Johnston Construction has expanded its Foundation Construction services to provide state of the art drilling and caisson installation equipment for shallow, mid and deep foundations.
Johnston Construction has expanded its Foundation Construction services to provide state of the art drilling and caisson installation equipment for shallow, mid and deep foundations. Through the use of down the hole (DTH) percussion hammers, Johnston Construction is capable of installing caissons from 150mm to 610mm diameter. The system drills and installs the caisson in a single pass eliminating the need to case the hole before drilling, regardless of the geological formation to be drilled. The methods that Johnston Construction utilizes also allows caissons to be drilled at a batter, though boulder laden overburden, or consolidated bedrock with remarkable speed and accuracy.
Johnston Construction can also exchange the DTH hammer for an air rotary drill or continuous flight augur. This allows the same drilling equipment to adapt to any soil condition encountered in the field as detailed subsurface information is not always available before construction begins. With a broad range of equipment available and experienced crews Johnston Construction can provide the flexibility and knowledge to find the tool for your foundation project.
Johnston Construction has been providing quotations to RTL for several bridge and pilling projects in the NWT since 2009. In 2010, Johnston Construction subcontracted to RTL for the construction of 3 bridges on NWT Hwy 5. Their scope f work included driving piles for the bridge abutments, installing pile caps, bin walls, precast concrete decking and bridge rails. Their work was carried out in a very professional manner, on schedule and to specifications. RTLS would recommend Johnston Construction for pilling and bridge work and RTL would have no hesitation using them on future projects.RTL Robinson Enterprises Ltd.
Johnston Construction was subcontracted for a girder delivery project located south of Prince Albert Saskatchewan in September 2013. The project required Johnston Construction to work with WSP Canada Inc. to develop a method of unloading and securely storing girders for a bridge over the South Saskatchewan River. The scope of this project included working with WSP on details to adequately brace and secure the girders for long term storage, direct site preparation to store the girders, develop a lifting procedure and performing the work to unload and store the girders on site. This project was very difficult, due to the size of the girders which were 3.2 m tall and varied in length from 37.4 m to 48.6 m. Adding to the difficulty of the project was the limited area on site to store the girders and setup the cranes required to perform the work. The most challenging aspect was the uncertain delivery schedule of the girders due to weather and road conditions which caused delays in the deliveries. Johnston Construction excelled at overcoming all of the challenges and worked to minimize costs to the client and delays. Given the high quality of the work performed under less than ideal conditions WSP would recommend Johnston Construction for future bridge construction work.RTL Robinson Enterprises Ltd.
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