Other Aspects of Pavement Design - Revision history

Smithk: Updated CM website links (for increased security)

2021-10-22T14:57:40Z

Updated CM website links (for increased security)

← Older revision		Revision as of 09:57, 22 October 2021
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	\|'''Forms'''		\|'''Forms'''
	\|-		\|-
	\|[~~http~~://epg.modot.~~mo.gov~~/forms/CM/Pavement_Type_Selection_Submittal.pdf Pavement Type Selection Submittal Information]		\|[https://epg.modot.org/forms/CM/Pavement_Type_Selection_Submittal.pdf Pavement Type Selection Submittal Information]
	\|}		\|}
	For spot improvements, such as widening for turning lanes or for short realignments, a pavement thickness design by Construction and Materials is not always required. The Optional Pavement Design chart below should be used to determine whether or not a pavement design is required. If no pavement design is required, optional pavement choices should still be provided unless there is a valid reason for an exception.		For spot improvements, such as widening for turning lanes or for short realignments, a pavement thickness design by Construction and Materials is not always required. The Optional Pavement Design chart below should be used to determine whether or not a pavement design is required. If no pavement design is required, optional pavement choices should still be provided unless there is a valid reason for an exception.
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	===Pavement Thickness Request===		===Pavement Thickness Request===
	[[image:thickness determination concrete.jpg\|right\|250px]]		[[image:thickness determination concrete.jpg\|right\|250px]]
	A completed [~~http~~://epg.modot.~~mo.gov~~/forms/CM/Pavement_Type_Selection_Submittal.pdf Pavement Type Selection Submittal Information] form is submitted to the Pavement Section in the Construction and Materials Division, with a copy to the Design Division, during preliminary design. The pavement thickness determination will include the aggregate base and underdrainage design. The pavement thickness request is to include the following information:		A completed [https://epg.modot.org/forms/CM/Pavement_Type_Selection_Submittal.pdf Pavement Type Selection Submittal Information] form is submitted to the Pavement Section in the Construction and Materials Division, with a copy to the Design Division, during preliminary design. The pavement thickness determination will include the aggregate base and underdrainage design. The pavement thickness request is to include the following information:

	*A description of the existing and proposed design template for the mainline, ramps and any other roadways associated with the project (appurtenances) requiring a pavement structural design		*A description of the existing and proposed design template for the mainline, ramps and any other roadways associated with the project (appurtenances) requiring a pavement structural design

Smithk: /* Shoulder Surface */ Per CM and EPS, further clarified shoulder design and construction processes

2021-02-02T19:17:06Z

Shoulder Surface: Per CM and EPS, further clarified shoulder design and construction processes

← Older revision		Revision as of 14:17, 2 February 2021
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	Shoulders on urban roadways with access control (major or minor) are to be paved. In no case will a paved or aggregate surface be used directly behind a mountable curb along the outer edge of a roadway. A curb and gutter will only be used with a posted speed less than 50 mph.		Shoulders on urban roadways with access control (major or minor) are to be paved. In no case will a paved or aggregate surface be used directly behind a mountable curb along the outer edge of a roadway. A curb and gutter will only be used with a posted speed less than 50 mph.

	Currently shoulder designs are categorized as A1, A2 and A3.		Currently shoulder designs for new roadway construction are categorized as Type A1, A2 and A3. The Type A1, A2 and A3 designations should not be used when adding shoulders to existing pavements, (see [[231.4 Shoulder Width#231.4.3 Shoulder Widening Projects\|EPG 231.4.3 Shoulder Widening Projects]]).

	Type A1 shoulder design is comprised of asphalt or concrete on a prepared aggregate subgrade placed the same thickness as the mainline pavement. This shoulder type is to be used sparingly, in instances that can be justified such as where there is an imminent need for use of the shoulder as a lane.		Type A1 shoulder design is comprised of asphalt or concrete on a prepared aggregate subgrade placed the same thickness as the mainline pavement. This shoulder type is to be used sparingly, in instances that can be justified such as where there is an imminent need for use of the shoulder as a lane.

