High Rise Parking Garage
July 13, 2015
This 66 story, high-end, commercial building is home to department stores, a hotel, up-scale shops and luxury condominiums.
Virtually all shipments and deliveries of any consequence enter through a loading dock and large door on a side street. At 24’ x 16’, just covering this door opening presents a sizeable problem. Since the door is the “mouth” of this building, it has to be big enough to accommodate a variety of truck loads. Consequently, the longer this large door is left open, the greater the loss of energy. During winter months, winds gusting through the skyscraper canyons and sub-zero temperatures resulted in high energy costs. The constant wind pressures also created "drag" on the existing sectional door, causing it to operate even more slowly, increasing the energy loss.
In addition to high energy costs, management also faced extensive repair bills resulting from vehicular collisions with the sectional door. Repairs totaled $40,000 during one year, alone. These collisions had a common pattern: As the door opened, vehicles would speed toward the opening thinking the way was clear, when in fact, the door was not completely up. The result was door damage, downtime, additional energy loss and security concerns as the door remained open while being serviced.
Working with the local ASI distributor, the sectional door was replaced with Marathon’s 109LP high speed, high performance roll-up door that can accommodate larger openings.
With an operating speed four times faster than the old sectional door, the entrance is fully accessible in just seconds, making collision damage an issue of the past. Faster operation also, means uninterrupted passage and increased productivity for the several hundred trucks requiring access to the facility on a daily basis.
In addition to high speed, the 109LP has other features that make it the ideal solution.
Unlike fabric doors that could deliver the speed but not intrusion protection, 109 series high speed doors are comprised of rigid, insulated slats. Each slat has an exterior aluminum shell and interior PVC shell that provide a significant visual and physical barrier for greater security.
And, what about those winds? A fabric door would become a huge sail, slowing down considerably with a wind speed of over 25 mph. Marathon’s 109 series doors with their nylon windlocks and rigid slats are designed to perform, even in high winds. Unlike some high speed doors, insulated slats are a standard feature of 109 series. Additionally, the Marathon door is weathersealed along its entire perimeter. Building managers have noted a significant reduction in energy costs since installing the 109LP.
With the wind factor and level of activity in and out of this facility, tremendous demands are put on the door operator, but the 109LP’s high performance direct drive operator is specifically designed to take it. The nylon windlocks mean there’s no metal-to-metal contact between the door and the side guides. Coupled with the high performance operator, this door powers through the high winds with no drag and without slowing down.
Prior to installing the 109LP, any number of problems at the main doorway could throw off the schedules of businesses throughout the building. In contrast, The 109LP door is actuated by remote control from the security office. With the door seamlessly integrated into the building’s access control system, it’s one less item for building engineers and security staff to worry about.