751.18 Concrete Multicell Box Girder Bridges - Revision history

Smithk: Per BR, article renamed and renumbered

2021-04-02T13:38:34Z

Per BR, article renamed and renumbered

← Older revision		Revision as of 08:38, 2 April 2021
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	==751.21.1 Reinforcement==		==751.18.1 Reinforcement==
	===751.21.1.1 Single Column Design===		===751.18.1.1 Single Column Design===

	'''Top Slab Modifications at Intermediate Bent:'''		'''Top Slab Modifications at Intermediate Bent:'''
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	<center>'''SECTION AT INT. BENT'''<br/>'''(SINGLE COLUMN)'''</center>		<center>'''SECTION AT INT. BENT'''<br/>'''(SINGLE COLUMN)'''</center>

	===751.21.1.2 Web Reinforcement===		===751.18.1.2 Web Reinforcement===

	'''Top Slab Modifications at Intermediate Bent:'''		'''Top Slab Modifications at Intermediate Bent:'''
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	<center>'''TYPICAL SECTION THRU WEB & SLABS'''</center>		<center>'''TYPICAL SECTION THRU WEB & SLABS'''</center>

	==751.21.2 Miscellaneous Details==		==751.18.2 Miscellaneous Details==
	===751.21.2.1 Access Doors===		===751.18.2.1 Access Doors===

	ACCESS DOORS (RECTANGLE)		ACCESS DOORS (RECTANGLE)

Smithk: Smithk moved page 751.21 Concrete Box Girder to 751.18 Concrete Multicell Box Girder Bridges: Per BR, renamed and renumbered

2021-04-02T13:37:29Z

Smithk moved page 751.21 Concrete Box Girder to 751.18 Concrete Multicell Box Girder Bridges: Per BR, renamed and renumbered

← Older revision	Revision as of 08:37, 2 April 2021
(No difference)

Smithk: attached article to new EPG 751

2010-04-15T15:07:32Z

attached article to new EPG 751

← Older revision		Revision as of 10:07, 15 April 2010
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	[[Category:751 LRFD ~~Manual General~~]]		[[Category:751 LRFD Bridge Design Guidelines]]

EPG-Admin at 18:22, 28 September 2007

2007-09-28T18:22:05Z

New page

==751.21.1 Reinforcement==
===751.21.1.1 Single Column Design===

'''Top Slab Modifications at Intermediate Bent:'''

The reinforcement shown below shall be used in place of the design slab steel.

(1) designed slab steel

<center>[[Image:751.21 cont conc box girders section at int bent single column.gif]]</center>

<center>'''SECTION AT INT. BENT'''<br/>'''(SINGLE COLUMN)'''</center>

===751.21.1.2 Web Reinforcement===

'''Top Slab Modifications at Intermediate Bent:'''

<center>[[Image:751.21 cont conc box girders typical section thru web & slabs.gif]]</center>

<center>'''TYPICAL SECTION THRU WEB & SLABS'''</center>

==751.21.2 Miscellaneous Details==
===751.21.2.1 Access Doors===

ACCESS DOORS (RECTANGLE)

<center>[[Image:751.21 cont conc box girders rectangle access door plan.gif]]</center>

<center>'''PLAN'''</center>

<center>[[Image:751.21 cont conc box girders rectangle access door sec aa.gif]]</center>

<center>'''SECTION A-A'''</center>

<center>'''DETAILS OF ACCESS DOORS'''<br/>'''WEIGHT 179#'''</center>

ACCESS DOORS (OVAL)

<center>[[Image:751.21 cont conc box girders oval access door plan.gif]]</center>

<center>'''PLAN'''</center>

<center>[[Image:751.21 cont conc box girders oval access door sec aa.gif]]</center>

<center>'''SECTION A-A'''</center>

<center>'''DETAILS OF ACCESS DOORS'''</center>

<center>[[Image:751.21 cont conc box girders oval access door details.gif]]</center>

See Section 4A for painting or galvanizing note.

ACCESS DOORS LOCATION

<center>[[Image:751.21 cont conc box girders access door location.gif]]</center>

* Generally, access doors shall be positioned on or near 1/4 point of span and centerline of roadway.

It is permissible to shift position of access doors when:
# Girder is located at centerline of bridge
# To prevent cutting additional slab bars
# To clear construction joints
# To maintain adequate vertical clearance

If possible, do not locate access doors over a roadway or berm.

<center>[[Image:751.21 cont conc box girders access door reinforcement.gif]]</center>

{|border="0" cellpadding="5" align="center"
|colspan="1" align="left" width="400"|'''PLAN OF ACCESS DOOR'''<br/>'''SHOWING REINFORCEMENT'''
|}

[[Category:751 LRFD Manual General]]