GENERAL SPECIFICON
FOR BUILDINGS
Flow Haji Hassan Al A’Ali Charity
Project for Building & Maintenance
Index
1. Foundation …………………………………………………
3
2. BULIDING (on the ground)..……………….………….......
4
3. BUILDING IN 1ST & 2 ND FLOUR………………………...
5
4. PLASTER TO THE WALLS ……………………………...
5
5. SANITARY WARES ………………………………………
5
6. ELECTRACITY…………………………………………….
6
7. DOORS & WINDOWS ……………………………………
7
8. IMPORTANT NOTICES…………………………………..
7
9. SITE INSTRACTIONS ……………………………………
8
10. ATTACHED DRAWINGS ………………………………...
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GENERAL SPECIFICATION
1) Foundations:
1-
The depth of the excavation for the bases should not be less than 40 cm x 60
cm wide if sandy soil (hard soil) and not less than 30 cm if rocky soil.
2-
Preparation and compaction should be done to the bottom of the excavation
to get 95% (max. dry density).
3-
Cover the excavation with concrete blinding from S.R.C. and R.A.K.
aggregate of 10 cm thick using automatic mixer in site or 15 N/mm2 readymix, then use humidity insulation (polythene sheet 1000 gauge) wide enough
to cover the ground beam with the blocks under the ground, mix ratio (1:3:6).
4-
60 cm should be the width of the ground beam for the inner and the outer
walls and with height of 40 cm if the soil either hard or rocky.
5-
The ground beam should be reinforced with 6 nos. of 12 mm dia. Steel bars (3
each bottom & top) fixed by 8 mm dia. rectangular stirrups (50 cm x 30 cm
height) with distance of 25 cm between each other with 12 mm dia. Steel bars
of length fixed in the bottom of the rectangular stirrups 1 m towards up. This
for the bases of inner and outer walls.
6-
You have to make sure that the concrete cover around the reinforcement steel
is 5 cm by fixing cover block between the stirrups and the shuttering ratio
(1:2:4).
7-
The strength of the readymix concrete for the ground beam should be 45
N/mm2 With S.R.C. and R.A.K. aggregate. The quantity of cement should be
not less than 370 kg. per m3 of concrete.
8-
The ground beam should be paint two times with bitumen paint from both
sides (outside & inside).
9-
Block size should be 40x20x20 cm and strength of 7KN from S.R.C. and
R.A.K. aggregate should be built on the top of ground level of 60 cm height
and paint two times with bitumen paint from inside and outside after filling in
between the block by the concrete of S.R.C. & R.A.K. aggregate using
automatic mixer in site.
10-
The filling for the foundation should be sea sand or desert sand with out any
clay materials done by layers, and each layer of 20 cm thick, then pore water
and compact by the compactor to get not less than 95 % max. dry density.
11-
45 N/mm2 concrete from S.R.C. and R.A.K aggregate (the cement should not
less than 370 kg) should be used for casting the ground of 4 inch thick
reinforced by (A 98) B.R.C. 5 mm on top of humidity insulation (polythene
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sheet 1000 gauge) casted after the finishing of the plastering and the screeding
once.
* (as shown in fig. 1 )
2) BUILDING (On the ground)
1-
The block should be of strength 5 KN from S.R.C. and R.A.K. aggregate with height
of 10 blocks, humidity insulation (D.P.C) should be used between first raw of the
blocks and the surface of the ground.
2-
20 cm x 20 cm beam should be casted on the top of the opening of the doors and
windows, that beam should be reinforced with 4 nos. steel bars of 12 mm dia. Fixed
by rectangular stirrups 8 mm dia. With distance of 20 cm between each other. (12 cm
wide x 12 cm height) with concrete 30 N/mm2 from O.P.C. and R.A.K.
3-
Three more raws of blocks should be built on the top of the beam as specified on top.
4-
Cast the upper beam of 20cm from bottom with height of 30cm from outer surface of
wide 8cm from top of the beam with height of 20cm from inner surface of wide 12cm
Reinforced with 4 steel bars of 12mm dia. From both sides of the beam fix by 8mm
dia. Stirrup of 20cm distance between each other for the specification of the concrete
and the steel it’s detailed before for the medium beam (30 N/mm2).
5-
Ceiling from coated wood 2 x 6 inch if the distance 3.5m and 2 x 8 inch if the
distance exceeding 3.5m with 25cm distance between each two wood and filled the
gap between them by concrete, the wood should be covered by plywood of ½ inch
thick and then covered two times by black sheet and boundary insulation (polythene
sheet 1000gauge) after that use steel mesh B.R.C. (5mm dia). Finally pore the 35
N/mm2 ready mix concrete 5 inch from 3 m distance, and then parapet wall of one of
block heights.
