ETCONp - Ethiopian Construction Work Professionals

16 Dec 2024 05:01

Intercon Construction Chemicals 
    
👉 Authorized agent of MC (Conmix), Weber and SIMENTEK

● Concrete Admixtures
● Bonding Agents
● Waterproofings
● Concrete Repair, Grout   
● Tile Adhesive & Tile Joint Fillers 
● Wall Putty, Prime Coat, Rush Coat
● Quartz, Contextra
● Specialized paints (Thermal and Insulation Paints, Street and Playground Paints)
● Floor hardener, Epoxy              
● Geotextiles, Geo-membranes and other construction chemicals and materials

Tel: 0961955555 or 0961955559
Address: Signal, around signal mall

ETCONp - Ethiopian Construction Work Professionals

14 Dec 2024 15:26

👉What is the differences between Singly reinforced and Doubly reinforced beam sections

🚧Singly reinforced beam

⏺singly reinforced beams are beams with tension reinforcement only( reinforcement to assist concrete carry tension)

🚧Doubly reinforced beam

⏺due to different reasons, it isn't always possible to use singly reinforced beam and it becomes necessary to assist concrete to carry compression too.

⏺And beams with both tension and compression reinforcement are called doubly reinforced beams.

💫Doubly reinforced beams are advantageous over singly reinforced beams for the following reasons :

*Reduces sustained deflection( long term deflection)

* Increases ductility

* Enhances tension mode of failure

* Decreased depth of section, leading to astetics

@etconp

ETCONp - Ethiopian Construction Work Professionals

14 Dec 2024 12:34

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ETCONp - Ethiopian Construction Work Professionals

14 Dec 2024 09:20

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👉የ መንገድ ግንባታ ዲዛይን ስራ ማሰራት ይፈልጋሉ?

🏷በ መንገድ ስራ ላይ የአፈር መጠን እና ዋጋ ስሌት፣የ አስፋልት ምንጣፍ ስሌት፣ሙሉ የ ስትራክቸራል ድሮዊንግ ስራ በፎጥነት እና በ ጥራት ሰርተን እናስረክባለን።

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💫ከታች ባሉት ኣማራጮች ይጎብኙን

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ድህረ ገፅ:- www.musfide.com

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ሊንክደን:- https://www.linkedin.com/in/musfide

ወይም በ +251905666664 ከደወሉ ያገኙናል🙏

ETCONp - Ethiopian Construction Work Professionals

14 Dec 2024 05:30

ታምራት  ፕሌት እና ጄቦልት አቅራቢ

👉ከ አባይ ግድብ እስከ ኮሪደር ልማት

ከግለሰብ ቤቶች እስከ ተቋማት እና

መጋዘኖች በሁሉም የኢትዮጽያ ክፍል

አሻራችንን አሳርፈናል

🔰ምን ይፈልጋሉ?

✂️ላሜራ መቁረጫ ÷ ማጠፊያ እና መብሻ ማሽኖች አሉን

🔗ፌሮ (ቶንዲኖ) ጥርስ ማስበጀት ወይንም ማሳጠፍ ካሰቡ ለሱም ማሽኑ በጃችን ነዉ

📐ማንኛዉንም የሞደፊክ ስራዎችን የሚሰሩ ብቁ ባለሙያዎችም አሉን

☎️ይደዉሉልን ያማክሩን

📍ኢትዮጵያ ዉስጥ የትም እንልክሎታለን

አድራሻችን፦
                    ቁ.1 መርካቶ
                    ቁ.2 ተክለሀይማኖት
                     ቁ.3 አየር ጤና

0904040477
0911016833

ETCONp - Ethiopian Construction Work Professionals

13 Dec 2024 12:31

👉በዩናይትድ ስቴትስ ኦክላሃማ ውስጥ በአሜሪካ ከሚገኙ ሰማይ ጠቀስ ሕንፃዎች የሚበልጥ ግዙፍ ፕሮጀክት የበረራ እክል ይፈጥራል በሚል ምክንያት ግንባታው መስተጓጓል ሊፈጠርበት ችሏል።

🚧"The Legends Tower" በሚል የተሰየመውና 581 ሜትር ርዝመት የሚኖረው በኦክላሃማ ከተማ ሊገነባ የነበረው ሰማይ ጠቀስ ሕንፃ በኒውዮርክ ከተማ ከሚገኘውና በአሜሪካ ቀዳሚው ሰማይ ጠቀስ ሕንፃ ከሆነው World Trade Centre በ41 ሜትር የሚረዝም ነው።

💫የኦክላሃማ ከተማ ኤርፖርቶች ዳይሬክተር ሕንፃው ከተገነባ የአውሮፕላኖች የበረራ ሰአት እንዲጨምር ያደርጋል ብለዋል።

🏷ገንቢዎቹ የሕንፃውን ዲዛይን ሲሰሩ በአካባቢው የሚገኘውን Rogers World Airport እና Tinker Air Force Base ግንዛቤ ውስጥ መክተት ነበረባቸው ተብሏል።

@etconp

ETCONp - Ethiopian Construction Work Professionals

13 Dec 2024 06:30

👉Why don't we use circular beams in construction or in structures?

💫Before we look at the reasons, please have a look at the framed structure where the conventional Rectangular section has been adapted :                                                                                               
🚧1.Formwork

Very difficult It has to be made out of either MS sheets or Aluminum sections.

