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blast design and calculation

Designing Blast Patterns Using Empirical Formulas

the blast patterns calculated by empirical formulas to quarry blasting patterns producing satisfactory results, with geology considered in the blast designs. Design changes were recommenced for those quarries where problems were occurring and where the 'calculations suggested a change.

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Chapter 8 BLAST DESIGN National Park Service

(Figure 8-7) Analysis of efficient blast design.. Efficient blast designs combined with the proper choice of explosive can produce better fragmentation with associated lower operating costs compared to blast designs and explosives used under adverse conditions.

Calculation of Blast Loads for Application to Structural

an overall approach for design under blast external loads is still missing. Some design strategies are also recommended aiming to ensure increased robustness in building structures that are to endure localized failure. However, no guidelines are provided in EN 1991-1-7 for the calculation of external blast induced loads.

BLAST DESIGN Blast-Resistant Design Considerations

States for blast design. The initial program was conducted in two phases. The first phase, completed in 2007, performed blast tests on 30-foot span pan-els. The second phase, completed in late 2010, provided more comprehensive study, including static testing of

Blast Effect Calculation Metabunk

Feb 01, 2011· It works regardless on nature of explosion and depends only on TNT equivalent of explosive charge. All this calculations are based on energy similarity law for explosions witch stated that all blast wave parameters are function of two variables: first is explosion energy and second is distance from explosion origin.

Explosives Engineers’ Guide

Blast design terminology and formulas Hole length (L) = BH + SD Charge length (C) = L SL Blast volume (V) = B x S x BH x N Blasted tonnes (T) = 3V x Density of rock in t/m Volume of blasthole (Vb) = π x D2/4000 x L Mass of explosive per hole (kg) = Volume of hole length charged x Explosive density

RCBlast Blast Analysis Software

Blast load calculation. Blast loads can be input as a series of pressure-time data points defined by the user. The user may also specify the TNT equivalent explosive mass and stand-off distance and let RCBlast compute blast-pressure distribution automatically. Alternatively, the peak pressure and duration can be specified for use with a

Blast Loading and Blast Effects on Structures An Overview

The analysis and design of structures subjected to blast loads require a de-tailed understanding of blast phenomena and the dynamic response of various structural elements. This paper presents a comprehensive overview of the effects of explosion on structures. An explanation of the nature of explosions and the mechanism of blast waves in free

EXPLOSIVE BLAST 4 T FEMA.gov

Jul 26, 2013· EXPLOSIVE BLAST 4 EXPLOSIVE BLAST 4-1 This chapter discusses blast effects, building damage, inju-ries, levels of protection, stand-off distance, and predicting blast effects. Specific blast design concerns and mitigation measures are discussed in Chapters 2

Software refrigeration.engineering Heat Load Calculator

In this article, I would like to show you how the program works and how its calculation look like. Calculation example Design criteria: Propose of system design for room cooled to –35°C, with the optimum heat load of 200kW. Calculations are based on four session weather scenario.

Explosives Engineers’ Guide

Blast design terminology and formulas Hole length (L) = BH + SD Charge length (C) = L SL Blast volume (V) = B x S x BH x N Blasted tonnes (T) = 3V x Density of rock in t/m Volume of blasthole (Vb) = π x D2/4000 x L Mass of explosive per hole (kg) = Volume of hole length charged x Explosive density

Title: Blast Design Equivalent Static Methods Author

calculations, AT Blast, is available for downloading free of charge from the U. S. General Services Administration (oca.gsa.gov). Although the actual blast load on an exposed element will vary over its tributary area, for design the maximum dynamic load (Fo) is typically taken as the product of this area and either the maximum pr or a

BLAST DESIGN Blast-Resistant Design Considerations

States for blast design. The initial program was conducted in two phases. The first phase, completed in 2007, performed blast tests on 30-foot span pan-els. The second phase, completed in late 2010, provided more comprehensive study, including static testing of

Blast Effect Calculation Metabunk

Feb 01, 2011· It works regardless on nature of explosion and depends only on TNT equivalent of explosive charge. All this calculations are based on energy similarity law for explosions witch stated that all blast wave parameters are function of two variables: first is explosion energy and second is distance from explosion origin.

Blast Design & Analysis Software Extreme Loading for

Blast Design & Analysis. Using Extreme Loading ® for Structures (ELS) software, structural engineers can design and analyze a structure subjected to blast loads with full 3-D nonlinear dynamic analysis. The results allow users to visualize in 3D how the building or different structural components inside the building will behave under the prescribed conditions.

BLASTING TECHNICAL INFORMATION MC Finishing

For more information on blast specifications contact SSPC.org B. MECHANICAL WHEEL BLASTING Wheel blast system utilizes a high speed rotation wheel using centrifugal force to propel the media. The wheel size design and rotation speed affect the velocity and pattern of the media. BLASTING TECHNICAL INFORMATION

DESIGN AND ANALYSIS OF BLAST LOAD ON STRUCTURES

analysis and design of blast-resistant structures require a detailed understanding of explosives, blast phenomena and blast effects on buildings. Therefore, it is important to gather the available literature review on explosives, blast phenomena, blast wave interaction and the response of structures to blast loads. 2. GENERAL

RCBlast Blast Analysis Software

Blast load calculation. Blast loads can be input as a series of pressure-time data points defined by the user. The user may also specify the TNT equivalent explosive mass and stand-off distance and let RCBlast compute blast-pressure distribution automatically. Alternatively, the peak pressure and duration can be specified for use with a

H BLASTING IN SURFACE EXCAVATION

Blast Design The best use of explosives is made when a blast produces a clean break, giving good fragmentation, while avoiding excessive fly-rock. The success of achieving these goals depends significantly on good blast design. If the blastholes are drilled as a staggered pattern on an equilateral triangular grid, the optimum distribution of the

Software refrigeration.engineering Heat Load Calculator

In this article, I would like to show you how the program works and how its calculation look like. Calculation example Design criteria: Propose of system design for room cooled to –35°C, with the optimum heat load of 200kW. Calculations are based on four session weather scenario.

Blast Design Rigid Global Buildings

In order to complete a blast resistant design a coordinated effort from all design and construction disciplines is needed. While the effective design and appearance of the exterior structural system is an important and critical portion of the design process, the overall blast resistant design must also be coordinated with the architectural and

Blast Design Software Blasting Pattern Software Blast

Performs the calculation of Flyrock. Graphs. Displays ground and air vibration contours of the blast design, Fragmentation size distribution, Comparative Performance with actual blast results, in similar rocks, different benches, different explosives and parameters. Google map. Draw blast plan on google map, create tie-up line on holes and