Reinforcement detailing - Revision history

Designing Buildings at 07:20, 21 January 2021

2021-01-21T07:20:55Z

← Older revision		Revision as of 07:20, 21 January 2021
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	* [http://www.constructionnews.co.in/placing-of-reinforcement-bars.html ARRANGEMENT OF REINFORCEMENT IN DIFFERENT STRUCTURAL MEMBERS]		* [http://www.constructionnews.co.in/placing-of-reinforcement-bars.html ARRANGEMENT OF REINFORCEMENT IN DIFFERENT STRUCTURAL MEMBERS]

−	[[Category:Articles_needing_more_work]] [[Category:Publications_/_reports]] [[Category:Design]]	+	[[Category:Articles_needing_more_work]] [[Category:DCN_Commentary]] [[Category:DCN_Product_Knowledge]] [[Category:Publications_/_reports]] [[Category:Design]]

Designing Buildings: moved REINFORCEMENT DETAILING GUIDE to Reinforcement detailing

2019-10-10T10:49:09Z

moved REINFORCEMENT DETAILING GUIDE to Reinforcement detailing

← Older revision

Revision as of 10:49, 10 October 2019

Designing Buildings at 10:48, 10 October 2019

2019-10-10T10:48:46Z

← Older revision		Revision as of 10:48, 10 October 2019
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	* When dowels are used, their diameter should not go beyond the diameter of the column bars in excess of 3 mm.		* When dowels are used, their diameter should not go beyond the diameter of the column bars in excess of 3 mm.
	* When bent up bars are used, their participation towards shear resistance should not surpass 50% of the total shear to be countered. Single bent up bars alias cranked should not be used in earthquake resistance structures.		* When bent up bars are used, their participation towards shear resistance should not surpass 50% of the total shear to be countered. Single bent up bars alias cranked should not be used in earthquake resistance structures.
		+
		+	= Related articles on Designing Buildings Wiki =
		+
		+	* Carbon fibre.
		+	* Concrete.
		+	* Concrete-steel composite structures.
		+	* Concrete vs. steel.
		+	* Formwork.
		+	* Grouting in civil engineering.
		+	* Metal fabrication.
		+	* Prestressed concrete.
		+	* Rebar.
		+	* Reinforced concrete.
		+	* Structural steelwork.
		+	* Substructure.
		+	* Stainless steel.
		+	* Types of column.
		+	* Weathering steel.

	= External references: =		= External references: =

Designing Buildings at 10:47, 10 October 2019

2019-10-10T10:47:51Z

← Older revision		Revision as of 10:47, 10 October 2019
Line 1:		Line 1:
		+	To help develop this article, click 'Edit this article' above.
		+
	= Introduction =		= Introduction =

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	* The position of construction joints should remain at the point of minimum shear approximately at mid or adjacent to the mid points. It should be developed vertically and not in a sloped manner.		* The position of construction joints should remain at the point of minimum shear approximately at mid or adjacent to the mid points. It should be developed vertically and not in a sloped manner.

−	= Do's for ~~Beam~~ and ~~Slab Reinforcement Detailing~~ =	+	= Do's for beam and slab reinforcement detailing =

	* When splices are arranged in bars, they should remain out of the sections of maximum stresses as far as possible and should be staggered.		* When splices are arranged in bars, they should remain out of the sections of maximum stresses as far as possible and should be staggered.
	* When the depth of beams surpass 750 mm in case of beams devoid of torsion and 450 mm with torsion provide face reinforcement according to IS456-2000.		* When the depth of beams surpass 750 mm in case of beams devoid of torsion and 450 mm with torsion provide face reinforcement according to IS456-2000.
−	* Deflection in slabs/beams is ~~minimized~~ with the compression reinforcement.	+	* Deflection in slabs/beams is minimised with the compression reinforcement.
	* Only closed stirrups are recommended for transverse reinforcement. For members susceptible to torsion and for members susceptible to reversal of stresses similar to seismic forces.		* Only closed stirrups are recommended for transverse reinforcement. For members susceptible to torsion and for members susceptible to reversal of stresses similar to seismic forces.
	* To adapt bottom bars, secondary beams should be created shallower than primary beams, at least by 50 mm.		* To adapt bottom bars, secondary beams should be created shallower than primary beams, at least by 50 mm.
Line 38:		Line 40:

	* A reinforced column should contain minimum six bars of longitudinal reinforcement to be used in transverse helical reinforcement for circular sections.		* A reinforced column should contain minimum six bars of longitudinal reinforcement to be used in transverse helical reinforcement for circular sections.
−	* At least four bars one at each ~~corners of the~~ should be provided in case of rectangular sections.	+	* At least four bars one at each corner should be provided in the case of rectangular sections.
−	* Retain exterior dimensions of ~~column~~ fixed so far as possible to use the forms again.	+	* Retain exterior dimensions of columns fixed so far as possible to use the forms again.
	* 2 grades of vertical bars should not be used in similar component.		* 2 grades of vertical bars should not be used in similar component.

−	= Do ~~Not~~'s ~~General~~ =	+	= Do not's general =

−	* Reinforcement should not ~~expand~~ over an expansion joint and the break among the sections should be finished.	+	* Reinforcement should not extend over an expansion joint and the break among the sections should be finished.
	* Flexural reinforcement should not preferably be discontinued in a tension zone.		* Flexural reinforcement should not preferably be discontinued in a tension zone.
	* Bars greater than 36 mm dia should not be bundled.		* Bars greater than 36 mm dia should not be bundled.
−	* Lap splices should not be utilised for bars greater than 36 mm dia. ~~Except~~ where welded.	+	* Lap splices should not be utilised for bars greater than 36 mm dia. except where welded.
	* When dowels are used, their diameter should not go beyond the diameter of the column bars in excess of 3 mm.		* When dowels are used, their diameter should not go beyond the diameter of the column bars in excess of 3 mm.
−	* When bent up bars are used, their participation towards shear resistance should not surpass 50% of the total shear to be countered. Single bent up bars alias cranked should not used in ~~case of~~ earthquake resistance structures.	+	* When bent up bars are used, their participation towards shear resistance should not surpass 50% of the total shear to be countered. Single bent up bars alias cranked should not be used in earthquake resistance structures.

	= External references: =		= External references: =
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	* [http://www.constructionnews.co.in/placing-of-reinforcement-bars.html ARRANGEMENT OF REINFORCEMENT IN DIFFERENT STRUCTURAL MEMBERS]		* [http://www.constructionnews.co.in/placing-of-reinforcement-bars.html ARRANGEMENT OF REINFORCEMENT IN DIFFERENT STRUCTURAL MEMBERS]

−	[[Category:Publications_/_reports]] [[Category:Design]]	+	[[Category:Articles_needing_more_work]] [[Category:Publications_/_reports]] [[Category:Design]]

Designing Buildings at 10:44, 10 October 2019

2019-10-10T10:44:19Z

← Older revision		Revision as of 10:44, 10 October 2019
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−	= ~~REINFORCEMENT DETAILING GUIDE~~ =	+	= Introduction =

−	~~[http://www.constructionnews.co.in/images/RC-Detailing.jpg http://www.constructionnews.co.~~in~~/images/RC-Detailing~~.~~jpg]~~	+	Reinforcement detailing plays an important role in construction to resist the collapse of buildings from defective connection or detailing.