Fixing it horizontally is more challenging since the base of the beam form work shall be semi circular.

The conventional methods of supporting with wooden CHABI is not suitable.

The Formwork shall need to have a provision on the top for pouring concrete.

🚧2.The casting

Imagine that a conventional letter box is laid Horizontality and you have to pour concrete through the opening at the top.

The concrete has to be high slump concrete so that it moves to all crevices of the section.

Finishing the top portion of the beam shall be a highly skilled job.

🚧3. The de -shuttering :

It shall not be possible to first strike off the sides and then the beam bottom .

The form work shall have to be removed in two halves after the concrete attains the strength.

⭐️Hope you’re clear with certain difficulties associated with the circular sections.

@etconp

ETCONp - Ethiopian Construction Work Professionals

12 Dec 2024 11:01

👉በሳዑዲ 23 ቢሊዮን ዶላር የፈጀው የባቡር ሜትሮ ፕሮጀከት በ12 አመቱ ተጠናቆ ሥራ ጀምሯል።

🚧በሳዑዲ አረቢያ መሪ ንጉስ ሳልማን ተመርቆ ሥራ የጀመረው Riyadh Metro 12 አመት የፈጀ ሜጋ ፕሮጀክት ሲሆን፣ በግንባታው ሂደት ከመላው አለም የተወጣጡ እና ወደ ደርዘን የሚጠጉ የኢንጂነሪንግ፣ የዲዛይን እና የተለያዩ ሥራ ተቋራጮች ኩባንያዎች ተሳትፈውበታል።

💫የሳዑዲ ሜትሮ ዲዛይን የተደረገው በቀን 3.6 ሚሊዮን መንገደኞችን ማጎጎዝ እንዲችል ነው።

🏷በሳዑዲ የከተሞችን ፈጣን ዕድገት ተከትሎ ለሚፈጠረው የትራንስፖርት ችግር መላ ይሆናል ተብሎ የተገነባው ይህ ፕሮጀክት የተገነባው Samsung C&T በተባለ አለም አቀፍ ኩባንያ ነው። አርክቴክቱ ደግሞ ስመ ጥሩው Zaha Hadid Architects ነው።

⭐️የሪያድ ሜትሮ ጠቅላላ ወጪ 23 ቢሊዮን ዶርላ የፈጀ ሲሆን ባቡሩ የሚንቀሳቀስው ያለሹፌር መሆኑ ታውቋል።

❇️በዚህም በአለማችን ያለሹፌር የሚንቀሳቀስ ረጅም የሜትሮ ትራንስፖርት ተብሏል።

🌟በጠቅላላው 176 ኪሎ ሜትር የሚረዝመው የሪያድ ሜትሮ ባቡር መስመር ስድስት መስመሮችን የያዘ ሲሆን፣ 85 ጣቢያዎችን ያቀፈ ነው፤ 34ቱ የሊፍት መወጣጫ ያላቸው ናቸው።

@etconp

ETCONp - Ethiopian Construction Work Professionals

12 Dec 2024 09:16

👉እስቲ ኣሁን ደሞ ስለ lap length , Development length,Anchorage length ትንሽ እንንገራቹ።

🏷1. ላፕ ሌንግዝ (lap length) - ተፈላጊ የብረት (ፌሮ) ርዝመት
ውጥረትን (stresses) ከአንድ ብረት ወደሌላ የሚተላለፍበት ነዉ

⏺The lap length varies from member to member. Lap length for tension members = 40d

⏺Lap length for compression members = 50d Where, d = Diameter of bars.

🏷2. ደቨሎፕመንት ሌንግዝ (Development length) -ተፈላጊ
የብረት ርዝመት ውጥረትን (stresses) ከብረቱ ወደ ኮንክሪቱ የሚተላለፍበት ነው።

🏷3. አንኮሬጅ ሌንግዝ (Anchorage length) - ይህ ርዝመት አይነት በቂ የሆነ ደቨሎፕመንት ሌንግዝ (development
length ) በሌለባቸው በ Support / fixed ends ላይ provide የምናረገው ርዝመት ነው።

@etconp

ETCONp - Ethiopian Construction Work Professionals

12 Dec 2024 06:18

ታምራት  ፕሌት እና ጄቦልት አቅራቢ

👉ከ አባይ ግድብ እስከ ኮሪደር ልማት

ከግለሰብ ቤቶች እስከ ተቋማት እና

መጋዘኖች በሁሉም የኢትዮጽያ ክፍል

አሻራችንን አሳርፈናል

🔰ምን ይፈልጋሉ?

