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| Date Asked: 03/10/2021 | Date Answered: 03/10/2021 |
| Poster: Spiros Fotopoulos | Company: RIDOT |
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Question:
The Load Test requirement is stated as “115% of the design live load.” Is this based on Load Combination STR-I max, SER-1 max or other? Also, may the test be completed at the manufacturer’s facility and observed by the owner’s representative? |
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Answer:
The load test shall be 115% of the governing Service Load Combination. The test may be completed at the manufacturer’s facility and observed by the owner’s representative. |
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| Date Asked: 03/10/2021 | Date Answered: 03/10/2021 |
| Poster: Spiros Fotopoulos | Company: RIDOT |
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Question:
The requirement to pre-camber the 75 foot bridge 6 inches before dead and live load is applied would require special fabrication. The standard from the AASHTO Guide Specifications for FRP bridge is to account for dead load only. Could we pre-camber the bridge so that dead and full live load would create a net camber of 0 inches in lieu of 6 inches before dead and live load is applied to circumvent costs due to special fabrication? |
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Answer:
The specifications call for a camber in the 75-foot span of 6 inches AFTER dead load only is applied. This 6-inch camber is required for the 75’ span. Independently of camber, the span shall be designed to limit deflection due to live loads to 1/500 of span length per Job-Specific Specification section 801.9901. |
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| Date Asked: 03/10/2021 | Date Answered: 03/10/2021 |
| Poster: Spiros Fotopoulos | Company: RIDOT |
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Question:
Please verify that the deflection criteria is for pedestrian live loading only. |
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Answer:
Verified. The 1/500 deflection limit criteria is for pedestrian loading only. |
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| Date Asked: 03/10/2021 | Date Answered: 03/10/2021 |
| Poster: Spiros Fotopoulos | Company: RIDOT |
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Question:
Please verify that the truck loading shall be H5 (see specifications) in lieu of AASHTO LRFD Pedestrian Design Specifications requiring H10 truck loading. |
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Answer:
Verified. H5 is the design vehicle for this project. |
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| Date Asked: 03/09/2021 | Date Answered: 03/10/2021 |
| Poster: Anthony Mesiti | Company: Cardi Corporation |
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Question:
Item No. 14 - Structural Excavation. Out of the 500 CY, how many cubic yards are designated for the masonry bridge to be removed, cleaned and stacked at the Warren DPW? |
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Answer:
The Item No. 16 (203.0310) at 85-CY is the intended item to address the existing bridge masonry blocks to be removed cleaned and stacked at Warren DPW. |
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| Date Asked: 03/08/2021 | Date Answered: 03/10/2021 |
| Poster: Anthony Mesiti | Company: Cardi Corporation |
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Question:
Item No. 54 - Abut Footings - DOQ states 80 Cy but plans show 61 CY. Please clarify where the remaining quantity is located. |
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Answer:
The footing dimensions in the plans are correct to provide a concrete quantity of 31-CY at each abutment. The total quantity shall be 62-CY. The DOQ shall be revised to 62-CY. |
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| Date Asked: 03/08/2021 | Date Answered: 03/09/2021 |
| Poster: Lee Taylor | Company: D'Ambra Const. Co., Inc. |
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Question:
Please indicate if there are any pre-approved FRP truss bridge manufactures that have performed this type bridge structure in Rhode Island, or which RIDOT project used a bridge of this type of design. |
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Answer:
There are no pre-approved FRP bridge manufacturers. A FRP bridge structure was utilized on project 2018-CT-054. |
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| Date Asked: 03/05/2021 | Date Answered: 03/10/2021 |
| Poster: Anthony Mesiti | Company: Cardi Corporation |
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Question:
What are the embedment depths of the 12" pipe piles? |
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Answer:
The boring logs and estimated pile lengths are provided in the contract documents. The contractor shall order test piles for two Pile Dynamic Analysis (PDA’s) tests in the field in accordance with Foundation Note 5. Once the PDA’s are complete the Contractor’s engineer will prepare a PDA test report that will propose final driving criteria to the Engineer for review. Should the pile driving result in practical refusal before the bedrock elevation is achieved - for lateral pile stability, the minimum tip elevation shall be EL = -16.00 at the abutments and EL = -20.00 at the pier locations. A note will be added to the project plans by addendum. |
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