* (as shown in fig. 2 )
6-
The stairs case base should be 30x60x100cm wide reinforced with 8 nos of 12mm
(3 each bottom & top and two in the middle) fixed by 8mm dia. Stirrups
(20x50x90cm) with 25cm distance and covered by 5cm from 4 sides fixed with the
stirrups by six nos. of 12cm for the stair according to area of the place. Then cast the
stair by ready mix 35N.
* (as shown in fig. 3 )
7-
Septic tank Should be 6’x8’ & depth of 8’ and blinding of 10 cm for the bottom of
excavation with 50x50cm opening to discharge the water and than build the block as
the same as procedure before No. 4 & 5 in building (on the ground).
8-
In case of front wall, the beam will be 30x30cm reinforced by 4 nos. of 12 mm dia.
fixed by 8mm rectangular stirrup of 25cm wide x 25cm height covered by 5cm &
humidity insulation (Polythene Sheet 1000 gauge) casted by 45 N/mm2 ready-mix
with S.R.C. & R.A.K. Aggregate and then build the blocks of heights of 9 nos. of
O.P.C. & R.A.K. and then cast the beam on the blocks of 15 cm x 20 cm same old
specification.
* (as shown in fig. 4 )
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9-
200 cm x 120 cm is the dimension of the main intrance and build block of 40 x 15 x
20 cm along filed by mixed concrete & 2 no. of 12 mm dia. Steel bar from both sides
and make 10 cm x 160 cm wide caver gate .
*( as shown in fig. 5 )
3) BUILDING IN 1ST & 2ND FLOUR: 1- The building should be same specification of the ground flour except the block will
be 40 x 15 x 20 cm 5N by S.R.C. & R.A.K. aggregate for the inner walls in addition
to the beam of the doors & the windows will be 15 cm x 20 cm reinforce by 4 nos. of
12 mm dia. to make 7 cm x 12 cm stirrup fixed by 8 mm dia. 4 cm cover from the 4
sides should be their the distance between stirrups should be 20 cm and the read-mix
should be30 N/mm2 from O.P.C. and R.A.K. aggregate.
2- Upper beam should be caste 20 cm wide from bottom with height of 30 cm from
outer face with 8 cm wide from the top of the beam, and height of 20 cm from the
inner face with 12 cm width reinforced by 12 mm steel bars from the two sides of the
beam fixed by 8 mm stirrup with distance of 20 cm between each other. The inner
walls, cover and the specification of the concrete as mansions for beams of windows
and doors.
*(as shown in fig 2 )
3- Water proofing for the base of bathrooms should be covered two times by black
sheet, then sewage lines fitting and covered by ceramic.
4- The staircase room should be built of 13 blocks height and the parapet wall of 5
blocks.
5- The read-mix concrete used should be of 25 N/mm2 ordinary cement and 10 mm
R.A.K. aggregate to caste the ground by 5 cm screed after finishing the plaster.
4) PLASTER TO THE WALL:1- Plaster the walls from inside and outside by O.P.C. and sand of ratio of 1:3 for 15
mm thick.
2- The walls and ground of toilet should be covered by ceramic of 15 x 15 cm and
height of 7 feet for bathroom and kitchen. And 3 feet for toilet and grounds by 20 x
20 cm.
5) SANITARY WARES:FOR EACH TOILET
123456-
1 No. Water tank of capacity 130 gallon.
1 No. Full Arabic W.C. and Flesh.
1 No. Shower mixer and full trap.
1 No. Flesh for clean basin and trap*.
1 No. Water Heater of capacity 18 gallons.
1 No. Hand cleaning basin (Flesh).
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* CLEANING BASIN
The cleaning basin should be 1 x 1 m with height of 20 cm from the blocks covered by
ceramic, and 1 m height ceramic for the wall behind the cleaning basin with flesh and
trap.
FOR EACH SEPARATE BATHROOM (IF AVAILABLE)
1 No. Full Arabic W.C. and Flesh.
1 No. Shower mixer and fool trap.
1 No. Flesh for clean basin and trap.
1 No. Water Heater of capacity 18 gallons.
1 No. Hand cleaning basin (Flesh).
* Additional water tank (in case of bathroom without toilet).