✂️ላሜራ መቁረጫ ÷ ማጠፊያ እና መብሻ ማሽኖች አሉን

🔗ፌሮ (ቶንዲኖ) ጥርስ ማስበጀት ወይንም ማሳጠፍ ካሰቡ ለሱም ማሽኑ በጃችን ነዉ

📐ማንኛዉንም የሞደፊክ ስራዎችን የሚሰሩ ብቁ ባለሙያዎችም አሉን

☎️ይደዉሉልን ያማክሩን

📍ኢትዮጵያ ዉስጥ የትም እንልክሎታለን

አድራሻችን፦
                    ቁ.1 መርካቶ
                    ቁ.2 ተክለሀይማኖት
                     ቁ.3 አየር ጤና

0904040477
0911016833

ETCONp - Ethiopian Construction Work Professionals

11 Dec 2024 17:10

👉በግንባታ ስራ ላይ ለተሰማሩ ተቋራጮችና አማካሪዎች የተዘጋጀው የዓቅም ግንባታ ስልጠና እየተሰጠ ነው

በአዲስ አበባ ዲዛይንና ግንባታ ስራዎች ቢሮ የተዘጋጀውና ትኩረቱን Construction Material Management እና Construction Human Resource Management ላይ ያደረገው የዓቅም ግንባታ ስልጠና እየተሰጠ ይገኛል፡፡

በቢሮው በተከታታይነት እየተሰጡ ከሚገኙና የኮንስትራክሽን ኢንዱስትሪውን ዓቅም ከሚያጎለብቱ ስልጠናዎች ውስጥ አንዱ በሆነው በዚሀ ስልጠና በአዲስ አበባ ከተማ የሚገኙ 250 ስራ ተቋራጮች እና አማካሪዎች  እየተሳተፉ ይገኛሉ፡፡

በቀጣይም በሁለተኛ ዙር Construction Claim and Dispute Resolution በሚል የስልጠና ርዕስ ላይ ስልጠናው አንደሚቀጥል ከቢሮው የዓቅም ግንባታ ዳይሬክቶሬት ያገኘነው መረጃ ያሳያል።

ቢሮው በርካታ ግንባዎችን በጥራት በማከናወን ለአገልግሎት እያዋለ ከመሆኑ ጎንለጎን የኢንዱስትሪውን ተዋንያን ዓቅም የሚያጎለብቱ ተከታታይ ስልጠናዎችን በመስጠት የከተማው ኮንስትራክሽን ዕድገት ላይ የላቀ የድርሻ እያበረከተ ይገኛል።

የአዲስ አበባ ዲዛይንና ግንባታ ስራዎች ቢሮ ኮሙኒኬሽን ጉዳዮች ዳይሬክቶሬት ታህሳስ 2/2017 ዓ.ም

@etconp

ETCONp - Ethiopian Construction Work Professionals

11 Dec 2024 09:33

👉Borrow material and Selected material

🚧In construction, borrow material is a naturally occurring material used to create fill and structural elements, while selected material is a material chosen to meet specific project requirements:

💫Borrow material

🏷A naturally occurring material that's excavated from a borrow pit and used to create fill and structural elements like embankments.

⏺Borrow material is selected to meet the project's grading, stability, and load-bearing capacity requirements.

💫Selected material

🏷A material chosen to meet specific project requirements. When selecting construction materials, factors to consider include strength, durability, cost, availability, and climate.

⭐️When selecting a borrow area, it's important to consider the quantity and quality of the fill, as well as the type of equipment that will be used.

@etconp

ETCONp - Ethiopian Construction Work Professionals

11 Dec 2024 05:30

#ADVERTISEMENTS

👉የ መንገድ ግንባታ ዲዛይን ስራ ማሰራት ይፈልጋሉ?

🏷በ መንገድ ስራ ላይ የአፈር መጠን እና ዋጋ ስሌት፣የ አስፋልት ምንጣፍ ስሌት፣ሙሉ የ ስትራክቸራል ድሮዊንግ ስራ በፎጥነት እና በ ጥራት ሰርተን እናስረክባለን።

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የ Girder Birdge Working Drawing ከነ 3D modelና ሙሉ ማተሪያል ቪድዮ በተጨማሪ ማነኛውም የመንገድ ስራ ፋይሎች እና ቴምፕሌቶች አሉን።

💫ከታች ባሉት ኣማራጮች ይጎብኙን

YouTube: musfide" rel="nofollow">http://www.youtube.com/@musfide

ድህረ ገፅ:- www.musfide.com

ቴሌግራም ገፅ:- /channel/musafide

ሊንክደን:- https://www.linkedin.com/in/musfide

ወይም በ +251905666664 ከደወሉ ያገኙናል🙏

ETCONp - Ethiopian Construction Work Professionals

10 Dec 2024 12:08

👉የስዊዝ ቦይን ይቀናቀናል የተባለው የ17 ቢሊየን ዶላር ግዙፍ ፕሮጀክት

🚧መርከቦች በስዊዝ ቦይ በኩል ለማለፍ የሚወስድባቸውን ጊዜ እስከ 15 ቀናት ማሳጠር ይችላል ተብሏል በአገልግሎቱ የግብጹን ስዊዝ ቦይ ይቀናቀናል የተባለ ግዙፍ የመንገድ ፕሮጀክት ወደ ተግባር ለመግባት የእቅድ ስራው በመጠናቀቅ ላይ እንደሚገኝ ተሰምቷል።

🏷17 ቢሊየን ዶላር ያወጣል የተባለው ሜጋ ፕሮጀክት ከ1198 ኪሎሜትር በላይ እርዝማኔ እንደሚኖረው ተነግሮለታል።

⏺ምዕራብ እስያ እና አውሮፓን በማገናኘት ያልተቆራረጠ የምርት ዝውውር ያሳልጣል የተባለ ሲሆን፤ ሁለቱ አህጉሮች ምርት ለመለዋወጥ በስዊዝ ቦይ ላይ ያላቸውን ጥገኝነት እንደሚቀንስ ተስፋ ተጥሎበታል የመንገድ ግንባታው መነሻውን ከቱርክ ሰሜናዊው ድንበር አድርጎ እስከ ደቡባዊ የፋርስ ባህረ ሰላጤ ድረስ ይዘረጋል።

