This document contains details of a building footing plan and foundation design including: 1. A footing plan showing the layout of individual footings (F1-F4) measuring between 8'-6" to 19'-10" in length. 2. Reinforcement details are provided for the individual footings and raft foundation including bar sizes and spacing. 3. A column schedule provides reinforcement details for columns from the base to the top floor. 4. General notes cover concrete grade, steel grade, cover requirements and lapping of bars. 5. A typical footing section and foundation wall detail are shown.

1. A
A
B
B
C
C
D
D
E
E
F
F
1
1
2
2
3
3
4
FOOTING PLAN
SCALE-1:100
2'-0"
3'-0"
8'-6"
8'-6"
3'-9"
8'-6"
8'-6"
8'-6" 8'-6" 8'-6" 8'-6"
3'-9"
19'-10"
15'-6"
7'
8'-6"
8'-6"
15'-6"
17'-2"
8'-6"
8'-6" 8'-6"
8'-6"
8'-6"
8'-6"
8'-6"
8'-6"
8'-6"
FB
14"X22"
FB
14"X22"
FB
14"X22"
FB
14"X22"
FB
14"X22"
FB
14"X22"
FB
14"X22"
FB
14"X22"
FB
14"X22"
FB
14"X22"
FB
14"X22"
FB
14"X22"
F1
F1
F1 F1 F1 F1
F1 F1 F1 F1
F3
F4
F2 F2 F2 F2
THK: 22" THK: 22" THK: 22" THK: 22" THK: 22" THK: 22"
THK: 22"
THK: 22"
THK: 22"
THK: 22"
THK: 22"
THK: 22"
THK: 22"
THK: 22" THK: 22"
THK: 22"
15'-6"
15'-6"
8'-6"
11'-10" 11'-10"
12' 11'-10" 11'-10" 11'-10" 11'-10"
20'-6"
7'-1"
20'-6"
16mm @ 150mm C/C
Top and Bottom
16mm
@
150mm
C/C
Top
and
Bottom
16mm @ 150mm C/C
Top and Bottom
16mm
@
150mm
C/C
Top
and
Bottom
20 mm @ 150mm C/C Bottom
16 mm @ 150mm C/C Top
20 mm @ 150mm C/C Bottom
16 mm @ 150mm C/C Top
20
mm
@
150mm
C/C
Bottom
16
mm
@
150mm
C/C
Top
16mm @ 150mm C/C
Top and Bottom
X
X
1
2
3
4
Ground Lvl
8mm-2L @ 150mm C/C
1'-10"
8'-6" 11'-9" 15'-6" 10'-6" 8'-6"
FB 14"X22" FB 14"X22"
16mm @ 150mm C/C 16mm @ 150mm C/C 20mm @ 150mm C/C 16mm @ 150mm C/C
3-16mm th
2-16mm ex
3-16mm th
Footing Section at X-X
FOOTING ID L1 L2 DEPTH (D)
REINFORCEMENT DETAILS
RAFT SCHEDULE FOR 80 kN/m2 (BOTTOM & TOP REINFOREMENT)
BOTTOM BARS
16Ø @ 150 C/C
BOTH DIRECTIONS
F1 8'6" 22"
TOP BARS
16Ø @ 150 C/C
BOTH DIRECTIONS
8'6"
10Ø @ 150 C/C
BOTH DIRECTIONS
F2 15'6" 22" 16Ø @ 150 C/C
BOTH DIRECTIONS
8'6"
16Ø @ 150 C/C
BOTH DIRECTIONS
F3 17'6" 22" 16Ø @ 150 C/C
BOTH DIRECTIONS
8'6"
16Ø @ 150 C/C
BOTH DIRECTIONS
F4 15'6" 22" 16Ø @ 150 C/C
BOTH DIRECTIONS
19'10"
COLUMN REINFORCEMENT DETAILS
S. NO.
1
2
BASE TO PLINTH
PLINT TO FIRST
FLOOR
FIRST TO SECOND
FLOOR
SECOND TO THIRD
FLOOR
COLUMN
C1
COLUMN SIZE
(18"X18")
3
4
STIRRUPS
6
8 NOS. -20mmØ
8 NOS. -20mmØ
+
FIFTH TO TOP
FLOOR
5
A: 2L-8Ø @ 100mm c/c &
B: 2Nos-2L-8Ø @ 100mm c/c
1'-6"
1'-6"
FORTH TO FIFTH
FLOOR
4
THIRD TO FORTH
FLOOR
4
8 NOS. -20mmØ
8 NOS. -20mmØ
+
1'-6"
1'-6"
8 NOS. -20mmØ
8 NOS. -20mmØ
+
1'-6"
1'-6"
8 NOS. -16mmØ
8 NOS. -20mmØ
+
1'-6"
1'-6"
8 NOS. -16mmØ
8 NOS. -20mmØ
+
1'-6"
1'-6"
8 NOS. -16mmØ
8 NOS. -20mmØ
+
1'-6"
1'-6"
8 NOS. -16mmØ
8 NOS. -20mmØ
+
1'-6"
1'-6"
6. DEVELOPMENT / LAP LENGTH (Ld.) FOR BARS.
1. USE M20 GRADE CONCRETE FOR SLAB, BEAM,
2. USE Fe500 GRADE STEEL (fy=500N/mm² )
3. CLEAR COVER TO BARS
a. FOR CONCRETE MEMBERS IN CONTACT WITH SOIL = MIN 50mm
b. FOR COLUMN (FROM FACE TO LATERAL TIES) = 40mm
c. FOR BEAMS (FROM FACE TO LATERAL STIRRUPS) = 25mm
d. FOR OUTER BARS IN SLAB = 15mm
4. BARS IN COLUMNS SHALL BE SPLICED ONLY AT MID HEIGHT OF COLUMN.
5. BARS SPLICING IN BEAM SHALL BE AVOIDED IN THE SPAN WHERE
INTERMEDIATE BEAM IS CONNECTED AND SHALL BE ONLY AS SHOWN IN DWG.
