Compaction applications are a required part of numerous industries, and no construction site is complete without a soil and asphalt compactor. To meet this demand, Bobcat has launched the company‘s new Light Compaction Product Line, in collaboration with the Ammann Group, a brand known for its comfort and productivity. This
Aberdeen Standard Investments’ AIPUT fund (Airport Industrial Property Unit Trust) has today announced the start of construction on Phase II of dnata City East, a 117,000 sq ft extension of its landmark air cargo facility located immediately to the south of Heathrow Airport. The new building delivers a significant vote
Hiab, part of Cargotec, will supply MV Commercial in the UK with 100 light, medium and heavy range HIAB loader cranes equipped with HiConnect™. The deal is worth over EUR 5.7 million including installation for 60 cranes and has been booked in the 1st quarter of 2021. MV Commercial provides
As more construction firms pledge to be net-zero by 2050, Richard Robertson, business development director at Cadline, provider of MTWO Complete Construction Cloud, is calling on businesses to utilise technology to create more sustainable workforces. “It is now an expectation, not just an attractive gesture, for design briefs to incorporate
John Maddams has been appointed as Senior Land & Partnerships Manager by Keepmoat to bolster its South Midlands region. John is bringing with him 16 years’ experience in the property industry, having previously headed a FTSE 250 residential developer where he contracted upon £300m (GDV) of new land opportunities. His
A residential application of a wall retaining may require the help of an engineer and local councils to regulate the process. Retaining walls engineering Texas involves the process of employing innovative ways to solve a structural problem. Having a structural engineer from the initiation of the project can help make
As an electric arc lamp, a helical xenon flash tube can produce extremely full-spectrum, incoherent, and intense white light for short times. Designers used electrodes on both ends with glass tubing to make the flash tube. When a user triggers it, it produces the light by ionizing and conducting a
BDC 319 : Aug 2024
Compaction applications are a required part of numerous industries, and no construction site is complete without a soil and asphalt compactor. To meet this demand, Bobcat has launched the company‘s new Light Compaction Product Line, in collaboration with the Ammann Group, a brand known for its comfort and productivity. This latest expansion of the Bobcat product range under the company’s Next is Now banner is designed to meet work requirements on almost any compaction job site. Machine specifications include state of the art technologies that allow maximum performance, while not compromising on comfort, safety and simplicity of use. Altogether, the Bobcat light compaction range comprises seven different product families and will ultimately offer 37 models, from vibratory rammers weighing 29 kg up to 2.6 tonne tandem rollers. Mike Vought, Senior Director for Product Management at Doosan Bobcat EMEA, said: “The launch of the complete compaction line-up is part of the exciting diversification strategy under our innovative Next is Now umbrella. Along with product innovations this is another driver on the way to achieving our vision – becoming the world leader in the compact equipment market. To accomplish our goals, even in the extremely difficult year of 2020, we introduced an unprecedented number of new products and technologies and we will continue this in 2021. “Compaction is one of the completely new product categories together with wheel loaders, that Bobcat introduced in 2020. This expansion was complemented by significant developments in the market-leading mini-excavator, rotary and rigid frame telehandler, skid-steer and compact track loader and backhoe loader ranges from Bobcat.” The Bobcat Light Compaction Range includes: • Vibratory rammers • Vibratory forward plates • Reversible vibratory plates • Hydrostatic plates • Walk behind rollers • Trench rollers • Tandem rollers Light compaction machines can be used in a wide range of applications, such as: Construction – Light compactors increase soil strength, improve stability and load bearing capacity by removing voids and interlocking soil particles. Roadwork – Compacting asphalt and base materials improves their capacity to withstand heavy traffic and improves their general durability. Landscaping – Rammers and forward plates are used for gardening and other landscaping applications, as their compact size and low weight ensures they are easy to move between job sites. Vibratory Rammers The Bobcat line-up of vibratory rammers consists of six models – the R30, R60, R68, R60P, R68P and R70D from 29 to 89 kg and is intended for small compaction works for trenches, drainage and pipelines. Due to their ease of transport they are often used for road maintenance as well. They are suitable for compacting mixed soils, sand, gravel materials, loam and clay. All Bobcat vibratory rammers come with a reduced vibration handle and a state-of-the-art CAD calculated weight distribution, ensuring maximum safety and operator comfort. The R60 and the models above also include an integrated height adjustment system. Vibratory Forward Plates There are also six different vibratory forward plates, which are suitable for compacting sand, gravel, lean concrete, bitumen coated gravel and paving stones. Again, their compact size makes them easy to transport between job sites, and ideal for compaction in tight spaces (trenches, pipelines and sidewalks) and even landscaping. The FP10.33, FP12.40, FP15.40, FP15.50, FP20.50 and FP20.50D models are the smallest products in the Bobcat vibratory plate