Construction and Project Management

Two Storey Commercial Building

Construction Methodology – Erection Sequence of in situ reinforced concrete structural frame.
Completed 2012
Kavala, Greece
Enicon Ltd
1400 sqr

Two Storey Commercial Buildiing

Construction Methodology – Erection Sequence of in situ reinforced concrete structural frame.

Engaged by the main contractor, Enicon Ltd to design the construction methodology of a two-storey commercial building in Kavala, Greece.

Key factor of the project was the basement level – accommodating the MEP facilities as well as a number of parking spaces and logistics.

The plot being situated less than 50m from the coastline, the basement was below sea level. Excessive water ingress during the excavation was expected, compromising lateral stability as the stratigraphy determined sand with gravel deposits. A cofferdam solution with cantilevering sheet pile wall was proposed and implemented. Pre-drilling was applied along the perimeter in order to facilitate ease of SSP installation (accounting for the subsequent effect on the substrata).

Prior to the excavation, monitoring wells were designed and underground flow charts were mapped. Based on the results of this preliminary analysis, Technodynamics designed a series of pumping wells, allowing for the water level drop within the excavation. Secondary system for potential equipment failure was also designed in order to avoid flooding. For waterproofing purposes, supplementary analysis and design was conducted for early age thermal cracking (for a 1000mm raft slab pour during extreme temperatures of 38oC). Following the foundations successful pour, the sequence for constructing the basement was specified, achieving local resistance against buoyancy in order to gradually de-mobilise the pumping system.

Technodynamics also designed the whole scheme temporary works and methodology, aiding in the project completion three months ahead of the agreed programme.