⏺የመንገድ ፣ የባቡር ሀዲድ ፣ የወደብ እና የከተማ መንገዶችን ከሀገር አቋራጭ መንገዶች ጋር ማገናኘትን ያቀፈው ይህ ሜጋ ፕሮጀክት በእስያ እና በአውሮፓ መካከል ያለውን የጉዞ ጊዜ ለመቀነስ ያለመ ነው፡፡

⏺በሁለቱ አህጉራት መካከል ለሚገኝው ኢኮኖሚያዊ ግንኙነት ወሳኝ የንግድ መስመር ለሆነው የግብጹ ስዊዝ ቦይ ተፎካካሪ የመሆን እድሉም ከፍተኛ መሆኑ ተመላክቷል ።

ቱርክ ላይ የንግድ ኮሪደር ከዘረጋ በኋላ የኢራቅን ዓለም አቀፍ ተሰሚነት እንዲሁም የሀገር ውስጥ ኢኮኖሚዋን እና መሠረተ ልማትን ያጠናክራል ተብሎ ይጠበቃል።

የኢራቅ ጠቅላይ ሚኒስትር መሐመድ ሺዓ አልሱዳኒ ፕሮጀክቱ በዘላቂነት ከነዳጅ ጥገኝነት የተላቀቀ ኢኮኖሚን ለመገንባት የማዕዘን ድንጋይ ነው ያሉ ሲሆን፤ ኢራቅንና አካባቢውን የሚጠቅም ለቀጠናዊ ትስስር እና ለኢኮኖሚ ውህደት የሚኖረውም ድርሻ ከፍተኛ ስለመሆኑ አንስተዋል::

የኢራቁ “የግራንድ ፎው ፖርት” በዚህ መንገድ የሚተላለፉ ምርቶችን ጭነው የሚመጡ መርከቦችን ለማስተናገድ ሃላፊነት ተጥሎበታል፡፡

እንደ ሀገሪቱ የትራንስፖርት ሚኒስትር መረጃ ከሆነ ይህ ወደብ እስከ19.5 ሜትር ጥልቀት ያላቸው ትላልቅ የንግድ መርከቦችን ማስተናገድ ይችላል።

ከግብጹ ስዊዝ ካናል ጋር ሲነፃፀርም በጉዞ ጊዜ ከ12 እስከ 15 ቀናት መቆጠብ እንደሚችልም ተሰምቷል፡፡

ሚኒስትሩ ራዛቅ ሙሂቢስ አልሳዳዊ “በዚህ ፕሮጀክት ኢራቅ እና ቱርክ የጂኦፖለቲካዊ ጠቀሜታ ያገኛሉ፤ ነገር ግን ሙሉ በሙሉ ከፖለቲካ የጸዳ ኢኮኖሚ ላይ ያተኮረ ብቻ ይሆናል” ብለዋል፡፡

በሶስት አመት ለማጠናቀቅ እቅድ የተያዘለት ሜጋ ፕሮጀክት በበርካታ ተፅዕኖ ፈጣሪ ሀገራት ድጋፍ ያገኘ ሲሆን፤ አረብ ኤሚሬትስ እና የኳታር መንግስታት ባለፈው ክረምት በፕሮጀክቱ የጋራ ልማት ዙርያ ስምምነት ተፈራርመዋል።

Via Alain

@etconp

ETCONp - Ethiopian Construction Work Professionals

10 Dec 2024 09:40

👉The temperature of the asphalt plant mix depends on the type of asphalt mix being produced and the specifications of the project.

💫General guidelines are:

🚧1. Hot Mix Asphalt (HMA):

Mixing temperature: 275–325°F (135–165°C)

Typically used for road construction.

🚧2. Warm Mix Asphalt (WMA):

Mixing temperature: 200–275°F (95–135°C)

Preferred for environmentally friendly projects due to reduced emissions.

🚧3. Cold Mix Asphalt:

No heating is involved, as it uses emulsified asphalt or cutback.

The exact temperature depends on factors like:

The type of binder (e.g., viscosity and grade).

Aggregate properties.

Weather and environmental conditions.

Plant specifications and operational standards.

It’s essential to follow the mix design or code requirements (e.g., AASHTO, ASTM, or local standards) for accurate temperature ranges.

@etconp

ETCONp - Ethiopian Construction Work Professionals

15 Dec 2024 16:31

👉Pan-United የተባለ የሲንጋፖር ኮንክሪት አምራች ኩባንያ በኤሌክትሪክ ኃይል የሚንቀሳቀስ የጭነት ካሚዮን በሥራ ላይ ማዋሉ ተሰምቷል።

🏷ካምፓኒው በመግለጫው በኤሌክትሪክ የሚንቀሳቀሱ የኮንክሪት ሚክሰር ካሚዮኖችን መጠቀም የጀመረው በነዳጅ ኃይል ከሚንቀሳቀሱ የኮንክሪት ሚክሰር ካሚዮኖች ወደ ከባቢ አየር የሚለቀቀውን የተቃጠለ አየር ለማስቀረት እንዲሁም የድምጽ ብክለትን ለመቆጣጠር ጭምር በማሰብ ነው።