7. TEMP./DISTRIBUTION REINFORCEMENT FOR SLAB - TMT 8Ø @ 200 C/C
8. CLEAR VERTICAL DISTANCE BETWEEN TWO ROWS (LAYERS) OF BARS=25mm OR MAXIMUM SIZE OF REBAR
BAR DIA-(mm) 8 10 12 16 20 25
FOR M20 Ld 456 570 684 912 1140 1425
COLUMN, FOUNDATION, SILL & LINTEL BANDS (ALL RCC WORKS)
e. FOR STAIRCASE = 20mm
9. PROVIDE STIRRUPS OR TIES AT MIN 150 C/C AT LAP LOCATIONS IN BEAM AND AT MIN 100 C/C AT LAP LOCATION IN COLUMNS.
50mm (MAX.)
50mm (MAX.)
Stirrups-100mm C/C
50mm (MAX.)
1:6 SLOPE RATIO
NOT MORE THAN 50% BAR
SHOULD BE LAP AT ONE
POSITION
(First stirrup from column)
1:6 SLOPE RATIO Stirrups-100mm C/C
NOT MORE THAN 50% BAR
SHOULD BE LAP AT ONE
POSITION
50mm (MAX.)
FLOOR BEAM
50mm (MAX.)
TYP. COLUMN SHEAR
REINFORCEMENT DETAIL
Ld (Extra Bars) (Extra Bars)
CHAIR RESTING ON BOTTOM BARS
@600 - 900 mm staggered position
60
5
0
75
NEGATIVE BAR (N)
NEGATIVE BAR (N)
FLOOR BEAM
(Lap Zone for Bottom Bars)
(No Lap Shall be
allowed for Bottom
(Extra Bars)
Bars)
13.
12.
11.
D=DEPTH OF BEAM
d=EFFECTIVE DEPTH OF BEAM
H = CLEAR SPAN OF FLOOR.
GENERAL NOTES:
TYPICAL LAP LOCATION FOR BEAM BARS
FLOOR BEAM
L2
TYPICAL DETAIL FOR SLAB BARS
1:6 SLOPE RATIO
LAPPING METHOD
Ld
0.25*L1
40
40
(Not to Scale)
Øb
DETAIL OF HOOK
1
0
*
Ø
b
L1
0.15*L1 or Ld
(whichever is greater)
0.25*L2
0.3*L1 or Ld (whichever is greater)
125
SLAB
THICK
2d
Ld
>0.25L or Ld
whichever is greater
Ld
>0.25L or Ld
whichever is greater
>0.25L or Ld
whichever is greater
d
L/3 L/3
L
0.15*L1
0.15*L1 or Ld
(whichever is greater)
0.3*L2 or Ld (whichever is greater)
0.15*L2 or Ld
(whichever is greater)
LAP ZONE FOR TOP BARS
<50mm(Typ.)
Ld
H
D
D
H/4
Ld
H/4
H
H/4
H/4
Ld
ZONE
FOR
LAP
SPLICING
(STIRRUPS NOT SHOWN FOR CLARITY)
STIRRUPS 100 C/C
MINIMUM 3 SETS OF STIRRUPS
STIRRUPS 100 C/C
MINIMUM 3 SETS OF STIRRUPS
MINIMUM 3 SETS OF STIRRUPS
STIRRUPS 100 C/C
10. FOUNDATION
10.1 FOUNDATION DESIGN HAVE BEEN PROVIDED FOR SAFE BEARING CAPACITY OF 150kN/m2.
10.2 IF SAFE BEARING CAPACITY OF SOIL IS FOUND LESS THAN 100KN/m2, SPECIAL STUDY FOR FOUNDATION DESIGN IS
REQUIRED.
14. Ld=DEVELOPMENT LENGHT
15. SYMBOLS USED IN BEAM DETAILS
S1 = 8mm dia 4"C/C
S2 = 8mm dia 6"C/C
CONNECTION OF BAND REBARS AND COLUMN
Ld
Ld
OPTION 1
DRILL AND ANCHOR BARS
WITH ANCHOR CHEMICALS
OPTION 2
COLUMN
TYPICAL FOUNDATION WALL DETAIL
(Scale= 1:20)
75mm P.C.C.(1:3:6)
RAMMED EARTH
600mm R.C.C. RAFT
200mm GRAVEL COMPACTION
9"
1:4 C/S Brickwork
75mm P.C.C.(1:3:6)
38mm FF
200mm GRAVEL COMPACTION
3 -16mm Ø (th)
3-16mmØ (th.)
22"
14"
2-16mmØ(ex)
Strap
beam
:
01
NORTH JOBNUMBER/DRAWINGNUMBER SHEET
Signature:
Plot No: 647
Checked By: Bharat Acharya
Scale:
1:100
Date: Sep 2019
Dwg.Title:
Registration No.:2602
Location:Dhumbarahi
Area: 0-5-3-3
Building Type:
Owner :Safala Upreti
General Notes, Footing Detail, Column Schedule
Residential
OFFICIAL USE ONLY
Designer / Consultant: Bharat Acharya