Erection of the building from cast-in-situ reinforced concrete

Contents

TABLE OF CONTENTS

Introduction

Source Data

Develop monolithic wall plan

Development of monolithic floor plan

Table of weights of main transported loads

Table of labour-intensive construction and installation works

Selection of tower crane

Crane binding

Determination of crane limit zones

Schedule

Conclusion

Introduction

The purpose of the work is to study the technology of erecting a residential multi-storey building with the maximum use of monolithic reinforced concrete and precast reinforced concrete.

Tasks:

Collect and analyze source data.

Develop plans for load-bearing cast-in-situ walls and cast-in-situ floors, calculate the volume of formwork, concrete reinforcement. Develop a plan of external walls from precast reinforced concrete. Calculate the number of prefabricated elements (reinforced concrete panels, ventilation units and stair flights).

Develop cargo lifting tables to identify the heaviest and most overall cargo for correct selection of crane equipment.

Calculate the normative labor intensity of construction and installation works.

Select the crane.

Develop a schedule taking into account the optimization of the process of erection of load-bearing vertical structures using monolithic railway technology.

Source Data

Construction area: St. Petersburg;

Start of construction: April 11, 2011;

Floor height: 3000 mm (3-4 et.);

External enclosing structure: three-layer prefabricated prefabricated panels t = 400 mm;

Construction of internal bearing walls: monolithic reinforced concrete t = 180 mm, resting at the ends on wall bearing three-layer railway panels t = 400 mm;

Floor structure: cast-in-situ reinforced concrete t = 180 mm;

Formwork type: large panel disassembling-rearranged;

Method of concrete mixture supply to the structure: tower crane + badya;

Prefabricated reinforced concrete elements: ventilation units, stairways, three-layer wall panels.

Conclusion

During the work, the specifics of the construction of a residential multi-storey building using the technology of monolithic and prefabricated reinforced concrete were studied.

Analysis of lifted loads has been carried out. Heaviest lifting load - wall panel

During erection KB515 crane is used. Boom departure is 35m, boom lifting height is 27.1 m. Crane lifting capacity is 10 tons. At the maximum boom departure (35m), the crane can raise 8 tons.

The construction of one floor took 49 days, taking into account the optimization of construction processes.

Total building construction time: 49 days * 3.5 floors = 172 days (5.7 months ).

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