2012年8月27日星期一

Something About Scaffolding Regulations

General scaffolding regulations refer to those types of regulations that apply toward the use of scaffolding and are meant to serve as a guide for the safe use of the scaffolds. Most of the scaffolding regulations establish general usage principles, such as the conditions under which to use the scaffolds, the manner in which to use the scaffolds, and other safety practices. Other types of regulations deal with the proper construction of the scaffold itself, detailing the exact principles to apply toward the setting up of the scaffolds.

A consideration in scaffolding regulations is the use of the scaffolds, such as the laws establishing the maximum load that may be placed upon the various types. Usually, manufacturers of scaffolds test the product in order to determine the maximum weight that such a scaffold can bear without any type of tension. In addition to this determined maximum weight limit, many local laws also demand that scaffolds should be able to comfortably support many times more than this predetermined maximum, the total number of which is depended on the country in question. As such, it may be required to support anything from two to four times the predetermined safe maximum weight limit as a further inbuilt type of safety precaution.
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2012年8月25日星期六

Something About Steel Scaffolding

Steel scaffolding is access scaffolding that allows workers to reach high and remote locations, made from steel for strength and durability. Scaffolding provides temporary access during construction, maintenance, and repairs, and steel is one of the many materials a company can choose from when installing scaffolding. It is usually necessary to use steel when the scaffolding needs a high weight rating, will be used in harsh conditions, or must be extremely durable. Alternatives can include aluminum and wooden scaffolding supplies.

Structural scaffolding made from steel has a number of advantages. Steel is very strong and durable, with elasticity in a variety of conditions. It is not so elastic that it will bend and fail, but it's also not rigid, which could expose it to the risks of cracks and other flaws. Steel scaffolding is capable of supporting very high weights, allowing people to use it with heavy equipment and supplies. After a certain height, steel scaffolding becomes necessary because of the sheer weight of the scaffolding itself, even before anything is loaded on.
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The typical scaffolding arrangement consists of boxlike structures

Many construction and renovation projects require the use of scaffolding to allow workers to reach the upper areas of the project. The typical scaffolding arrangement consists of boxlike structures that can be stacked on top of each other until the desired height has been reached. In order to allow the workers to reach the work area more comfortably, scaffolding brackets are attached to the scaffolding. Once attached, a wooden or aluminum walking plank is placed onto the scaffolding brackets. The plank provides a working platform for the workers to operate on in close proximity to the structure.

While the most common style of scaffolding brackets consist of painted steel construction, there are also galvanized steel brackets that are designed to be used in masonry applications. The galvanized finish of the scaffolding brackets allows the dried-on concrete to be removed more easily than a painted finish, and the chemicals in the concrete and mortar will not corrode the brackets as rapidly as the painted surfaces. The strength of the brackets not only allows two or more workers to operate on a single walking plank — they provide enough strength to allow a surplus amount of cement blocks, bricks and mortar to be stocked on the plank as well.
Occasionally, concrete blocks will be hung on individual scaffolding brackets gyqdlqha, placed on the back side of the scaffolding to be used as counterweights or ballast. The ballast is commonly needed to offset the weight of the workers operating on the front side of the scaffolding. The most common type of attachment method for scaffolding brackets is to simply slide over the scaffolding tubes and lock on by fitting securely over the tubular structure, however, some brackets use a thumb screw to physically fasten to the scaffolding and prevent slipping.
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2012年8月23日星期四

The size and configuration of scaffolding platforms can vary

Another term for scaffolding platforms is scaffolding planks; these planks fit the first definition of the term: they are pieces of wood or metal laid across the ledgers and transoms — metal support bars beneath the plank — on which workers can walk or stand. Most scaffolding rental companies will rent out as many scaffolding platforms as the builder needs, though some builders choose to simply use scrap metal or wood as planks. This is not advisable, as most scaffolding platforms are designed specifically for use with certain scaffolding components, meaning the rented or bought units will be safer and more reliable than simple scraps of wood or metal.

The size and configuration of scaffolding platforms can vary according to the type of scaffolding structure being built gyqdlqkz. Some scaffolds are built with stairways, which means the platforms may be altered to accept the top and bottom of the stairways. In other cases, a ladder may be mounted so workers can climb from one level of the structure to the next; it is not uncommon for the ladder to be mounted in a hole in the platforms, meaning the worker must climb through the platform. This configuration tends to be somewhat dangerous, as workers can unexpectedly fall into the opening while working on the platform. Stairs are the safest method of getting from one level to another, though the structure will need to be quite a bit larger.
Many builders refer to the entire scaffolding structure as "scaffolding platforms," though usually only when the structure is fairly small. Scaffolding can be built to be quite large and expansive, at which time is it likely to be called a structure rather than a platform, but if the structure features only one working platform mounted to scaffolding tubes, it may be called a platform instead.
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2012年8月22日星期三

The scaffolding planks are also easy to rearrange

Occasionally, the wood planks are doubled to give more support to heavy work materials such as brick and mortar. The overhanging ends of the planks also provide a place to set materials and supplies whereas the aluminum platforms stop directly at the edge of the scaffolding. Another reason that some workers often prefer the use of the planks over that of the aluminum platform is the tendency of the platform to stick to the scaffold. The platforms will sometimes become stuck if the scaffold has twisted or shifted in the least, requiring the platforms to be pried and pounded out of position at breakdown time, whereas the planks simply lift off of the sections.

