How to do BRICK BAT COBA at Building Terrace


                                 How to do BRICK BAT COBA
PREPARATORY WORK
  • Plaster of parapet, Mumty machine room, Water tank, Expansion joint treatment at terrace level must be completed before start of water proofing
  • Scaffolding or left out material should be removed
  • Any debris or deposit on the surface should be removed.
  • The surface must be thoroughly cleaned and free from dust, dirt loose materials, oil or grease.
  • Level should be marked on parapet minimum 600 above terrace
  • All rain water pipe is to be fixed
  • Ridge line to be marked
PROCEDURE OR METHODOLOGY:
  • Convex gola of 1:2:4cement concrete with water proofing compound shall be prepared along parapet, mumty and shaft wall.
  • Uniform layer of1:2cement slurry with water proofing compound shall be applied on terrace.
  • Uniform layer of 20mm thick 1:4 cement mortar is to be laid.
  • Brick bats shall be laid as per level on edge with 12mm gap all around.
  • Allow brick bats in cement mortar to set for 3 days and curing to be carried out for same period.
  • After three days, 1:4 cement mortar shall be filled in 12 mm gaps.
  • 20mm 1:4 cement mortar is to be spread over the brick bat
  • Concave gola is to be made all along the parapet up to 300 mm
  • After 12 hrs mason thread impression to be marked over finish surface at interval of 300 mm both ways
  • Prepare khurra at RWP location
Inspection
  • Slab should be moist before application of cement slurry
  • Level should be marked all around before the start of work
  • Impression shall be dark deep enough
  • Ponding shall be carried out for 7 days for testing.


Comments

Post a Comment

Popular posts from this blog

What is the Difference between OPC and PPC now days

Image
  n this post, I am going to explain the major differences among the OPC and PPC [Ordinary Portland Cement and Pozzolana Portland Cement]. Difference between OPC and PPC : If you are viewing the below table in Mobile device Scroll horizontally for better view . Description OPC PPC Definition The word OPC stands for Ordinary Portland Cement The word PPC stands for Pozzolana Portland Cement Raw Material Ordinary Portland cement is a mixture of limestone, raw argillaceous, calcareous materials and gypsum. Pozzolana cement is manufactured by mixing 30% of pozzolana to Ordinary Portland cement clinkers. Composition OPC comprises of huge amount of Limestone powder in it The pozzolana is a material which is formed due to the volcanic eruptions. It is a siliceous material having about 80% clay in it. Durability The durability of concrete made by OPC is less when compared with PPC The main motto of adding Pozzolana Materials to OPC is to enhance the Durability of Concrete Initial Strength T...
Read more

What Is the difference between Pre-tension & Post-tension

Image
What Is the difference between Pre-tension & Post tension                                in Sleepers/Beam/Girders Post-tensioning and Pre-tensioning     The two techniques are utilized in under pre-stressing procedure which has a small number of peripheries above the conventional non-stressed structures such as higher span to depth ratio, greater shear capacity & moment. Such techniques are usually implemented in the formation of sleepers,  P.S.C  girders, & more…. <script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-7854716011105726"      crossorigin="anonymous"></script> Pre–Tensioning : In such technique the concrete is pre-stressed with tendons prior to it is positioning in place. This technique is created because of bonding among the concrete as well as steel tendons. Pre tensioning is favored at the ti...
Read more

How to Aadhaar- & Voter ID Link before Election I चुनाव से पहले Aadhaar Card से जुड़े Voter ID Card, घर बैठे ऐसे करें लिंक I

Image
Aadhaar-Voter ID Link : चुनाव से पहले Aadhaar Card से जुड़े Voter ID Card, घर बैठे ऐसे करें लिंक Aadhaar-Voter ID Link : चुनाव से पहले Aadhaar Card से जुड़े Voter ID Card, घर बैठे ऐसे करें लिंक |  जैसा की आप सभी जानते हैं कि उत्तर प्रदेश में विधानसभा चुनाव 2022 आने वाले हैं, जिससे पहले कैबिनेट बैठक (Union Cabinet) में एक बेहद ही जरूरी बिल को मंजूरी दी गई है! लागू किए गए इस नए प्रवाधान के अनुसार आने वाले समय में वोटर कार्ड (Voter Card) को आधार नंबर (Aadhaar Card) से लिंक करना जरूरी होगा! चुनाव से पहले Aadhaar Card से जुड़े Voter ID Card Aadhaar-Voter ID Link इस नए प्रवाधान का सीधा सा मकसद ये है कि देश में चुनाव के वक्त वोटिंग (Voting) में सुधार लाना है! बताया जाता है कि जैसा अक्सर ही चुनावों में फर्जी वोटिंग (Fake Voting) होती थी, जिसकी रोक-थाम के लिए इसको लागू किया गया है! इससे चुनाव में फर्जी वोटिंग को रोकने में काफी मदद मिलेगी! ऐसे में कोई भी व्यक्ति चुनाव में दो बार वोट नहीं कर पाएगा! इससे पहले बीते बुधवार को केंद्रीय मंत्रिमंडल (Central Cabinet) ने चुनाव सुधारों को लेकर ये अहम ...
Read more