Category:733 Precast Concrete Box Culverts - Revision history

Smithk at 13:33, 14 September 2021

2021-09-14T13:33:48Z

← Older revision		Revision as of 08:33, 14 September 2021
Line 1:		Line 1:
	==733.2 Construction Inspection for Sec 733==		==733.1 Construction Inspection for Sec 733==
	[[image:733.jpg\|right\|425px]]		[[image:733.jpg\|right\|425px]]
	===Subgrade Preparation and Bedding (For [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=11 Sec 733.3.1])===		===Subgrade Preparation and Bedding (For [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=11 Sec 733.3.1])===

Smithk: Per CM, removed archaic SiteManager info and replaced with AASHTOWARE info

2021-09-14T13:33:23Z

Per CM, removed archaic SiteManager info and replaced with AASHTOWARE info

← Older revision		Revision as of 08:33, 14 September 2021
Line 13:		Line 13:

	Payment for stabilizing foundations should be authorized only after the contractor has provided		Payment for stabilizing foundations should be authorized only after the contractor has provided
	adequate drainage to establish that material is unsuitable. Undergrading must be authorized by ~~[[media:Estimate Based Documentation Records.doc\|~~documentation record~~]][[image:bulldozer.jpg\|20px]]~~. If the contingent item of granular backfill is involved an approved change order is required before payment can be made.		adequate drainage to establish that material is unsuitable. Undergrading must be authorized by documentation record. If the contingent item of granular backfill is involved an approved change order is required before payment can be made.

	==733.2 Material Inspection and Laboratory Testing for Sec 733==		==733.2 Material Inspection and Laboratory Testing for Sec 733==
	See [[:Category:1049 Precast Concrete Box Culverts\|Precast Concrete Box Culverts]].		See [[:Category:1049 Precast Concrete Box Culverts\|Precast Concrete Box Culverts]].

Smithk: updated links

2016-06-14T12:30:36Z

updated links

← Older revision		Revision as of 07:30, 14 June 2016
Line 1:		Line 1:
	==733.2 Construction Inspection for Sec 733==		==733.2 Construction Inspection for Sec 733==
	[[image:733.jpg\|right\|425px]]		[[image:733.jpg\|right\|425px]]
	===Subgrade Preparation and Bedding (For [http://modot.~~mo.gov~~/business/standards_and_specs/~~Sec0733~~.pdf Sec 733.3.1])===		===Subgrade Preparation and Bedding (For [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=11 Sec 733.3.1])===
	The bottom slab of concrete box-type structures should be placed on reasonably dry foundation material of sufficient uniformity to prevent differential settlement of the structure. The foundation need be only sufficiently stable that the material does not become mixed with concrete as the bottom slab is being placed.		The bottom slab of concrete box-type structures should be placed on reasonably dry foundation material of sufficient uniformity to prevent differential settlement of the structure. The foundation need be only sufficiently stable that the material does not become mixed with concrete as the bottom slab is being placed.

Line 10:		Line 10:
	Sometimes the contractor elects to undergrade a few inches and backfill with granular material to provide an easily maintained base on which to construct the culvert. This is a satisfactory procedure. Payment should not be authorized for removal or replacement of material in this situation, or when the foundation is unsuitable due to improper methods of construction.		Sometimes the contractor elects to undergrade a few inches and backfill with granular material to provide an easily maintained base on which to construct the culvert. This is a satisfactory procedure. Payment should not be authorized for removal or replacement of material in this situation, or when the foundation is unsuitable due to improper methods of construction.

	Some material may have a high organic content or may be a soil which will not permit satisfactory construction of the bottom slab even when properly drained. When this situation exists authorization may be given to remove and replace material, with payment to be made in accordance with [http://modot.~~mo.gov~~/business/standards_and_specs/~~Sec0206~~.pdf Sec 206.6.3].		Some material may have a high organic content or may be a soil which will not permit satisfactory construction of the bottom slab even when properly drained. When this situation exists authorization may be given to remove and replace material, with payment to be made in accordance with [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=5 Sec 206.6.3].

	Payment for stabilizing foundations should be authorized only after the contractor has provided		Payment for stabilizing foundations should be authorized only after the contractor has provided

Smithk: Form C-258 (which is no longer routinely used) replaced with new QRG, Estimate Based Documentation Records, per CM

2011-05-12T13:15:04Z

Form C-258 (which is no longer routinely used) replaced with new QRG, Estimate Based Documentation Records, per CM

← Older revision		Revision as of 08:15, 12 May 2011
Line 1:		Line 1:
	==733.1 Construction Inspection for Sec 733==		==733.2 Construction Inspection for Sec 733==
	[[image:733.jpg\|right\|425px]]		[[image:733.jpg\|right\|425px]]
	===~~733.1.2~~ Subgrade Preparation and Bedding===		===Subgrade Preparation and Bedding (For [http://modot.mo.gov/business/standards_and_specs/Sec0733.pdf Sec 733.3.1])===
	The bottom slab of concrete box-type structures should be placed on reasonably dry foundation material of sufficient uniformity to prevent differential settlement of the structure. The foundation need be only sufficiently stable that the material does not become mixed with concrete as the bottom slab is being placed.		The bottom slab of concrete box-type structures should be placed on reasonably dry foundation material of sufficient uniformity to prevent differential settlement of the structure. The foundation need be only sufficiently stable that the material does not become mixed with concrete as the bottom slab is being placed.

