This Specification describes the requirements for shotcrete lining in a tunnel project. Applied shortly after excavation, the shotcrete lining shall rapidly medigate any disintegration or detrimental loosing of the surrounding rock. Read the rest of this entry »
Compared to the natural energy sun or wind, the density of energy contained in flowing water is high and the technical effort necessary for its exploitation is less. Therefore the construction of hydropower plants is especially attractive when vast resources are at hand. Sika is operating worldwide scale with its own production facilities and sales organization in more than 55 countries. Read the rest of this entry »
Generally, the contractor shall allow for all necessary measures to monitor and avoid cracking in fresh hydrating concrete, regardless the size or volume of the pour. Such measures shall be to the satisfaction of the Engineer and shall be such that maximum surface crack width on hardened concrete measure immediately after the pour does not exceed 0.004 times the nominal cover of the main reinforcement. Read the rest of this entry »
The rooftop “green lung” has a beneficial effect on temperatures inside the building below. The “fifth facade” is also a pleasing “eye-catcher”, one that is distinctively different to traditional roofscapes. Flat roofs can either have extensive or intensive green systems. Read the rest of this entry »
