BE BE AWAREAWARE

OFOFEARTHQUAKE !EARTHQUAKE !

Shaking is dangerous Shaking is dangerous ………………

If Shilpa Shetty shakes, If Shilpa Shetty shakes, many hearts fail.many hearts fail.If ground shakes, If ground shakes,

many buildings fail.many buildings fail.

Damages Damages due todue to

EARTHQUAKEEARTHQUAKE

Earthquake Earthquake not only not only

damages buildings damages buildings but also but also

takes lives.takes lives.

Why not we take Why not we take precaution to precaution to

save our lives ?save our lives ?

SAFETY PRECAUTION SAFETY PRECAUTION OF BUILDINGS OF BUILDINGS

IN IN SEISMIC ZONESSEISMIC ZONES

WelcomeWelcometoto

TOTAL ZONES:4 TOTAL ZONES:4 (ZONE- II, III, IV &V)(ZONE- II, III, IV &V)

comes undercomes under

2 seismic zones 2 seismic zones

i.e. Zone – II & IIIi.e. Zone – II & III

EAST COAST EAST COAST RAILWAYRAILWAY

• FRAMED &FRAMED &

• BOX TYPEBOX TYPE

(popularly known as Load Bearing (popularly known as Load Bearing Masonry)Masonry)

TYPE OF BUILDING TYPE OF BUILDING CONSTRUCTIONCONSTRUCTION

BIS CODES TO BE BIS CODES TO BE FOLLOWED FOR FOLLOWED FOR

SEISMIC RESISTANCESEISMIC RESISTANCE

• IS 1893( PART-1)-2002IS 1893( PART-1)-2002(FOR ALL CONSTRUCTIONS)(FOR ALL CONSTRUCTIONS)

• IS 13920-1993IS 13920-1993(FOR FRAMED CONSTRUCTION)(FOR FRAMED CONSTRUCTION)

• IS 4326-1993IS 4326-1993(FOR BRICK MASONRY CONSTRUCTION)(FOR BRICK MASONRY CONSTRUCTION)

BRIEF ON BRIEF ON FRAMED FRAMED

CONSTRUCTIONCONSTRUCTION

BAR BENDING BAR BENDING TO BE CHECKED AT SITETO BE CHECKED AT SITE (AT COLUMN-BEAM JUNCTION)(AT COLUMN-BEAM JUNCTION)

Ld + 10 dia of bar

WRONG CORRECT

REINFORCEMENT

COLUMN

BEAM

REINFORCEMENT

COLUMN

BEAM

(LATERAL TIES & (LATERAL TIES & SHEAR REINFORCEMENT)SHEAR REINFORCEMENT)

WRONG CORRECT

450

10 x dia of bar

450

• IMPORTANT NOTE FOR LAPPING OF BARSIMPORTANT NOTE FOR LAPPING OF BARSLAPPING OF BAR SHOULD NOT BE PROVIDED LAPPING OF BAR SHOULD NOT BE PROVIDED INBETWEEN QUARTER LENGTH OF MEMBER FROM INBETWEEN QUARTER LENGTH OF MEMBER FROM JOINT & IT SHOULD BE STAGGERED.JOINT & IT SHOULD BE STAGGERED.

FOCUSFOCUSONON

LOAD LOAD BEARING BEARING

CONSTRUCTIOCONSTRUCTIONN

BUILDING BUILDING CATEGORIESCATEGORIES

Depends on IMPORTANCE FACTOR “Depends on IMPORTANCE FACTOR “II””• HOSPITALS, SCHOOLS,MONUMENTAL HOSPITALS, SCHOOLS,MONUMENTAL

STRUCTURES, TELEPHONE EXCHAGES, STRUCTURES, TELEPHONE EXCHAGES, LARGE COMMUNITY BUILDINGS, STATION LARGE COMMUNITY BUILDINGS, STATION BUILDINGS, etc. : BUILDINGS, etc. : II =1.5 =1.5

• OTHER BUILDINGS : OTHER BUILDINGS : II =1.0 =1.0

BUILDING CATEGORIESBUILDING CATEGORIES(ZONEWISE)(ZONEWISE)

I Zone-II Zone-III

1.0 B C

1.5 C D

HEIGHTHEIGHT OF OF

BUILDINGBUILDING• MAXIMUM HEIGHT = 15.00 m MAXIMUM HEIGHT = 15.00 m

(from mean ground level to top of roof slab)(from mean ground level to top of roof slab)

• MAXIMUM STOREY = 4 STOREYSMAXIMUM STOREY = 4 STOREYS

ZONE-IIZONE-II

4 storeys for all categories4 storeys for all categories

ZONE-IIIZONE-III

preferably 2 storeys for important categories & preferably 2 storeys for important categories &

4 storeys for other categories4 storeys for other categories

MORTAR MIXMORTAR MIX (MINIMUM)(MINIMUM)

Category cement : sand

B & C 1 : 6

D 1 : 4

CONCRETE GRADECONCRETE GRADE (MINIMUM)(MINIMUM)

• FOR RCC WORK : M20 FOR RCC WORK : M20 (as per IS (as per IS 456:2000)456:2000)

(1 cement:1.5 sand:3 (1 cement:1.5 sand:3 aggregates)aggregates)

• FOR MCC WORK : M15 FOR MCC WORK : M15 (as per IS (as per IS 456:2000)456:2000)

(1 cement:2 sand:4 (1 cement:2 sand:4 aggregates)aggregates)

BRICKSBRICKS

• The crushing strength should not be The crushing strength should not be less than 35 Mpa (N/mmless than 35 Mpa (N/mm22))

SEISMIC SEISMIC STRENGTHENING STRENGTHENING ARRANGEMENTSARRANGEMENTS

• BANDS (a, b & c)BANDS (a, b & c)

• VERTICAL STEEL AT VERTICAL STEEL AT CORNERS & JUNCTION CORNERS & JUNCTION OF WALLS (d)OF WALLS (d)

• VERTICAL STEEL AT VERTICAL STEEL AT JAMBS OF WINDOW (e)JAMBS OF WINDOW (e)PLINTH BAND (a)

LINTEL BAND (b)

ROOF BAND (c)

P.L.

