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AIM:-To Create and Analyse the given building in ETABS 2018, the structural model has to be prepared in accordance with IS 1893 and as per IS 13920. To design the pile cap and pile reinforcement details,Tie beam connecting the pile caps, to sketch the column reinforcements, to produce the framing plan and beam…
Samiksha dhole
updated on 18 Dec 2022
AIM:-To Create and Analyse the given building in ETABS 2018, the structural model has to be prepared in accordance with IS 1893 and as per IS 13920. To design the pile cap and pile reinforcement details,Tie beam connecting the pile caps, to sketch the column reinforcements, to produce the framing plan and beam detailing for ground floor.
Given datas:-
The wall are made of AAC blocks Pile capacity -280kN,M25 Concrete Fe 500 steel, Soil type 3.
INTRODUCTIONS:-
PROCEDURE:-
Living Rooms,Bedrooms and dormitories |
2 kN/m^2 |
Kitchen and Laundries |
3 kN/m^2 |
Billiards and public lounges |
3 kN/m^2 |
Store rooms |
5 kN/m^2 |
Dining rooms,cafeterias and restaurant |
4 kN/m^2 |
Office rooms |
2.5 kN/m^2 |
Bath and toilets |
2 kN/m^2 |
Corridors, passages, staircase |
3 kN/m^2 |
Balconies |
4 kN/m^2 |
T=0.09h/sqrtd
Tx=(0.09*16.85)/(67.7)^0.5=0.184 Seconds. Or Ty=0.09*16.85/(13.3)^0.5=0.415 sec
Results and discussion
2.select modal participating ratios we have got that at mode 7 we have got above 90% so its ok.
3.now select the base reactions check that Eqx Eqy values should be same and Rsx and Rsy values also should be atleast equal to Eqx and Eqy respectively. if not then just take the rsx values and divide it by Eq values whatever the values will get that values needs to be multiplied in the load cases rsx tab.
.
Beam 14 | Right end | Centre | Left End |
Bottom Reinforcement | 672 | 605 | 609 |
required | |||
Dia of bars | 20 | 20 | 20 |
Number of bars | 2.140127389 | 1.926751592 | 1.939490446 |
Bottom Reinforcement | 675 | 605 | 605 |
Provided at Top | 2.149681529 | 1.926751592 | 1.926751592 |
1#24 +2#24 extra is provide | 2#20 is provide | 2#20 is provide |
COLUMN DESIGN | |||||
COLUMNS ALONG THE GRID 1B | Column dimension | 450*600 | |||
1 | Longitudinal Reinforcment calculation | ||||
a) | Minimum Reinforcment | 0.8% of Gross cross sectional Area | 2160 | mm^2 | |
As per clause no.26.5.3.1 of Is 456 2000 | |||||
b) | Maximum Reinforcment | 6% of Gross cross sectional Area | 15600 | mm^2 | |
As per clause no.26.5.3.1 of Is 456 2000 | |||||
c) | Maximum Ast along 3 A | 4739 | mm^2 | ||
As per clause no.26.5.3.1 of Is 456 2000 | |||||
Dia of the longitudinal Reinforcment should 12 mm or more | |||||
There for using 16 mm dia bars | |||||
Dia of bar | 24 | ||||
Area of 1 bar | 452.448 | ||||
number of bars | 10.47413183 | ||||
There fore using 8 number of 28 mm dia bars | Ast | 4524.48 | mm^2 | ||
remaining St | Ast | 214.52 | mm^2 | ||
2 number #12 extra longtidudinal Reinforcements needs to be provided | Ast | 628 | mm^2 | ||
There fore total longitudinal reinforcment provided | |||||
10 no. of 24 mm dia bars | 4525 | ||||
2no. Of 12 mm dia bars | 628 | ||||
Ast provided | 5152.48 | mm^2 | |||
The spacing between the longitudinal bars should not exceed 300mm. | |||||
2 | Shear Reinforcment calculation | ||||
a) | Minimum dia for shear Reinforcment for 32 mm dia | 8 mm | |||
As per clause no 7.4.2 of IS 13290- 2016 | |||||
b) | Maximum Shear reinforcment from the Etabs out put | 665 | mm^2 | ||
c) | There for using 8 mm dia bars | mm^2 | |||
Dia of bar | 8 | ||||
Area of 1 bar | 50.272 | ||||
Special confining reinforcement clause no 8 of IS 13290 2016 | |||||
