This was a design built contract and contractor performed all Design, Engineering, procurement, Build and Construction management and renovation of an expansion to the existing Regional Military Hospital on Camp Thunder garrison in Gardez, for the Afghan National Army (ANA) in Paktiya Province, Afghanistan. The project is defined as a Design-Build process that includes the design, material, labor, and equipment necessary to renovate and construct the existing Hospital Annex building, and its related infrastructure and site work; and several new structures and related site work. This work shall accommodate a total hospital complex design population of approximately 215 personnel. This number includes the combined populations of the existing Main Hospital building, renovated Hospital Annex building, and the new EOC Quarters building.
ARCHETECTURAL SYSTEM:
Hospital Gardez building is a one story building with 3081M2 area, is combination of reception, visitors waiting area, pharmacy room, 12 patient rooms containing 70 patient beds,2 isolation patient rooms and all rooms have separate toilets and sanitary fixtures, offices, meeting room, nurse station, treatment rooms, staff locker rooms, CT room, surgery room, physical therapy, laundry, DFAC, communication, mechanical and electrical rooms and storages. The total occupant containing the hospital personnel and patients is 177 persons. In addition the ANA Gardez hospital project has three more buildings such as Ambulance shelter, EOC Quarter and Fuel /generator canopy.
STRUCTURAL SYSTEM:
The Structure design procedure of Gardez Hospital Expansion included 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 structures consist of single and wall footing, moment resistant concrete framing, and truss roof with non-load bearing CMU exterior walls for Structure of buildings. The foundation systems consist of continuous reinforced concrete strip footings and single footing. Larger footing sizes have been used as required resisting uplift forces when present. 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 Hospital Gardiz consist of four buildings and lateral resisting system of them are mentioned below:
-Main building of Hospital (SMSW): Special Masonry Shear Wall
-Ambulance (COSMF): Cantilever Ordinary Steel Moment Frame
-Generator Canopy ( SRCMF): Special Reinforced Concrete Moment Frame System
-EOC quarter building ( SRCMF): Special Reinforced Concrete Moment Frame System
WATER SYSTEM:
OHG has performed an assessment of the existing water supply and distribution system within
The project Compound. Assessment included distribution system capacity (pipe sizes), water pressure, distribution pump capacity, storage tank capacity, distribution system, water well capacity, fittings and valves, etc. Also design drawing and analysis has been provided for the way of connection of new facilities to main water supply system and firefighting system of site.
OHG also has provided the design and construction of any necessary items to ensure that there is a complete water distribution system connecting the Hospital and the facilities Described in this scope of work to the existing garrison water distribution system. The water Distribution system met all criteria of technical requirement of the project and AED Design Requirements.
SANITARY SEWER SYSTEM:
OHG has performed an assessment of the existing sanitary sewer system and wastewater treatment plant of site and quality of sewer collection system had been performed by previous contractor and its verification. All sanitary sewer collection system elements have been designed and constructed by the OHG as necessary to ensure that the Hospital and the facilities described in this scope of Work is connected to the existing garrison sanitary sewer system.
Sewer collection system consisted of gravity sewer pipe and appurtenances such as manholes, cleanouts and building service Connections.
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, 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, BS 7671, 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 modified existing transformer station, using a 400kVA, 15/0.38kV, 50Hz transformer, and a 350kVA, 380V, 50Hz diesel engine power generator, as backup power source, plus all required medium voltage and low voltage switchgears.
Underground duct-banks and manholes/hand holes for primary and secondary power distribution, and exterior communications systems have 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:
OHG has designed and constructed HVAC system to all facilities included in this project. Heating and Cooling have been provided by duct system AHUs. Units have consist of a mixing box, pre-filter housing, heating coil section, cooling coil section, supply fan section and final filter section The unit have a unit mounted Variable Frequency Drive(VFD) to modulate the supply fan airflow. A static pressure sensor has installed 3/4 of the way down the main duct to control the fan speed. Air handlers have sized to handle the peak design cooling and peak design heating loads, heating source is Hot water and cooling source is chilled water. Hot water for heating system of this building has been provided by Diesel Oil Boilers, and for cooling system, chilled water has been provided by one chiller, it is in accordance with ARI 550/590. Boilers have been placed in the mechanical room and chiller has been placed in the outside of building. Chilled water has been pumped from chiller to AHUs by centrifugal type two (one standby) pumps and for hot water circulation in the boilers system one pump have provided. Based on AED recommendation, we have divided the building up to five different zones each with its own air handler. Say zone 1: basically on the south end of the building, room F108 thru F91, zone 2 isolation rooms, zone 3 basically the north end of the building, room F10 thru f50/F51 zone 4 basically the west end of the building roomF64 thru F85-F-88 offices and zone 5 the internal rooms, room F122 thru F49.
