[Encofrados] ACI 04+Guide+to+Formwork+for+ – uDocz. ACI supersedes ACI R and became effective October 15, ACI Guide to Formwork for Concrete An ACI Standard. Reported by ACI Committee Pericles C. Stivaros Kevin L. Wheeler Chair Secretary. Rodney. distribution and storage media, without the written consent of ACI. . ACI R- 14 supesedes ACI and was adopted and published July Copyright .
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Deflec- specification requirements for the concrete surface texture. Tilt-up and precast during manufacture or applied to the form before each use. Ac attention should be paid to uplift pressures walls, and similar structures.
Erson Dov Kaminetzky Rolf A. Ties should be tight fitting or supporting beams instead of in the more customary regions tie holes in the form should be sealed to prevent leakage at of low shear. If high early-strength concrete is Under 10 ft 3 m clear span used, these periods can be reduced as approved by the engi- between structural supports Forces imposed on 7.
Positive steps should be taken securely held in position to reproduce the design shown on to inspect, record, and document the procedures used to cure the plans.
Manufacturers This tabulated information should not be interpreted to publish design data and test information to assist in the exclude the use of any other materials that can meet quality selection of proper form anchor devices. Unnecessarily exacting requirements can b. Vertical hold down anchors are required.
347-04: Guide to Formwork for Concrete
Forms and supports should cleaned and dried thoroughly so 34704 the glue will bond. In addition, the handbooks, standards, specifications, and other data sources cited herein are listed in more detail in Formwork for Concrete and in the references for Chapter 4 and Chapter 8 of this document. There are two basic types of tie rods: If reviewed by persons other material storage, runways, and impact.
The drawings must show the jack layout, formwork, working During the initial placing of the concrete in the slipform, decks, and scaffolds. Corners should be carefully detailed to prevent grout The gasket is compressed when the formwork is assembled leakage.
It can be in direct contact concrete, or other members. Arch forms should not be stripped prema- the pressure should be compatible with the pressures turely when unvented groundwater seepage could become discussed 347-4 vertical loads in Section 6. Water-tight forms check for dimensional tolerances specified by the architect that require more care during vibration to remove entrapped air can have a bearing on the 374-04 of the forms. Shoring of members that will act structure should be considered.
Both factory-made and job-site fabri- members, such as joists or studs.
Guide to Formwork for Concrete
On major work, this is materials, design, and construction of the formwork, and frequently achieved by specifying a preconstruction mockup placing and consolidation of the concrete to eliminate bulges, prepared and finished by the contractor for approval by the offsets, or other unsightly features in the finished surface and architect, using proposed form materials, jointing tech- to maintain the integrity of the surface texture or configura- niques, and form surface treatments, such as wetting, oiling, tion.
Other sections are devoted to form- 1. Frequently, concrete is layered in dures of decentering and stripping. Chapter 6—Special structures, p. No form coating Pour pockets for vibrating or placing concrete should be should be used unless it can 3470-4 demonstrated not to stain the planned to facilitate careful placement and consolidation of concrete or impair the adhesion of paints or other surface 374-04 concrete to prevent segregation, honeycomb, sanding, or treatments.
Refer to Section 2. Help Center Find new research papers in: If tie holes are not to be exposed, ties form surfaces.
Accordingly, in communication of the loads, it should be clear whether they are service loads or factored loads. Where truss systems are structural design loadings should be made after hardening of used, connections should be designed to keep eccentricities as the concrete but before removal of the supports also refer to small as possible to minimize deflections or distortions.
Chemicals can have an tance, several should be made to represent the variation that effect on the final product, whether used as additives in the can occur in the finish. If surface appearance is important, forms should ances are not specified or shown.
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Sharp corners should, wherever possible, be elimi- or placed against the existing concrete. Lacing to reduce the shore slenderness ratio can be to Fig. Specifying tolerances more stringent 3. For wall the loads 347-044 to the floors, shores, and reshores or forms exposed to the elements, the minimum wind design backshores as a result of the construction sequence.