This was a design built contract and contractor performed all Design, Engineering, procurement, Build and Construction management of a new Hospital Addition at the ANA Garrison at Herat, Afghanistan. The addition is one facility that consists of the following distinct functions
(1) Hospital patient sleeping room facility for 46 bed patients
(2) Administrative area for medical staff offices
(3) Full service dining facility (DFAC) with kitchen and dining area with seating for 60 dining patrons.
ARTECTECTURAL SYSTEM:
Herat Hospital is a one story building with 2468M2 area and the rooms including in this building are reception, waiting area, pharmacy, offices, meeting room, telephone cabin, nurse study, treatment room, patient rooms, male and female lockers and baths, procedure room, isolation rooms, laundry, break room, kitchen and dining, electrical room, mechanical room, storages, gift shop and toilets. The building total occupant is 111 persons.
All above mentioned buildings’ exterior walls are CMU walls and R-values in floors are 19, walls are 13 and roofs are 30.
STRUCTURAL SYSTEM:
The Structure design procedure of Herat Hospital includes introducing the codes and standards, design criteria and practices that have been used in the design of this project. For the steel and cold-formed structures and components the allowable stress method was used, also for the concrete structures ultimate state method was employed. For the analysis of the structures, manually calculation, 2D and 3D computer modeling based on finite elements method was used.
Summary of codes and standards: IBC 2006: International Building Code, ACI 301: Specifications for Structural Concrete for Buildings, ACI 318: Building Code Requirements for Reinforced Concrete, ACI 530: Building Code Requirements for Masonry Structures, ASCE 7-05: Minimum Design Loads for Buildings,AISC-ASD05: American Institute of Steel Construction, Ninth Edition, UFC 3-310-01: Design Load Assumptions for Buildings, UFC 3-310-02A: Structural Design Criteria for Buildings, UFC 4-010-01: DoD Minimum Antiterrorism Standards for Buildings Conventional Weapons Effects, USACE.
The Herat Hospital structure consist of two building, part A and part B. The foundation systems consist of reinforced single concrete footings. Larger footing sizes have been used as required resisting uplift forces when present. Minimum depth below exterior footings is equal to frozen depth that is 800mm. The lateral resistance systems for each structural system will be designed for the most critical affects from either wind or seismic forces based on the IBC & AISC Codes. The analyses of the structures subjected to the loads were made with the finite element method. The seismic analysis has been made through an approach permitted by the IBC2006 code.
The lateral resistant system for Herat Hospital is Dual system (special moment frame with special reinforced concrete shear walls).
WATER SYSTEM:
OHG has conducted Design and construct a Potable Water System (PWS), to include a well and submersible pump as a source of water, protected in an enclosed well house, a water chlorination and filtration system, a water storage tank or tanks, booster pumps, and pressure tank housed in a pump house to deliver water, and an underground pipe distribution network system. OHG has constructed housing for both water well and boosting system. These houses includes all required electrical and ventilation equipment’s.
SANITARY SEWER SYSTEM:
OHG has provided a new sanitary sewer system; the system has been designed in accordance with AED Sanitary Sewer and Septic Systems Design Requirements. The sewer collection system consisted of gravity sewer pipe and appurtenances such as manholes, cleanouts and building service connections. The gravity sewer collection system has been connected to the existing sewer collection system.
ELECTRICAL SYSTEM:
The OHG has designed and constructed all required electrical systems for the facilities operations including power supply and distribution system, interior distribution and wiring, interior and exterior lighting systems, emergency lighting, fire alarm system, public address system, nurse call system, voice and data network, and lighting protection system.
Electrical systems for the project has been designed and constructed IAW UFC 4-510-01, UFC 3-550-03FA, IEEE 241, UFC 3-560-10N, ETL 1110-3-412, UFC 3-520-01, NESC, NFPA 70, NFPA 72, NFPA 99, NFPA 101, NFPA 780, IESNA Lighting Hand Book and etc.
The power supply for the hospital facilities was including a new double ended substation, using two 400kVA, 15/0.38kV, 50Hz transformers, and two 400kVA, 380V, 50Hz diesel engine power generators, as backup power source, plus all required medium voltage and low voltage switchgears.
Underground duct-banks and manholes/handholes for primary and secondary power distribution systems has designed and constructed IAW the referenced codes and regulations herein.
Pole mounted exterior lighting system has been designed and installed by OHG as was required by the contract.
OHG was responsible for all required Design, calculations, procurement, installation, commissioning and testing of all installed electrical system on a turnkey basis for a safe and full functional system in accordance with the contract documents and other reference publications herein.
MECHANICAL SYSTEM:
The OHG has designed and constructed HVAC system to all facilities included in this project. Heating and Cooling have been provided by Reversible central Air Handling unit consisting of DX evaporative coolers, outdoor air intake. Supply air has been ducted centrally throughout the Admin Area, Dining Facility (DFAC), Bathroom /shower/Laundry and kitchen area. These facilities consisting central return air system and does not require central return air system for kitchen area and bed isolation rooms.
Air has been distributed from ceiling through diffusers and all diffusers are connected with branch ducts to main ducts. Main ductwork has been constructed of galvanized steel of rectangular shape and all branches are made of galvanized steel round ducts.
All ducts have been insulated and located under attic. The velocity of air in the branches is (2-3) m/sec and in main ducts the velocity is from (3-6) m/sec.
Return system: 80% of supply air will return to the air-conditioner fresh air: 20% of supply air will be taken from outside for the heating mode. All diffuser square shape and velocity in diffusers are taken of 2.5m/s.
