CMS update

CMS – Geotechnical Update03/07/07 : 

CMS – Geotechnical Update 03/07/07 Lime and Cement Testing Requirements Will be posted April 20, 2007 Foundation Improvement Plan Note S-1015, SS-878 & SS-879 Compaction Testing Specifications Posted April 21, 2006 SS-840 MSE Wall Specification Posted July 21, 2006 then January 19, 2007

Lime and Cement Testing: 

Lime and Cement Testing Supplements to replace Section 206.06 S-1120 Lime and Lime Kiln Dust Percentage Design for Soil Kiln Dust materials in Appendix S-1121 Cement and Cement Mixture Percentage Design for Soil S-922 Certification Procedure for Hydrated and Quick Limes

General Changes: 

General Changes Allowing more Chemicals Not Relying on PI as much PI< 20 Cement & PI>20 Lime Using Minimum Compressive Strengths Use in Design and Construction More Testing Prior to Construction

General Changes (Cont.): 

General Changes (Cont.) Sampling Procedure Defined Expansion Testing More Detailed Reporting Requirements Verification Testing Samples taken after mixing and retested

S-1120 Lime and Lime Kiln Dust Design: 

S-1120 Lime and Lime Kiln Dust Design Using Ph Testing & Strengths Minimum Compressive Strengths Lime 100 psi & Kiln Dust 150 psi Kiln Dust variable Kiln Dust ‘Only’ allowed by Special Note Kiln Dust 1/3 Cost of Lime Testing Ensures Same Quality

S-1121 Cement and Chemical Mixtures: 

S-1121 Cement and Chemical Mixtures Testing Cement, Cement & Lime and Cement and Kiln Ash Minimum Compressive Strength 150 psi Lime and Kiln Dust lowers the PI Cement increases strength Can be used for a Variety of Soils Can use mixtures when PI > 20 Mixtures ‘Only’ allowed by Special Note

S-922 Certification Procedure for Hydrated and Quick Limes: 

S-922 Certification Procedure for Hydrated and Quick Limes Certified Test Data used in the Past Material received with no verification checks Establishes QA/QC Procedure Quality Control Plan Required Plan Acceptance Random Testing

Sample Ph Testing &(Supplier Training for Testing): 

Sample Ph Testing & (Supplier Training for Testing)

Foundation Improvement (Plan Note): 

Foundation Improvement (Plan Note) Preventing Foundation and Benching Failures.

General Changes: 

General Changes Fill Foundations < 30’ Scalped Fill Foundation > 30’ Scalped Under the Slopes Steeper than 4 to 1. Exposing the Foundation to Evaluate Soft Conditions. Remove, Plow, Disk or Compact Foundation Replacement Items Embankment, granular materials etc…

Foundation Construction Methods: 

Foundation Construction Methods Scalp Plow and Mix Top Foot 10 passes then 10 Perpendicular Direction Disk top one foot 5 passes then 5 Perpendicular Direction May use Power Driven Rotary Mixer Instead of Plow, Mix and Disking Methods Compact with 25 ton Footed Roller Test Roll with 35 Ton Truck Test Pits used for the Investigation

New Pay Items: 

New Pay Items Scalping, Foundation Plowing, Foundation Disking and Foundation Compaction Paid by the Square Yard Foundation Test Rolling and Test Pit by Hour Replacement Items Excavation Embankment Granular Materials Granular Types Geotextile Fabric

S-1015 Compaction Testing for Unbound Materials: 

S-1015 Compaction Testing for Unbound Materials Created one compaction and inspection table for S-1015, SS-878 and SS-879 Same number and type of inspections and compaction tests are taken regardless of which specification is used in the contract. Created CA-EW-12 Inspection Form

Compaction and Inspection Table 1015.10-1: 

Compaction and Inspection Table 1015.10-1 Details: Materials, Test or Method, Maximum Lot Size and Minimum Number of Tests Partial Table below

CA-EW-12 Inspection Form: 

CA-EW-12 Inspection Form Details Location Equipment used Type of Soil Wetting or Drying Lift Thickness Estimated Quantities Tests and Results Instructions Gives a Check list

SS-878 Inspection & Testing of Unbound Materials: 

SS-878 Inspection & Testing of Unbound Materials New Specification Used when ODOT needs inspection help SS 878 and 879 similar specifications SS-878 pays for the inspection and compaction testing as a lump sum pay item Covers Items 203, 204, 205, 206, 304, 307, 411, 503, 603 and MSE wall select granular backfill SS-879 pays for the work as an incentive pay to the contract Only covers Items 203 and 204

SS-878 Inspection & Testing of Unbound Materials (Cont.): 

SS-878 Inspection & Testing of Unbound Materials (Cont.) Full time ‘qualified’ inspection and compaction testing NICET-Level 2-(National Institute for Certification of Engineering Technologies) Similar Qualifications allowed until July 1, 2007 All compaction tests after this date NICET is required Compaction tests according to S-1015 Documented on Department forms Daily and summary documentation reports every two weeks Department takes QA compaction tests Lump sum payment for this work Past notes required compaction testing only SS-878 requires inspection and compaction testing

SS-879 QC/QA for Embankment Construction: 

SS-879 QC/QA for Embankment Construction Several references made in 879 to 878 Same work with payment mechanism different Full time ‘qualified’ inspection and compaction testing for Items 203 and 204 Compaction tests according to S-1015 Documentation performed on Department forms Same qualifications requirements as 878 Department performs QA compaction tests. Pay adjustment plus or minus 4 % to the amount bid for Items 203 and 204 Based on the percentage passing of the QA tests

879 Incentive or Disincentive: 

879 Incentive or Disincentive

879 Items : 

879 Items

SS-840 MSE Wall Construction(Geotechnical Changes): 

SS-840 MSE Wall Construction (Geotechnical Changes) Combined all of the Old Special Provisions Direct shear testing for select granular backfill. Foundation evaluation during construction Original Design Consultant paid thru Construction Services Select granular inspection and compaction testing Refers to SS-878….

Construction Administration Training and Reports: 

Construction Administration Training and Reports Construction Administrations Web Site: http://www.dot.state.oh.us/construction/OCA/training/training.htm

Construction Training and Reports: 

Construction Training and Reports HT Training : Basic Earthwork Manual and Presentations 1-8 Advanced Earthwork Manual and Presentations 1- 5 Rock Blasting Subgrade for Engineers Soft Foundations Drainage for Landslides MSE Wall Presentations and Reports LAW-7-7.25 Geotechnical Summary Old Pipe Construction Training

Questions: 

Questions