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This was a design built contract and contractor performed all Design, Engineering, procurement, Build and Construction management and renovation of an expansion to the existing Regional Military Hospital on Camp Thunder garrison in Gardez, for the Afghan National Army (ANA) in Paktiya Province, Afghanistan. The project is defined as a Design-Build process that includes the design, material, labor, and equipment necessary to renovate and construct the existing Hospital Annex building, and its related infrastructure and site work; and several new structures and related site work. This work shall accommodate a total hospital complex design population of approximately 215 personnel. This number includes the combined populations of the existing Main Hospital building, renovated Hospital Annex building, and the new EOC Quarters building.
ARCHETECTURAL SYSTEM:
Hospital Gardez building is a one story building with 3081M2 area, is combination of reception, visitors waiting area, pharmacy room, 12 patient rooms containing 70 patient beds,2 isolation patient rooms and all rooms have separate toilets and sanitary fixtures, offices, meeting room, nurse station, treatment rooms, staff locker rooms, CT room, surgery room, physical therapy, laundry, DFAC, communication, mechanical and electrical rooms and storages. The total occupant containing the hospital personnel and patients is 177 persons. In addition the ANA Gardez hospital project has three more buildings such as Ambulance shelter, EOC Quarter and Fuel /generator canopy.
STRUCTURAL SYSTEM:
The Structure design procedure of Gardez Hospital Expansion included 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 structures consist of single and wall footing, moment resistant concrete framing, and truss roof with non-load bearing CMU exterior walls for Structure of buildings. The foundation systems consist of continuous reinforced concrete strip footings and single footing. Larger footing sizes have been used as required resisting uplift forces when present. 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 Hospital Gardiz consist of four buildings and lateral resisting system of them are mentioned below:
-Main building of Hospital (SMSW): Special Masonry Shear Wall
-Ambulance (COSMF): Cantilever Ordinary Steel Moment Frame
-Generator Canopy ( SRCMF): Special Reinforced Concrete Moment Frame System
-EOC quarter building ( SRCMF): Special Reinforced Concrete Moment Frame System
WATER SYSTEM:
OHG has performed an assessment of the existing water supply and distribution system within
The project Compound. Assessment included distribution system capacity (pipe sizes), water pressure, distribution pump capacity, storage tank capacity, distribution system, water well capacity, fittings and valves, etc. Also design drawing and analysis has been provided for the way of connection of new facilities to main water supply system and firefighting system of site.
OHG also has provided the design and construction of any necessary items to ensure that there is a complete water distribution system connecting the Hospital and the facilities Described in this scope of work to the existing garrison water distribution system. The water Distribution system met all criteria of technical requirement of the project and AED Design Requirements.
SANITARY SEWER SYSTEM:
OHG has performed an assessment of the existing sanitary sewer system and wastewater treatment plant of site and quality of sewer collection system had been performed by previous contractor and its verification. All sanitary sewer collection system elements have been designed and constructed by the OHG as necessary to ensure that the Hospital and the facilities described in this scope of Work is connected to the existing garrison sanitary sewer system.
Sewer collection system consisted of gravity sewer pipe and appurtenances such as manholes, cleanouts and building service Connections.
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, 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, BS 7671, 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 modified existing transformer station, using a 400kVA, 15/0.38kV, 50Hz transformer, and a 350kVA, 380V, 50Hz diesel engine power generator, as backup power source, plus all required medium voltage and low voltage switchgears.
Underground duct-banks and manholes/hand holes for primary and secondary power distribution, and exterior communications systems have 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:
OHG has designed and constructed HVAC system to all facilities included in this project. Heating and Cooling have been provided by duct system AHUs. Units have consist of a mixing box, pre-filter housing, heating coil section, cooling coil section, supply fan section and final filter section The unit have a unit mounted Variable Frequency Drive(VFD) to modulate the supply fan airflow. A static pressure sensor has installed 3/4 of the way down the main duct to control the fan speed. Air handlers have sized to handle the peak design cooling and peak design heating loads, heating source is Hot water and cooling source is chilled water. Hot water for heating system of this building has been provided by Diesel Oil Boilers, and for cooling system, chilled water has been provided by one chiller, it is in accordance with ARI 550/590. Boilers have been placed in the mechanical room and chiller has been placed in the outside of building. Chilled water has been pumped from chiller to AHUs by centrifugal type two (one standby) pumps and for hot water circulation in the boilers system one pump have provided. Based on AED recommendation, we have divided the building up to five different zones each with its own air handler. Say zone 1: basically on the south end of the building, room F108 thru F91, zone 2 isolation rooms, zone 3 basically the north end of the building, room F10 thru f50/F51 zone 4 basically the west end of the building roomF64 thru F85-F-88 offices and zone 5 the internal rooms, room F122 thru F49.