Smithk: Per CM, moved Alternate and Optional Pavement to EPG 242

2020-12-18T17:32:22Z

Per CM, moved Alternate and Optional Pavement to EPG 242

Show changes

Smithk: Per TS, minor clarifications

2020-11-16T19:06:40Z

Per TS, minor clarifications

Show changes

Smithk: /* Shoulder Surface */

2019-01-25T19:55:37Z

Shoulder Surface

← Older revision		Revision as of 14:55, 25 January 2019
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	For new construction, a paved shoulder is provided on major routes, the full thickness of the travel way pavement should be extended laterally to a longitudinal joint either 1 ft. or 2 ft. outside the travel way. This widening is to extend 2 ft. for interstate and 1 ft. for all other locations. In instances where short segments of pavement are placed, butted at each end by pavement that is not widened, approval may be obtained to omit the widening.		For new construction, a paved shoulder is provided on major routes, the full thickness of the travel way pavement should be extended laterally to a longitudinal joint either 1 ft. or 2 ft. outside the travel way. This widening is to extend 2 ft. for interstate and 1 ft. for all other locations. In instances where short segments of pavement are placed, butted at each end by pavement that is not widened, approval may be obtained to omit the widening.
			<div id="For resurfacing projects on roadways with shoulders 4"></div>
	For resurfacing projects on roadways with shoulders 4 feet or narrower, when shoulder improvements are also anticipated as part of the scope of work, the same asphalt surface mix used on the travelway should be extended the entire shoulder width. This will allow for a single monolithic pavement operation for the shoulder, reducing additional lane drops and construction time. All shoulders wider than 4 feet should have the same asphalt surface mix used on the travelway extended onto the shoulder a minimum of 18 inches. An alternate mix type may be specified beyond 18 inches when the shoulder are wider than 4 feet. This will provide a continuous surface mix for placing rumble strips/stripes. (See [[:Category:626 Rumble Strips\|EPG 626 Rumble Strips]].)		For resurfacing projects on roadways with shoulders 4 feet or narrower, when shoulder improvements are also anticipated as part of the scope of work, the same asphalt surface mix used on the travelway should be extended the entire shoulder width. This will allow for a single monolithic pavement operation for the shoulder, reducing additional lane drops and construction time. All shoulders wider than 4 feet should have the same asphalt surface mix used on the travelway extended onto the shoulder a minimum of 18 inches. An alternate mix type may be specified beyond 18 inches when the shoulder are wider than 4 feet. This will provide a continuous surface mix for placing rumble strips/stripes. (See [[:Category:626 Rumble Strips\|EPG 626 Rumble Strips]].)

Smithk: /* Shoulder Surface */Per EPS, all shoulders 4 ft and narrower, and when shoulder improvements are also anticipated as part of the scope of work, will be monolithically resurfaced with the same type of asphaltic mix used on the mainline roadway.

2019-01-25T19:48:20Z

Shoulder Surface: Per EPS, all shoulders 4 ft and narrower, and when shoulder improvements are also anticipated as part of the scope of work, will be monolithically resurfaced with the same type of asphaltic mix used on the mainline roadway.

← Older revision		Revision as of 14:48, 25 January 2019
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	==Shoulder Surface==		==Shoulder Surface==
	[[image:Shoulder Surface Photo.jpg\|right\|300 px]]		[[image:Shoulder Surface Photo.jpg\|right\|300 px]]
	Paved shoulders and aggregate stabilized shoulders provide a secure surface to ~~accomodate~~ vehicles for emergencies and other uses. Paved shoulders are an integral part of the pavement structure and are considered as part of the pavement design configuration. See [[231.4 Shoulder Width\|Shoulder Width]] for additional information		Paved shoulders and aggregate stabilized shoulders provide a secure surface to accommodate vehicles for emergencies and other uses. Paved shoulders are an integral part of the pavement structure and are considered as part of the pavement design configuration. See [[231.4 Shoulder Width\|Shoulder Width]] for additional information
	{\|style="padding: 0.3em; margin-right:5px; border:2px solid #a9a9a9; text-align:center; font-size: 95%; background:#f5f5f5" width="160px" align="left"		{\|style="padding: 0.3em; margin-right:5px; border:2px solid #a9a9a9; text-align:center; font-size: 95%; background:#f5f5f5" width="160px" align="left"
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	Currently shoulder designs are categorized as A1, A2 and A3.		Currently shoulder designs are categorized as A1, A2 and A3.

	Type A1 shoulder design is comprised of asphalt or concrete on a prepared aggregate subgrade placed the same thickness as the mainline pavement. This shoulder type ~~are~~ to be used sparingly, in instances that can be justified such as where there is an imminent need for use of the shoulder as a lane.		Type A1 shoulder design is comprised of asphalt or concrete on a prepared aggregate subgrade placed the same thickness as the mainline pavement. This shoulder type is to be used sparingly, in instances that can be justified such as where there is an imminent need for use of the shoulder as a lane.