The use of scaffolding planks not only saves time, but also saves money and typically offers the same safety as the purpose-built platforms. The scaffolding planks are also easy to rearrange while erecting the scaffolding, providing better or enhanced footing while straining to raise the scaffolding sections in place. In some situations, workers will actually equip the working section of a scaffold with both an aluminum platform and scaffolding planks. The job materials are often kept on the aluminum platform since it has sides which prevent the materials from accidentally falling off of the scaffold while the workers perform jobs from the scaffolding planks.
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2012年8月21日星期二

Soft scaffolding is considered a more basic technique

Vygotsky's scaffolding ideas were so monumental at the time of their inception because the idea of directly interacting with students to teach was not necessarily a common practice. Lectures were considered the norm, and students who could not follow those lectures were left without any other instructional support. Vygotsky's ZPD dictated that a more learned person could guide a less learned person through a task by demonstrating, dictating, and monitoring rather than simply delivering information. This concept was not initially applied to education settings, but as other psychologists and professionals learned of the concept, they developed the idea further and brought it to the forefront of educational techniques.

Different types of scaffolding can be done in a classroom. Sometimes they are broken down into two categories gyqdlqbx: soft scaffolding and hard. Soft scaffolding is considered a more basic technique in which a person will directly converse with another person learning a task and critique his or her approach to problem-solving. Hard scaffolding refers to a less direct method in which the teacher will not directly instruct, but instead give clues that will allow the student to reach conclusions on his or her own. This essentially promotes a higher level of thinking.
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2012年8月20日星期一

The term scaffolding comes from the works of Wood

The term scaffolding comes from the works of Wood, Bruner and Ross (1976). The term ‘scaffolding’ was developed as a metaphor to describe the type of assistance offered by a teacher or peer to support learning. In the process of scaffolding, the teacher helps the student master a task or concept that the student is initially unable to grasp independently. The teacher offers assistance with only those skills that are beyond the student’s capability. Of great importance is allowing the student to complete as much of the task as possible, unassisted. The teacher only attempts to help the student with tasks that are just beyond his current capability. Student errors are expected, but, with teacher feedback and prompting, the student is able to achieve the task or goal. When the student takes responsibility for or masters the task, the teacher begins the process of “fading”, or the gradual removal of the scaffolding, which allows the student to work independently. “Scaffolding is actually a bridge used to build upon what students already know to arrive at something they do not know. If scaffolding is properly administered, it will act as an enabler, not as a disabler” (Benson, 1997).

Many different facilitative tools can be utilized in scaffolding student learning. Among them are: breaking the task into smaller more, manageable parts; using ‘think alouds’, or verbalizing thinking processes when completing a task; cooperative learning, which promotes teamwork and dialogue among peers; concrete prompts, questioning; coaching; cue cards or modeling. Others might include the activation of background knowledge, giving tips, strategies, cues and procedures. Teachers have to be mindful of keeping the learner in pursuit of the task while minimizing the learner’s stress level. Skills or tasks too far out of reach can lead a student to his frustration level, and tasks that are too simple can cause much the same effect.
Each facilitative method used is chosen as an individually tailored instructional tool. Teachers have to have open dialogue with the students to determine what and how they are thinking in order to clear up misconceptions and to individualize instruction. Crucial to successful scaffolding is an understanding of the student’s prior knowledge and abilities. The teacher must ascertain what the student already knows so that it can be “hooked”, or connected to the new knowledge and made relevant to the learner’s life, thus increasing the motivation to learn.
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2012年8月14日星期二

Scaffolding Safety is of Great Importance

scaffolding is integral part of construction processes. When working at height, you need something to access that place. You will naturally think of ladders. But instead of ladders, scaffolding is a better option when you have to work up high. Scaffolding provides you a safe and firm platform to work and keep your tools. With scaffolding, you can do your work efficiently, easily and half the time. You save time and energy with the use of scaffolding which you may have spent climbing up and down the ladder many times to adjust it. Also the guard rails at the scaffolding let you concentrate on your work without the fear of falling down. While doing home-repair jobs at certain height, you should rent scaffolding.

Though setting of scaffolding should be done by the professionals, but if you really want to do it yourself, you must follow the basic rules. You must hire a registered company for your scaffolding work. The company should have competent, experienced and trained workforce. While working on the scaffolding, there are certain basic checks you have to make to lessen the risk.
Foundation where scaffolding is set should be firm, not soft. For instance, if you set it on the frozen ground, it might melt and scaffolding frame might sink into the ground. Make sure that scaffold is supported on the adjustable stands and level is perfect. In case of a rolling scaffold, castors should be locked. While erecting scaffolding, it should be strong enough to hold the four times the intended load.
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