2400 33RD ST CONTRACT AGREEMENT 2016-01-01 MF Import

ATTACHMENT A TO SECTION 01900 REVISIONS TO THE STANDARD PLANS AND SPECIFICATIONS The followinq revisions, consisting of "Amendments" and "Supplements and Modifications" (hereinafter also called out as "Special Provisions" but which "Special Provisions" are only applicable to ihe Star :ard Specifica;ions), shall be used in conjunction with the 2006 Standard Specifications. AMENDMENTS TO THE STANDARD SPECIFICATIONS The following Amendmenis to the Standard Specifications are made a part of this contract and supersede any contlicting arovisions of ihe Standard Specifications. For informational purposes, the date tollowing each Amendi*�ent title indicates the implementztion date of ihe Amendment or thE latest date of revision. Each Amendment contains all current revisions to ihe applicable section of ihe Standard Specifications and may include reterences which do not apply to this particular project. SECTION 2-09, STRUCTURE EXCAVATION January 3, 2006 2-09.3(1)E Backtilling Item 1 0( the first paragraph under Compaction is revised to read: Backfill supporting roadbed, roadway embankmenis, or structures, including backfill providing lateral suppod for noise barrier wall foundations, luminaire poles, traffic signal standards, and roadside and overhead sign stcucture (oundations — placed in horizontal layers no more than 6 inches lhick with each layer compacte:d to 95 percent of ihe maximum density determined by the Compaction Control Test, Section 2 03.3(14)D. SECTION 6-02, CONCRETE STRUCTURES December 4, 2006 6-02.3(5)H Sampling and Testing far Compressive Strength This section including title is revised to raad: 6-02.3(5)H Sampling and Testing for Compressive Strength and Initial Curing Acceptance testing (or compiessive strengih shall be conducted at the same frequency as the acceptance te�is tor temperalure, consistency, and air conter.t. The Contrr.cior snall provide, and mainlain cure boxes for curing concrete cylinders. The Contraclor shall also provide, maintain and operale all necessary power sources and connections needed to operate the curing box. Concrete cylinders shall be cured in a cure box in accordance with WSDOT FOP tor AASfiTO T 23. The cure boxes shall maintain a ter,iperature between 604F and 80°F for concrele with specified s�renglhs Iess than 6000 psi and between 68°F and 78°F for concrete with specified strengths of 6000 psi and higher. A minimum/maximum ihermometer shall be installed to measure tlie internal temperature of the cure box. The thermometer shall be readable from outside of ihe box and be capable o( recording the high and Iow temperatures in a 24-hour period. The cure boxes shail create an environment that prevents moislure loss irom ihe concrete specimens. ihe top shall have a evorking lock and �he interior shall be rustproof. A moisture-proof seal shall be provided between the lid and the box. The cure box shall be the appropriate size to accommodate the number of concrete acceptance cylinders necessary or ihe Contractor shall provide additional cure boxes. Once concrete cylinders are placed in the cure box, ihe cure box shall not be moved until the cylinders have been cured in accordance with these specitications. When concrete is placed at more than one location simultaneously, multiple cure boxes shall be provided. The Contractor shall protect concrete cylinders in cure boxes from excessive vibration and shock waves during the c�ring period in acwrdance with Section 6-02.3(6)D. 6-02.3(6)D Protectinn Against Vibration The las� sentence in the second paragraph is revised to read: Capital Projects Commuter Rail Attachment A to SPction 01900 - 1 IFB No. RTA/CP 21-06 � Everett Station Phase 2REVISIONS TO THE STANDARD PLANS AND SPECIFICATIONSAddendum No.4