The special cofining reinforcement shall be provided at lo. | |||||
lo should not be less tham | |||||
larger lateral dimension of the column | 600 | ||||
1/6 of the clear span of member | 554.1666667 | ||||
450 mm | 450 | ||||
There fore lo = 600 mm | |||||
The spacing of shear reinforcment along lo should not be more than | |||||
a | 1/4 of minimum dimension of beam/column | ||||
minimum dimension of column | 150 | mm | |||
1/4th of minimum dimension of column | 112.5 | mm | |||
b | 6 times the dia of smallest longitudinal reinforcement bar | ||||
Dia of smallest longitudinal reinforcement bar | 12 | mm | |||
6 times the dia of smallest longitudinal reinforcement bar | 72 | mm | |||
c | 100 mm | 100 | mm | ||
There fore for special confining reinfrocemnet #8mm @100 mm c/cis provided in the lo zone. | |||||
Transverses Reinforcment calculation for the zone upto h/4. | |||||
hc in m | Beam depth | h | |||
Height of the column of Plinth level column | 1 | 0.6 | 0.4 | ||
Height of the column ofGF column | 3.45 | 0.6 | 2.85 | ||
Height of the column of FF column | 3.45 | 0.6 | 2.85 | ||
Height of the column of SF column | 3.45 | 0.6 | 2.85 | ||
Height of the column of TF column | 3.45 | 0.6 | 2.85 | ||
h | h/4 | approximate | |||
Plinth level | 0.4 | 0.1 | 200 mm | ||
GF | 2.85 | 0.7125 | 800 mm | ||
FF | 2.85 | 0.7125 | 800 mm | ||
SF | 2.85 | 0.7125 | 800 mm | ||
TF | 2.85 | 0.7125 | 800 mm | ||
Transverse reinforcement in the splice Zone as per clause number 7.4.of IS 13290 2016 | |||||
As per the clause nuo. 7.4.1 of IS 13290 2016 the ends should have 135 hook with an | |||||
extension of 6d of bars. | |||||
d | 32 | mm | |||
6d | 192 | mm | |||
As per the clause nuo. 7.4.2 of IS 13290 2016 | |||||
a | 8 mm dia bars are used in stirrups if the dia of longitudinal bars is less than or equal to 32 mm | ||||
b | The maximum c/c spacing of stirrups is 300 mm | ||||
c | a cross tie should be provided if the dimension of the column exceeds 300 mm. | ||||
There fore upto h/4 #8mm @300 mm c/cis provided in the lo zone. | |||||
As per the clause no. 7.3.2.1 of IS 13290 2016 | |||||
100 mm spacng should be provided within this splicing zone | |||||
There fore in the splice zone #8mm @100 mm c/cis provided in the lo zone. | |||||
For the columns terminating in the footing | |||||
as per clause nummber 8.2 of IS 13290 2016. | |||||
special confinement reinforcement should be provided upto 300 mm or larger length inside the footing. | |||||
COLUMNS ALONG THE GRID 3B | Column dimension | 450*650 | |||
1 | Longitudinal Reinforcment calculation | ||||
a) | Minimum Reinforcment | 0.8% of Gross cross sectional Area | 2340 | mm^2 | |
As per clause no.26.5.3.1 of Is 456 2000 | |||||
b) | Maximum Reinforcment | 6% of Gross cross sectional Area | 17550 | mm^2 | |
As per clause no.26.5.3.1 of Is 456 2000 | |||||
c) | Maximum Ast along 3 A | 5022 | mm^2 | ||
As per clause no.26.5.3.1 of Is 456 2000 | |||||
Dia of the longitudinal Reinforcment should 12 mm or more | |||||
There for using 16 mm dia bars | |||||
Dia of bar | 28 | ||||
Area of 1 bar | 615.832 | ||||
number of bars | 8.154821445 | ||||
There fore using 8 number of 32 mm dia bars | Ast | 4926.656 | |||
Remaning Ast | Ast | 95.344 | |||
There for using 16 mm dia bars | |||||
Dia of bar | 16 | ||||
Area of 1 bar | 201.088 | ||||
number of bars | 0.474140675 | ||||
There fore using 2 number of 20 mm dia bars | Ast | 402.176 | |||
There fore total longitudinal reinforcment provided | |||||
8 no. of 28 mm dia bars | |||||
2no. Of 16 mm dia bars | |||||
Ast provided | 5328.832 | mm^2 | |||
The spacing between the longitudinal bars should not exceed 300mm. | |||||