offering, ranging from 54 to 115 kg. The smart engineering design of the handles protects the operator from unwanted vibration, while the machine frame enables a secure grip and easy machine control. Reversible Vibratory Plates Bobcat reversible vibratory plates are suitable for jobs mainly in civil engineering and road construction. They can easily compact all ground materials, such as sand, gravel, crushed stone, concrete and sett paving. With machine weights from 109 to 490 kg, there are 12 models in the range – the RP22.40, RP22.40D, RP25.40D, RP25.50D, RP30.50, RP30.50D, RP30.60, RP30.60D, RP40.60, RP40.60D, RP49.20D and RP59.20D. All Bobcat reversible plates operate with a twin-shaft system, enabling change of direction during compaction. The twin-shaft technology also results in dual weight and a better compaction force. Hydrostatic steering controls guarantee ease of operation and a quick change in compaction direction. Hydrostatic Plates Complementing the rest of the compaction plate range, there are four hydrostatic plates – the HP50.75, HP55.75, HP60.85 and HP65.85 models – weighing between 450 and 582 kg. Hydrostatic plates are designed for heavier compaction work in civil engineering and road construction. They can compact all ground materials – such as sand, gravel, crushed stone, asphalt and sett paving – with ease. The Bobcat hydrostatic plate line-up relies on a fully hydraulic system that does not require a V-belt. They operate with a dual (HP50.75 and HP60.85) or unique triple shaft (HP55.75 and HP65.85) excitation system for maximum compaction output and unbeatable climbing ability. Walk Behind Rollers Walk behind rollers are versatile machines, suitable for compacting bituminous material but also for light earthwork and other compaction tasks. Bobcat offers the WR65 model in two versions offering a choice between Hatz or Yanmar engines, both equipped with dual drums for maximum compaction. They are fully hydraulic machines, with an integrated water sprinkler system as standard. The Bobcat walk behind rollers are also equipped with dual amplitude settings, enabling a change between soil/gravel and asphalt/bituminous compaction in just seconds. Trench Rollers Trench rollers are mainly designed for trench compaction as their name suggests. Bobcat is offering the 1340 kg TR75 (articulated) and 1305 kg TR85S (skid-steered) models. They also cover a wide range of other applications such as pipeline construction, electric and other cable installations, whilst commercial or industrial developments and even dumpsite and landfill jobsites can take great advantage of these machines. They can be used for soil, sand or gravel compaction and can even tackle hard to compact materials such as clay. Tandem Rollers Tandem rollers are used for larger surfaces of sub-base, asphalt or other ground materials. They are mostly present in small to medium commercial development sites and road construction sites. Bobcat is looking to offer a range of five articulated ride-on
Aberdeen Standard Investments’ AIPUT fund (Airport Industrial Property Unit Trust) has today announced the start of construction on Phase II of dnata City East, a 117,000 sq ft extension of its landmark air cargo facility located immediately to the south of Heathrow Airport. The new building delivers a significant vote of confidence in Heathrow’s continuing success as a leading global airfreight hub. Full planning permission for the new 117,000 sq ft warehouse building was granted by the London Borough of Hounslow in August 2020, following an earlier vote in favour of the project by its Planning Committee. The building will be operated by dnata, the largest independent cargo-handler serving Heathrow, together with the nearby 250,000 sq ft dnata City East Phase I warehouse, also built by AIPUT and pre-let to dnata. Due for completion by early October 2021, the new building – specifically designed to meet the operations requirements of dnata – will strengthen dnata City East’s status as the largest off-airport cargo handling operation at the UK’s primary commercial aviation hub. Specialist industrial and logistics contractor, McLaren Group, has been appointed as lead contractor for the build programme, reporting to project manager, Avison Young. The project will be delivered in line with AIPUT’s Carbon Strategy, which commits the fund to achieve carbon neutrality by 2025. The latest carbon reduction techniques will be incorporated into the building’s construction and operations in order to future-proof both the operational and commercial value of the wider dnata City East location. Recycled and low-carbon materials will be used where possible, together with the installation of solar PV panels, air-source heat pumps and electric vehicle charging points. The new building will target a rare BREEAM ‘Excellent’ environmental rating. Edward Amery, Head of UK Industrial & Logistics for Aberdeen Standard Investments, commented: “AIPUT’s new, landmark warehouse at dnata City East will reinforce our long-term vision to drive the continued growth of our portfolio of prime air cargo assets at Heathrow. The completed dnata City East site will set a new benchmark for airport industrial property investment, with AIPUT’s partnership with dnata creating a new, off-airport centre of excellence for UK airfreight.” Alex Doisneau, Managing Director, dnata (UK) Limited, commented: “We are delighted to be working with AIPUT in completing the dnata City East complex with the Phase II build, this highlights our growing commitment to the UK’s premier gateway airport in creating world-leading cargo infrastructure to support and enhance our customer and operational needs at this critical time.” ChappellKing is instructed as AIPUT’s strategic development consultants for dnata City East.
