Technical Report

 

 

 

Technical Report

About

Soil and Foundations Study

 

For Project: Construction of Economic Housing Architecture Model E

Port Said Street -   Kha City

 Province of Al-Galubeiah

Under the supervision of

Directorate of Housing and Utilities in Qalioubia

January 2005

 

 

 

Report content

I.     Introduction and purpose of the report

Second     : Origin and procedures

Third     : Sectors

Fourth    : field tests of soil

Fifth   : Groundwater tests

Sixth   : Laboratory tests for soil samples

Seventh    : The nature of soil in situ

Eighth     : Final recommendations for the foundations

Attachments:

 ×      Figure (1): Crooky public location and places of the sessions.

 ×      Figure (2): a longitudinal sector in the table No. (1).

×       Figure (3): a longitudinal sector in the table No. (2).

×       Figure (4): The results of the sand-sand analysis of the soft sand content on the ratio of silt and sand to medium and smooth and mite effects.

 

 

 

In the name of of Allah the Merciful

I. Introduction and purpose of the report

Based on the letter of Mr. Engineer / Director General of the Directorate of Housing and Utilities  Governorate Qaliubiya 0 This report was prepared to propose the appropriate level of incorporation of the project of establishing an economic housing architecture model (e) Rate - Bousaid Street - City Kaha -  - Qalubia . And determination of the net safe voltage of the soil at the foundation level (endurance of foundations) and recommendations and requirements for the design and implementation of foundations

 

Second: Origin and procedures

The architecture building prepared for this report consists of a floor + five upper floors, and the building of the building from the structural point of view is a structure of reinforced concrete system of tiles, beams and columns (Skeleton of Reinforced Concrete)0

A total of 15 meters (15 meters) of the current surface level of the earth was carried out at the site at a depth of 15 meters (15 meters). Figure 1 shows the general location and the locations of the grooves. The sensors were implemented using the 6-inch Equipment for drilling and extraction of soil samples in situ and standard penetration test equipment ( SPT, Standard Penetration Test0) Soil samples were extracted every meter in soil layers. The procedures were carried out and samples were obtained according to the Egyptian Code of Soil Mechanics and the design and implementation of the foundations for the year 1997  

Third: Sectors

Figures 2.3 of this report contain the longitudinal sections of the site 0 where the current surface level of the site was considered to be zero ± 0) for the sessions

Based on the report of the supervisor on the work of the probes and the examination of soil samples received in the laboratories, it was possible to identify the soil sectors at the site as follows:

Session No. 1

·   Of the current surface up to 2.50 meters of surface soil from the mud and mud embankment, breaking the red bricks and the scattering of gravel and coarse sand.

·        From a depth of 2.50 to a depth of 5.60 m clay clay light light coherent contains traces of gravel and red and red.

·        From a depth of 5.60 m to a depth of 7.50 m clay clay built contains a fractured pottery.  

·        From a depth of 7.50 m to a depth of 8.25 m   clay clay clay and break the roof and organic materials.

·         From a depth of 8.25 meters to a depth of 12.25 meters fine light brown sand contains a proportion of silt.   

·        From a depth of 12.25 meters to a depth of 15.00 meters (the end of the surface) sand medium to smooth brown and silt effects

Table No. 2

·   Of the current ground surface up to 2.25 m depth of surface soil from the mud and mud embankment and break the red brick and coarse sand.

·        From a depth of 2.25 to a depth of 5.25 m Clay Light brown Medium cohesion Contains traces of the ceiling.

·        From a depth of 5.25 m to a depth of 6.25 m clay black clay contains organic materials and wood decomposition ( peat   ).

·        From a depth of 6.25 m to a depth of 8.10 m   clay clay dense dark and organic traces and materials.

·         From a depth of 8.10 m to a depth of 10.25 m clay clay gray stone containing organic materials and the effects of gravel stones. 

