2016-01-18_REPORT - M1977493

• Permit No: M1977493
• IBM Index Class Name: REPORT
• Doc Date: 1/18/2016
• Doc Name: Asbestos Disposal Shaft Closure Report
• From: Climax Molybdenum
• To: DRMS
• Email Name: ECS
• Media Type: D
• Archive: No

SPECIFICATION NUMBER:
Climax Molybdenum CONCRETE CONSTRUCTION 03 30 00 SPE
AFreepor€-McMoRanCompany TECHNICAL SPECIFICATION PROJECT NAME:
CAVR Shaft Closure Project
1. Although cold joints are not anticipated or required for this project, if
complete concrete placement is discontinued for any reason, the following
procedures for cold joints shall be followed:
a. The surface of the first concrete placement shall be left in a roughened
stated and not floated or finished to leave a good surface of well bonded
aggregate.
b. Hardened concrete surfaces on which new concrete is to be placed shall
be kept wet for 24 hours prior to the pour. Pools of free-standing water
shall be removed and a neat cement mortar having about the same
proportion of cement to sand as the new concrete shall be well brushed
into the surface just prior to placing the new concrete. This mortar shall
not be allowed to dry out or harden before the new concrete is placed.
B. Cleaning
1. All debris, foreign material, ice and snow shall be cleaned from the interior
of forms,trenches or excavations. Concrete shall not be placed on or against
frozen soil or subgrade unless a written procedure is submitted to the
Engineer for approval.
2. Forms, reinforcement and embedded items shall be free of all dirt, oil and
foreign material including hardened or dried concrete or curing compound
splashed on them from previous concrete placements.
C. Inspection Prior to Placement
1. The terms "shall be", "shall have been", "shall be checked" or "shall be
verified"will mean the work has been performed with the knowledge of and
to the satisfaction of, or under direct supervision of,the Engineer or Owner.
2. Formwork, placement of reinforcement and embedded items shall have
been checked for dimensions, elevations, location and tolerances prior to
placing concrete.
3. Formwork shall have been checked for design, shoring and adequacy in
accordance with Section 3.02E.D of this Specification.
4. Reinforcement shall have been checked for proper size, positioning,
welding, tying and support in accordance with Section 3.02H of this
Specification, and the Design Drawings.
5. All equipment required for the placing of concrete in the work shall have
been properly cleaned and the operation of mechanical equipment checked
for reliability to perform its intended use.
114-910345 CONCRETE CONSTRUCTION
Climax CAVR Shaft Closure Project 03 30 00 SPE-14