Hiab, part of Cargotec, will supply MV Commercial in the UK with 100 light, medium and heavy range HIAB loader cranes equipped with HiConnect™. The deal is worth over EUR 5.7 million including installation for 60 cranes and has been booked in the 1st quarter of 2021. MV Commercial provides sales and leasing for commercial vehicles, and has become one of the biggest national suppliers of specialist loader cranes. Founded in 2001, last year the business was named the UK Independent Dealer of the Year 2020. Steven Cairns Managing Director for MV Commercial: “This deal is testament to the excellent working relationship we have with the team at Hiab. MV Commercial has one of the UK’s best fleets of ready to go specialist crane units with annual specialist truck supply in the hundreds of units, so it is vital for our business model that we maintain a good level of high-quality equipment ready to meet our customers’ needs. This deal will grow our industry leading position and expand our fleet with high-quality equipment ready to meet our customers’ needs. “Partnering with Hiab allows us to offer our customers top end premium equipment that we can all rely on, and the service support packages give our customers extra peace of mind wherever they are in the UK.” Ian Mitchell, Director, Sales & Services, UK & Ireland: “Working closely with MV Commercial to develop a strategic partnership has been instrumental in our UK-wide growth plans. I expect there will be greater interest in the rental sector for truck mounted cranes as businesses recover from the impact of COVID-19 and Brexit, so we’re proud to be partnering with one the UK’s leading leasing companies to give businesses greater choice.” Currently 60% of the cranes are contracted to be installed at Hiab’s own installation sites in the UK. MV Commercial and its customers can receive after-sales service from Hiab’s extensive service network in the UK and Ireland throughout the entire equipment lifecycle. “This is a significant deal for Hiab, which will generate an ongoing pipeline of work for us from parts, service and repairs for up to ten years,” adds Ian Mitchell. HiConnect™ enhances the productivity of Hiab customer’s businesses through connected Hiab equipment. The technology provides real-time insights into equipment utilisation, operation and condition. This data can be used to actively optimise performance, safety and avoid unnecessary downtime. Web-based dashboards with clear and simple overviews provide status monitoring, service planning and help improve the operation of each unit and operator.
As more construction firms pledge to be net-zero by 2050, Richard Robertson, business development director at Cadline, provider of MTWO Complete Construction Cloud, is calling on businesses to utilise technology to create more sustainable workforces. “It is now an expectation, not just an attractive gesture, for design briefs to incorporate some form of green commitment. Aiming to abolish carbon emissions may seem an ambitious target, but this is mainly down to not having the skills and technology available. Technology is at the forefront of driving change as it directly enables organisations to simulate and predict project costs, times and emissions – ultimately creating more sustainable workforces,” he said. Richard states that more businesses should use technology to eliminate waste, reduce costs, invest in more sustainable materials and streamline workflow. Use data to eliminate waste: Poor project planning can lead to over-estimations of materials required, which are then wasted. This is both costly to businesses and detrimental to the environment, if they’re unable to be reused elsewhere. Although construction makes up 13% of our global GDP it also accounts for 40% of emissions worldwide. By streamlining communications and processes among all stakeholders involved, teams can collaborate better to be more efficient and eliminate waste, ultimately reducing their carbon emissions. Reduce costs to invest in sustainable materials: Despite being a main component of construction, concrete is in fact one of the least sustainable materials, so it is vital it isn’t used unnecessarily in projects. Through careful, digital planning of projects, it is easier to make quick adjustments to designs and internal systems. This can minimise the use of resources and utilise spending, so businesses can access and invest in sustainable materials to make buildings more environmentally friendly. Studies have found that ‘green’ buildings can be instrumental in minimising pollution and its impact on our health. Virtual visits: Sustainability isn’t just limited to the construction of buildings and extends to individual employees’ carbon footprint. By working collaboratively and more holistically, we can deliver huge changes. Technology allows us to view project sites virtually and remotely and progress can now be uploaded and viewed in real-time, saving the time and cost of sending an inspector to visit a site. If all construction firms adopted this method, it would significantly reduce the amount of travel undertaken. Similarly, employees’ time is freed up and can be allocated to other tasks, streamlining workflow and saving cost on potential additional hires needed. At least a third of our population is still sceptical about climate change, but the worst action our industry could take is nothing.