·          From a depth of 10.25 meters to a depth of 13.50 meters fine light brown sand contains a proportion of silt

·        From a depth of 13.50 m to a depth of 15.00 m (the end of the sill) medium sand to smooth brown and silt effects

 

Fourth: field tests of soil

    Conduct the standard on-site penetration test ( S PT) At different depths of the soil layers in order to identify their degree of density. The results of these tests were included in the tables attached to the longitudinal sectors of the sessions and the results are the number of pulses ( N = number of blows)) Per 30 cm last of the standard Spoon Spoon Samples ( Split-spoon sampler) Of soil

 

Fifth: Groundwater tests

1. Groundwater level

Table (1) gives the groundwater tables during the work of the plants and the changes that occurred in their levels after 24 hours from the completion of the work of the plants as the groundwater table was measured from the surface of the current ground.

Table (1) Groundwater levels

Number of sessions	Groundwater level
	Primary (meters)	Final (meters)
1 2	4.50 4.30	3.80 3.60

2. Chemical analysis of groundwater

Table (2) contains the results of the chemical analysis of the groundwater where samples were taken from this water during the work of the sessions. It has been tested to determine the proportions of salts, sulphates, chlorides 000 etc.

Table (2) Results of chemical analysis of groundwater

Figure Alheidugany pH	Contents of salts in ppm) Or mg / l
7.57	sulfate	Chlorides	Bicarbonate	Salts
	407	426	610	390

 

Sixth: Laboratory tests for soil samples

Laboratory tests were carried out on selected samples of the soil extracted from the probes according to the standard specifications (Egyptian Code of Soil Mechanics 1995) and using standard devices. These tests are:

1-   Liquidity and plasticity determination tests (Atterberg limits)  

2-   Tests for Determination of Natural Humidity ( Wc) And natural density of the soil ( Γ . _B) With standard loop

3-   Tests for Determination of Shear Resistance to Natural Soil using Standard Gaz

4-   Free Swelling Rate Tests

5-   The analysis of the sand soil and the angle of internal friction of the sand ranges from  (33-36) degrees.

The results of these tests were mentioned above in the tables attached to the plaster segments as in Figs. Figure (4) includes the results of the sand soil yield analysis.

Seventh: The nature of soil in situ

After studying the results and field and laboratory tests of the soil samples extracted from the probes as well as the study of the sectors of the concrete, it is clear that the soil in the site consists of:

1-  A layer of surface soil deposited from mud and mud, breaking of red bricks, coarse sand and gravel, with a depth of 2.50 -   3.25 m from the natural surface. 

2-  A layer of mud clay, medium, medium, cohesive, and the effects of gravel, giraffe, red, and  deep,  ranging between 3.00 -   3.10 m under the previous layer.

3-  A layer of mud clay built on the fracture of a 1.90 m thick clay trap interspersed with a layer of black mulberry mud containing organic matter and wood decomposition ( peat)) Thickness of 1.00 meters under the previous layer

4-    A layer of dark gray mud clay and organic matter was 1.85 meters deep under the previous layer

5- A layer of gray clay clay, which is based on organic materials, grits, and a fragment of  2.15 m below the previous layer.

6- A layer of soft, light brown sand that contains a percentage of silt at a depth of 3.25-4.00 m under the previous layer.

7-   A layer of medium-to-fine brown sand and moth effects with a depth of 1.5-2.75 m until the end of the session.

Based on this, we see that the soil layers at the site in question have no significant differences in the order and thickness of the layers from the natural surface until the end of the plants.  

Eighth: Final recommendations for the foundations

From the study and analysis of the results of the field and laboratory tests of the soil samples extracted from the plasters at the site of the construction of the economic housing development model e - average - Port Said Street - Kha city - Qalioubia governorate .

1-  The entire area of ​​the site shall be drilled to a depth of 4.50 m from the current surface level. The drilling should be carried out in accordance with the technical requirements, with the necessary precautions for the protection of the labor and the neighboring facilities with the   running out of runoff water.

2 - Apply the substrate layer of coarse grained sand and a final height of 1.00 m (one meter) and the emergence of not less than 50 cm from the outer limit of the concrete 0, taking into account that your blood soil replacement Mechanics on the layers of each layer 25 cm high with the water in the water Access to a blood sample of at least 95% of the maximum dry density of soil used in substitution medicine . 

3. The net allowable voltage of the soil ( q _a) Above the substrate substrate surface should not exceed 0.75 kg / cm 2 (7.5 tons / m2).