💫የድምጽ ብክለት በጣም ጥቅጥቅ ብሎ በሚገኘው የሲንጋፖር ሕዝብ ወሳኝ አንገብጋቢ፣ ጥያቄ ከሆነ ሰነባብቷል።

⭐️የኮንክሪት ካምዮኑን የገነባው SANY የተባለ የቻይና ታዋቂ የኮንክሪት ካምዮን አምራች ኩባንያ ሲሆን፣ መኪናው በቀን ለሁለት ጊዜ ቻርጅ በማድረግ ብቻ ቀኑን ሙሉ በአጥጋቢ ሁኔታ ሥራውን ማከናወን እንደሚችል ተጠቅሷል።

@etconp

ETCONp - Ethiopian Construction Work Professionals

14 Dec 2024 13:01

👉ELEMENTS OF ASPHALT CONCRETE PAVEMENT
.
➡️Asphalt concrete pavements also called flexible pavements are pavements built from asphalt- concrete (asphalt, coarse aggregate, filler (optional) , and fine aggregate).
They transmit loads imposed on the surface through lateral distribution of the applied loads over depth.
.
➡️The elements of an asphalt concrete pavement are:👇
.
▶️Surfacing: This is the uppermost layer of the
pavement. The primary function of the surfacing is
to provide a safe and comfortable riding surface for the traffic. It is also expected to protect the layers underneath from the effects of natural elements
(wind, rain, ice etc.) as well as the disintegrating
effects from vehicles skidding and braking on the roadway. In this regard, it should be impervious so
as to waterproof the underlying layers. In higher
types of roads, it may consist of two distinct sub
layers known as a wearing course and a base
course.
.
▶️ Base: this is the most important and normally the thickest layer of an asphalt concrete pavement on which the surfacing rests. It is the main load
spreading layer of the pavement. It bears the burden of distributing the applied surface loads in such a manner that the bearing Capacity of the subgrade is not exceeded. It should therefore be built from high quality materials capable of withstanding the applied loads on the surface. It consist of either: crushed stone or gravel, gravelly soils, decomposed rocks, sands or sand-clays stabilized with cement, lime or bitumen.
.
▶️Sub-base: The sub-base is the secondary load
spreading layer of the pavement underlying the
base. It may or may not be present in a pavement
depending on the purpose for which it is to be
used. It helps to distribute the applied loads to the
subgrade. Its stresses are less than those of the
base. Therefore its materials can be of lower quality than those of the base but must always be stronger than those of the subgrade. It is usually coarse grained or granular to act as a drainage layer for passage of any moisture which falls during
construction or after construction to the highway drainage system.
.
▶️Subgrade: this is the upper layer of the natural soil over which the pavement is being built. It may be undisturbed local material exposed by excavation or soil excavated elsewhere and placed into an embankment. It is usually compacted during
construction to give added stability.

@etconp

ETCONp - Ethiopian Construction Work Professionals

14 Dec 2024 10:01

👉Factors Affecting Concrete Compressive Strength

🏷Among the large number of factors affecting the compressive strength of concrete.

💫the following are probably the most important for concretes used in structures.

🚧1.  Water/cement ratio

⏺The strength of concrete is governed in large part by the
ratio of the weight of the water to the weight of the cement for a given volume of concrete.

⏺A lower water/cement ratio reduces the porosity of the hardened concrete and thus increases the number of interlocking solids.

🚧2.  Type of cement

⏺Traditionally, five basic types of Portland cement have been produced:

Normal, Type I:
Modified, Type II:
High early strength, Type III:
Low heat, Type IV:
Sulfate resisting, Type V:

🚧3. Supplementary cementitious materials

⏺Sometimes, a portion of the cement is replaced by materials such as fly ash, ground granulated blast-furnace slag, or silica fume to achieve economy, reduction of heat of hydration, and, depending on the materials, improved workability.

🚧4. Aggregate

⏺The strength of concrete is affected by the strength of the aggregate, its surface texture, its grading, and, to a lesser extent, by the maximum size of the aggregate.

🚧5.  Mixing water

⏺There are no standards governing the quality of water for use in mixing concrete.

⏺In most cases, water that is suitable for drinking and that has no pronounced taste or odor may be used

🚧6. Moisture conditions during curing

⏺The development of the compressive strength of concrete is strongly affected by the moisture conditions during curing.

⏺Prolonged moist curing leads to the highest concrete strength

🚧7. Temperature conditions during curing

⏺The effect of curing temperature on strength gain for specimens placed and moist-cured for 28 days under the constant temperatures shown in the figure and then moist-cured at 73°F.

⏺The 7- and 28-day strengths are reduced by cold curing temperatures, although the long-term strength tends to be enhanced.

🚧8. Age of concrete.

Concrete gains strength with age

🚧9. Maturity of concrete

⏺Young concrete gains strength if the concrete remains about a threshold temperature of to or to Maturity is the summation of the product of the difference between the curing temperature and the threshold temperature, and the time the concrete has cured at that temperature

@etconp

ETCONp - Ethiopian Construction Work Professionals

14 Dec 2024 06:01

👉What are efficient ways to sound proof A room?
 
