This document discusses blast resistant structures and provides guidelines for designing structures to withstand explosive attacks. It outlines threats from vehicle bombs and hand-delivered explosives. Key design aspects covered include site layout and distance from potential explosions, structural forms that are less vulnerable, and reinforced concrete structural elements. Interior walls, glazing, and doors are addressed. Transportation infrastructure vulnerabilities to attacks are also noted. Special fabrics like Dura steel Zetix can be used in blast resistant designs.
Architectural And Structural Design Of Blast Resistant Buildings - REPORTPaul Jomy
The objective of this study is to shed light on blast resistant building theories, the enhancement of building security against the effect of explosives in both architectural and structural design process and the design techniques that should be carried out. Firstly, explosives and explosion type have been explained briefly. In addition, the general aspects of explosion process have been presented to clarify the effect of explosives on buildings. To have a better understanding of explosives and characteristics of explosions will enable us to make blast resistant building design much more efficiently. Essential techniques for increasing the capacity of a building to provide protection against explosive effects is discussed both with an architectural and structural approach.
Architectural And Structural Design Of Blast Resistant Buildings - PRESENTATIONPaul Jomy
The objective of this study is to shed light on blast resistant building theories, the enhancement of building security against the effect of explosives in both architectural and structural design process and the design techniques that should be carried out. Firstly, explosives and explosion type have been explained briefly. In addition, the general aspects of explosion process have been presented to clarify the effect of explosives on buildings. To have a better understanding of explosives and characteristics of explosions will enable us to make blast resistant building design much more efficiently. Essential techniques for increasing the capacity of a building to provide protection against explosive effects is discussed both with an architectural and structural approach.
Seminar on Bomb Blast Resistant Structure by Shantanu PatilShantanu Patil
The design of civilian or commercial buildings to withstand the effects of a terrorist blast is unlike the design of military installations or the design of embassy buildings. The objectives of the “Structural Engineering Guidelines” for the Design of New Embassy Buildings are to prevent heavy damage to components and structural collapse. Adherence to the provisions of the guidelines will minimize injuries and loss of life and facilitate the evacuation and rescue of survivors. The blast-protection objective of any commercial or public building must be similar to those of embassy structures, that is to prevent structural collapse, to save lives, and to evacuate victims.
Architectural And Structural Design Of Blast Resistant Buildings - REPORTPaul Jomy
The objective of this study is to shed light on blast resistant building theories, the enhancement of building security against the effect of explosives in both architectural and structural design process and the design techniques that should be carried out. Firstly, explosives and explosion type have been explained briefly. In addition, the general aspects of explosion process have been presented to clarify the effect of explosives on buildings. To have a better understanding of explosives and characteristics of explosions will enable us to make blast resistant building design much more efficiently. Essential techniques for increasing the capacity of a building to provide protection against explosive effects is discussed both with an architectural and structural approach.
Architectural And Structural Design Of Blast Resistant Buildings - PRESENTATIONPaul Jomy
The objective of this study is to shed light on blast resistant building theories, the enhancement of building security against the effect of explosives in both architectural and structural design process and the design techniques that should be carried out. Firstly, explosives and explosion type have been explained briefly. In addition, the general aspects of explosion process have been presented to clarify the effect of explosives on buildings. To have a better understanding of explosives and characteristics of explosions will enable us to make blast resistant building design much more efficiently. Essential techniques for increasing the capacity of a building to provide protection against explosive effects is discussed both with an architectural and structural approach.
Seminar on Bomb Blast Resistant Structure by Shantanu PatilShantanu Patil
The design of civilian or commercial buildings to withstand the effects of a terrorist blast is unlike the design of military installations or the design of embassy buildings. The objectives of the “Structural Engineering Guidelines” for the Design of New Embassy Buildings are to prevent heavy damage to components and structural collapse. Adherence to the provisions of the guidelines will minimize injuries and loss of life and facilitate the evacuation and rescue of survivors. The blast-protection objective of any commercial or public building must be similar to those of embassy structures, that is to prevent structural collapse, to save lives, and to evacuate victims.
As we know that in today’s world terrorists’ attacks are common and not a single country is completely safe. High-explosive detonations propagate blast energy in all directions, causing extensive damage to both the target structure and nearby buildings. Structural damage and the glass exposure have been major contributors to death and injury for the targeted buildings. If the structures are properly designed for these abnormal loads damage can be controlled. Within the Indian Standard Codes these types of situations are not dealt with and they need further explanation as the engineers have no guidelines on how to design or evaluate structures for the blast phenomenon for which a detailed understanding of structural behavior as well as effects of different kinds of blast load is required. The calculation of blast load is studied in this report using various parameters.