4. Base type: Surface foundations are used for flat-panel reinforced concrete. It is based on a 50 cm concrete concrete.

5. The concrete cover of the reinforcing steel used in the foundations shall not be less than 7 cm and the diameter of the reinforcing bars shall not be less than 12 mm (iron 52) or 13 mm (iron 37).

6 - Ordinary Portland cement is used in concrete foundations so that the concrete mix consists of the following:

a-     For regular concrete:    0.8 m3, + 0.4 m3 sand + 250 kg cement.

B-For reinforced concrete:    0.8 m3 Flatt + 0.4 m3 Sand + 350 kg Cement.

   In addition, the ratio of water to cement in the concrete mix should not exceed 0.45. Technical specifications should also be followed in the concrete manufacturing process for the foundations (mixing, casting, crushing and processing). The materials used in the concrete industry shall be free of impurities, foreign and organic substances and salts, Egyptian Code for the design and implementation of reinforced concrete installations for the year 2000.

7 - Isolate the visible parts of the concrete foundations and other concrete elements adjacent to the soil against the moisture by painting three sides of the orthogonal using hot oxidized bitumen or the use of insulation materials with high efficiency 0 so that the insulation after the end of the treatment period for concrete according to technical specifications for insulation works.

8 – The filling shall be carried around and inside the building with a fine coarse sand, with a fine thickness, according to the technical foundations of the landfill

 

    ·       Basic requirements when implementing the foundations

1-  The buildings adjacent to the site must be secured until the completion of the construction process in an appropriate engineering manner and under the supervision of an engineer specialized in these works

2-  Any old foundations should be removed from the site. In the case of old drainage tanks under the foundation level, they must be well cleaned and reached to the bottom and then be filled with replacement soil (from clean sand) with good blood.

3-   If soil is detected on the site, it is different from what is described in this report

God bless,,

                                                       MAS Engineering Consultancy

                 Dr. Saad Ibrahim El-Desouki Dr.            Naseem Ali Issa Prof. Mohamed Bassiouni

           Consultant No: 4136/1        Consultant No: 4387/1 Consultant No: 2457/1           

Figure (1): Crooky public location and places of the sessions.

Final ground water level G.WL ( - 3.80 m)

Q u.c. kg/cm2

F.S. %

P.L.%

L.L%

c b t/m3

Wn %

N/30 cm

Description of soil layers

sector The session

Depth (M)

Natural level of land

Zero 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Surface soil of mud and mud embankment, breaking of red bricks, gravel and coarse sand .

1.5 1.7

80

26

58

1.80

28

20 23

Clay is a light, coherent clay containing traces of grit and red.

28

66

Clay clay built contains a fractured pottery

30

84

Clay, clay, and organic materials

26

Light brown smooth sand contains a percentage of silt

Sand medium to smooth brown and silt effects

Longitudinal section of session 1 and results of field and laboratory tests

Project: Construction of an economic housing building model (e) Modified - Port Said Street - Kha City - Qalioubia Governorate.

Date: 10/2004

Final ground water level G.WL ( - 3.80 m)
Q u.c. kg/cm2	F.S. %	P.L.%		L.L%		c b t/m3		Wn %	N/30 cm	Description of soil layers	sector The session	Depth (M)
Natural level of land												Zero 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Surface soil from the fill of clay, mud, broken bricks and coarse sand
1.2 1.0	75	29	63		1.77		27		23	Clay Light brown Medium cohesion contains traces of the ceiling.
		27	88							Black mud clay contains organic matter and wood decomposition   peat
1.0 0.9	100	27	85		1.74		34		19	Clay, clay, clay, and organic matter
4.2 4.8	120	28	91		1.77		25			Clay, clay, sandstone containing organic materials and grits
									30	Light brown smooth sand contains a percentage of silt
										Sand medium to smooth brown and silt effects
Longitudinal section of Table (2) and results of field and laboratory tests
Project: Construction of an economic housing building model (e) Modified - Port Said Street - Kha City - Qalioubia Governorate.											Date: 10/2004

Figure (4): The results of soft sand yield analysis on the percentage of silt and sand

 Medium to soft and silt effects