−	Reinforcement Detailing plays an important role in construction as perfect detailing of engineering design in planning and engineering process can resist the collapsing of the building resulting from defective connection or detailing. Detailing also maintains the safety of the structure.	+	Detailing can be done for the following Reinforced Cement Concrete (RCC) members:
−		+
−	~~Reinforcement Detailing is important for the steel structures as well as RCC members since it translates all the mathematical expressions and equations results.~~	+
−		+
−	~~===~~ Detailing can be done the ~~for~~ following RCC members :~~- ===~~	+

	* Slabs with or without openings (rectangular, circular, non-rectangular pyramid slab, triangular slab etc.)		* Slabs with or without openings (rectangular, circular, non-rectangular pyramid slab, triangular slab etc.)
	* Beams with or without openings (shallow and deep beams)		* Beams with or without openings (shallow and deep beams)
−	* Columns with different shapes ~~like~~ rectangular, L, T, circular, octagonal, cross etc.	+	* Columns with different shapes, such as; rectangular, L, T, circular, octagonal, cross etc.
−	* ~~Detailing of foundations~~	+	* Foundations
−	* ~~Detailing for gravity~~ loads ~~differ from the~~ lateral loads particularly for the seismic forces.	+	* Gravity loads and lateral loads (particularly for the seismic forces).
−	* ~~There is also other type of detailing necessary for the~~ rehabilitation and strengthening of damaged structures.~~<br />~~	+	* The rehabilitation and strengthening of damaged structures.
−	~~<br />~~	+
−	~~ALSO READ :~~	+
−	* [http://www.constructionnews.co.in/technical-terms-for-reinforced-concrete-structure.html VITAL TECHNICAL TERMS USED IN REINFORCED CONCRETE STRUCTURES]	+
−	* [http://www.constructionnews.co.in/why-concrete-needs-reinforcement.html HOW CONCRETE BECOMES STRONGER WITH ADDITION OF REBAR]	+
−	* [http://www.constructionnews.co.in/placing-of-reinforcement-bars.html ARRANGEMENT OF REINFORCEMENT IN DIFFERENT STRUCTURAL MEMBERS]	+

−	=== Do's for detailing ===	+	= Do's for detailing =

	* Create perfect drawings and if possible label each bar and demonstrate its shape for transparency.		* Create perfect drawings and if possible label each bar and demonstrate its shape for transparency.
−	* Cross section of retaining wall that collapses instantly as soon as the soil backfill is provided since 1/4 inches dia is used in spite of 1-1/4 inches dia. Problems arise since perfect rebar is covered by a dimension line.
	* Create a bar bending schedule when required.		* Create a bar bending schedule when required.
	* Specify perfect clear cover, nominal cover or effective cover to reinforcement.		* Specify perfect clear cover, nominal cover or effective cover to reinforcement.
−	* Determine detailed ~~location~~ of ~~opening~~ or ~~hole~~ and provide sufficient details for reinforcements around the openings.	+	* Determine detailed locations of openings or holes and provide sufficient details for reinforcements around the openings.
−	* Utilise the size of bars and spirals. The numbers various sizes of bars should be retained minimum for a single structural member.	+	* The grade of steel should be mentioned in the drawing.
−	* The grade of steel should be ~~evidently~~ mentioned in the drawing.	+
	* Deformed bars should not contain hooks at their ends.		* Deformed bars should not contain hooks at their ends.
−	* ~~Demonstrate~~ enlarged details at corners, junctions of walls, beams and column ~~joint and at same situations~~.	+	* Show enlarged details at corners, junctions of walls, beams and column joints.
−	* Congestion of bars should not ~~be provided~~ at points where members overlap ~~and ensure that all reinforcement are arranged perfectly~~.	+	* Congestion of bars should not occur at points where members overlap.
	* For bundled bars, lapped splice of bundled bars should be created by splicing one bar at a time; such separate splices inside the bundle should be staggered.		* For bundled bars, lapped splice of bundled bars should be created by splicing one bar at a time; such separate splices inside the bundle should be staggered.
	* Ensure that hooked and bent up bars are arranged and contain sufficient concrete protection.		* Ensure that hooked and bent up bars are arranged and contain sufficient concrete protection.
Line 38:		Line 27:
	* The position of construction joints should remain at the point of minimum shear approximately at mid or adjacent to the mid points. It should be developed vertically and not in a sloped manner.		* The position of construction joints should remain at the point of minimum shear approximately at mid or adjacent to the mid points. It should be developed vertically and not in a sloped manner.

