1.6
QUALITY ASSURANCE
1.6.1
Concrete Mixture Design
At least 30 days prior to concrete placement, submit proportions for a
concrete mixture for each strength and type of concrete. Submit a complete
list of materials including type; brand; source and amount of cement,
aggregate, fly ash, (or slag pozzolans), silica fume, ground slag,
polypropylene fibers, anti-washout and other admixtures for underwater
concreting, corrosion inhibitors; and applicable reference specifications.
Submit additional data regarding concrete aggregates if the source of
aggregate changes. Submittal shall clearly indicate where each mixture
will be used when more than one mix design is submitted. An identical
concrete mixture previously approved within the past 12 months by the
[_____] Division, Naval Facilities Engineering Command, may be used without
further approval, if copies of the previous approval and aggregate, fly
ash, silica fume, and pozzolan test results are submitted. The approval of
aggregate, fly ash, silica fume, and pozzolan[, and polypropylene fibers]
tests results shall have been within 6 months of submittal date. Obtain
acknowledgement of receipt prior to concrete placement. The mixture shall
be prepared by an accredited laboratory experienced in this field and under
the direction of a licensed/registered civil engineer, who shall sign all
reports and designs. Refer to Section 01450N DESIGN AND CONSTRUCTION
QUALITY CONTROL.
1.6.2
Drawings
1.6.2.1
Reinforcing Steel
ACI SP-66. Provide bending and cutting diagrams, assembly diagrams,
splicing placement and laps of bars, shapes, dimensions, and details of bar
reinforcing, accessories, and concrete cover. Do not scale dimensions from
structural drawings to determine lengths of reinforcing bars. Only
complete drawings will be accepted.
1.6.2.2
Formwork
ACI 347R. Include design calculations indicating arrangement of forms,
sizes and grades of supports (lumber), panels, and related components.
Indicate placement schedule, construction, and location and method of
forming control joints. Include locations of inserts, pipework, conduit,
sleeves, and other embedded items. Furnish drawings and descriptions of
shoring and reshoring methods proposed for slabs, beams, and other
horizontal concrete members.
1.6.3
Certificates
1.6.3.1
Curing Concrete Elements
Submit proposed materials and methods for curing concrete elements.
1.6.3.2
Form Removal Schedule
Submit schedule for form removal indicating element and minimum length of
time for form removal. Submit technical literature of forming material or
liner, form release agent, form ties, and gasketing to prevent leakage at
form and construction joints. Provide a full description of materials and
methods to be used to patch form-tie holes.
SECTION 03311
Page 14
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