Scope of Work.

Cherokee Nation Businesses is seeking qualified Geotechnical and Material testing firms to conducta soils investigation and report of subsurface exploration and geotechnical evaluation andprovide material testingservices for anew Tahlequah Health Services facility in Tahlequah, Oklahoma. Testing will include all on site work for the proposed improvements.

The work will consist of:

INITIAL SOILS INVESTIGATION OF SITE

Geotechnical Firm is to visit site and develop a report of subsurface exploration and geotechnical evaluation.

  1. The purpose of the geotechnical exploration is to determine general subsurface conditions at specific boring locations and to gather data on which to base a geotechnical evaluation with respect to the proposed construction.
  2. The information gathered during the exploration is evaluated to determine if any special site development issues should be addressed during the site grading phase of the project.
  3. The work includes soil test borings, laboratory analysis, and geotechnical evaluation appropriate to address the geotechnical aspects of the proposed construction.
  4. The investigation will conform to the Cherokee Nation Businesses Construction Guidelines and Requirements for Geotechnical Investigation, Soil Boring and Testing. (Attachment 1)

The results of the report are to address:

  1. General site geology.
  2. Summary of existing surface conditions.
  3. Description of subsurface conditions encountered at the soil test boring location.
  4. Description of the groundwater conditions observed in the boreholes during drilling. Long-term monitoring is not to be included.
  5. Presentation of laboratory test results.
  6. Site preparation considerations including material types to be expected at the site, treatment of any encountered unsuitable soils, excavation considerations, and surface drainage.
  7. Recommendations to be used for foundation design, including appropriate foundation types, bearing pressures and depths.
  8. Presentation of expected total and differential settlements, and recommendations to reduce the expected movements, if appropriate.
  9. Recommendations to be used for design of slab-on-grade, including modulus of subgrade reaction.
  10. Seismic site classification, according to 2015 International Building Code.
  11. Compaction requirements and recommended criteria to establish suitable material for structural backfill.
  12. Pavement recommendations for both rigid and flexible pavement design for assumed traffic volumes and design criteria.

CONSTRUCTION MATERIALS TESTING SERVICES

Generally, Geotechnical Firm shall, at each site visit, perform the following services and prepare and provide the following deliverables:

  1. Conduct site visits and material testing of construction materials related to subgrade, paving, concrete, pipe installation and backfill, etc. during construction.
  2. Prepare and provide written reports of site progress after each site inspection and test results.
  3. Prepare and provide a final report at the end of the project.

Specifically, the services and deliverables Geotechnical Firm shall perform, prepare and/or provide include, but are not limited to, the following:

  1. Evaluate subgrade compaction and sampling for laboratory testing.
  2. Evaluate aggregate base compaction and sampling for laboratory testing.
  3. Evaluate and observe bearing material for conformance with geotechnical report and plans.
  4. Observe and perform field and laboratory testing during placement of fresh concrete.
  5. Observe and perform field and laboratory testing during placement of mortar and grout as part of the structural CMU wall construction.
  6. Observe and sample hot mix asphalt.
  7. Provide all reports of testing and note deficiencies of tests.
  8. Structural 3rd Party Inspectors will conduct peer review of the current set of structural construction documents (plans and specifications). Review to consist of general structural compliance with IBC 2015, the geotechnical report and constructability standards.
  9. Generate review comments for owner, construction and design team review.
  10. Participate in construction team progress meetings in person or via conference calls.
  11. Provide site inspections during foundation pour.

Selected firm will work with Project Architect, Construction Manager/General Contractor, and Cherokee Nation Businesses Corporate Construction on issues or concerns as necessary.

Fees

Proposals are to be separated in to the scopes of work identified above, Initial Soils investigation and Construction Materials Testing.

The Initial Soils Investigation fee is to be a lump sum number based on the scope of services listed in Attachment 1, Cherokee Nation Businesses Construction Guidelines and Requirements for Geotechnical Investigation, Soil Boring and Testing

TheConstruction Materials Testing Services fee is to be a total cost per site visit and 2 drawing plan reviews. The cost/site visit is to be all inclusive, which includes the cost for the trip to and from the site, materials and labor for on-site testing and any lab testing that is required plus test report and all reimbursable costs.

The Geotechnical Firm shall complete the rate sheet, Attachment 2, and this shall be used as the basis for all work beyond the Initial Soils Investigation.

The following scaling is of a conceptual site plan. The numbers are rough footprint SF's. This information is only being provided to help determine number of borings.

  • Building - 155,000 SF
  • NE Garage - 57,000 SF
  • SW Garage - 61,000 SF
  • Surface Parking & Drives - 235,000 SF

The above generally does not include the landscape areas between these components.