Lee's Summit

As shown, there is not enough plan detail for the sidewalk to layout or inspect its construction without using a scale on paper or electronic files. For example, the sidewalk has multiple curves in its alignment, but no reference to the radius of any curve. Nor is there any reference on the plan or typical section to a common offset or dimensioned distance behind the curb.

A typical section view was provided for the pavement design, but is illegible in terms of field use. Please provide a typical section view which is legible for field use. Please be cognizant that the plans will be used in the field, both by the contractor and the City inspector.

It appears the illegible typical section discussed above shows geogrid and/or subgrade stabilization. As discussed in previous comment letters, the new street widening section should match what is existing. Our records indicate the existing pavement section is a 2 inch surface course over a 10 inch base course, on top of a 12 inch compacted subgrade (95% proctor). We show no existing subgrade stabilization or geogrid. Type 5 or 6 asphaltic concrete may be used for either the surface course or the base course. Please show a typical section view on the plans which is large enough to read in the field, and shows exactly what is being proposed. Although not specifically prohibited, subgrade stabilization or geogrid is not necessarily required.

The typical section view should also show the typical slope to the nearest tenth. Using nomenclature such as a "quarter inch per foot" is discouraged for the roadway section, especially since this equates to 2.1% slope rather than a design slope of 2.0%.

This project's main focus is a turn lane, and the associated paving design associated with it. We feel the typical section view should reflect a widened arterial street section, rather than a full-width arterial street section. In other words, please provide a typical section view of the pavement design for this project, showing the widened street section, along with "greyed-out" existing pavement. This will provide a much better method to convey what is being proposed. As shown, it appears to show a full width arterial street section. The label for this section view should be renamed as "Widened Arterial Street Section View", or equivalent language.

Provide dimensions or station/offset for the removal plan to note the beginning/end limits of the removals.

Provide the dimensions or station/offset for the sidewalk construction on the turn lane plan.

Add dimension or reference to the start of the solid white line and offset from curb (e.g. show the lane width and reference the PC of Curb Return).

Provide dimensions or station/offset for the removal plan to note the beginning/end limits of the removals.

Provide the dimensions or station/offset for the sidewalk construction on the turn lane plan.

Add dimension or reference to the start of the solid white line and offset from curb (e.g. show the lane width and reference the PC of Curb Return).

A typical section view was provided for the pavement design, but is illegible in terms of field use. Please provide a typical section view which is legible for field use. Please be cognizant that the plans will be used in the field, both by the contractor and the City inspector.

It appears the illegible typical section discussed above shows geogrid and/or subgrade stabilization. As discussed in previous comment letters, the new street widening section should match what is existing. Our records indicate the existing pavement section is a 2 inch surface course over a 10 inch base course, on top of a 12 inch compacted subgrade (95% proctor). We show no existing subgrade stabilization or geogrid. Type 5 or 6 asphaltic concrete may be used for either the surface course or the base course. Please show a typical section view on the plans which is large enough to read in the field, and shows exactly what is being proposed. Although not specifically prohibited, subgrade stabilization or geogrid is not necessarily required.

The typical section view should also show the typical slope to the nearest tenth. Using nomenclature such as a "quarter inch per foot" is discouraged for the roadway section, especially since this equates to 2.1% slope rather than a design slope of 2.0%.

This project's main focus is a turn lane, and the associated paving design associated with it. We feel the typical section view should reflect a widened arterial street section, rather than a full-width arterial street section. In other words, please provide a typical section view of the pavement design for this project, showing the widened street section, along with "greyed-out" existing pavement. This will provide a much better method to convey what is being proposed. As shown, it appears to show a full width arterial street section. The label for this section view should be renamed as "Widened Arterial Street Section View", or equivalent language.

Please refer to comment #4 of the previous applicant letter. Although concrete is called-out for the commercial entrance, KCMMB concrete should be specifically noted.

Please refer to comment #6 of the previous applicant letter. It does not appear the plans show a typical section view for the asphaltic concrete pavement for the road widening. In accordance with City of Lee's Summit standards for arterial street widening, the design should follow the existing design in terms of thickness and subgrade preparation. Our records show the existing pavement section is a 2 inch surface course over a 10 inch base course, on top of a 12 inch compacted subgrade. Type 5 or 6 asphaltic concrete may be used for either the surface course or the base course. Please show a typical section view on the plans in a conspicuous location (i.e., not a note).

Include a plan note on the pavement marking sheet that all right-turn arrow symbols shall be preformed thermoplastic and 4" solid white line shall be high build paint.

Add dimension or reference to the start of the solid white line and offset from curb (e.g. show the lane width and reference the PC of Curb Return). Also show the dimension for one of the arrows from the end of the white line for reference.

Provide dimensions or station/offset for the removal plan to note the beginning/end limits of the removals.

Provide the dimensions or station/offset for the sidewalk construction on the turn lane plan.

The plans appear to be incomplete. As such, a cursury review is being provided.

Sheet C3.0 is missing a site-specific plan for construction of ADA-accessible ramps in accordance with the bullet point items contained in Section 5304.8, and incorporating the design criteria shown on Table LS-5.

Generic City standard details are provided in the details section of the plans, but these should be removed from the plan set since a site-specific plan is required. They may be used as a guide in preparation of the site-specific plan, but are not intended to be placed in construction plans. Please refer to Section 5304.8, and Table LS-5 for specific details needed in the plans.

KCMMB concrete (8 inch thick) is required for the new driveway entrance from the right of way line, to the end of the driveway on the street side. Please show this on the plans.

Table LS-2 is provided on Sheet C8.0, but this table has no pertinence to the project since this is an arterial road. Please remove.

The widened pavement section should match the existing pavement design. Our records indicate the existing pavement section is a 2 inch surface course over a 10 inch base course, on top of a 12 inch compacted subgrade (i.e., 95% standard proctor). Type 5 or 6 may be used for either base or surface course.

Please revise the cost estimate as per the above changes.

Incomplete Plans. The plans generally lack construction detail (e.g. alignment information, dimensioning, notes, points of reference/control points, benchmarks, typical section/pavement design, etc.).