	Type A2 shoulder design consists of asphalt, concrete or roller compacted concrete on a prepared aggregate subgrade with the final surface placed 5 ¾ in. thick. Type A2 shoulders are used on all interstate routes and for major roadways with significant traffic.		Type A2 shoulder design consists of asphalt, concrete or roller compacted concrete on a prepared aggregate subgrade with the final surface placed 5 ¾ in. thick. Type A2 shoulders are used on all interstate routes and for major roadways with significant traffic.

	Type A3 shoulder design consists of asphalt, concrete, or roller compacted concrete on a prepared aggregate subgrade with the final surface placed either 3 ¾ in. thick (asphalt) or 4 in. thick (concrete or roller compacted concrete). This shoulder ~~are~~ used on major routes (non-interstate only) with relatively lower traffic volumes and on minor routes where a paved shoulder will be provided.		Type A3 shoulder design consists of asphalt, concrete, or roller compacted concrete on a prepared aggregate subgrade with the final surface placed either 3 ¾ in. thick (asphalt) or 4 in. thick (concrete or roller compacted concrete). This shoulder type is used on major routes (non-interstate only) with relatively lower traffic volumes and on minor routes where a paved shoulder will be provided.

	~~Where~~ a paved shoulder is provided on major routes, the full thickness of the travel way pavement should be extended laterally to a longitudinal joint either 1 ft. or 2 ft. outside the travel way. This widening is to extend 2 ft. for interstate and 1 ft. for all other locations. In instances where short segments of pavement are placed, butted at each end by pavement that is not widened, approval may be obtained to omit the widening.		For new construction, a paved shoulder is provided on major routes, the full thickness of the travel way pavement should be extended laterally to a longitudinal joint either 1 ft. or 2 ft. outside the travel way. This widening is to extend 2 ft. for interstate and 1 ft. for all other locations. In instances where short segments of pavement are placed, butted at each end by pavement that is not widened, approval may be obtained to omit the widening.

			For resurfacing projects on roadways with shoulders 4 feet or narrower, when shoulder improvements are also anticipated as part of the scope of work, the same asphalt surface mix used on the travelway should be extended the entire shoulder width. This will allow for a single monolithic pavement operation for the shoulder, reducing additional lane drops and construction time. All shoulders wider than 4 feet should have the same asphalt surface mix used on the travelway extended onto the shoulder a minimum of 18 inches. An alternate mix type may be specified beyond 18 inches when the shoulder are wider than 4 feet. This will provide a continuous surface mix for placing rumble strips/stripes. (See [[:Category:626 Rumble Strips\|EPG 626 Rumble Strips]].)

	Ramp shoulders should be consistent with the mainline. For ramps with integral curbs, the shoulder material and thickness will be specified in the pavement thickness determination.		Ramp shoulders should be consistent with the mainline. For ramps with integral curbs, the shoulder material and thickness will be specified in the pavement thickness determination.

Smithk: /* Plans and Estimates for Projects with Alternate Pavements */Per Bidding and Est, updated archaic reference to a program with " Bidtabs.net"

2018-11-29T16:52:48Z

Plans and Estimates for Projects with Alternate Pavements: Per Bidding and Est, updated archaic reference to a program with " Bidtabs.net"

← Older revision		Revision as of 11:52, 29 November 2018
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	:* All pay items for full depth alternate pavements shall be in square yards for the entire pavement.		:* All pay items for full depth alternate pavements shall be in square yards for the entire pavement.
	:* One set of 2B sheets with separate sheets for the items associated with each alternate.		:* One set of 2B sheets with separate sheets for the items associated with each alternate.
	:* Using the "~~Bid Tabs Pro Plus~~" program, the quantities for pavement and other items associated only with the asphalt alternate (designated as "Alternate A") should be designated as "Section 02" and the quantities for pavement and other items associated only with the concrete alternate (designated as "Alternate B") should be designated "Section 03". For A2 shoulders or thicker use "Section 04" for the shoulder type that corresponds with "Section 02" and "Section 05" for the shoulder type that corresponds with "Section 03". This will enable summation of the appropriate subtotals to compile an estimated total cost per alternate. If the project had multiple pavement alternates, the 2nd pavement alternate would be “Section 6” and “Section 7”. For shoulder rumble strips, include the bituminous rumble strip pay item with the asphalt alternate, and the concrete rumble strip pay item with the concrete alternate.		:* Using the "Bidtabs.net" program, the quantities for pavement and other items associated only with the asphalt alternate (designated as "Alternate A") should be designated as "Section 02" and the quantities for pavement and other items associated only with the concrete alternate (designated as "Alternate B") should be designated "Section 03". For A2 shoulders or thicker use "Section 04" for the shoulder type that corresponds with "Section 02" and "Section 05" for the shoulder type that corresponds with "Section 03". This will enable summation of the appropriate subtotals to compile an estimated total cost per alternate. If the project had multiple pavement alternates, the 2nd pavement alternate would be “Section 6” and “Section 7”. For shoulder rumble strips, include the bituminous rumble strip pay item with the asphalt alternate, and the concrete rumble strip pay item with the concrete alternate.
	:* Job Special Provision ALTERNATE FOR PAVEMENTS should be inserted in the Job Special Provisions. The		:* Job Special Provision ALTERNATE FOR PAVEMENTS should be inserted in the Job Special Provisions. The
	Life Cycle Cost adjustment factor is calculated by the Central Office.		Life Cycle Cost adjustment factor is calculated by the Central Office.