🚧Double, Air-gapped Walls

⏺This one was key, especially to keep outside sound out and instrument sounds in (like my drums)! Inside of the cinder-block garage, we built a room using 2×4’s (or maybe 2×6’s). We then built an ever-so-slightly smaller room inside of it, leaving about 4″ between the outer wall and the inner one. This air-gap helped block transmission of sound. Inside each wall we used fiberglass insulation.

🚧Double Sheet Rock

⏺On the walls mentioned above we used two sheets of 5/8″ sheet rock, not just one. This provided more mass, also good for blocking sound.

🚧Foam Egg Crates, Foam Rubber, Carpet

⏺We got lucky and found a dozen sheets of foam egg crate at a building auction and bought it for what one sheet of it would normally cost. We covered the walls in it. We used thick carpet on the floor, and some adhesive foam rubber sheets on the door and outside wall.

🚧Adjacent Mixing tech room

⏺We put the mixing consoles, PC, monitors, and other gear that generated noise in an adjacent room. If we were doing it “right” I probably would have wired up audio jacks to totally isolate the two rooms, but instead we just put a large conduit between the rooms to run the cabling. I stuffed the conduit full of rags to block the PC fan sounds.


🚧Angled Window

⏺We put a window between the studio and the mixing room so the tech could see the band and vice versa.

To prevent the sound from going through, we used two panes of glass.

The one on the mixing room side was mounted in a normal up-and-down position.

The second pane, on the studio side was mounted at about a 45 degree angle, so sounds would be deflected down toward the floor. E.g. (Studio) \ | (Mixing Room).

🚧AC outside of the studio

⏺The studio got pretty hot with all that insulation, so we had to add a window AC unit.

Putting it in the studio was a no-go, so we mounted it in a window in the garage (outside the studio’s double walls) and then fashioned some ducting to run the cool air into the back corner of the studio.

This kept the compressor noise out.

🚧Treating the gear

▶️Finally, we would pick up rattling from drum stands, clicks of guitar pedals, snare vibrations, etc. We fixed this as we went – things like foam, cardboard, electrical tape, and rags all helped.

@etconp

ETCONp - Ethiopian Construction Work Professionals

14 Dec 2024 05:00

Intercon Construction Chemicals 
    
👉 Authorized agent of MC (Conmix), Weber and SIMENTEK

● Concrete Admixtures
● Bonding Agents
● Waterproofings
● Concrete Repair, Grout   
● Tile Adhesive & Tile Joint Fillers 
● Wall Putty, Prime Coat, Rush Coat
● Quartz, Contextra
● Specialized paints (Thermal and Insulation Paints, Street and Playground Paints)
● Floor hardener, Epoxy              
● Geotextiles, Geo-membranes and other construction chemicals and materials

Tel: 0961955555 or 0961955559
Address: Signal, around signal mall

ETCONp - Ethiopian Construction Work Professionals

13 Dec 2024 08:42

👉አለምአቀፍ የህንጻ ንድፍ ውድድር
ዝርዝሩን ከታች ይመልከቱ።

💫ውድድሩ ለተማሪዎች፣ ለህንጻነዳፊዎች፣ ለመሀንዲሶች እና ለሌሎችም ክፍት ነው።

⭐️𝐍𝐄𝐖 𝐊𝐀𝐈𝐑𝐀 𝐋𝐎𝐎𝐑𝐎 𝐀𝐑𝐂𝐇𝐈𝐓𝐄𝐂𝐓𝐔𝐑𝐄 𝐂𝐎𝐌𝐏𝐄𝐓𝐈𝐓𝐈𝐎𝐍

2025’s Edition – Nursery School in Africa

We are thrilled to announce the opening of the 2025 Kaira Looro Architecture Competition! This year’s theme is the design of a Nursery School for rural areas in Sub-Saharan Africa. The aim is to create a safe, inclusive, and sustainable educational architeture where children can learn, play, and grow in an inspiring environment, promoting their development and well-being.

Participation is open to architects, students, designers, engineers, and anyone eager to contribute to this global cause. You can participate individually or as a team.

𝐀𝐖𝐀𝐑𝐃𝐒
As per tradition, the competition also aims to launch young architectural talents into the international arena by awarding prestigious prizes and professional growth opportunities. Some of the most significant awards include:
𝟏𝐬𝐭 𝐏𝐫𝐢𝐳𝐞: €5,000 + Internship at Kengo Kuma & Associates in Japan + Construction.
𝟐𝐧𝐝 𝐏𝐫𝐢𝐳𝐞: €2,000 + Internship at one of the following: Benedetta Tagliabue EMBT (Spain), Amanda Levete Architects (UK), or SBGA Blengini Ghirardelli (Italy).
𝟑𝐫𝐝 𝐏𝐫𝐢𝐳𝐞: €1,000 + Internship at one of the following: EMBT (Spain), ALA (UK), or SBGA (Italy).

Others awards: 2 honourable mentions, 5 special mentions, 20 finalists, 20 Top 50, International visibility, Exhibits in exhibitions, events and seminars, official certificates and many others.

