Decorative permanent formwork cost-slab foundation for "Washed concrete" technology
In the previous article one of the readers in the comments asked to calculate and specify in more detail the full amount of costs for the manufacture of slabs of permanent shuttering for the foundation (including the cost of gravel (CBC) and cement). What is the same amount I spent on the production of slabs of permanent formwork? The following figures, the cost calculation.
The size of the plate permanent formwork: 1184h450 mm. On the perimeter of the foundation: 8,54h2 9,32h2 + = 35,75m need 30,19sht. (31 plate). 32pcs produced. One in reserve in case some kind of ruin. But it remained unused.
Expenses:
- Laminated plywood to form 18 mm and 9 mm - one sheet in the amount of 4168 rubles.
- Mason's net, fiberglass (40 pcs.); Pigment Brown (10kg); foamed polystyrene pellets, 0,6m3 (2 MKP); liquid soap (5L); lubricant for formwork (3L); Paper packaging (25 kg), concrete setting retarder (prices below).
- Paper packaging, I spent in the amount of 33 linear meters. How many in a roll - do not know. But there are more than 90%. Therefore, we assume no paper costs 975r. / Roll, and, let it be about 100R.
- Retarder concrete setting used about 5l. This volume need 1 kg of dry powder of 20 kg bag value 800r. I spent on surface chemistry to obtain "washed concrete" plates 40p. But in fact, I have used are still those stocks that I was given in the trading organization as samples on the plate. 20kg bag I bought later, in the blind area.
- lubricant for formwork spent in the amount of 0.5 l = 25 rubles.
- Pigment spent somewhere half - 5kg. It turns out 850 rubles. The rest of the amount used in the blind area.
- Water and electricity do not believe. Water is free. Electricity supply to the mixer - within 10 rubles. We will not be taken into account.
ASG and cement.
Displacement of one plate: 0.053 m3. 3cm of them - it's concrete and 7 cm - styrofoam.
Displacement ASG for concrete: 0.016 m3 per one plate. Machine ASG 15m3 - 10 thousand. rub. On 1 plate - 11r.
Cement. On 1 plate, I poured about 2 buckets of concrete - is 0.5 buckets of cement. Let it be 10 kg. It is 1 \ 5 from the bag on the 300r. = 60 rubles.
And there are three buckets of polystyrene. It is about 1 bucket of cement. in total 120 rubles.
The sum of the theoretical cost of cement on one plate: 180 rubles.
But this is the maximum theoretical calculation of cement costs. Picking up his notes, I have calculated that the cost of casting slabs of permanent shuttering 11 bags of cement. The cost of 1 bag in 2018. It was 309 rubles. = 3399 rubles.
Total: 4168 rubles. + 1560 rubles. + 850 rubles. + 1020 rubles. + 440 rubles. + 25 rubles. + 100 rubles. + 40 rubles. + 11h32 rubles. + 3399 rubles. = 11954 rubles.
Cost of 1 plate: 374 rubles.
A lot or a little - judge for yourself.
These cost a little less than 2 m3 of timber without shipping costs. Delivery to the place - 3-5 thousand. Here are all delivered to the site on their own - in his car (except the CBC, but its value is taken into account).
On the shuttering of boards need to 0,8m3 board and 50mm bars on props. Let it be 1m3. It is about 8 thousand. rub. But the board still. Forms for plates - also remained. And because of them, I plan to produce other forms, for their other products. I think in the 2019 season. you'll learn about it.
Incidentally, in previous articles I forgot to write about one thing. At the end of each cycle of filling (5 plates for the evening) remained polystyrene. Because with 100% accuracy to calculate the amount of it it was impossible. Where he was: throw or use? I poured it into molds for decorative tiles. Turned out here are "warm" light and decorative tiles:
Where to use them - do not know yet. Try to sell on your ad? But the amount is small - about 20pcs. Suitable only for the facade, as small strength.
Read more: Why I chose fiberglass reinforcement for slab-foundation?
***
Subscribe per channel, introducing it in the browser bookmarks. There is a lot of useful information and interesting stories.