2 | Shear Reinforcment calculation | ||||
a) | Minimum dia for shear Reinforcment for 32 mm dia | 8 mm | |||
As per clause no 7.4.2 of IS 13290- 2016 | |||||
b) | Maximum Shear reinforcment from the Etabs out put | 720.48 | mm^2 | ||
c) | There for using 8 mm dia bars | mm^2 | |||
Dia of bar | 8 | ||||
Area of 1 bar | 50.272 | ||||
Special confining reinforcement clause no 8 of IS 13290 2016 | |||||
The special cofining reinforcement shall be provided at lo. | |||||
lo should not be less tham | |||||
larger lateral dimension of the column | 650mm | ||||
1/6 of the clear span of member | 554.1666667 | ||||
450 mm | 450 | ||||
There fore lo = 650 mm | |||||
The spacing of shear reinforcment along lo should not be more than | |||||
a | 1/4 of minimum dimension of beam/column | ||||
minimum dimension of column | 450 | mm | |||
1/4th of minimum dimension of column | 112.5 | mm | |||
b | 6 times the dia of smallest longitudinal reinforcement bar | ||||
Dia of smallest longitudinal reinforcement bar | 20 | mm | |||
6 times the dia of smallest longitudinal reinforcement bar | 120 | mm | |||
c | 100 mm | 100 | mm | ||
There fore for special confining reinfrocemnet #8mm @100 mm c/cis provided in the lo zone. | |||||
Transverses Reinforcment calculation for the zone upto h/4. | |||||
hc in m | Beam depth | h | |||
Height of the column of Plinth level column | 1.5 | 0.5 | 1 | ||
Height of the column ofGF column | 4 | 0.5 | 3.5 | ||
Height of the column of FF column | 3.45 | 0.5 | 2.95 | ||
Height of the column of SF column | 3.45 | 0.5 | 2.95 | ||
Height of the column of TF column | 3.45 | 0.5 | 2.95 | ||
3.45 | 0.5 | 2.95 | |||
h | h/4 | approximate | |||
Plinth level | 1 | 0.25 | 300 mm | ||
GF | 3.5 | 0.875 | 900 mm | ||
FF | 2.95 | 0.7375 | 900 mm | ||
SF | 2.95 | 0.7375 | 900 mm | ||
TF | 2.95 | 0.7375 | 900 mm | ||
Transverse reinforcement in the splice Zone as per clause number 7.4.of IS 13290 2016 | |||||
As per the clause nuo. 7.4.1 of IS 13290 2016 the ends should have 135 hook with an | |||||
extension of 6d of bars. | |||||
d | 32 | mm | |||
6d | 192 | mm | |||
As per the clause nuo. 7.4.2 of IS 13290 2016 | |||||
a | 8 mm dia bars are used in stirrups if the dia of longitudinal bars is less than or equal to 32 mm | ||||
b | The maximum c/c spacing of stirrups is 300 mm | ||||
c | a cross tie should be provided if the dimension of the column exceeds 300 mm. | ||||
There fore upto h/4 #8mm @300 mm c/cis provided in the lo zone. | |||||
As per the clause no. 7.3.2.1 of IS 13290 2016 | |||||
100 mm spacng should be provided within this splicing zone | |||||
There fore in the splice zone #8mm @100 mm c/cis provided in the lo zone. | |||||
For the columns terminating in the footing | |||||
as per clause nummber 8.2 of IS 13290 2016. | |||||
special confinement reinforcement should be provided upto 300 mm or larger length inside the footing. |
Importing the software Safe 2016
Given data:-
Column of size:- 450mm *600 mm & 600mm*450m m
pile has a load carrying capacity of 280kN
Pile length-16 m and dia of pile -500 mm
SBC-150kN/m^2
Solution:
K=EA/L
E=5000(fck)^0.5=5000(25)^0.5=25000 N/mm^2
Area of pile =22/7*d^2=3.142*(500)^2/4=196375m^2
L-10000m
K=25000*0.7855/16=306835.9N/mm==419.
maximum Reinforcement was
For Top:- 29834 mm^2/m=29834/3.3=9041 mm^2=28 nos. 20 mm dia are provided
For Bottom-13326mm^2/m=4038 mm^2=13 nos. 20 mm dia are provided
maximum Reinforcement was
For Top:- 19926= 3831mm^2/m=12 nos of 20 mm dia are provided
For Bottom-22784mm^2/m=4398 mm^2=14 nos 20 mm dia are provided
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