We proceed to the next engineering procedure. It is called formwork. We assemble the formwork panels from 50 mm thick boards, because concrete bears quite a serious load and can bend the formwork somewhere and then there will be a belly. And no one needs this. The boards are connected to each other using 50 by 50 bars, we use galvanized screws here instead of black ones, so that later we can easily and simply disassemble them. We cover the formwork panels with a film using a stapler so that the cement milk does not flow out through the cracks. In the code of rules, in paragraph 87, it is stated that a sand and gravel mix cushion is used for the calculated soil resistance. We have a 20 cm backfill with sand and gravel compaction. To prevent the cement milk from running off into the sand and gravel mix cushion during pouring, we laid polyethylene here. The reinforcement cage is made of 12 reinforcement bars, 3 in height and 3 in width. When joining the reinforcement cage along the length, it must be done with a cross overlap. According to our project, the overlap is 52 diameters. Pay attention to these stars - they are specially needed to create a protective layer of concrete between the reinforcement and the atmosphere. If they were not here, then when a concrete pump arrives here during foundation pouring, the cage may swing somewhere and, accordingly, a piece of reinforcement will stick out of your foundation. Our foundation is a shallow strip foundation. Its soles are below the freezing depth. To prevent frost heaving forces from affecting a shallow strip foundation, it must have an insulated blind area. Frost heaving is possible for two reasons: there is moisture under the foundation and this moisture crystallizes at sub-zero temperatures. Accordingly, it is necessary to either remove sub-zero temperatures or remove the moisture. We will not be able to get rid of any of the reasons 100%, so to be on the safe side, we are trying to get rid of 2 at once and are making an insulated blind area here. We ordered concrete with anti-freeze additives. It is plus 10 outside now, but at night it reaches sub-zero temperatures. We pour the foundation using a concrete pump. There is a difference in height on our road and mixers cannot drive up directly.