Architectural And Structural Design Of Blast Resistant BuildingsPaul Jomy
The objective of this study is to shed light on blast resistant building theories, the enhancement of building security against the effect of explosives in both architectural and structural design process and the design techniques that should be carried out. Firstly, explosives and explosion type have been explained briefly. In addition, the general aspects of explosion process have been presented to clarify the effect of explosives on buildings. To have a better understanding of explosives and characteristics of explosions will enable us to make blast resistant building design much more efficiently. Essential techniques for increasing the capacity of a building to provide protection against explosive effects is discussed both with an architectural and structural approach.
Modelling Building Frame with STAAD.Pro & ETABS - Rahul LeslieRahul Leslie
A basic tutorial to learn the concepts of modelling RC building in an Analysis/Design package -- STAAD.Pro & ETABS are in focus here, but concepts are applicable for any package. Good for novice in structural designing, and also B.Tech / BE / BSc (Engg) / BS students wising to do 'design of multi-storied RC building' as their final year project.
Structural systems in high rise building and analysis methodsDP NITHIN
This presentation is about the structural systems in tall buildings and also consists of overview of methods of analysis in tall buildings like linear and non linear seismic analysis.
As we know that in today’s world terrorists’ attacks are common and not a single country is completely safe. High-explosive detonations propagate blast energy in all directions, causing extensive damage to both the target structure and nearby buildings. Structural damage and the glass exposure have been major contributors to death and injury for the targeted buildings. If the structures are properly designed for these abnormal loads damage can be controlled. Within the Indian Standard Codes these types of situations are not dealt with and they need further explanation as the engineers have no guidelines on how to design or evaluate structures for the blast phenomenon for which a detailed understanding of structural behavior as well as effects of different kinds of blast load is required. The calculation of blast load is studied in this report using various parameters.
Architectural And Structural Design Of Blast Resistant BuildingsPaul Jomy
The objective of this study is to shed light on blast resistant building theories, the enhancement of building security against the effect of explosives in both architectural and structural design process and the design techniques that should be carried out. Firstly, explosives and explosion type have been explained briefly. In addition, the general aspects of explosion process have been presented to clarify the effect of explosives on buildings. To have a better understanding of explosives and characteristics of explosions will enable us to make blast resistant building design much more efficiently. Essential techniques for increasing the capacity of a building to provide protection against explosive effects is discussed both with an architectural and structural approach.
Modelling Building Frame with STAAD.Pro & ETABS - Rahul LeslieRahul Leslie
A basic tutorial to learn the concepts of modelling RC building in an Analysis/Design package -- STAAD.Pro & ETABS are in focus here, but concepts are applicable for any package. Good for novice in structural designing, and also B.Tech / BE / BSc (Engg) / BS students wising to do 'design of multi-storied RC building' as their final year project.
Structural systems in high rise building and analysis methodsDP NITHIN
This presentation is about the structural systems in tall buildings and also consists of overview of methods of analysis in tall buildings like linear and non linear seismic analysis.
for the subject offered in GTU, BCT, ace, cm
module 4 demolition of the structure
for the 3rd sem & also for the 6th sem subject and for the master of construction management
We know every structure is designed for a life period.
The existence of the structure after the service life period is very dangerous to its occupants and surrounding buildings .
The building act usually contains provisions that enable local authorities to control demolition works for the protection of public safety and to ensure adjoining premises and the site are made good on completion of the demolition.
it is important that construction is planned well with the help of certified architects and engineers after due diligence from concerned authorities to ensure that the resultant workplace or residence is safe to operate from or reside in.
Seismic Response of Structure with Single Coreijtsrd
Shear walls and outriggers have been used so far to resist the seismic waves of earthquake and heavy winds actions. The complete failure of the structures that has occurred in the past due to catastrophic earthquake may be avoided with the use of shear wall in the structure. The study is concerned with the use of shear wall as a single core in structure that will resist the seismic waves of earthquake. In the present study analysis of RCC building has been carried out by changing the locations of shear walls in the building. The seismic analysis performed is linear dynamic response spectrum analysis using the well known analysis and design software ETABS 16.2.0. Seismic performance of the building has been investigated based on parameters such as strorey drift, base shear and storey displacement. Belsare Sumit Bandopanth | Dilip Budhlani "Seismic Response of Structure with Single Core" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-3 , April 2020, URL: https://www.ijtsrd.com/papers/ijtsrd30851.pdf Paper Url :https://www.ijtsrd.com/engineering/civil-engineering/30851/seismic-response-of-structure-with-single-core/belsare-sumit-bandopanth
Transforming Brand Perception and Boosting Profitabilityaaryangarg12
In today's digital era, the dynamics of brand perception, consumer behavior, and profitability have been profoundly reshaped by the synergy of branding, social media, and website design. This research paper investigates the transformative power of these elements in influencing how individuals perceive brands and products and how this transformation can be harnessed to drive sales and profitability for businesses.
