(1) The document provides calculations to determine the required base plate thickness for a column base connection according to Eurocode standards. It includes input parameters such as column forces, material properties, bolt sizes and locations.
(2) Three equations are solved simultaneously to determine the maximum pressure under the base plate, tension in the hold down bolts, and active concrete area.
(3) The calculated pressure and bolt tension exceed design values, requiring a redesign of the base plate length/width or use of higher strength concrete.
(4) The minimum required base plate thickness is then calculated based on the design bending moment and material yield strength.
As-salamu alaykum
Welcome to the presentation on “T Beam Design: Singly & Doubly by USD method” Presented By -
S. M. Rahat Rahman
ID: 10.01.03.104
1.Contents :
USD (Ultimate Strength Design Method)
T-beam
T - Beam acts Like Singly Reinforced Beam
T – Action vs rectangular Action
Effective Flange width of t-beam
Strength analysis
Nominal moment for t section
2. USD : Based on the ultimate strength of the structure member assuming a failure condition , due to concrete crushing or yielding of steel. Although there is additional strength of steel after yielding (strain hardening zone) which will not be considered in the design.
Actual loads are multiplied by load factor to obtain the ultimate design loads. ACI code emphasizes this method.
3. T Beam : For monolithically casted slabs, a part of a slab act as a part of beam to resist longitudinal compressive force in the moment zone and form a T-Section. This section form the shape of a "T“ . It can resist the longitudinal compression
4. Occurrence and Configuration of T-Beams
• Common construction type
• The slab forms the beam flange, while the part of the beam projecting below the slab forms is what is called web or stem.
5. Singly Reinforced Reinforcement is provided in tension zone only
6. Doubly Reinforced > Concrete can not develop the required compressive force to resist the maximum bending moment
> Reinforcement is provided in both compression and tension zone.
7. T-Beam Act As a Singly Reinforced Beam
8. Continuous T Beam :
When T-shaped sections are subjected to negative bending moments, the flange is located in the tension zone. Since concrete strength in tension is usually neglected in strength design, the sections are treated as rectangular sections.
On the other hand, when sections are subjected to positive bending moments, the flange is located in the compression zone and the section is treated as a T-section.
9. Effective Flange Width
10. Strength analysis of T beam
11. Analysis of T beam
12. T Beam moment calculation
This publication provides a concise compilation of selected rules in the Eurocode 8 Part 1 & 3, together with relevant Cyprus National Annex, that relate to the seismic design of common forms of concrete building structure in the South Europe. Rules from EN 1998-3 for global analysis, type of analysis and verification checks are presented. Detail design check rules for concrete beam, column and shear wall, from EN 1998-3 are also presented. This guide covers the assessment of orthodox members in concrete frames. It does not cover design rules for steel frames. Certain practical limitations are given to the scope.
Due to time constraints and knowledge, I may not be able to address the whole issues.
Please send me your suggestions for improvement. Anyone interested to share his/her knowledge or willing to contribute either totally a new section about Eurocode 8-3 or within this section is encouraged.
Prepared by madam rafia firdous. She is a lecturer and instructor in subject of Plain and Reinforcement concrete at University of South Asia LAHORE,PAKISTAN.
As-salamu alaykum
Welcome to the presentation on “T Beam Design: Singly & Doubly by USD method” Presented By -
S. M. Rahat Rahman
ID: 10.01.03.104
1.Contents :
USD (Ultimate Strength Design Method)
T-beam
T - Beam acts Like Singly Reinforced Beam
T – Action vs rectangular Action
Effective Flange width of t-beam
Strength analysis
Nominal moment for t section
2. USD : Based on the ultimate strength of the structure member assuming a failure condition , due to concrete crushing or yielding of steel. Although there is additional strength of steel after yielding (strain hardening zone) which will not be considered in the design.
Actual loads are multiplied by load factor to obtain the ultimate design loads. ACI code emphasizes this method.
3. T Beam : For monolithically casted slabs, a part of a slab act as a part of beam to resist longitudinal compressive force in the moment zone and form a T-Section. This section form the shape of a "T“ . It can resist the longitudinal compression
4. Occurrence and Configuration of T-Beams
• Common construction type
• The slab forms the beam flange, while the part of the beam projecting below the slab forms is what is called web or stem.
5. Singly Reinforced Reinforcement is provided in tension zone only
6. Doubly Reinforced > Concrete can not develop the required compressive force to resist the maximum bending moment
> Reinforcement is provided in both compression and tension zone.
7. T-Beam Act As a Singly Reinforced Beam
8. Continuous T Beam :
When T-shaped sections are subjected to negative bending moments, the flange is located in the tension zone. Since concrete strength in tension is usually neglected in strength design, the sections are treated as rectangular sections.