John Maddams has been appointed as Senior Land & Partnerships Manager by Keepmoat to bolster its South Midlands region. John is bringing with him 16 years’ experience in the property industry, having previously headed a FTSE 250 residential developer where he contracted upon £300m (GDV) of new land opportunities. His primary focus at Keepmoat Homes will be to bring forward new land opportunities and forge strategies to create the best possible scenario for the available sites across the South Midlands region. “We’re delighted to welcome John to our team. John’s proven track record of success and proactive approach to land acquisitions will stand him in good stead to enhance the region to secure more development opportunities and establish new beginnings and partnerships that benefits all parties, to create flourishing communities in the South Midlands,” said Mick O’Farrell, Regional Managing Director at Keepmoat Homes. “As a homebuilder, we are always looking for ways to strengthen our presence in the area and with John’s experience and knowledge, we’re confident he will be an asset to the team and contribute to the regions ambitious growth plans.” The appointment comes after the relocation of the regional office from their current premises in Luton to Northampton. The move marks another positive step for the developer’s ambitious growth plans in the South Midlands which will complete in Spring 2021. “I am absolutely delighted to be joining Keepmoat Homes during this important period of growth. I can already see we have an excellent team in place, and I am looking forward enhance the region and bring forward a number of key opportunities across our area of operation,” added John Maddams, Senior Land & Partnerships Manager at Keepmoat Homes.
A residential application of a wall retaining may require the help of an engineer and local councils to regulate the process. Retaining walls engineering Texas involves the process of employing innovative ways to solve a structural problem. Having a structural engineer from the initiation of the project can help make changes in the preliminary design. Retaining walls are required in places where there is a need for extra support to hold a sloping soil patch. The best retaining wall designs can withstand gravity and lateral force from a sloppy place. Below are the most common retaining wall designs, and it’s important to note that retaining wall costs in Australia can vary depending on the design, materials, and labor involved. If you’re planning to build a retaining wall in Australia, you may want to consult with a local contractor or use a cost estimator tool to get a better idea of the potential expenses involved. Gravity retaining wall This type of wall can withstand soil pressures because of its weight and geometry hence ensuring the stability of a building. Materials used in their construction include natural stone or rock, limestone blocks, and gabions. They improve stability and are best when used for low height walls. Taller walls are quite expensive. Cantilever Retaining Wall This type of wall is made of a concrete and base concrete slab. They are mostly used in places where there may be large changes in grade elevation. They resist soil pressure due to the weight of the backfill material used to construct them. It has two parts i.e. the stem and the base slab. It is mainly constructed on mining sites and is more cost-effective than gravity walls. Anchored Retaining wall Anchored retaining wall resists soil pressure by using tension supports such as drilled cables or rods. They are mostly used when the workspace is not big enough. Before selecting a retaining wall design, the following should be put into consideration Conclusion Structural engineers are always engaged in inspection and repair of damaged retaining walls or to design the retaining walls to be constructed. This type of wall fails mostly due to poor construction or poor design hence the need for professional engineers during their set up. Retaining wall designing required to be done by an expert trained and registered engineer. The process of selecting the best and suitable retaining wall design must put into consideration the soil parameters and a workable geometry. The building designer also tests the wall’s performance and resistance to sliding and chooses the best materials to use for support eg steel.
