Roundabout Construction‐Priest Drive and Grove Parkway Project No. 5408831 Questions and Answers Question #1 ‐ Construction Note 15 on plan sheet 5 of 31 references Type B bus shelter per COT Det T‐654, sheets 13‐21. The attached (from Tempe Website) doesn’t designate a “Type B” shelter and the sheets are numbered 1 through 12. Can you confirm these are the correct drawings for the bus shelter? Answer #1.1‐ The attached drawings reference the 2015 Standard Details. The bus stop passenger shelter Type B standard details (sheets 13‐21) should be used, see attached Question #1.2 ‐ Please confirm if solar power is required. Answer #1.2 ‐ A shelter solar lighting system is required. Solar powered lights are included as a part of Detail T‐654, sheet 13 of 21 (2015 standard details). See attached. Question #1.3 ‐ Sheet 3 of 12 shows a bench and trash receptacle to be confirmed by COT Answer #1.3 ‐ Transit will furnish and install the bus stop seating, trash receptacle, bike hoop, and schedule holder. 2015.12.1 - C.O.T. Bus Stop Standard De Question #2 ‐ Will there be SRP Drawing so as to coincide with line item #88 for on bid schedule? Answer #2 – It will be the responsibility of the Contractor to coordinate with SRP for the street light relocations. Separate plans are not provided Question #3 ‐ Re: MAG Spec 301, Drawing Sheets 5‐7 ‐ Project Specifications state that Subgrade Preparation (Bid Item No. 6) includes "preparation of natural or excavated areas prior to the placement of sub‐base material, pavement, curbs and gutters, driveways, sidewalks or other structures." Owner‐provided quantities appear to only include roadway (AC) areas. Please confirm the quantity should be increased to include curbs and gutters, driveways, sidewalks, and bus stop pad. Answer #3 ‐ Per MAG 301.7, the measurement of subgrade preparation quantity includes area under AC pavement and PCCP pavement. It does not include area underneath sidewalk (inclusive of the bus stop pads), concrete driveways/alleyways, or curbs/gutters.
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Roundabout Construction‐Priest Drive and Grove Parkway Project No. 5408831
Questions and Answers Question #1 ‐ Construction Note 15 on plan sheet 5 of 31 references Type B bus shelter per COT
Det T‐654, sheets 13‐21. The attached (from Tempe Website) doesn’t designate a “Type B”
shelter and the sheets are numbered 1 through 12. Can you confirm these are the correct
drawings for the bus shelter?
Answer #1.1‐ The attached drawings reference the 2015 Standard Details. The bus stop
passenger shelter Type B standard details (sheets 13‐21) should be used, see attached
Question #1.2 ‐ Please confirm if solar power is required.
Answer #1.2 ‐ A shelter solar lighting system is required. Solar powered lights are included as a
part of Detail T‐654, sheet 13 of 21 (2015 standard details). See attached.
Question #1.3 ‐ Sheet 3 of 12 shows a bench and trash receptacle to be confirmed by COT
Answer #1.3 ‐ Transit will furnish and install the bus stop seating, trash receptacle, bike hoop,
and schedule holder.
2015.12.1 - C.O.T. Bus Stop Standard De
Question #2 ‐ Will there be SRP Drawing so as to coincide with line item #88 for on bid schedule? Answer #2 – It will be the responsibility of the Contractor to coordinate with SRP for the street light relocations. Separate plans are not provided Question #3 ‐ Re: MAG Spec 301, Drawing Sheets 5‐7 ‐ Project Specifications state that
Subgrade Preparation (Bid Item No. 6) includes "preparation of natural or excavated areas prior
to the placement of sub‐base material, pavement, curbs and gutters, driveways, sidewalks or
other structures." Owner‐provided quantities appear to only include roadway (AC) areas.
Please confirm the quantity should be increased to include curbs and gutters, driveways,
sidewalks, and bus stop pad.
Answer #3 ‐ Per MAG 301.7, the measurement of subgrade preparation quantity includes area under AC pavement and PCCP pavement. It does not include area underneath sidewalk (inclusive of the bus stop pads), concrete driveways/alleyways, or curbs/gutters.
Question #3.1 ‐ Re: MAG Spec 424, Drawing Sheet 6, Technical Specification "Bid Items" ‐ Item No. 7 ‐ Aesthetic Grading, states the work included in this bid item relates specifically to the grading within the roundabout central circle. The work is to conform to MAG Spec 424 and City of Tempe supplement. MAG Spec 424 states the specification includes "all work necessary to bring the surface of the parkway, between the back of curbs and sidewalks and/or the parkway between sidewalks and the right‐of‐way line to the grade and cross‐section shown on the plans, or as directed by the Engineer." Please confirm if Bid Item No. 7 payment will include only the roundabout central circle, or if other parkway grading is to be measured and paid under this item. Also please provide corresponding cross‐sections or grades for the central circle work. Answer #3.1 ‐ The intent of the Aesthetic Grading item is to provide payment for the decorative grading within the roundabout circle, and the quantity reflects this work. Grading between the back of curb and sidewalk is considered incidental. Grades and contours for the roundabout aesthetic grading are provided on Sheet 20 of 31.
