FIELD DOCUMENTS - Laserfiche WebLink

Home Browse Search

I Project No. JB-20100 • 4 December 2000 Page 14 I square inch (psi). The design concrete compressive strength should be specified in order to attain the recommended MR. Our experience is that a compressive strength of about 4,500 psi is required for a MR • of 600 psi. i. The rigid pavement section should consist of aggregate interlock joints. j. Joint spacing should be at a maximum of 15 feet square. k. The rigid pavement section should be designed according to the latest Portland Cement Association (PCA) recommendations (ref. PCA publication "Design and Control of Concrete Mixtures"). I. Concrete placement and curing operations should be according to the American Concrete Institute and PCA. Improper curing techniques and/or excessive slump could cause excessive shrinkage, cracking, and/or curling. • 5.8 Miscellaneous Our exploration did not reveal the presence of buried items such as leaching ' fields, wells, storage tanks, etc other than previously discussed. It is possible, however, that such items may be present. If such items are encountered during grading or during excavations of foundations, our firm should be notified immediately to provide recommendations for proper procedures. Also, this study did not include investigations for toxic ' substances or groundwater contamination of any type. If such conditions are encountered during site development, additional studies will be required. • 5.9 Plan Review l Before submitting design drawings and construction documents to the s appropriate local agency for approval, copies of the documents should be reviewed by our firm to ensure that the recommendations in this report have been effectively incorporated. 5.10 Construction Observations We recommend that our representative be present during grading and foundation excavation to observe that the work performed is in conformance with specifications and recommendations provided here. We will also perform testing as necessary to evaluate the quality of the materials and J their relative compaction. Records will be maintained of our site visits and test results. gKorbmacher Engineering, Inc.