Smithk: /* Thickness Determination */

2018-11-19T17:29:45Z

Thickness Determination

← Older revision		Revision as of 12:29, 19 November 2018
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	===Pavement Thickness Request===		===Pavement Thickness Request===
	[[image:thickness determination concrete.jpg\|right\|250px]]		[[image:thickness determination concrete.jpg\|right\|250px]]
	A completed [~~[media~~:~~101 Pavement Type Selection Submittal~~.~~docx\|~~Pavement Type Selection Submittal Information]] form is submitted to the Pavement Section in the Construction and Materials Division, with a copy to the Design Division, during preliminary design. The pavement thickness determination will include the aggregate base and underdrainage design. The pavement thickness request is to include the following information:		A completed [http://epg.modot.mo.gov/forms/CM/Pavement_Type_Selection_Submittal.pdf Pavement Type Selection Submittal Information] form is submitted to the Pavement Section in the Construction and Materials Division, with a copy to the Design Division, during preliminary design. The pavement thickness determination will include the aggregate base and underdrainage design. The pavement thickness request is to include the following information:

	*A description of the existing and proposed design template for the mainline, ramps and any other roadways associated with the project (appurtenances) requiring a pavement structural design		*A description of the existing and proposed design template for the mainline, ramps and any other roadways associated with the project (appurtenances) requiring a pavement structural design

Smithk: /* Thickness Determination */ updated link

2018-11-19T13:48:14Z

Thickness Determination: updated link

← Older revision		Revision as of 08:48, 19 November 2018
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	\|'''Forms'''		\|'''Forms'''
	\|-		\|-
	\|[~~[media~~:~~101 Pavement Type Selection Submittal~~.~~docx\|~~Pavement Type Selection Submittal Information]]		\|[http://epg.modot.mo.gov/forms/CM/Pavement_Type_Selection_Submittal.pdf Pavement Type Selection Submittal Information]
	\|}		\|}

EPGsysop: /* Minor Roads */ Per DE, clarification about pavement thicknesses/types sometimes not included on typical sections. Now is effective for April 2018.

2018-02-02T20:43:10Z

Minor Roads: Per DE, clarification about pavement thicknesses/types sometimes not included on typical sections. Now is effective for April 2018.

← Older revision		Revision as of 15:43, 2 February 2018
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	The first 20 ft. of pavement on-grade adjacent to a bridge abutment is always reserved as a bridge design feature. See [[:Category:503 Bridge Approach Slabs\|EPG 503 Bridge Approach Slab]] for more information. The contractor will be given the option of selecting the material type for the Bridge Approach Slab (Minor) which shall be either an optional concrete bridge approach slab (Min. 12” reinforced PCC) or an optional asphalt (Min. 12” HMA) thickened slab consisting of either bituminous pavement (BP) or Superpave (SP) mix, as determined appropriate for the roadway truck volume.		The first 20 ft. of pavement on-grade adjacent to a bridge abutment is always reserved as a bridge design feature. See [[:Category:503 Bridge Approach Slabs\|EPG 503 Bridge Approach Slab]] for more information. The contractor will be given the option of selecting the material type for the Bridge Approach Slab (Minor) which shall be either an optional concrete bridge approach slab (Min. 12” reinforced PCC) or an optional asphalt (Min. 12” HMA) thickened slab consisting of either bituminous pavement (BP) or Superpave (SP) mix, as determined appropriate for the roadway truck volume.

			Optional pavement details (pavement type and all lift thicknesses) should be included on the typical section plan sheets.

	During early scoping, pavement thicknesses for conceptual design and estimating purposes may be obtained from the [[#Pavement Design for Scoping\|ME (Mechanistic-Empirical) Design Table for Project Scoping]].		During early scoping, pavement thicknesses for conceptual design and estimating purposes may be obtained from the [[#Pavement Design for Scoping\|ME (Mechanistic-Empirical) Design Table for Project Scoping]].