Question #3.2 ‐ Re: Drawing Sheet 12 ‐ Bid Item No. 42 is titled '18" RGRCP'. Drawing Sheet 12 of the Contract Drawings calls for 18" RCP. Please confirm the material to be utilized for the 18" storm drain install ‐ Class V and rubber gasketed. Answer #3.2‐ RGRCP Class IV should be used. Reference Addendum No. 1 for details.
Question #3.3 ‐ Re: MAG Specs 205 & 215, Drawing Sheet 13, Bid Item No. 38 ‐ Drainage Excavation, is to conform to MAG Specs 205 & 215. The Technical Specifications are not clear on what quantity will be measured for payment (e.g. excavation, fill, both, or net). MAG Spec 215 states payment is per cubic yard of excavation. Please confirm payment under Bid Item No. 38 will be per cubic yard of excavation. If not, please clarify what cubic yardage will be compensated under Bid Item No. 38. Answer #3.3 ‐ The intent of this item is to cover the excavation required for the enlargement of the retention basin on the west corner of the intersection. Question #4 ‐ Even though there is no true intersection, do we need to add color to the
sidewalk ramps as stated in the COT T‐351 States?
Answer #4 ‐ Concrete coloring shall match existing concrete in the vicinity of the intersection. Question #5 ‐ What size rock do you want for the exposed aggregate concrete for the medians and for the banding of the sidewalk? Answer #5 ‐ Exposed aggregate rock size shall match existing as closely as possible.
Question #6 ‐ There are two different styles of existing sidewalk. One has 12” exposed bands
with 3’x3’ squares and the second is 18” exposed bands with 2.5’x2.5’ squares. The spec calls
out for the 12” exposed bands with 3’x3’ squares. Doing this will cause some areas of sidewalk
not match the existing. How should we proceed?
Answer #6 ‐ Sidewalk banding shall match adjacent banding dimensions where possible. Question #7 ‐ What vendor and style of bench would you like used for the bus shelter?
Answer #7 ‐ See Answer #1.3 to Question #1.3. Question #8 ‐ Are there roadway profiles to be shared?
Answer #8 ‐ Curb line staking is provided in the project plans. Questions #9 – There is no bid item for roadway excavation. Should we add it or include it sub‐grade prep? Answer #9 ‐ Roadway excavation is included under Item 6 – Subgrade Preparation per MAG Section 301.7. Questions #10 – Is there an anticipated start date? Answer #10 ‐ November/December 2020. Questions #11 – Is there DG in the retention basin? Answer #11 – Decomposed Granite has been added to the retention basin area. See Addendum No. 1. Questions #12 – The Retention Basin and the sidewalk on the east side of the project appear to
be outside the right of way, do we need TCE’s to work in these areas?
Answer #12 ‐ Proposed sidewalk on the east side falls within an existing sidewalk and landscape easement.
Questions #13– There is no bid item for Parkway grading. Should we add a line item or include
it one that already exists?
Answer #13 – Parkway grading is considered incidental to the cost of installing the sidewalk. Questions #14– Will the city ordinance for fees for closing sidewalks and lanes of traffic be waived for this project? Answer #14 – Traffic control for lane closures and sidewalk closures will have to be submitted for approval through the typical City processes. Questions #15 – Does the allowance for traffic control include the install and removal of temp
asphalt, curb and medians to allow traffic to be maintained? If it is not included in the traffic
control allowance can we add a line item?
Answer #15 – It is intended for all items related to maintenance of traffic fall under the traffic control allowance item. Questions #16 – I don’t see any electrical drawings showing the power source to the bus shelter. Answer #16 – Bus shelter is to be solar powered per provided details.
Questions #17 – I don’t see any electrical plans showing the conduit runs
Answer #17 – Bus shelter is to be solar powered per provided details. Contractor shall coordinate with SRP to relocate the streetlights per Bid Item 92. Questions #18 – How are we to price the LED lighting on the bus shelter per COT T‐654. It says it may be solar or from power in the detail? Answer #18 – Bus shelter is to be solar powered per provided details. Question #19 ‐Re: Drawing Sheet 5; Contract Drawing Sheet 5 of 31 shows the relocation of the
existing fire hydrant (installation per Bid Item No. 27), as well as a 2" connection. No details are
provided for the depth of the existing water line, nor the invert of the line at the new hydrant
location. Please provide the invert elevations for the existing water line at all points of
connection, as well as the permanent hydrant location.
Answer #19 ‐ Contractor will be responsible for verifying depths of inverts prior to construction.