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Published in Les Goring, Residential Surveying Matters and Building Terminology, 2023
Three types of locking arrangement are usually available: 1)Lever/Lever lock, which is always locked via the key, to avoid locking yourself out; 2)Split spindle lock, whereby you can open the door and exit by using the lever handles, but you will need a key to re-enter the house; and 3)Slam lock, for fast exit. When you close (or slam) the door upon leaving, there is no need to lift the handle or use a key to lock up – but you will need a key to regain entry and to lock up from the inside of the house.
Specific Maintenance Procedures and Requirements
Published in Ryan Cruzan, Manager’s Guide to Preventive Building Maintenance, 2020
For conventional locks, the only maintenance that is necessary is to make sure that the locks screws have not become loose which requires occasionally tightening the screws and to occasionally lubricate the keyway. Lock keyways should only be lubricated with dry graphite lubricant. Any oil in the delicate mechanism of the keyway would attract dirt and could jam the lock cylinder mechanism.
Water Use and Availability
Published in Frank R. Spellman, The Science of Water, 2020
A lock is an area on a waterway, or connecting two waterways, that has the ability to raise or lower boats to allow passage between bodies of water at different levels. Dams allow for a degree of control over river flows so that depth can be increased during periods that would otherwise experience low flows. Both are vitally important to navigation in rivers and canals that connect major shipping routes and link the Great Lakes to each other and to rivers that travel further inland. Critical lock sites are among the areas with failing infrastructure.
Development of intervention programs for inland waterway networks using genetic algorithms
Published in Structure and Infrastructure Engineering, 2018
Clemens Kielhauser, Claudio Martani, Bryan T. Adey
Ports are the objects on waterway networks where trips originate and end. Trips are measured in transport units TU, with a more detailed explanation in Section 3.4. Ports deteriorate, and as such have condition state descriptors, as defined in the next paragraph. Locks are objects on waterway networks that are used to overcome differences in altitude within a short horizontal distance. These differences may be man-made (power plants) or stem from natural elevation differences along a channel or river. Locks are a bottleneck in waterway networks, as they take time to operate and to pass through. Due to their bottleneck properties, most locks are built in a redundant way, i.e. with at least two lock chambers. Locks also deteriorate over time, and as such have the same condition state descriptors as ports. Measurement devices are objects that are not directly located on the waterway network, but beside it. Still, these objects play an important role for the traffic and safety of the network by supplying real-time information (e.g. radar, water depth, weather) to the network users in order to facilitate safe travel. These measurement devices are also prone to deterioration and thus have the same condition state descriptors as ports.
Identification of waterways maintenance significant units using secondary data and Multi-Attribute Utility Theory
Published in Structure and Infrastructure Engineering, 2022
Francesca Marsili, Jörg Bödefeld
Among the aging infrastructures of the German waterways system, locks raise special concern. Most of them were built around 80-100 years ago, showing nowadays evident signs of advanced degradation; also, some recent locks built in the 60s’-70s’ are in a dreadful state due to planning and construction defects and poor material quality. A lock is a short section of a navigable river or canal provided with gates and sluices at each end which can be opened or closed to change the water level, used for raising and lowering vessels. The system of locks can be decomposed in different levels (Table 3).