Precision installation of tower structure on concrete foundation

S. Sinha, D. B. Pedram, R. G. Gabhale, K. G. Chaudhari

Abstract

Accurate installation of precisely machined structures on civil foundations maintaining all the required accuracies is an intricate task. In the present case, the interface of the structures is through four numbers of bearing plates and clamping bolts. To keep this bearing plate in position within required alignment is a challenge due to compaction required during concrete casting and drying shrinkage thereafter. Levels of the individual bearing plates can be maintained within 4-5mm at the time of casting the foundation. Due to difficulties in maintaining level and relative position of the bearing plates with clamping bolts, the interface holes of the structure may not match. These inaccuracies in position of clamping bolts and level of bearing plates will lead to deviation in mission critical alignment of structure. A precise method is developed at R&DE(Engrs) for installation of precisely machined structures demanding accurate installation on concrete foundation. The paper elaborates this innovative procedure adopted for installation of such structure with its RCC counterpart to achieve essential stringent alignment accuracy of 5 minutes in azimuth.

Keywords

Pile foundation; RCC; Lattice structure; Flatness Co-centricity; Alignment; Verticality; Jig; Jig Transit

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IMEKO-TC14-2007-68.pdf

DOI

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IMEKO TC

TC14 - Measurement of Geometrical Quantities

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