𝐉𝐔𝐑𝐘
The jury of Kaira Looro is made up of some of the world’s most renowned and award-winning architects worldwide, such as:Kengo Kuma (Kengo Kuma & Associates), Benedetta Tagliabue (Benedetta Tagliabue – EMBT Architects), Rafael Aranda, Carme Pigem, Ramón (RCR Arquitectes), Mario Cucinella (Mario Cucinella Architects), David Adjaye (Adjaye Associates),  Amanda Levete (Amanda Levete Architects), Manuel Aires Mateus (Aires Mateus Architects), Giancarlo Mazzanti (El Equipo Mazzanti), Agostino Ghirardelli (SBGA | Blengini Ghirardelli), Raul Pantaleo (TAM Associati), Emmanuelle Moureaux (Emmanuelle Moureaux Architecture + Design), Saad El Kabbaj, Driss Kettani, Mohamed Amine Siana

The Early Registration will open on 10th January 2024.

For this edition we are proud to collaborate with leading global media partners, including Archilovers, The Plan, Casabella, DesignBoom, Tectonica, World Architecture Community, Platform, Worl Architects, Amazing Architecture, A+E, Archiportale, Apsaidal, Go Architecture, E-Archtiect, Architektura & Biznes, Uche Okeke Legacy, Toffu, Archetype, Competitions Archi, Architektura, Wettbewrbe, Poject Baikal, Ru Archi.

All competition proceeds will be donated to support charity projects by Balouo Salo in Africa aimed to improve life condition if rural communities.

Join the competition and help build a brighter future.
Register now at www.kairalooro.com

@etconp

ETCONp - Ethiopian Construction Work Professionals

12 Dec 2024 16:25

👉High strength concrete

➡High strength concrete (HSC) may be defined as concrete with a specified characteristic cube
strength between 60 and 100 N/mm , although higher strengths have been achieved and used.

▶Strength levels of 80 to 100 N/mm and even higher are being used for both precast and in-situ work in All over the world.

▶The main applications for HSC in-situ concrete construction are in offshore structures, columns for tall buildings, long-span bridges and other highway structures

▶The main advantage is the reduction in size of compression elements and/or the amount of longitudinal reinforcement required.

▶The methods and technology for producing high strength concrete are not substantially different from those required for normal strength concrete.
The target water/cement ratio should be in the range 0.30–0.35 or even lower.

⭐️HSC can be produced with all of the cements and cement
replacements (additions).
A wide range of aggregates can be used though crushed rock aggregates (of suitably high crushing value) are preferable.
Superplasticisers / high range water reducers should be used to achieve maximum water reduction, although plasticisers may be adequate for lower strength HSC (C-60 to C-70)

⏺Silica fume (microsilica) or metakaoline can be used to enhance the strength at high levels (C80 and above), but is not needed generally at the lower end (C60 to C80).

💫The terms "High performance concrete" and "High strength concrete" are often taken to mean the same thing.

⏺However, as indicated, "High performance" strictly relates to a concrete that has been designed to have good specific characteristics, such as high resistance to chloride ingress or high abrasion resistance.

▶️As a result it may also have a high strength, but this is not the main consideration.

@etconp

ETCONp - Ethiopian Construction Work Professionals

12 Dec 2024 10:21

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ETCONp - Ethiopian Construction Work Professionals

12 Dec 2024 06:58

👉ስለ STAIRS ትንሽ ጠቃሚ ሃሳብ እንማማር 👇

🚧Calculations for the construction of stairs, ramps and guards are set out in various national building regulations.

💫The guidelines here are based on German standards.

▶️Dwellings with no more than two flats must have an effective stair width of at least 0.80 m and 17/29 rise-to-tread ratio. Stairs which are not strictly covered by building regulations may be as little as 0.50m wide and have a 21/21 ratio.

⏺Stairs governed by building regulations must have a width of 1.00m and a ratio of 17/28.

⏺In high rise flats they must be 1.25 m wide

⏺The length of stair runs from 23 steps up to 18 steps --> @ Landing length = n times the length of stride + 1 depth of step (e.g. with a rise-to-tread ratio of 17/29 = 1 x 63 + 29 = 92 cm or 2 x 63 + 29 = 1.55 m).

⏺Doors opening into the stairwell must not restrict the effective width.

▶️The time required for complete evacuation must be calculated for stair widths in public buildings or theatres. Such staircases or front entrance steps are climbed slowly, so they can have a more gradual ascent.

▶️A staircase at a side entrance or emergency stairs should make a rapid descent easy.

▶️The experiences one has of ascending and descending stairs varies greatly with the stair design, for example there is a significant difference between an interior domestic design and a grand flight of entrance steps.

⏺Climbing stairs takes on average seven times as much energy as walking on the flat.

⏺From the physiological point of view, the best use of 'climbing effort' is with an angle of incline of 30° and a ratio of rise of:  rise of step/going of step; r/g= 17/29.

▶️The angle of rise is determined by the length of an adult's stride (about 61-64cm). To arrive at the optimum rise, which takes the least energy, the following formula can be applied: 2r+ g= 63cm (1 stride)

▶️In the dimensioning and design of flights of stairs, the function and purpose of the staircase is of primary importance, taking in the factors mentioned above.

▶️Not only is the gaining of height important, but also the way that the height is gained. For front door steps in frequent use, low steps of 16 x 30cm are preferable.

⏹However, stairs in a workplace, or emergency stairs, should enable height to be gained rapidly.

⏺Every main staircase must be set in its own continuous stairwell, which together with its access routes and exit to the open air, should be designed and arranged so as to ensure its safe use as an emergency exit. The width of the exit should be  greater than or equal tothe width of the staircase.

