Construction of flat monolithic reinforced concrete foundation slabs in buildings and structures

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Content

STANDARD TECHNOLOGY CARDS FOR THE EXECUTION OF SPECIFIC TYPES OF WORK

SECTION 04

STANDARD TECHNOLOGY CARD FOR CONCRETE AND REINFORCED CONCRETE WORKS (MONOLITHIC CONCRETE)

4.01.01.63

CONSTRUCTION OF FLAT MONOLITHIC REINFORCED CONCRETE FOUNDATION SLABS IN GENERAL-PURPOSE BUILDINGS AND STRUCTURES WITH SLAB THICKNESS UP TO 1200 mm

MOSCOW-1989

DEVELOPED BY

Promstroyproekt Institute of the USSR Gosstroy. Chief Engineer of the Institute V.I. Korolev, Head of the Department B.M. Tiunov, Chief Project Engineer Yu.S. Yezersky

APPROVED BY

Department of Mechanization and Construction Technology of the USSR Gosstroy Letter No. 23-712 dated December 14, 1988. Effectuated on February 1, 1989.

1. SCOPE OF APPLICATION

This standard technology card was developed for the construction of flat monolithic reinforced concrete foundation slabs in general-purpose buildings and structures with slab thicknesses up to 1200 mm.

The parameters of the monolithic reinforced concrete slab for the technological basement are averaged based on actual applications in the projects of the Promstroyproekt Institute.

The reinforcement of the foundation slab structures is designed with flat meshes and spatial frameworks; the joints of the mesh and framework reinforcement are lapped, without welding, and staggered.

The calculation of labor costs, the work execution schedule, the requirement for material and technical resources, and the technical and economic indicators are prepared for a slab measuring 37.2x44.35 m (temperature block) with a thickness of 1.2 m (base variant).

This card also allows, using facets, for the calculation of the aforementioned indicators for a slab with a thickness of 0.8 and 0.4 m.

The technology card provides for the construction of a monolithic foundation slab using the 'Monolit-77' standardized modular panel formwork, preassembled into enlarged formwork panels.

The technology card includes 3 variants for supplying and placing the concrete mix: using the SB-126A truck-mounted concrete pump (base variant), KB-404 rail-mounted tower cranes (variant 2), and the LBU-20 concrete placer (variant 3).

Loading and unloading, reinforcement, and formwork operations are carried out by a truck crane with a lifting capacity of 6.3 t.

When adapting the technology card to a specific facility and construction conditions, the scope of work, labor cost calculation, and mechanization means are refined, taking into account the available fleet of machines, equipment, and tools.

2. ORGANIZATION AND TECHNOLOGY OF WORK EXECUTION

Prior to the start of the foundation slab construction, the following works must be completed:

surface water drainage from the excavation pit organized;

access routes and motor roads constructed;

movement paths for machinery, storage areas for reinforcement meshes, and formwork assembly areas marked, and installation rigging and tools prepared;

blinding concrete for foundations completed;

reinforcement meshes, frameworks, and formwork sets delivered in quantities ensuring uninterrupted work for at least two shifts;

foundation base acceptance certificates drawn up in accordance with the as-built scheme;

temporary electrical lighting of the workplaces arranged and electric welding machines connected;

performed g

Fig. 1 — Layout and cross-section of formwork installation using a crawler crane in an excavated pit, including details of an enlarged formwork panel.

Fig. 1 — Concreting layout plan detailing machinery positioning and operational radii for a large-scale construction site — Fig. 2 — Concreting layout plan detailing machinery positioning and operational radii for a large-scale construction site

Fig. 1 — Layout plan for sequential concrete pouring of a foundation slab, showing pouring zones, construction joints, and equipment working radius — Fig. 3 — Layout plan for sequential concrete pouring of a foundation slab, showing pouring zones, construction joints, and equipment working radius

Fig. 1 — General layout and equipment arrangement for the construction of a continuous concrete structure using precast elements and a mobile concrete pump — Fig. 4 — General layout and equipment arrangement for the construction of a continuous concrete structure using precast elements and a mobile concrete pump

Fig. 1 — Sectional diagram of continuous concrete pavement construction using a mobile concrete pump — Fig. 5 — Sectional diagram of continuous concrete pavement construction using a mobile concrete pump

Fig. 1 — General site plan and cross-section (1-1) of foundation pit excavation and slab construction using dual tower cranes — Fig. 6 — General site plan and cross-section (1-1) of foundation pit excavation and slab construction using dual tower cranes

Fig. 1 — Plan view of industrial furnace layout detailing refractory lining, burner placement, and structural dimensions — Fig. 7 — Plan view of industrial furnace layout detailing refractory lining, burner placement, and structural dimensions

Fig. 1 — Layout of working construction joints for concrete pouring — Fig. 8 — Layout of working construction joints for concrete pouring

Fig. 1 — Mechanized installation and weighting of a pipeline using precast concrete slabs and heavy lifting equipment — Fig. 9 — Mechanized installation and weighting of a pipeline using precast concrete slabs and heavy lifting equipment

Fig. 1 — Sectional view of concrete pavement construction using a slipform paver, detailing segment dimensions and subgrade integration. — Fig. 10 — Sectional view of concrete pavement construction using a slipform paver, detailing segment dimensions and subgrade integration.

Fig. 1 — Construction process schedule detailing labor costs, team composition, and task durations for various concrete and formwork operations — Fig. 11 — Construction process schedule detailing labor costs, team composition, and task durations for various concrete and formwork operations