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INDIAN RIVER COUNTY JULY 25, 2014
<br />INTERGENERATIONAL RECREATION CENTER 100% CONSTRUCTION DOCUMENTS
<br />A. Ready -Mixed Concrete: Measure, batch, mix, and deliver concrete according to
<br />ASTM C 94/C 94M and ASTM C 1116/C 1116M, and furnish batch ticket information.
<br />1. When air temperature is between 85 and 90 deg F, reduce mixing and delivery time from
<br />1-1/2 hours to 75 minutes; when air temperature is above 90 deg F, reduce mixing and
<br />delivery time to 60 minutes.
<br />PART 3 - EXECUTION
<br />3.1 FORMWORK
<br />A. Design, erect, shore, brace, and maintain formwork, according to ACI 301, to support vertical,
<br />lateral, static, and dynamic loads, and construction loads that might be applied, until structure
<br />can support such loads.
<br />B. Construct formwork so concrete members and structures are of size, shape, alignment,
<br />elevation, and position indicated, within tolerance limits of ACI 117.
<br />C. Limit concrete surface irregularities, designated by ACI 347 as abrupt or gradual, as follows:
<br />Class A, 1/8 inch for smooth -formed finished surfaces.
<br />Class B, 1/4 inch for rough -formed finished surfaces.
<br />D. Construct forms tight enough to prevent loss of concrete mortar.
<br />Fabricate forms for easy removal without hammering or prying against concrete surfaces.
<br />Provide crush or wrecking plates where stripping may damage cast concrete surfaces. Provide
<br />top forms for inclined surfaces steeper than 1.5 horizontal to 1 vertical.
<br />1. Install keyways, reglets, recesses, and the like, for easy removal.
<br />2. Do not use rust -stained steel form -facing material.
<br />F. Set edge forms, bulkheads, and intermediate screed strips for slabs to achieve required
<br />elevations and slopes in finished concrete surfaces. Provide and secure units to support screed
<br />strips; use strike -off templates or compacting -type screeds.
<br />G. Provide temporary openings for cleanouts and inspection ports where interior area of formwork
<br />is inaccessible. Close openings with panels tightly fitted to forms and securely braced to
<br />prevent loss of concrete mortar. Locate temporary openings in forms at inconspicuous
<br />locations.
<br />H. Chamfer exterior corners and edges of permanently exposed concrete.
<br />Form openings, chases, offsets, sinkages, keyways, reglets, blocking, screeds, and bulkheads
<br />required in the Work. Determine sizes and locations from trades providing such items.
<br />J. Clean forms and adjacent surfaces to receive concrete. Remove chips, wood, sawdust, dirt,
<br />and other debris just before placing concrete.
<br />K. Retighten forms and bracing before placing concrete, as required, to prevent mortar leaks and
<br />maintain proper alignment.
<br />CAST -IN-PLACE CONCRETE 033000 - 11
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