Through an exploration of brand psychology and consumer behavior, this study sheds light on the intricate ways in which effective branding strategies, strategic social media engagement, and user-centric website design contribute to altering consumers' perceptions. We delve into the principles that underlie successful brand transformations, examining how visual identity, messaging, and storytelling can captivate and resonate with target audiences.
Methodologically, this research employs a comprehensive approach, combining qualitative and quantitative analyses. Real-world case studies illustrate the impact of branding, social media campaigns, and website redesigns on consumer perception, sales figures, and profitability. We assess the various metrics, including brand awareness, customer engagement, conversion rates, and revenue growth, to measure the effectiveness of these strategies.
The results underscore the pivotal role of cohesive branding, social media influence, and website usability in shaping positive brand perceptions, influencing consumer decisions, and ultimately bolstering sales and profitability. This paper provides actionable insights and strategic recommendations for businesses seeking to leverage branding, social media, and website design as potent tools to enhance their market position and financial success.
Book Formatting: Quality Control Checks for DesignersConfidence Ago
This presentation was made to help designers who work in publishing houses or format books for printing ensure quality.
Quality control is vital to every industry. This is why every department in a company need create a method they use in ensuring quality. This, perhaps, will not only improve the quality of products and bring errors to the barest minimum, but take it to a near perfect finish.
It is beyond a moot point that a good book will somewhat be judged by its cover, but the content of the book remains king. No matter how beautiful the cover, if the quality of writing or presentation is off, that will be a reason for readers not to come back to the book or recommend it.
So, this presentation points designers to some important things that may be missed by an editor that they could eventually discover and call the attention of the editor.
3. PURPOSE
•The increase in the number of
terrorist attacks especially in the last
few years has shown that the effect
of blast loads on buildings is a
serious matter that should be taken
into consideration in the design
process. Although these kinds of
attacks are exceptional cases, man-made
disasters; blast loads are in
fact dynamic loads that need to be
carefully calculated just like
earthquake and wind loads.
4. •The probability of attack is very small, security measures
should not interfere with daily operations of the building.
•With regard to explosive attacks, the focus is on a damage
limiting or damage mitigating approach.
•Essential techniques for increasing the capacity of a
building to provide protection against explosive effects is
discussed both with an architectural and structural
approach.
5. Overview of possible threats
Explosive Threats:
❍ Vehicle weapon
❍ Hand-delivered weapon
6. Explosive attacks
• Vehicle bombs are able to deliver a
sufficiently large quantity of
explosives to cause potentially
devastating structural damage.
Security design intended to limit or
mitigate damage from a vehicle
bomb assumes that the bomb is
detonated at a so-called critical
location . The critical location is a
function of the site, the building
layout, and the security measures in
place. For a vehicle bomb, the
critical location is taken to be at the
closest point that a vehicle can
approach, assuming that all security
measures are in place.
Vehicle weapon
7. Hand delivered weapon
•Another explosive attack threat is the small bomb that is
hand delivered. Small weapons can cause the greatest
damage when brought into vulnerable, unsecured areas
of the building interior, such as the building lobby, mail
room, and retail spaces. Recent events around the world
make it clear that there is an increased likelihood that
bombs will be delivered by persons who are willing to
sacrifice their own lives.
8. Description of explosives
High explosives are solid in
form and are commonly termed
condensed explosives. TNT
(trinitrotoluene) is the most
widely known example.
There are 3 kinds of explosions
• Unconfined explosions,
• Confined explosions and
• Explosions caused by
explosives attached to the
structure.
9. Explosion process
• An explosion occurs when a gas,
liquid or solid material goes
through a rapid chemical reaction.
When the explosion occurs, gas
products of the reaction are formed
at a very high temperature and
pressure at the source.
• The damage caused by explosions
is produced by the passage of
compressed air in the blast wave
10. Damage mechanism
• Damage due to the air-blast
shock wave may be divided
into
Direct air blast effects
Progressive collapse.
• Direct air-blast effects are
damage caused by the high-intensity
pressures of the air
blast close to the explosion.
• Progressive collapse refers to
the spread of an initial local
failure from element to
element, eventually resulting in
a disproportionate extent of
collapse relative to the zone of
initial damage.
14. • Since air-blast pressures decrease rapidly
with distance, one of the most effective
means of protecting assets is to increase the
distance between a potential bomb and the
assets to be protected. The best way to do
this is to provide a continuous line of
security along the perimeter of the facility
to protect it from unscreened vehicles and
to keep all vehicles as far away from
critical assets as possible.
15. Layout design Guidelines
• Provide a continuous line of defence around the site as far from the
building as practical.
• Place vehicular access points away from oncoming streets.
