Roofs with "beaver tail" tiles in Dinkelsbühl, Germany [image source]
Greetings, how are you steemit friends? Glad to see you again and hopefully healthy always. Today I will discuss the construction materials that are often encountered in our daily life. hopefully useful.
With the development of technology, especially the world of construction, the more easier for us in doing the daily work as well as the choice of types of construction materials more and more to choose, depending on quality and price.
Today's discussion specifically discusses roof cover work, roof tiles are not really new in a construction world, given a many findings that mention an use of this type of material several centuries ago.
We should get acquainted with roof tiles especially concrete roof tiles.
Dry Stone Roof Construction [image source]
Roof tile is a roof that serves to cover the roof and consists of pieces of overlap (overlapping).[source]
The general shape of a tile is square and made of various materials such as wood, clay, asphalt, plastic, concrete and so forth.
Roof tiles were first discovered in the Helladic house in Greece at the beginning of the third millennium.[source]
From different sources, the roof tiles actually came from China during the Neolithic and Middle East periods thereafter.[source]
The thing that most affects the spread of roof tiles in the American continent is during the colonial period by introducing refractory roof tiles.
The massive fires in government buildings led to the government issuing standardized buildings that had to use roof tiles.
Roof tiles of concrete have their own characteristics and are different from other type roof tiles, making roof tiles of this type have different stages during the process. Roof tiles of this type are made of quality portland cement and river sand.
Concrete roof tiles cast machine [image source]
Stages of making concrete roof tiles
- Mining sand
River sand is mined using a sifted filter to prevent sand from mixing with dirt and gravel by using a 5 mm sieve filter.[source] - Make a mix
The filtered sand is then mixed with other ingredients with composition, 1 portland cement: 3 fine sand and water. You must make sure everything is perfectly mixed.[source] - Press
Once the mortar is perfect, then it is time to print using a mold that has been prepared and compacted by pressing. [source] - Save
Nearly finished roof tiles are stored in a storage rack for 1x24 hours.[source] - Finishing
Roof tiles that have been stored for 1x24 hours are then removed from the mold and soaked in a large container for 3 days, soaking works to strengthen the tile. After the immersion period is complete, the tile should be dried in the sun and painted.[source]
Roof tiles of concrete have advantages, among others, stronger, economically, corrosion-resistant. In addition to the advantages, with a weight of 60 kg / m2 clearly makes the roof tiles have a deficiency, the weight generated from the concrete roof tiles that make you have to make extra thinking about the type of roofing a more solid roof. Roof tiles of concrete are also very susceptible to leaking because imperfect interlock is also easy to crack body.
Currently, the tile is very diverse, there is even a tile that can generate electricity, how much labor and materials needed to complete the roof cover work with 16 m2 area?
Question.
What is the required labor and material needs, to complete the roof cover work with a 16 m2 (8x2 m) area?
Answer.
In accordance with the technical analysis of Indonesian National Standard [source] to complete 1 m2 of roof covering work is required.
Labor
| Information | Amount |
|---|---|
| Workers | 0200 Person per day |
| Carpenter | 0.100 Person per day |
| Foreman | 0.010 Person per day |
| Overseer | 0.010 Person per day |
Material
| Information | Amount |
|---|---|
| Roof tiles concrete | 11,000 Pieces |
| Nail 2 "-5" | 0.030 Kg |
So to finish 16 m2 roof cover work using concrete roof tiles is required.
Labor
| Items | Information | Amount |
|---|---|---|
| Workers | 0.200 Person per day x 16 m2 | 3.200 Persons |
| Carpenter | 0.100 Person per day x 16 m2 | 1.600 Persons |
| Foreman | 0.010 Person per day x 16 m2 | 0.160 Persons |
| Overseer | 0.010 Person per day x 16 m2 | 0.160 Persons |
Material
Items | Information | Amount
Roof tiles concrete | 11.000 Pieces x 16 m2 | 176.000 Pieces
Nail 2 "-5" | 0.030 Kg x 16 m2 | 0.480 Kg
Roof tiles have long been used by humans as a roof covering element and are evidenced by some of the findings of several centuries ago by experts.
Roof tiles of concrete are considered more economical and durable to be used if concrete roof tiles are done perfectly, but because the resulting load 60 kg / m2 makes the building structures have to accept the extra load from the roof tiles.
If the installation of concrete roof tiles is not perfect then it is feared will endanger the user during the earthquake, roof tiles can easily fall and hit the humans.
Currently, there are many types of roof tiles that can be used and have advantages such as concrete roof tiles are cheaper.
To complete the 16 m2 roof cover work using concrete roof tiles is required.
Labor
| Items | Amount |
|---|---|
| Workers | 3.200 Persons |
| Carpenter | 1.600 Persons |
| Foreman | 0.160 Persons |
| Overseer | 0.160 Persons |
Material
| Items | Amount |
|---|---|
| Roof tiles concrete | 176.000 Pieces |
| Nail 2 "-5" | 0.480 Kg |
This calculation is only an example and can be used by anyone, this calculation is in accordance with a technical analysis of Indonesian National Standard and can be developed in accordance with the needs of a field.
This is the only thing I can write on this occasion, over all the mistakes and lack of unintentional writing as a servant of God, I apologize.
Thanks to friends who have visited this blog and provided constructive comments, as well as scientists who are willing to sacrifice their time for a better civilization.
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Best regards @kharrazi
Great information about this post.
Thank you
you worked alot by creating this post...may you be rewarded well
thank you :)