Table Nicaragua 1
Soil type
|
Soil type |
Description |
Vs (m/s) |
|
I |
Bedrock |
> 750 |
|
II |
Hard soil |
360 < Vs ≤ 750 |
|
III |
Medium soil |
180 ≤ Vs ≤ 360 |
|
IV |
Soft soil |
Vs < 180 |
Table Nicaragua 2
Amplification factor (S)*
|
Seismic Zone |
Soil type |
||
|
I |
II |
III |
|
|
A |
1.0 |
1.8 |
2.4 |
|
B |
1.0 |
1.7 |
2.2 |
|
C |
1.0 |
1.5 |
2.0 |
*For soft soil, is necessary a special study (response spectrum). The soils susceptible to suffer liquefaction damage are not included in any case.
Figure Nicaragua 1
Seismic Zoning of Nicaragua
Figure Nicaragua 2
Design spectrum
Table Nicaragua 3
Values of a0 coefficient
|
Group |
Seismic zone |
||
|
A |
B |
C |
|
|
B |
0.1 |
0.2 |
0.3 |
|
C |
0.1 |
0.2 |
0.3 |
*The structures of the Group A, shall be considered an Importance Factor equal to 1.5
Table Nicaragua 4
Ductility factor
|
Ductile factor (Q) |
Description |
|
4 |
Shear wall, steel and reinforced concrete wall, reinforced masonry (rigid structure) |
|
3 |
The structure is supported by columns or steel frame or concrete |
|
2 |
The structure is supported by columns or steel frame or concrete with concrete slabs |
|
1.5 |
The structure of the building is mainly supported by confined masonry and/or hole pieces |
|
1 |
Flexible building or any structure different from mentioned above |
Table Nicaragua 5
Group of the Buildings in RNC - 07
|
Group |
Description |
|
A |
Public service buildings, such as Hospitals, Sanatoriums, Health Centers, Markets, Water Station Plants, (including Supply and Station Tanks of Pumping), Plants for Black Waters Treatment, Power Stations, (including sub-stations and structures for high voltage transmission), Airports, Terminal of Passengers, Central of Communication (including antenna towers), Broadcasting Station. Buildings of public use with high occupation factor, Centers and Buildings of Government and Municipal, Fireman Stations, of Policeman Stations, Educational Centers, Jails, Stadiums, Buildings with content of great value (museums, Libraries, greater medicine deposits), Industrial Facilities with Toxic or Explosive Matter deposits. Centers that use Radio-active Material. |
|
B |
Buildings of public use with high occupation factor (Churches, Cinemas, Auditory, Markets) or where it does not exist frequent agglomeration of persons as: Hotels, Offices, Trades, Industries, Clubs, Banks, Restaurants, Housings, Gas stations, External Clinics. All structure whose collapse could put in danger those of this group or of the group A. |
|
C |
Isolated constructions not classified in the previous groups as: Warehouses, Posts of sale whose surface covered will be minor of 100 m2, repair Shops, stables, silos, posts, walls, fence walls less than 2.5 meters high, structures whose collapse could not cause damages to constructions of the two first groups |
Figure Nicaragua 3
Isoacceleration map with coefficients a0 to define the spectrum design into the Nicaraguan territories for structures of the Group B and C, for structures of Group A, the a0 coefficient shall be multiplied by 1.5 (Table 4)
