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High rise buildings architectural requirements : -

1. Increase the width of the stairs at least 8% of the required minimum stair.

2. Emergency stairs are far from each other and not to exceed the maximum length of the exit path to ensure the presence of the stairs at ends and as close as possible to the perimeter of the building.

3. Dead ends are not exceed in the corridors (6) meters regardless of the occupancy Weight.

4. Provide a lobby witha width not less than of the width of the staircase in front of each emergency stairs with natural ventilation openings, or be pressured by pressurization system.

5. Set an evacuation normative strategy ;taking into consideration all architectural aspects, such as allocated spaces for evacuation outside the building, as well as allocated space or spaces for the occupants of each floor or group of floors equipped with all necessary services in addition to allocated places to plant signboards for escape from the floor ,and a place of the main signboard building.

6. Provide temporary evacuation areas inside the building ,allow occupants to evacuate themselves to these areas, from thefloor in fire , 2 floors above it ,2 floors below it to a safe area to be evacuated later to the main evacuation areas outside the building if needed.
7. Temporary evacuation zone specifications are as following:

- The used fire-resistant materials standard including the doors should resistat least (3) hours.

- There shouldn't bea connection between the temporary evacuation area and the surrounding areas through thefalse ceilings or through the Services.

- It should be provided with separate services from the rest of the building services.

- Evacuation floor should be allocated (5) floors down to the roof , and the temporary evacuationareais a part of the sixth floor.

- The evacuation area is calculatedby the following equation :( number of people in the most intense occupancy floor + half the number of people in the other four floors) × 0.65 square meters / person.

- provide a helipad on the roof of the building, which ishigherthan 150 meters above the surrounding land for evacuationpurpose.

- All materials and decorations used in corridors ,emergencystair lobbies, and elevators should be fire resistant.

Electrical requirements of high rising buildings:

1. Provide an automatic alarm systems in all areas so that systems have been designed and implemented according tofire alarm systemscods requirements.

2. Provide voice evacuation systems serve all areas so that systems have been designed and implemented according tofire alarm systemscods requirements.

3. provide two-way communication system in staircase according to the specifications.

4. Provide emergency enlightenment systems andguidesings to exits ,so that systems designed and implemented accordingfire alarm system cods requirements.

5. Allocate elevatorfor firefighters andfor evacuation of people who are unable to evacuate themselves through the emergencystairs, so that the elevator should be designed and implemented according to the specific requirements of firefighters elevators mentioned in the elevators codesof Jordanian national construction.

6. Provide main power source anda backupgenerator equipped by automatictransfer system (ATS) and enoughfuel reserves for six hours to operate all of building systems, or for 8 hours to operate firepumps , whichever is greater. These sources should supply power for all emergency systems, fire pumps, emergency lightening, fire alarm systems, voice evacuation systems, control systems ofsmoke detectorsand elevators forevacuation ,firefighting and , civil defence and temporary evacuation zones.

7. All Installation supplying all emergency systems must be in isolated metal pipes or non-metallic pipes inside concrete within depth not less than (50 mm) in order to ensure fire resistance not less than two hours.

8.Fittings between fire pumps and spare generator should be hidden outside of the building , in case the need arises to be inside the building , extension must be hidden inside concrete layer at depth of(50 mm) or inside fire-resistant pipes for not less than two hours.

9. Fittings between the backup generator and backupfire pumps should be hidden inside concrete layer in depth (50 mm) or inside fire-resistant pipes for at least two hours.

10.Cables supplying fire pumpsmust be, fire-resistant for at least two hours.

11. Installationsof the voice evacuation system , and fire alarm systemmust be hidden inside concrete layer in a special plastic pipes (vigid p.v.c) and in depth (50 mm) .If it is external ,it should be inside metal pipes.

12. connecting of pressurized staircase system with a fire alarm system according to the specifications.

13. Provide two fans or more instead of one of the smoke control system connected to a separate power source and this is applied to the pressurized staircases.

14. Connecting the elevators with the fire alarm system so that it descends down to the exit or the evacuation zone floor.

15.All elevators should descend to the exit or the evacuation zone floor once the alarm system automatically operated and the elevators doors' should be opened as a first stage, and one elevator should remain for each fire zone for emergency purposes to easily access to nearest point to the fire floor , to transport equipment ,and to evacuate people who are unable to evacuate themselves through stairs.

16. Thefirefighters elevators' should be controlled by mechanism preventing standing in the fire floor.

17. The elevators are wired and connected to separated electric circuits that are connected to the main source of power,backup power source (generator) and automatic transfer system (ATS) .All electric wires should be fire-resistant for not less than two hours.

18.Emergency lightening andguide signsto the exits should be supplied with power through connecting to the main power source and backup source . In case of using batteries ,it should be operated for 90 minutes with attenuation not more than 40 % of the light intensity.

19. Any malfunction in the alarm systems and voice evacuation systems in one of the temporary evacuation zone inside the building should not affect the communication with any other temporary evacuation zone.

20 Two separated circuits for speakers of voice evacuation system should be equipped to each floor,speakers should be sufficient in each floor circuit to be obviously heard by all the occupants of the floor in case of any failure.

Mechanical requirements forHigh rise buildings:

1. providefire-extinguishers to serve all areas with sufficient capacities and numbers according to the requirements of firefighting systems codes, of the Jordanian national construction codes.

2. provide rubber extinguishing hoses to serve all areas , and linen ones in case of high-risk ,so that the design and implementation are according to the mentioned requirements in firefighting systems codes , of the Jordanian national construction codes.

3. provide simple landing valve to serve all areas so that the design and implementation are according to the mentioned requirements of firefighting systems codes , of theJordanian national construction codes.

4.provide hydrant points outside the building so that design and implementation are according to the mentioned requirements of firefighting systems codes , of the Jordanian national construction codes.

5.Provide water sprinklers systems' to serve all areas so that the design and implementation are according tothe mentioned requirements of firefighting systems codes , of theJordanian national construction codes.

6.Provide smoke control system for all temporary evacuation zones and corridors leading to the emergency staircase and its lobbies, and elevators so that the design and the implementation are according to (NFPA- 92 A & B).

7. Provide pressurized staircase systems for all emergency staircase, so that design and implementation are according to (BS 5588).

8. provide a smoke and fireretardant inside ducts so that each smoke area is isolated from the other . The temporary evacuation zones also should be isolated so the design and implementation are according to the requirements (NFPA- 92 A& B).

9. Pressurized staircase system should prevent smoke entering to emergency staircases. The fan capacity can be determined building upon the air speed when thedoor is opened by (0.75)m/s for occupants evacuation purposes , and (2) m/s to firefighters according to (BS 5588).

10.The pressure difference betweeninside and outside emergency staircase shouldn’t be less than (inside floor) (50) Pascal and not more than (60) Pascal according to (BS 5588).
 
11. The number of doors supposed to be opened during pressurizing staircases is three doors, two doors in the fire floor, and the main exitdoor of the emergency staircase.

12. Smoke control systemscan be replaced by ordinary ventilation systems in open areas,inside buildings, such as garages, shopping centers and exhibitions.

Published in the Gazette No. (4862) dated 15/11/2007 and enter into force in 15/12/2007.

























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