• Limit the number of vehicular entrances through the secured
perimeter line
• Use a series of landscape features to create an obstacle course
between the building and the perimeter. This approach is most
effective if used in areas where there is ample setback.
• Design planters for the design-level impact to displace the planter a
distance less than the setback.
• Use anti-ram barriers along curbs, particularly on sides of the
building that have a small setback and in areas where high-velocity
impact is possible.
• Use operable anti-ram barriers at vehicular access points. Select
barriers rated to provide the desired level of protection against the
design impact.
16. Architectural Aspects
Structural form and
internal layout
• Desirable structural forms
Arches
Domes
Single story buildings
• Undesirable structural forms
Complex shapes
Projecting roofs or floors
U-shaped building
Multistory buildings
18. Glazing and Cladding
• The choice of a safer glazing
material is critical and it has
been found out that laminated
glass is the most effective in this
context. On the other hand,
applying transparent polyester
anti-shatter film to the inner
surface of the glazing is as well
an effective method.
• For the cladding, several aspects
of design should be considered
to minimize the vulnerability of
people within the building and
damage to the building itself.
20. Structural Layout
• In frame structures, column spacing should be limited. Large column
spacing decreases likelihood that the structure will be able to redistribute
load in event of column failure.
• The exterior bay is the most vulnerable to damage, particularly for
buildings that are close to public streets. It is also less capable of
redistributing loads in the event of member loss, since two-way load
distribution is not possible. It is desirable to have a shallow bay adjacent to
the building exterior to limit the extent of damage.
• Use of transfer girders is strongly discouraged. Loss of a transfer girder or
one of its supports can destabilize a significant area of the building.
Transfer girders are often found at the building exterior to accommodate
loading docks or generous entries, increasing their vulnerability to air-blast
effects. It is highly desirable to add redundant transfer systems where
transfer girders are required.
• In bearing-wall systems that rely primarily on interior cross-walls, interior
longitudinal walls should be periodically spaced to enhance stability and to
control the lateral progression of damage.
• In bearing-wall systems that rely on exterior walls, perpendicular walls or
substantial pilasters should be provided at a regular spacing to control the
amount of wall that is likely to be affected.
22. 1. Exterior Frame
• There are two primary considerations for the exterior frame.
The first is to design the exterior columns to resist the direct effects
of the specified threats.
The second is to ensure that the exterior frame has sufficient
structural integrity to accept localized failure without initiating
progressive collapse.
• For a package weapon, column breach is a major consideration.
Some suggestions for mitigating this concern are listed below.
Do not use exposed columns that are fully or partially accessible
from the building exterior. Arcade columns should be avoided.
Use an architectural covering that is at least six inches from the
structural member. This will make it considerably more difficult to
place a weapon directly against the structure. Because explosive
pressures decay so rapidly, every inch of distance will help to
protect the column.
23.
24. Roof System
• The primary loading on the roof
is the downward air-blast
pressure.
• The preferred system is cast-in-place
reinforced concrete with
beams in two directions.
• If this system is used, beams
should have continuous top and
bottom reinforcement with
tension lap splices.
• Stirrups to develop the bending
capacity of the beams closely
spaced along the entire span are
recommended.
25. Floor system
• The floor system design
should consider three
possible scenarios: air-
Blast loading
Redistributing load in the
event of loss of a column
or wall support below
The ability to arrest debris
falling from the floor or
roof above.
26. Interior Walls
• Interior walls surrounding unsecured spaces are
designed to contain the explosive effects within
the unsecured areas. Ideally, unsecured areas are
located adjacent to the building exterior so that
the explosive pressure may be vented outward as
well.
• Interior walls can also be effective in resisting
progressive collapse if they are designed properly
with sufficient load-bearing capacity and are tied
into the floor systems below and above.
28. Windows and Doors
• Balanced or capacity design philosophy
means that the glass is designed to be no
stronger than the weakest part of the
overall window system, failing at pressure
levels that do not exceed those of the
frame, anchorage, and supporting wall
system.
• There are two general recommendations
for doors.
Doors should open outward so that they
bear against the jamb during the positive-pressure
phase of the air-blast loading.
Door jambs can be filled with concrete to
improve their resistance.
30. Transportation Threats
• Recent terrorist threats to
transportation infrastructure
highlight the need for blast-resistant
detailing standards
tailored specifically for
bridges
• the goal is to formulate blast-resistant
analysis and detailing
guidelines for concrete
highway bridge columns.
33. REFERENCES
1. Federal Emergency Management Agency, December
2003, Primer for Design of Buildings to mitigate
Terrorist Attacks, March 12, 2012
2. 14th world conference on Earthquake Engineering,
October 2008, Paper on Blast Resistant Structures, March
12, 2012
3. Tod Rittenhouse and Robert Smilowitz, March 2004,
Protective Design: Saving Lives through Structural
Engineering, March 12, 2012