As an electric arc lamp, a helical xenon flash tube can produce extremely full-spectrum, incoherent, and intense white light for short times. Designers used electrodes on both ends with glass tubing to make the flash tube. When a user triggers it, it produces the light by ionizing and conducting a high voltage pulse. While the photographic platform gets the most use of the helical xenon flash tube, others who employ it are entertainment, industrial, medical, and scientific industries. Construction Bursting with a noble gas, there is a hermetically sealed glass tube in the lamp. This noble gas is typically xenon. Also essential to transmitting electrical current to the gas are the electrodes, and vital to boosting the gas for any trigger occasion is a high voltage power source. Operators also use a charged capacitor for the supply of energy to the flash. With that, when they trigger the lamp, they can have speedy delivery of high electrical current. Glass Envelopes The glass envelopes are made of Pyrex, borosilicate, or fused quartz and typically thin. These can be bent or straight into several different shapes, such as circular, U shape, and helical. Whether because of plastic degradation, laser rod damage, ozone production, or other detrimental impacts, some applications may not need the ultraviolet light emission. As such, users can use doped fused silica in these cases. With that, they can get different cutoff wavelengths on the ultraviolet side when doping with titanium dioxide. However, solarization may impact the material. This case is because they typically use it in non-laser lamps, sun-ray lamps, and medical lamps. Cerium-doped quartz tends to be a better alternative. Since the fluorescence reradiated part of the absorbed ultraviolet as visible, it has higher efficiency and does not suffer from solarization. Users can get their cutoff at around 380 nm. Conversely, they use synthetic quartz as the envelope when calling for ultraviolet. Though its cutoff is at 160 nm and susceptible to solarization, its materials are the most expensive. The rate of the lamp’s power level is in area/watts, and the lamp’s inner wall surface divides the total electrical input power. Essentially, it is quite crucial to cool the lamp envelope and electrodes at high power levels. Lower average power levels can cause enough of the air cooling. Operators use a liquid to cool high power lamps with a tube they use to encase the lamp by flowing demineralized water. The glass will shrink around the electrodes due to water-cooled lamps to provide a direct thermal conductor between the cooling water and the electrodes. There must also be a cooling medium flow across the whole length of the electrodes and lamp. There must also be water flowing across the exposed electrode ends and the continuous-wave arc and high average power lamps. As such, operators can use deionized water to prevent a short circuit. There is a need for above 15 W/cm2 forced air cooling. They can use liquid cooling when in a compact space, and when it is above 30 W/cm2, liquid cooling is required. Because the thinner walls have lower mechanical strain across the material thickness, they can survive loads with higher average-power. Between the cooling water and hot plasma, a temperature gradient caused the mechanical strain. Thus, operators use thinner glass when designing continuous-wave arc lamps. The belief is that with thicker material, it will be possible to handle the shock wave energy impact that can be generated by a short-pulsed arc. As such, they typically use quartz that is about 1 mm thick for flash tube construction. The output power has another limit from the envelope material. The limit for 200 W/cm2 is 1 mm thick fused quartz. However, there may be about 240 W/cm2 for synthetic quartz with similar thickness. Borosilicate and some other glasses don’t have the same power loading capacity as quartz. And because of the increased glass energy absorption resulting from sputtered deposits and solarization, there is a need for some derating for aging lamps. Seals and Electrodes People can use different techniques to seal each tube end as the electrodes protrude into them. They can bond ribbon seals with its thin molybdenum foil strips directly to the glass, and with that, they can have a durable project. However, they will have a limited amount of current passing through. If they are looking for a robust mechanical seal, they can use solder seals for the glass. However, this sealing can only be useful with the low-temperature operation. Rod seal is the most common with laser pumping applications. With this, the designer wet the electrode rod using a different glass type. They will then bind it to a quartz tube directly. They can have a durable seal capable of outweighing high currents and temperature. The glass and the seal need to have a similar expansion coefficient. Users can have low electrode wear with tungsten electrodes. It has the highest melting point for metals and can handle the electrons’ thermionic emission. The byproduct of porous tungsten are cathodes with a barium compound fill. People can get low work functions with it. Therefore, they must tailor the cathode structure for the application. Anodes are made from pure tungsten. They are also made when there is a requirement for good machinability. People machine them to offer additional surface space to handle the power loading. There is mostly a sharp-tipped cathode with DC arc lamps to control temperature and keep the arc away from the glass. And to decrease sputter peak currents may cause and reduce the hot spot event, there is a flattened radius cathode with flash tubes. What also influences electrode design is the average power. Operators must take note to achieve enough electrode cooling when at high levels of average power. The lamp’s life expectancy may significantly reduce through cathode overheating, even when there is lower importance for anode temperature. Regarding the fill pressure and gases, people may have a range of a few kilopascals to hundreds of kilopascals of gas fill