On the other hand, when sections are subjected to positive bending moments, the flange is located in the compression zone and the section is treated as a T-section.
9. Effective Flange Width
10. Strength analysis of T beam
11. Analysis of T beam
12. T Beam moment calculation
This publication provides a concise compilation of selected rules in the Eurocode 8 Part 1 & 3, together with relevant Cyprus National Annex, that relate to the seismic design of common forms of concrete building structure in the South Europe. Rules from EN 1998-3 for global analysis, type of analysis and verification checks are presented. Detail design check rules for concrete beam, column and shear wall, from EN 1998-3 are also presented. This guide covers the assessment of orthodox members in concrete frames. It does not cover design rules for steel frames. Certain practical limitations are given to the scope.
Due to time constraints and knowledge, I may not be able to address the whole issues.
Please send me your suggestions for improvement. Anyone interested to share his/her knowledge or willing to contribute either totally a new section about Eurocode 8-3 or within this section is encouraged.
Prepared by madam rafia firdous. She is a lecturer and instructor in subject of Plain and Reinforcement concrete at University of South Asia LAHORE,PAKISTAN.
Economic Concrete Frame Elements to Eurocode 2Yusuf Yıldız
Eurocode 2'ye göre betonarme çerçeve elemanlarının ekonomik tasarımlarını ele alan dokümanın içerisinde yerinde dökülen, prekast, kompozit, ardgerme kolonlar, kirişler, döşemeler, perdeler ve merdivenlerin tasarımlarına dair bilgiler yer almakta.
This publication provides a concise compilation of selected rules in the Eurocode 8, together with relevant Cyprus National Annex, that relate to the design of common forms of concrete building structure in the South Europe. Rules from EN 1998-1-1 for global analysis, regularity criteria, type of analysis and verification checks are presented. Detail design rules for concrete beam, column and shear wall, from EN 1998-1-1 and EN1992-1-1 are presented. This guide covers the design of orthodox members in concrete frames. It does not cover design rules for steel frames. Certain practical limitations are given to the scope.
This document presents an example of analysis design of slab using ETABS. This example examines a simple single story building, which is regular in plan and elevation. It is examining and compares the calculated ultimate moment from ETABS with hand calculation. Moment coefficients were used to calculate the ultimate moment. However it is good practice that such hand analysis methods are used to verify the output of more sophisticated methods.
Also, this document contains simple procedure (step-by-step) of how to design solid slab according to Eurocode 2. The process of designing elements will not be revolutionised as a result of using Eurocode 2.
This publication provides a concise compilation of selected rules in the Eurocode 8, together with relevant Cyprus National Annex, that relate to the design of common forms of concrete building structure in the South Europe. It id offers a detail view of the design of steel framed buildings to the structural Eurocodes and includes a set of worked examples showing the design of structural elements with using software (CSI ETABS). It is intended to be of particular to the people who want to become acquainted with design to the Eurocodes. Rules from EN 1998-1-1 for global analysis, type of analysis and verification checks are presented. Detail design rules for steel composite beam, steel column, steel bracing and composite slab with steel sheeting from EN 1998-1-1, EN1993-1-1 and EN1994-1-1 are presented. This guide covers the design of orthodox members in steel frames. It does not cover design rules for regularities. Certain practical limitations are given to the scope.
Peer review presentation for the strut and tie method as an analysis and design approach for the mat on piles foundations of the primary separation cell (vessel).
Sachpazis: Strip Foundation Analysis and Design example (EN1997-1:2004)Dr.Costas Sachpazis
Strip Foundation Analysis and Design example, in accordance with EN1997-1:2004 incorporating Corrigendum dated February 2009 and the recommended values
Présentation du nouveau pont Champlain par :
- Sylvain Tremblay, Chargé de construction, Aire de préfabrication et Post tension
- Jean-Philippe Veilleux, Chargé de construction, Pylône et sous-fondation
- Caroline-Anne Perreault, Conseillère Communications
Economic Concrete Frame Elements to Eurocode 2Yusuf Yıldız
Eurocode 2'ye göre betonarme çerçeve elemanlarının ekonomik tasarımlarını ele alan dokümanın içerisinde yerinde dökülen, prekast, kompozit, ardgerme kolonlar, kirişler, döşemeler, perdeler ve merdivenlerin tasarımlarına dair bilgiler yer almakta.
This publication provides a concise compilation of selected rules in the Eurocode 8, together with relevant Cyprus National Annex, that relate to the design of common forms of concrete building structure in the South Europe. Rules from EN 1998-1-1 for global analysis, regularity criteria, type of analysis and verification checks are presented. Detail design rules for concrete beam, column and shear wall, from EN 1998-1-1 and EN1992-1-1 are presented. This guide covers the design of orthodox members in concrete frames. It does not cover design rules for steel frames. Certain practical limitations are given to the scope.