Omran Inc is an international construction company bringing innovative solutions to build a better future.
This was a design built contract and contractor performed all Design, Engineering, procurement, Build and Construction management of a new Hospital Addition at the ANA Garrison at Herat, Afghanistan. The addition is one facility that consists of the following distinct functions
(1) Hospital patient sleeping room facility for 46 bed patients
(2) Administrative area for medical staff offices
(3) Full service dining facility (DFAC) with kitchen and dining area with seating for 60 dining patrons.
ARTECTECTURAL SYSTEM:
Herat Hospital is a one story building with 2468M2 area and the rooms including in this building are reception, waiting area, pharmacy, offices, meeting room, telephone cabin, nurse study, treatment room, patient rooms, male and female lockers and baths, procedure room, isolation rooms, laundry, break room, kitchen and dining, electrical room, mechanical room, storages, gift shop and toilets. The building total occupant is 111 persons.
All above mentioned buildings’ exterior walls are CMU walls and R-values in floors are 19, walls are 13 and roofs are 30.
STRUCTURAL SYSTEM:
The Structure design procedure of Herat Hospital includes introducing the codes and standards, design criteria and practices that have been used in the design of this project. For the steel and cold-formed structures and components the allowable stress method was used, also for the concrete structures ultimate state method was employed. For the analysis of the structures, manually calculation, 2D and 3D computer modeling based on finite elements method was used.
Summary of codes and standards: IBC 2006: International Building Code, ACI 301: Specifications for Structural Concrete for Buildings, ACI 318: Building Code Requirements for Reinforced Concrete, ACI 530: Building Code Requirements for Masonry Structures, ASCE 7-05: Minimum Design Loads for Buildings,AISC-ASD05: American Institute of Steel Construction, Ninth Edition, UFC 3-310-01: Design Load Assumptions for Buildings, UFC 3-310-02A: Structural Design Criteria for Buildings, UFC 4-010-01: DoD Minimum Antiterrorism Standards for Buildings Conventional Weapons Effects, USACE.
The Herat Hospital structure consist of two building, part A and part B. The foundation systems consist of reinforced single concrete footings. Larger footing sizes have been used as required resisting uplift forces when present. Minimum depth below exterior footings is equal to frozen depth that is 800mm. The lateral resistance systems for each structural system will be designed for the most critical affects from either wind or seismic forces based on the IBC & AISC Codes. The analyses of the structures subjected to the loads were made with the finite element method. The seismic analysis has been made through an approach permitted by the IBC2006 code.
The lateral resistant system for Herat Hospital is Dual system (special moment frame with special reinforced concrete shear walls).
WATER SYSTEM:
OHG has conducted Design and construct a Potable Water System (PWS), to include a well and submersible pump as a source of water, protected in an enclosed well house, a water chlorination and filtration system, a water storage tank or tanks, booster pumps, and pressure tank housed in a pump house to deliver water, and an underground pipe distribution network system. OHG has constructed housing for both water well and boosting system. These houses includes all required electrical and ventilation equipment’s.
SANITARY SEWER SYSTEM:
OHG has provided a new sanitary sewer system; the system has been designed in accordance with AED Sanitary Sewer and Septic Systems Design Requirements. The sewer collection system consisted of gravity sewer pipe and appurtenances such as manholes, cleanouts and building service connections. The gravity sewer collection system has been connected to the existing sewer collection system.
ELECTRICAL SYSTEM:
The OHG has designed and constructed all required electrical systems for the facilities operations including power supply and distribution system, interior distribution and wiring, interior and exterior lighting systems, emergency lighting, fire alarm system, public address system, nurse call system, voice and data network, and lighting protection system.
Electrical systems for the project has been designed and constructed IAW UFC 4-510-01, UFC 3-550-03FA, IEEE 241, UFC 3-560-10N, ETL 1110-3-412, UFC 3-520-01, NESC, NFPA 70, NFPA 72, NFPA 99, NFPA 101, NFPA 780, IESNA Lighting Hand Book and etc.
The power supply for the hospital facilities was including a new double ended substation, using two 400kVA, 15/0.38kV, 50Hz transformers, and two 400kVA, 380V, 50Hz diesel engine power generators, as backup power source, plus all required medium voltage and low voltage switchgears.
Underground duct-banks and manholes/handholes for primary and secondary power distribution systems has designed and constructed IAW the referenced codes and regulations herein.
Pole mounted exterior lighting system has been designed and installed by OHG as was required by the contract.
OHG was responsible for all required Design, calculations, procurement, installation, commissioning and testing of all installed electrical system on a turnkey basis for a safe and full functional system in accordance with the contract documents and other reference publications herein.
MECHANICAL SYSTEM:
The OHG has designed and constructed HVAC system to all facilities included in this project. Heating and Cooling have been provided by Reversible central Air Handling unit consisting of DX evaporative coolers, outdoor air intake. Supply air has been ducted centrally throughout the Admin Area, Dining Facility (DFAC), Bathroom /shower/Laundry and kitchen area. These facilities consisting central return air system and does not require central return air system for kitchen area and bed isolation rooms.
Air has been distributed from ceiling through diffusers and all diffusers are connected with branch ducts to main ducts. Main ductwork has been constructed of galvanized steel of rectangular shape and all branches are made of galvanized steel round ducts.
All ducts have been insulated and located under attic. The velocity of air in the branches is (2-3) m/sec and in main ducts the velocity is from (3-6) m/sec.
Return system: 80% of supply air will return to the air-conditioner fresh air: 20% of supply air will be taken from outside for the heating mode. All diffuser square shape and velocity in diffusers are taken of 2.5m/s.
