MCT 20-3 posted: updates Construction Manual sections 3-9, 4-12, and 4-40

Madrid, Jennifer@DOT Jennifer.Madrid at
Wed Jul 29 11:03:37 PDT 2020

Dear Subscriber:

We have posted MCT 20-3, update to Construction Manual Sections 3-9, "Payment," 4-12, "Temporary Traffic Control," and 4-40, "Concrete Pavement," to our website:

Section 3-9, "Payment"
Section 3-903C, "Tentative Agreements," identifies the use of CEM Form-4907, "Tentative Daily Extra Work Agreement," for daily tentative agreement with the contractor on labor, equipment, and materials used in extra work at force account for approved change orders. This form is to be used in place of district forms to assure statewide consistency.

Section 4-12, "Temporary Traffic Control"
Changes throughout include guidance for the revisions and additions to the temporary traffic control devices in Section 12, "Temporary Traffic Control," of the Standard Specifications.

Section 4-40, "Concrete Pavement"

Section 4-4003B, "Paving," is updated to reflect current standards and methods for making and curing concrete test specimens for flexural strength. The process follows California Test 523, "Method of Test for Flexural Strength of Concrete (Modulus of Rupture)," which conforms to ASTM C31, "Standard Practice for Making and Curing Concrete Test Specimens in the Field."

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