This document presents an example of analysis design of slab using ETABS. This example examines a simple single story building, which is regular in plan and elevation. It is examining and compares the calculated ultimate moment from ETABS with hand calculation. Moment coefficients were used to calculate the ultimate moment. However it is good practice that such hand analysis methods are used to verify the output of more sophisticated methods.
Also, this document contains simple procedure (step-by-step) of how to design solid slab according to Eurocode 2. The process of designing elements will not be revolutionised as a result of using Eurocode 2.
This publication provides a concise compilation of selected rules in the Eurocode 8, together with relevant Cyprus National Annex, that relate to the design of common forms of concrete building structure in the South Europe. It id offers a detail view of the design of steel framed buildings to the structural Eurocodes and includes a set of worked examples showing the design of structural elements with using software (CSI ETABS). It is intended to be of particular to the people who want to become acquainted with design to the Eurocodes. Rules from EN 1998-1-1 for global analysis, type of analysis and verification checks are presented. Detail design rules for steel composite beam, steel column, steel bracing and composite slab with steel sheeting from EN 1998-1-1, EN1993-1-1 and EN1994-1-1 are presented. This guide covers the design of orthodox members in steel frames. It does not cover design rules for regularities. Certain practical limitations are given to the scope.
Peer review presentation for the strut and tie method as an analysis and design approach for the mat on piles foundations of the primary separation cell (vessel).
Sachpazis: Strip Foundation Analysis and Design example (EN1997-1:2004)Dr.Costas Sachpazis
Strip Foundation Analysis and Design example, in accordance with EN1997-1:2004 incorporating Corrigendum dated February 2009 and the recommended values
Présentation du nouveau pont Champlain par :
- Sylvain Tremblay, Chargé de construction, Aire de préfabrication et Post tension
- Jean-Philippe Veilleux, Chargé de construction, Pylône et sous-fondation
- Caroline-Anne Perreault, Conseillère Communications
Meeting of the Verdun / Le Sud-Ouest Good Neighbourly Relations Committee
New Champlain Bridge Corridor Project
Centre Elgar - 8 february 2017
- Discuss the work completed, underway and to come from now until spring 2017
- Follow up on the various files under the responsibility of Infrastructure Canada and Ville de Montréal
- Answer questions, identify potential solutions and discuss the issues
L'objectif de cette présentation est de mettre en évidence les différences majeures entre l’Eurocode 2 et le BAEL. Les points suivants seront abordés :
- Comparaison Eurocodes / BAEL sur les combinaisons des actions aux états-limites ;
- Comparaison Eurocodes / BAEL sur la loi de comportement des matériaux ;
- Comparaison Eurocodes / BAEL sur les méthodes d’analyse structurale et de justification des structures ;
- Repères nécessaires à l'application des règles de l’Eurocode 2 à travers l'analyse de calculs concrets.
- Analyse des résultats d’un dimensionnement selon les règles de l’Eurocode 2 et celles de BAEL au moyen d'exemples de calcul des précis différents éléments constructifs du bâtiment (poutres, poteaux, dalles …).
Civil Engineering – Oldest Yet A Highly Sought After Career Choice in IndiaAnkur Tandon
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Flexure Behaviour of Ferrocement Strengthened RC beamsIEI GSC
Presentation on Flexure Behaviour of Ferrocement Strengthened RC beams
made by Axay Dhariwal under guidance of Prof Sunil Raiyani, Nirma Institute of Technology at #33NCCE #IEIGSC
Flexure Behaviour of Ferrocement Strengthened RC beamsIEI GSC
Presentation on Flexure Behaviour of Ferrocement Strengthened RC beams by Akshay Dhariwal & Prof Sunil Raiyani, Institute of Technology, Nirma University, Ahmedabad at #33NCCE 33rd National Convention of Civil Engineers at #IEIGSC
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Memorandum Of Association Constitution of Company.pptseri bangash
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2. Materials
Steel bolt characteris cs per EN 1993-1-8
Bolt class 4.6 Sec on 3 Table 3.1
bolt classes recommended by the Eurocode;
Bold yield strength The Na onal Annex may exclude certain bolt classes.
