Demolition methods

Health and safety file - this is a record of information for the client which focuses on health and safety. It alerts those who are responsible for the structure and equipment in it to the significant health and safety risks that will need to be dealt with during subsequent use, construction, maintenance, repair, cleaning and demolition. Method statement - this is a written document laying out the work procedures and sequences of operations to ensure health and safety. It results from the risk assessment carried out for the task or operation and the control measures identified. If the risk is low, a verbal statement may suffice. 

Outline the factors to consider when undertaking a pre-demolition survey of a construction site prior to drawing up a demolition method statement. 

Outline the main areas to be addressed in a demolition method statement. 

Does the demolition method to be used, such as a long-reach machine or crane and ball, enable everyone to be distanced from the demolition ... 

Asked to outline the main areas to be addressed in a demolition method statement some candidates simply listed items instead of providing an outline. 

Identify the structural condition, as deterioration may impose restrictions on the demolition method... 

Demolition works should be carried out by experienced demolition contractors. Demolition methods should follow best practice adjusted as necessary to account for potential building instability. Demolition techniques will not be discussed here, but special considerations around waste management are briefly discussed. 

New Explosive Co, Ltd. At Stowmarket, Engl, it was the first plant to manufacture compressed blocks of wet NC by Abel s method. These blocks were used as bursting charges in various projectiles as well as for demolition purposes. This facility also manufd Dynamites, Gelignite, Cordite, Carbonite, etc Ref Daniel (1902), 451... 

Initiation of a military explosive (or propellant) to deflagration, explosion or detonation can be achieved either by ignition or by detonation. Ignition method is used for producing deflagration (See Vol 3, p D38-R)(Ref 48), such as in case of propellants and some low demolition explosives, while detonation method (See in this Vol,p D137ff) is used for... 

After unscrewing the fuze from the body of the grenade, the EC Blank Fire Powder is emptied into a barrel of water and the fuze is destroyed by the "pit and chute" method, as described under "Metal Components, Destruction". The EC Blank Powder may later be spread out on the ground, allowed to dry and burned, as described under Black Powder If fuzes cannot be disassembled easily, the grenades should be destroyed with demolition blockd in the same maimer as offensive and rifle grenades... 

Use Plastic demolition charges (Ref 19, pp 55-6) Composition C-4, also called Harrisite, was developed before 1950 at Picatinny Arsenal by Otroson (Ref 10) to serve as replacement for Comp C-3 which possessed some undesirable props. A semiplant method for manufg Comp C-4 was developed in 1956 by Lerner (Ref 14). This light brown putty-like substance contains RDX 91 nonexplosive plasticizer 9%, consisting of di-(2-ethylhexyl)sebacate 5.3, polyisobutylene 2.1 motor oil 1.6 parts. 

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