−	=== Do's for Beam and Slab Reinforcement Detailing ===	+	= Do's for Beam and Slab Reinforcement Detailing =

	* When splices are arranged in bars, they should remain out of the sections of maximum stresses as far as possible and should be staggered.		* When splices are arranged in bars, they should remain out of the sections of maximum stresses as far as possible and should be staggered.
Line 46:		Line 35:
	* To adapt bottom bars, secondary beams should be created shallower than primary beams, at least by 50 mm.		* To adapt bottom bars, secondary beams should be created shallower than primary beams, at least by 50 mm.

−	=== Do's for column reinforcement detailing ===	+	= Do's for column reinforcement detailing =

	* A reinforced column should contain minimum six bars of longitudinal reinforcement to be used in transverse helical reinforcement for circular sections.		* A reinforced column should contain minimum six bars of longitudinal reinforcement to be used in transverse helical reinforcement for circular sections.
Line 53:		Line 42:
	* 2 grades of vertical bars should not be used in similar component.		* 2 grades of vertical bars should not be used in similar component.

−	=== Do Not's General ===	+	= Do Not's General =

	* Reinforcement should not expand over an expansion joint and the break among the sections should be finished.		* Reinforcement should not expand over an expansion joint and the break among the sections should be finished.
Line 62:		Line 51:
	* When bent up bars are used, their participation towards shear resistance should not surpass 50% of the total shear to be countered. Single bent up bars alias cranked should not used in case of earthquake resistance structures.		* When bent up bars are used, their participation towards shear resistance should not surpass 50% of the total shear to be countered. Single bent up bars alias cranked should not used in case of earthquake resistance structures.

−	[[Category:Publications_/_reports]]	+	= External references: =
		+
		+	* [http://www.constructionnews.co.in/technical-terms-for-reinforced-concrete-structure.html VITAL TECHNICAL TERMS USED IN REINFORCED CONCRETE STRUCTURES]
		+	* [http://www.constructionnews.co.in/why-concrete-needs-reinforcement.html HOW CONCRETE BECOMES STRONGER WITH ADDITION OF REBAR]
		+	* [http://www.constructionnews.co.in/placing-of-reinforcement-bars.html ARRANGEMENT OF REINFORCEMENT IN DIFFERENT STRUCTURAL MEMBERS]
		+
		+	[[Category:Publications_/_reports]] [[Category:Design]]

Rajib1971: Created page with "= REINFORCEMENT DETAILING GUIDE = [http://www.constructionnews.co.in/images/RC-Detailing.jpg http://www.constructionnews.co.in/images/RC-Detailing.jpg] Reinforcement Detailing ..."

2019-08-11T06:14:26Z

Created page with "= REINFORCEMENT DETAILING GUIDE = [http://www.constructionnews.co.in/images/RC-Detailing.jpg http://www.constructionnews.co.in/images/RC-Detailing.jpg] Reinforcement Detailing ..."

New page

= REINFORCEMENT DETAILING GUIDE =

[http://www.constructionnews.co.in/images/RC-Detailing.jpg http://www.constructionnews.co.in/images/RC-Detailing.jpg]

Reinforcement Detailing plays an important role in construction as perfect detailing of engineering design in planning and engineering process can resist the collapsing of the building resulting from defective connection or detailing. Detailing also maintains the safety of the structure.

Reinforcement Detailing is important for the steel structures as well as RCC members since it translates all the mathematical expressions and equations results.

