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Showing posts from December, 2020

Detailing Concepts of capping beam & Lining walls

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 Detailing Concepts of capping beam & Lining walls What is capping beam? 1 Capping beam is constructed over pile walls i.e. secant, contiguous and sheet pile.  2 To distribute the loads from vertical elements to pile wall.  3 Can resist lateral loads along with piled walls or can just be a cap of piled walls.  4 Can act as boundary of site.  Capping beam. Detailers should know the following things before they start to detail a capping beam. 1 Construction sequence (or) type construction i.e. Top down / Bottom Up.  2 Connectivity between capping beam and adjacent elements like lining walls.  3 Details at pile cut-off level if it is sheet pile. 4The bottom cover should be equal or greater than pile cut off .  5The main rebar (i.e. top and bottom) can be detailed for stock length and lapped. Unless the capping beam is designed specially for any site conditions. If there are any planted columns/walls that need to be considered.  6 Sometimes t...

Standard Shape Codes for UK detailing

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 Standard Shape Codes General Notes  The values for minimum radius and end dimensions, r and A respectively, as specified in Table B.1, shall apply to all shape codes.  The dimensions in parentheses are the free dimensions. If a shape given in this table is required but a different dimension is to allow for the possible deviations, the shape shall be drawn out and given the shape code 99 and the free dimension shall be indicated in parentheses. The length of straight between two bends shall be at least 4d, (see Figure 6 BS 86666). BS 86666, Figures 4, 5 and 6 should be used in the interpretation of bending dimensions. Notes  1 The length equations for shapes 14, 15, 25, 26, 27, 28, 29, 34, 35, 36 and 46 are approximate and where the bend angle is greater than 45º, the length should be calculated more accurately allowing for the difference between the specified overall dimensions and the true length measured along the central axis of the bar. When the bending angles a...

Sectional Area of Reinforcement

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 Sectional Area of Reinforcement

Radius of Bending

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 Radius of Bending Reinforcement shall be supplied as straight if radius of curved bars exceed that specified in this table.     

Minimum Radius, Former Dia. & Bend Allowances

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 Minimum Radius, Former Dia. & Bend Allowances

Minimum and Maximum area of steel

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 Minimum and Maximum area of steel Note :  1. Minimum and maximum area of steel shown here are in percentage of steel required for cross-sectional concrete area (Ac).  2. Percentage of steel shown only for fy = 500Mpa.  3. Percentage of steel shown only for main reinforcement .  4. Percentage of steel for all other case should be referred in the corresponding codes. 

Closed' Detailing Tolerance

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 Closed' Detailing Tolerance

Lap Table as per EC2

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 Lap Table as per EC2