KITCHEN
1. Single bowl kitchen sink of 42 x 21 inch drainage fitting.
2. Water mixer.
3. Kitchen cabinet the same size as the kitchen sink (2 doors with drawer and
shelf from inside) from ½ inch wood cover by white Formica.
4. Trap for kitchen.
6) ELETRICITY
For rooms, hall & lobby :1.
2.
3.
4.
2 No. Florissant point.
1 No. Ceiling fan.
1 Point A.C (Except Lobby)
1 No.13 ampair plug.
For the Kitchen: Add to the last 4 conditions
1.
2.
Exhaust fan (25cm × 25cm)
1 No. 13 ampair plug.
Another Points: 1.
2.
1 No. Light and exhaust fan (25cm × 25cm) for each bathroom.
1 No. Light and ringing bill for main door if available.
Notice: To all contractors they should give sample from the sanitary wars & electrical
items before fitting (pipes & fitting also) locks & handles of doors.
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7) DOOR & WINDOWS: 1.
The door of main entrance is steel 200cm × 120cm.
2.
All frames of doors 10cm × 5cm Swedish white wood coated by protection
material. The frames should be painted by one coat of humidity insulation and
two-coat gloss.
3.
The doors of bathrooms should be of play wood filled by 50% of hard wood
(90cm × 200cm) for rooms also with special glue humidity resistance for the
door of hall (90cm × 30cm × 200cm).
4.
The windows frame should be aluminum 100cm × 120cm height and 6mm
thick glass for the rooms, hall, kitchen and stair case room. Also bathroom
windows should be aluminum of 60cm ×60cm with 6mm unclear glass.
5.
The basic dimensions for bedrooms, kitchen, bathrooms, toilet and hall (or
lobby) from outsides:•
•
•
•
•
The length of bedroom 5.5m to 6.0m and the width 3.5m.
The length and the width of the kitchen 3.5m × 3.5m.
The length and the width of the toilet 3m × 3m or two parts for
bathroom or toilet 2m × 2m.
The length and the width of the toilet 2m × 2m.
The width of the lobby 3.5 along the rooms or the hall.
* IMPORTANT NOTICE FLOW GENERAL SPECFICATION:1. Distribute plate of the electricity (Block) should be strong enough or changed
according to the house development.
2. You have to notice that the house need to request for new electricity service
or add or transfer from one place to another or without charge as M.O.H
cards.
3. the charge for the new request for the electricity should be three –phase and
the wooden box for the electricity distributor plate & the counter on the
account o f the contractor, but the transferring of the electricity will be on
account of the house owner.
4. During the supervision of the house the contractor & the supervisor should
notice and record the items which can be used again & follows the G.S. for
the rest of the item the owner have the choice in case he want that items, then
he will get three days to transfer the items from the site.
5. The owner of the house is responsible for building permission & the charge
of that permission from the municipality or other authorities.
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* SITES INSTRUCTIONS: -
1.
The contractor have to excavate, fill and compact the bottom of the base in
case of test fail of ground by excavation of 50 cm and filling it by (Type A) of
15cm -20cm layers and compacting each layer than test the ground to get
density is not less than (Max dry density 95%) and that special arrangements
should be agreed.
2.
The steel bars of the beams should be ready one day before casting of the
ready-mix and not the same day, and then inform the engineer to inspect.
3.
There is no disconnection in these bars of the beam.
4.
The concrete cover should be same as the strength, resistance and appearance
as the concrete with it surround it and the size should be convenient for the
size of the distances between the cover and the concrete. It should be very
good jointed and treat with water for 7-days after casting and it should placed
not more than one meter between each other from their sides and it should
send the samples to the engineer to approve.
5.
The steel of the beams corners should be intersection by shape fixed it by
betel wires and the extra wire which is occurs from the fixing should be
remove before casting.
6.
The vibrator should be always ready in the site to make sure that the concrete
has been fully treated as needed.
7.
Wet haishan should by used to cover the concrete 2-days and list the water to
wet the concrete at least 7-days.
8.
The time for opining the shatter after casting:
• 2-days at least for the sides of ceiling, beams and bases.
• 7-days at least for the bottom of the beams and the stairs.
9.
In case of making the ready mix is ready for casting, supervisor should be
there to check the specifications of concrete.
10. The contractor should test the ceiling after casting by close the drains of water
and fill the ceiling with water after 7-days of casting of 5cm for at least 48
hours.
11. Maximum height in one day should be one meter and the cement between the
blocks should be 10mm to 15mm with making the shape of joints.
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DRAWINGS ATTACHED
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