@etconp

ETCONp - Ethiopian Construction Work Professionals

12 Dec 2024 05:51

Intercon Construction Chemicals 
    
👉 Authorized agent of MC (Conmix), Weber and SIMENTEK

● Concrete Admixtures
● Bonding Agents
● Waterproofings
● Concrete Repair, Grout   
● Tile Adhesive & Tile Joint Fillers 
● Wall Putty, Prime Coat, Rush Coat
● Quartz, Contextra
● Specialized paints (Thermal and Insulation Paints, Street and Playground Paints)
● Floor hardener, Epoxy              
● Geotextiles, Geo-membranes and other construction chemicals and materials

Tel: 0961955555 or 0961955559
Address: Signal, around signal mall

ETCONp - Ethiopian Construction Work Professionals

11 Dec 2024 12:31

👉Bleeding & Segregation in Concrete

🚧Bleeding

➡️Bleeding is a form of segregation in which water present in the concrete mix is pushed upwards due to the settlement of cement and aggregate.

➡️The specific gravity of water is low, due to this water tends to move upwards.

➡️Bleeding ordinarily occurs in the wet mix of concrete.

➡️The Prime factor for bleeding in concrete is the high dosage of Water cement ratio.

➡️Higher water-cement ratio weakens concrete and leads to excessive bleeding.

➡️The bleeding in concrete is not harmful if the rate of evaporation of water is equal to the rate of bleeding.

➡️Normal bleeding is quite good, and it enhances the workability of concrete.

➡️When the concrete is fully plastic, bleeding may not cause much harm. However, concrete is still in the plastic stage later it is subsidized and compacted.

🚧Segregation

▶️Segregation is the “Separation of constituent materials in concrete"

➡️In concrete technology segregation is of three types

⏺1. Separation of Coarse aggregate from the concrete mixture.

⏺2. Separation of Cement pastes from the concrete during its plastic stage.

⏺3. Separation of water from the concrete mix (Bleeding in concrete)

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@etconp

ETCONp - Ethiopian Construction Work Professionals

11 Dec 2024 06:31

👉Curing Time According to ACI 🕒🏗️

⭐️The American Concrete Institute (ACI) provides specific guidelines for curing to ensure concrete achieves its designed strength and durability:

💫1. Beam 🪵

Initial Curing: 24-48 hours 🌧️🔒

Final Curing: Minimum 7 days for normal cement  or 3 days for high-early-strength cement.

Recommended as per ACI 308R-16.

💫2. Column 🏛️

Initial Curing: 24-48 hours 🌧️

Final Curing: Same as beams, 7 days minimum for normal cement or 3 days for high-early-strength cement.

💫3. Slab 🏠

Initial Curing: 24-48 hours 🌧️🔒 (Cover with plastic sheets, wet burlap, or curing blankets).

Final Curing: Minimum 7 days (ponding or sprinkling for slabs is highly recommended).

💡 According to ACI 308-92, the curing period can be adjusted based on factors like cement type, ambient conditions, and strength requirements. Proper curing is vital for reducing shrinkage, cracking, and ensuring durability!

@etconp

ETCONp - Ethiopian Construction Work Professionals

10 Dec 2024 18:31

👉አዲስ የመጽሀፍ ጥቆማ

💫Modernism in Africa.

⭐️በዘጠኝ አፍሪካ አገራት ያሉትን የዘመናዊውን ዘይቤ ህንጻ ንድፍ የተተነተነበት እጅግ ጠቃሚ መጽሀፍ በበይነ መረብ በነጻ የተለቀቀ ሲሆን  መጽሀፉን ከላይ በተያያዘው ፒዲኤፍ  አውርዶ ማንበብ ይቻላል፡፡

@etconp

ETCONp - Ethiopian Construction Work Professionals

10 Dec 2024 11:02

👉ስራ ፈላጊዎች በተለይም አዲስ ምሩቃን ስራ እናገናኛለን ከሚሉ አጭበርባሪዎች ተጠንቀቁ‼️

@etconp

/channel/ETCONpWORK/2714?single

ETCONp - Ethiopian Construction Work Professionals

10 Dec 2024 06:14

👉What is horizontal directional drilling?

🏷Horizontal Directional Drilling (HDD) is a construction technique whereby a tunnel is drilled under a waterway or other designated area, and a pipeline or other utility is pulled through the drilled underground tunnel.

⏺The underground tunnel follows an arc line from the entry point, down under the special crossing area, and then resurfaces on the opposite side.

⏺Using advanced technology and highly trained technicians, a drill head guides the drilling pipe electronically to ensure the angle, depth, and exit point adhere to carefully designed engineering plans.

▶️Throughout the drilling process, the tunnel is kept open and lubricated by circulating a watery mud-slurry mixture, typically composed of about 95% water and 5% bentonite clay—a natural, non-toxic substance.

⏺The drilling mud also helps coat the walls of the tunnel and remove drill cuttings.

⭐️When the tunnel is 12 inches wider than the diameter of the pipe going through it, the welded pipeline segment can be pulled through the underground arched tunnel from one end to the other end.

⏺These pipeline segments are typically made of thicker steel and have a protective first layer of coating to prevent corrosion and a second abrasionresistant coating to protect the pipe during the pull through the tunnel.

💫The two ends of the pipeline segment can then be welded together with the rest of that pipeline system.

@etconp