REQUIREMENTSREQUIREMENTS

CATEGORYNO OF STOREYS

PROVISION

B1 to 3 a,b,c

4 a,b,c,d

C1 & 2 a,b,c

3 & 4 a,b,c,d,e

D1 & 2 a,b,c,d,e

3 & 4 a,b,c,d,e & DOWEL BARS

NOTESNOTES

• PLINTH BAND (a) : It is to be provided PLINTH BAND (a) : It is to be provided where strip footings of masonry (other where strip footings of masonry (other than RCC) are used and soil is either than RCC) are used and soil is either soft or uneven in its properties as soft or uneven in its properties as frequently happens in hilly areas. frequently happens in hilly areas.

The top of all lintels (over openings & The top of all lintels (over openings & walls) should be at one level. walls) should be at one level.

BANDSBANDS

• Two bars in lintel band (over Two bars in lintel band (over

walls):walls): • Minimum thickness was 75 mm for two Minimum thickness was 75 mm for two bars. However, it will be more based on bars. However, it will be more based on exposure condition as per IS 456 : 2000.exposure condition as per IS 456 : 2000.

• Mild Exposure condition: thickness = 75 Mild Exposure condition: thickness = 75 mm (clear cover = 33 mm)mm (clear cover = 33 mm)

• Moderate Exposure condition: thickness Moderate Exposure condition: thickness = 90 mm (clear cover = 38 mm)= 90 mm (clear cover = 38 mm)

• Severe Exposure condition: thickness = Severe Exposure condition: thickness = 115 mm (clear cover = 53 mm)115 mm (clear cover = 53 mm)

•Four bars in lintel band (very Four bars in lintel band (very common):common):• Minimum thickness was 150 mm for four Minimum thickness was 150 mm for four

bars. However, it will be more based on bars. However, it will be more based on exposure condition as per IS 456 : 2000.exposure condition as per IS 456 : 2000.

• Mild Exposure condition, thickness = 150 Mild Exposure condition, thickness = 150 mm (clear cover = 33 mm)mm (clear cover = 33 mm)

• Moderate Exposure condition, thickness Moderate Exposure condition, thickness = 150 mm (clear cover = 38 mm)= 150 mm (clear cover = 38 mm)

• Severe Exposure condition, thickness = Severe Exposure condition, thickness = 175 mm (clear cover = 53 mm)175 mm (clear cover = 53 mm)

ARRANGEMENT OF BARS IN ANY ARRANGEMENT OF BARS IN ANY BANDBAND

• FOR DETAILS OF BARS, REFER TABLE-6 OF IS 4326FOR DETAILS OF BARS, REFER TABLE-6 OF IS 4326• FOR ROOM SIZE GREATER THAN 8.OO m, IT IS DESIRED FOR ROOM SIZE GREATER THAN 8.OO m, IT IS DESIRED

TO INSERT PILLASTERS/BUTTRESSES TO REDUCE THE TO INSERT PILLASTERS/BUTTRESSES TO REDUCE THE LENGTHLENGTH

THICKNESS

TWO BARS

FOUR BARS

SIZE & POSITION SIZE & POSITION OF OPENINGS IN WALLSOF OPENINGS IN WALLS

X = Distance from the inside corner of outside wall X = Distance from the inside corner of outside wall For B category, x = zeroFor B category, x = zero

C category, x = 230 mmC category, x = 230 mm D category, x = 450 mm D category, x = 450 mm

For other details, refer Table – 4 of IS 4326For other details, refer Table – 4 of IS 4326• If openings do not comply with above, they should be If openings do not comply with above, they should be

strengthened by providing reinforced concrete as shown in next strengthened by providing reinforced concrete as shown in next page.page.

x

ARRANGEMENTARRANGEMENT

OPENINGREINFORCED CONCRETE

WALL

LINTEL BAND

WALL

FOR FURTHER SAFETY FOR FURTHER SAFETY STANDARDS IN STANDARDS IN

BUILDINGSBUILDINGSREFERREFER

IS 4326 : 1993IS 4326 : 1993

HAVE HAVE A BEAUTIFUL A BEAUTIFUL

& & SAFESAFE

BUILDINGBUILDING

EAST COAST RAILWAYEAST COAST RAILWAY

ENGINEERS ASSOCIATIONENGINEERS ASSOCIATION BHUBANESWARBHUBANESWAR

(Affiliated with ALL INDIA RAILWAY ENGINEERS (Affiliated with ALL INDIA RAILWAY ENGINEERS FEDERATION) (AIREF)FEDERATION) (AIREF)

CourtesyCourtesy

TTHHAANNQ Q UU AALLLL