fyb = 240 N/mm2
Par al factor for steel bolts per EN 1993-1-8
γM2 = 1.25 Sec on 2 Table 2.1
par al safety factors recommended by the Eurocode;
Bolt design strength fyd = fy / γM2 Numerical values for safety factors may be defined
fyd-b = 192.0 N/mm2
in the Na onal Annex
Steel base plate characteris cs
Steel grade S 235
Steel yield strength
fy = 235 N/mm2
for thickness under 40mm
fy = 215 N/mm2
for thickness between 40mm and 80mm
Par al factor for steel elements (in bending) per EN 1993-1-1
γM0 = 1.00 Sec on 6.1 (1) and Note 2B
value recommended by the Eurocode; value to be used
can be found in the Eurocode Na onal Annexes
Steel modulus of elas city per EN 1993-1-1
Es = 210000 N/mm2
Sec on 3.2.6 (1)
Concrete characteris cs
Concrete class C12/15 per EN 1992-1-1:2004
fck = 12 MPa concrete characteris c cylinder strength Sec on 3 Table 3.1
Baseplate http://www.onlinestructuraldesign.com/calcs/Baseplate/Baseplate.aspx
2 of 7 6/11/2013 10:40 PM
4. Ecm = 27000 N/mm2
and 30% respec vely. For basalt aggregates the value
should be increased by 20%
Column base forces
N = 1000 kN axial force pair of column base forces. Mx and My are not
M = 380 kN*m bending moment considered simultaneous.
e = M/F = 380.0 mm
H/6 = 100.00 mm eccentricity
e > H/6 => Baseplate with large eccentricity
Three equa ons, three unknowns: Fb, Y, sc
(Axial force in steel hold down bolts, ac ve area under base plate,
maximum pressure under base plate)
1. Forces equilibrium
Y*sc/2 - Fb -N = 0
Fb + N = Y*sc*B/2 (1)
2. Bending moment equilibrium
Fb * f + (Fb + N) * (H/2 - Y/3) - N * e = 0
Fb = -N * (H/2 - Y/3 -e)/(H/2 - Y/3 + f) (2a)
N = -Fb * (H/2 - Y/3 -e)/(H/2 - Y/3 + f) (2)
3. Represen ng the elas c behaviour of the concrete
support and the steel hold-down bolt:
a/b = eb/ec = (sb / Es) / (sc / Ec)
since Es = sb / es modulus of elas city of steel bolt
Ec = sc / ec modulus of elas city of concrete
Baseplate http://www.onlinestructuraldesign.com/calcs/Baseplate/Baseplate.aspx
4 of 7 6/11/2013 10:40 PM
6. or
Y3
+ K1 * Y2
+ K2 * Y + K3 = 0
where
K1 = 3 * (e - H/2) = 240
K2 = [(6 * n * Ab)/B] * (f + e) = 30362
K3 = - K2 * (H/2 + f) = -16435192
Y = 166.5 mm
Fb = 278.92 kN (in 2 bolts ) per (2a) hold down bolts max. tension (in all bolts)
F1.bolt = Fb /2 = 139.46 kN hold down bolt max. tension - in 1 bolt
F1.bolt /(π*φ2
/4) = 443.92 N/mm2 > fyd-b redimension, bolt effec ve stress is larger than bolt design stress
192.0 N/mm2
sc = 25.35 MPa per (3)
sc > fcd fcd = 8.00 MPa effec ve max. pressure under baseplate is compared
redesign base plate length and/or width with the concrete design compressive strength
stress under base plate is larger than the concrete compressive capacity if the max. pressure is higher than the concrete
Design of the Base Plate Thickness
Cri cal sec on loca on
s = 155.22 mm
Stress at the cri cal sec on loca on
ssc = sc*(Y - s) / Y = 1.72 MPa
Design cri cal moment - at cri cal sec on
MEd.plate = [(σsc*s/2)*(s/3)+(σc*s/2)*(s*2/3)]*B 126.31 kN*m
MC,Rd = Mpl,rd = (Wpl * fy)/ γM0 (4)
per EN 1993-1-1
Sec on 6.2.5 (2) Formula 6.13
Design resistance for bending for bending about one
principal axis for class 1 or 2 cross sec ons
Plas c sec on modulus of rectangular sec ons
Baseplate http://www.onlinestructuraldesign.com/calcs/Baseplate/Baseplate.aspx
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7. Wpl = B*tpl
2
/4 (5)
(tpl = base plate thickness)
from (4) and (5) => [fy * (B*tpl
2
)/4]/ γM0≥ MEd.plate
=> tpl≥ √[4 * MEd.plate * γM0 / (B * fy)]
=> tpl≥ 62.58 mm (with fy = 215 N/mm2
)
References:
Design of Welded Structures - O. W. Blodge (James F. Lincoln Arc Welding Founda on)
EN 1992-1-1:2004 - Eurocode 2: Design of concrete structures - Part 1-1: General rules and rules for buildings
EN 1993-1-1:2005 - Eurocode 3: Design of steel structures - Part 1-1: General rules and rules for buildings
EN 1993-1-8:2005 - Eurocode 3: Design of steel structures - Part 1-8: Design of joints
Baseplate http://www.onlinestructuraldesign.com/calcs/Baseplate/Baseplate.aspx
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