Line 13:		Line 13:

	Payment for stabilizing foundations should be authorized only after the contractor has provided		Payment for stabilizing foundations should be authorized only after the contractor has provided
	adequate drainage to establish that material is unsuitable. Undergrading must be authorized by documentation record. If the contingent item of granular backfill is involved an approved change order is required before payment can be made.		adequate drainage to establish that material is unsuitable. Undergrading must be authorized by [[media:Estimate Based Documentation Records.doc\|documentation record]][[image:bulldozer.jpg\|20px]]. If the contingent item of granular backfill is involved an approved change order is required before payment can be made.

	==733.2 Material Inspection and Laboratory Testing for Sec 733==		==733.2 Material Inspection and Laboratory Testing for Sec 733==
	See [[:Category:1049 Precast Concrete Box Culverts\|Precast Concrete Box Culverts]].		See [[:Category:1049 Precast Concrete Box Culverts\|Precast Concrete Box Culverts]].

Smithk: article construction

2007-09-18T12:59:24Z

article construction

← Older revision		Revision as of 07:59, 18 September 2007
Line 1:		Line 1:
	==733.1 Construction Inspection for Sec 733==		==733.1 Construction Inspection for Sec 733==
			[[image:733.jpg\|right\|425px]]
	===733.1.2 Subgrade Preparation and Bedding===		===733.1.2 Subgrade Preparation and Bedding===
	The bottom slab of concrete box-type structures should be placed on reasonably dry foundation material of sufficient uniformity to prevent differential settlement of the structure. The foundation need be only sufficiently stable that the material does not become mixed with concrete as the bottom slab is being placed.		The bottom slab of concrete box-type structures should be placed on reasonably dry foundation material of sufficient uniformity to prevent differential settlement of the structure. The foundation need be only sufficiently stable that the material does not become mixed with concrete as the bottom slab is being placed.

EPG-Admin at 19:45, 5 September 2007

2007-09-05T19:45:55Z

← Older revision		Revision as of 14:45, 5 September 2007
Line 9:		Line 9:
	Sometimes the contractor elects to undergrade a few inches and backfill with granular material to provide an easily maintained base on which to construct the culvert. This is a satisfactory procedure. Payment should not be authorized for removal or replacement of material in this situation, or when the foundation is unsuitable due to improper methods of construction.		Sometimes the contractor elects to undergrade a few inches and backfill with granular material to provide an easily maintained base on which to construct the culvert. This is a satisfactory procedure. Payment should not be authorized for removal or replacement of material in this situation, or when the foundation is unsuitable due to improper methods of construction.

	Some material may have a high organic content or may be a soil which will not permit satisfactory construction of the bottom slab even when properly drained. When this situation exists authorization may be given to remove and replace material, with payment to be made in accordance with http://modot.mo.gov/business/standards_and_specs/Sec0206.pdf Sec 206.6.3 ~~of the Standard Specifications~~.		Some material may have a high organic content or may be a soil which will not permit satisfactory construction of the bottom slab even when properly drained. When this situation exists authorization may be given to remove and replace material, with payment to be made in accordance with [http://modot.mo.gov/business/standards_and_specs/Sec0206.pdf Sec 206.6.3].

	Payment for stabilizing foundations should be authorized only after the contractor has provided		Payment for stabilizing foundations should be authorized only after the contractor has provided

EPG-Admin at 19:45, 5 September 2007

2007-09-05T19:45:29Z

New page

==733.1 Construction Inspection for Sec 733==
===733.1.2 Subgrade Preparation and Bedding===
The bottom slab of concrete box-type structures should be placed on reasonably dry foundation material of sufficient uniformity to prevent differential settlement of the structure. The foundation need be only sufficiently stable that the material does not become mixed with concrete as the bottom slab is being placed.

It is the contractor's responsibility to provide a satisfactory foundation except when foundation material at grade is inherently unsound. Inherently unsound material is material hich, even if properly drained, would prevent satisfactory installation of reinforcing steel and placement of concrete.

If the foundation consists of material which can be stabilized by draining, it is the contractor's responsibility to provide drainage. In some cases involving sandy material and high groundwater table, contractors have elected to install well point drainage systems. This is one way of providing a suitable foundation, but it is at the contractor's option.

Sometimes the contractor elects to undergrade a few inches and backfill with granular material to provide an easily maintained base on which to construct the culvert. This is a satisfactory procedure. Payment should not be authorized for removal or replacement of material in this situation, or when the foundation is unsuitable due to improper methods of construction.

Some material may have a high organic content or may be a soil which will not permit satisfactory construction of the bottom slab even when properly drained. When this situation exists authorization may be given to remove and replace material, with payment to be made in accordance with http://modot.mo.gov/business/standards_and_specs/Sec0206.pdf Sec 206.6.3 of the Standard Specifications.

Payment for stabilizing foundations should be authorized only after the contractor has provided
adequate drainage to establish that material is unsuitable. Undergrading must be authorized by documentation record. If the contingent item of granular backfill is involved an approved change order is required before payment can be made.

==733.2 Material Inspection and Laboratory Testing for Sec 733==
See [[:Category:1049 Precast Concrete Box Culverts|Precast Concrete Box Culverts]].