Table of contents:
- 1 Step-by-step instructions for calculating the cost
Creating a solid support for the construction is quite difficult process of labor and money. To estimate how much it costs pour a monolithic foundation, we outline the main stages at which have to spend money.
Step-by-step instructions for calculating the cost
Step # 1
Make a geodetic analysis and calculation. The construction will serve you faithfully for many years, if you correctly evaluate the soil and groundwater location level. Depends on them the depth of foundation and thickness of concrete cushion. Are geodesic research in Moscow and the Moscow region from 12 thousand p., in depending on the necessary analyzes and the complexity of the site, but with If you wish, reference information can be found on the Internet for free, in including soil atlases of the desired region.
Marking the terrain
Step number 2
Mark on the ground and carry out earthwork. it time-consuming stage, but not requiring special cash costs, if you plan to do everything yourself. Dug to the bottom the pit is sometimes spread with geotextiles to hold the substrate from crushed stone and sand, as well as the removal of part of the moisture from the ground. Price for non-woven fabric with a density of 200 g / m2 is approximately 18 R. per 1 m2.
Sand and gravel pillow
Step number 3
Pour a sand and gravel pillow. Shed it with water and thoroughly tamp with a vibrating platform or roll out with a roller. Over Pillows should be waterproofed from PVC film with a thickness of at least 100 microns.
Thus, your expenses at this stage:
- sand at a price of 1970 p. for 1 m3;
- crushed stone – 3500 r. for 1 m3;
- film – from 9 p. per 1 m2;
- rental of vibration equipment or skating rink.
In bulk purchases, the cost of building materials will be significantly lower.
Installation of removable formwork. The best option is to make it from boards 6 m long, 20 cm wide and 2.5 cm thick.
Calculate the area of the fence of the slab, for this multiply the perimeter to the height of the sides. Similarly, the value of one board is considered. Dividing the first number by the second, get the amount you need timber. The price varies from 5500 rubles per 1 m3. You it only remains to count the number of boards, say this quantity to the seller, and you will calculate how many cubes of the board must be purchased.
Buy a board that is counted in linear meters economically unprofitable, since its cost, in most cases will be unreasonably high.
The amount of nails must also be added to the calculated amount. timber for jumpers and supports, a cord for marking and control level.
So that the boards can be applied again, their inner side cover with glassine or plastic wrap, fastening with a building stapler. Then the costs of them also need to be taken into account.
Step number 5
Reinforcement cage construction for stability and reliability slabs. Most commonly used are metal rods section of 12 mm. They cost from 25 p. per linear meter at wholesale procurement.
They are laid with a grid in increments of 20 cm. You need to lay two layers such a grid. Fasten the top row with the bottom racks every 50 cm. And here it is important to calculate correctly total length of rods.
Count how many rows will lie along the sides of the slab and what is their extent. Since there are two levels of reinforcement, multiply the total the number is 2. Here you also need to add the vertical posts, their the quantity on the site is calculated in the same way. Their length is the distance between the belts, i.e. the foundation height minus 5 cm s each side. However, there is a faster way to count – in network of enough construction calculators counting necessary materials for each type of base.
Add steel wire for knitting reinforcement to the amount of expenses and renting or buying a knitting machine. For fastening one The intersection requires 30 cm of wire.
Pouring concrete into the prepared foundation frame. Necessary counting is pretty easy due to simple working geometry platforms. Multiply the length by the width and height of the plate and you will get the required volume to obtain a smooth monolithic platform.
Please note that the process must be carried out non-stop, so that inside no seams were formed that weaken the structure.
For the preparation of 1 m3 of concrete, about 900 kg are needed. cement, 0.8 m3 of crushed stone and 0.5 m3 of sand. The cost of 50 kg of cement brand M400 – from 200 rubles.
Will you interfere with the solution yourself or buy ready-made – you decide. Prices for finished mixtures with delivery start at 3 thousand. R. per 1 m3 of concrete and strongly depend on the distance to construction site and order volume.
Do not forget to take into account the energy consumption when pouring the foundation and hiring a concrete pump.
By following the step-by-step instructions, you can easily determine your the cost of building a solid solid foundation. TO the received amount add another 10% to take into account unforeseen costs. If you can save some of the finances, spend them on continuation of construction.
You have already erected a monolithic foundation yourself and you have There is good experience in calculating the cost of construction. Share it with our readers, leaving a comment on the article.