=== Detailing can be done the for following RCC members :- ===

* Slabs with or without openings (rectangular, circular, non-rectangular pyramid slab, triangular slab etc.)
* Beams with or without openings (shallow and deep beams)
* Columns with different shapes like rectangular, L, T, circular, octagonal, cross etc.
* Detailing of foundations
* Detailing for gravity loads differ from the lateral loads particularly for the seismic forces.
* There is also other type of detailing necessary for the rehabilitation and strengthening of damaged structures.<br />
<br />
ALSO READ :
* [http://www.constructionnews.co.in/technical-terms-for-reinforced-concrete-structure.html VITAL TECHNICAL TERMS USED IN REINFORCED CONCRETE STRUCTURES]
* [http://www.constructionnews.co.in/why-concrete-needs-reinforcement.html HOW CONCRETE BECOMES STRONGER WITH ADDITION OF REBAR]
* [http://www.constructionnews.co.in/placing-of-reinforcement-bars.html ARRANGEMENT OF REINFORCEMENT IN DIFFERENT STRUCTURAL MEMBERS]

=== Do's for detailing ===

* Create perfect drawings and if possible label each bar and demonstrate its shape for transparency.
* Cross section of retaining wall that collapses instantly as soon as the soil backfill is provided since 1/4 inches dia is used in spite of 1-1/4 inches dia. Problems arise since perfect rebar is covered by a dimension line.
* Create a bar bending schedule when required.
* Specify perfect clear cover, nominal cover or effective cover to reinforcement.
* Determine detailed location of opening or hole and provide sufficient details for reinforcements around the openings.
* Utilise the size of bars and spirals. The numbers various sizes of bars should be retained minimum for a single structural member.
* The grade of steel should be evidently mentioned in the drawing.
* Deformed bars should not contain hooks at their ends.
* Demonstrate enlarged details at corners, junctions of walls, beams and column joint and at same situations.
* Congestion of bars should not be provided at points where members overlap and ensure that all reinforcement are arranged perfectly.
* For bundled bars, lapped splice of bundled bars should be created by splicing one bar at a time; such separate splices inside the bundle should be staggered.
* Ensure that hooked and bent up bars are arranged and contain sufficient concrete protection.
* Specify all extension, construction and contraction joints on plan and provide details for such joints.
* The position of construction joints should remain at the point of minimum shear approximately at mid or adjacent to the mid points. It should be developed vertically and not in a sloped manner.

=== Do's for Beam and Slab Reinforcement Detailing ===

* When splices are arranged in bars, they should remain out of the sections of maximum stresses as far as possible and should be staggered.
* When the depth of beams surpass 750 mm in case of beams devoid of torsion and 450 mm with torsion provide face reinforcement according to IS456-2000.
* Deflection in slabs/beams is minimized with the compression reinforcement.
* Only closed stirrups are recommended for transverse reinforcement. For members susceptible to torsion and for members susceptible to reversal of stresses similar to seismic forces.
* To adapt bottom bars, secondary beams should be created shallower than primary beams, at least by 50 mm.

=== Do's for column reinforcement detailing ===

* A reinforced column should contain minimum six bars of longitudinal reinforcement to be used in transverse helical reinforcement for circular sections.
* At least four bars one at each corners of the should be provided in case of rectangular sections.
* Retain exterior dimensions of column fixed so far as possible to use the forms again.
* 2 grades of vertical bars should not be used in similar component.

=== Do Not's General ===

* Reinforcement should not expand over an expansion joint and the break among the sections should be finished.
* Flexural reinforcement should not preferably be discontinued in a tension zone.
* Bars greater than 36 mm dia should not be bundled.
* Lap splices should not be utilised for bars greater than 36 mm dia. Except where welded.
* When dowels are used, their diameter should not go beyond the diameter of the column bars in excess of 3 mm.
* When bent up bars are used, their participation towards shear resistance should not surpass 50% of the total shear to be countered. Single bent up bars alias cranked should not used in case of earthquake resistance structures.

[[Category:Publications_/_reports]]