specs

Section 03411
Page 2
Accepted samples shall remain on the job for comparison to the finished product throughout the course of the
work.
PART 2 - PRODUCTS
2.01. REFER TO THE FOLLOWING SECTIONS:
A. Structural Concrete: Section 03300.
B. Concrete Reinforcing: Section 03200.
C. Embedded Metal Assemblies and Inserts: Section 03250.
2.02. MISCELLANEOUS PRODUCTS:
A. Bond Breaker: Silcoseal 2000F as manufactured by the Nox-Crete Company, Omaha, Nebraska.
2.03. FINISHES AND EXPOSED AGGREGATE:
A. Special aggregates and finishes on faces of panels shall be as shown on Drawings.
PART 3 - EXECUTION
3.01. FORMWORK
A. The design layout and engineering of formwork, as well as its construction, shall be the responsibility of the
Contractor. Panels must be square and plumb and conform to the shapes shown on the Drawings.
B. All necessary forms and molds shall be built to conform to the shapes, lines and dimensions of the different
wall panels. Forms shall be set to line and grade, so braced and secured to withstand the placing of the
concrete and maintain their shapes and positions. Under no circumstances shall the floor slab be broken or
drilled to fasten the forms. Forms shall be sufficiently tight and substantially assembled to prevent bulging or
leakage of mortar. Forms shall be assembled in such manner to facilitate their removal without damage to the
concrete.
C. Construct forms with such care to produce concrete surfaces which will not leave unsightly or objectionable
form marks in exposed concrete surfaces. Lumber once used as forms shall have all nails withdrawn therefrom
and the contact surfaces thoroughly cleaned and coated before reuse.
D. Accurately and securely place wood strips, weld plates, steel angles, blocking, molding, nailers, etc. in forms
as required to produce finished profiles, and surfaces shown on the Drawings. Coat wood strips, blocking and
moldings with form sealer. Special care shall be exercised in placing of concrete to avoid moving of inserts or
embedded items and to keep from scouring the bond breaker from the casting surfaces.
E. The Contractor shall furnish the bond breaker solution, and it shall be applied on the casting surface and on the
side forms in strict accordance with manufacturer's instructions.
3.02. REINFORCING STEEL
A. Shall be of sizes, shapes, length, spacing and other dimensions shown, shall be placed where and as detailed
on the Drawings, or as reasonably required to fulfill the intent and meaning of the Drawings and
Specifications. Before being placed in the work, reinforcement shall be thoroughly cleaned of rust, mill scale
or other coatings which might tend to reduce or destroy the bond.
B. Concrete wall surfaces shall be free of rust stains. Clip tie wires to prevent contact with forms and casting
surface. Concrete cover over reinforcing steel shall not be less in any direction than 2 inches for exterior faces
and one inch for interior faces.
3.03. MIXING AND PLACING CONCRETE
A. Concrete shall be mixed and placed in conformance with the requirements of Section 03300. Concrete shall
be vibrated continuously during the process of pouring until the full thickness is reached and all water is
brought to the surface.
3.04. FINISHING CONCRETE WALL SURFACES
A. Refer to Section 03300.
3.05. TOLERANCES
A. Precast concrete panels, after curing and aging, shall be true to size within the following tolerances:
NAPA CENTURY CENTER XD 12
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