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JOINTS making details of  DBM and BC        Joints play a most important roll in laying of DBM /BC. if no proper joints are provided it (joint) may open and allow to flow of water to the base course(WMM Layer) and cause damage the pavement. So today we shall learn about offsets and thickness of joints( in loose state). To know more information about Dense Bituminous Macadam (DBM) , please click on below link 🔗  https://www.gyanofcivilengineering.com/2019/08/bituminous-macadam-technical.html डीबीएम / बीसी के बिछाने में जोड़ों का सबसे महत्वपूर्ण रोल होता है।  यदि  उचित जोड़ों(joints) को प्रदान नहीं किया जाता है, तो यह (संयुक्त-joint) खुल सकता है और बेस कोर्स (WMM लेयर) में पानी के प्रवाह की अनुमति देता है और pavement को नुकसान पहुंचाता है।  इसलिए आज हम ऑफसेट और जोड़ों की मोटाई (ढीली अवस्था में) के बारे में जानेंगे।   Where joints made, the material shall be fully compacted and the joint made flush in one th...

 DENSE BITUMINOUS MACADAM(DBM) DBM acts as a bituminous  base course and thickness of a single compacted  layer shall be 50 mm to 100 mm.  In this article we shall discuss about Technical specifications of DBM (Dense Bituminous Macadam), layer thickness, physical requirements, aggregate size, grades and its measurements A-Scope : The work shall consist of construction in a single layer of DBM on a previously prepared base or sub-base. The thickness of a single layer shall be 50 mm to 100 mm. B - Material : The choice of binder material shall be stipulated in the contract or by the engineer, where viscosity grades of bitumen are specified, they are referred to by a designation in accordance with IS: 73. Where modified bitumen is specified, it shall conform to the requirements of IRC:SP:53 and IS:15462. Selection criteria for viscosity grade bitumen based on highest and lowest daily mean temperatures at a particular site are ]given in table no -1. ...