Questionnaires For Material Engineer / Laboratory Technician / QC Engineer. (Questions Answers for Interview) ARAMCO

Questionnaires For Material Engineer / Laboratory Technician / QC Engineer. (Questions Answers for Interview) ARAMCO

   11:24 AM       feykhan

---

SAMPLE QUESTIONS:            

Back fill materials for loose soil with machine compactor (thickness)? 200mm
Maximum size of select fill materials?  50mm
Compressive strength of structural concrete sample? 28Mpa
Tensile strength of steel bars in aramco projects? 422Mpa
 The maximum concrete temperature. 32 Degrees C
 Thickness of plastic sheet use for curing? .15 mm
 Required slump for Saudi aramco projects? 100 +25mm 
 Asphalt compaction ratio of marshall density? 96%
 Min. diameter size of anchor bolt?  20mm               
Moisture content of concrete before compaction? Less than 4% 
Proper moisture of soil before coating? +- 3% of density
Drum revolution of concrete? 300 
 Min. no of days for water curing? 7 days
Max.height of concrete free fall in placement?] 1 meter
Aparatus for concrete moisture field test before coating? Elcometer probes
Q.C. – operational techniques and activities that are use to fulfill the requirements for quality.
Q.A. -  Implemented planned and systematic activities within the quality systems and demonstration as needed to provide adequate confidence that an entity will fulfill requirements for quality.

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Method of Statement consists:
1. Installation
2. Quality Control/Quality all
3. Manufacturer Representative attend during the installation
4. Certification of personal executing the work.


CONCRETE:
• TEMPERATURE MAX: 32 DEG. CENTEGRADE FOR STRUCTURAL
• : 30 DEG.  CENTEGRADE FOR MORTAR
• : 23 +-3 DEG. CENTEGRADE FOR GROUT

COMPRESSIVE STRENGTH:

• 4000 PSI or 28 Mpa : STRUCTURAL CONCRETE, RING WALLS @ 28 DAYS
• 2000 PSI or 14Mpa     : LEAN CONCRETE , MORTAR @28 DAYS
• 5000 PSI or 35Mpa     : WATER RETAINING STRUCTURE,GROUT @28 DAYS
• 500 PSI or 3.5 Mpa     : NON LOAD BEARING CMU
• 1500PSI or 10.5 Mpa  : LOAD BEARING CMU

WATER CEMENT RATIO:  
• 0.4 – STRUCTURAL CONCRETE
• 0.6  - NON STRUCTURAL CONCRETE

CEMENT CONTENT:
• STRUCTURAL CONCRETE- MINIMUM 350 Kg/m³
• -MAXIMUM 370Kg/ m³
• NON STRUCUTRAL CONCRETE-MINIMUM 250 Kg/ m³
• CEMENT TYPE: ABOVE GRADE/ NOT EXPOSE TO EARTH – OPC TYPE 1
• BELOW GRADE/EXPOSE TO EARTH- TYPE V SRC

======================================================================
WATER

• TDS MAX  USE FOR CONCRETE MIXED- 500 PPM
• TDS MAX USE FOR CURING CONCRETE-1000 PPM
• PH VALUE FOR CONCRETE MIXED: 6-8
• PH VALUE FOR CURING                   : 7-8
• MINIMUM DAYS FOR CURING OF CONCRETE : 7 DAYS
• TENSILE STRENGTH OF FBEC: 422 Mpa.
• TENSILE STRENGTH OF WWF: 420 Mpa.

==============================================================

Name Of Inspector:                                                                                             Date:                                                       Time:

Company  Name:

QC INSPECTOR WRITTEN TEST

Question # Description of question Marks

 A Select the one correct answer: A,  B,  C, or D.

1 Convert the concrete strength of 35MPa  in to PSI.

Ans A) 5000 PSI       B) 6000 PSI         C) 4000PSI           D) 2000 PSI

2 Saudi Aramco Standard for Excavation & Backfilling

Ans A)SAES-A-114   B) SAES-Q-001    C) SAES-M-100    D) SAES-A-113

3 Clear space of all sides excavation should be

Ans A) 1000mm           B) 600 MM                C) 800 MM          D) 300 MM

4 What is the maximum spacing for control joints in concrete paving slabs?

Ans A) 5.0M      B) 7.0 M           C) 6.0M         D) 8.0M

5 What is the maximum free fall height allowed  for concrete placement?

Ans A) 1.0M              B)2.0M      C) 1.5M        D) 0.80M

6 What is the maximum  limit of TDS in concrete mixing water?

Ans A)500 PPM      B) 1000 PPM       C) 10000 PPM      D) 100 PPM

7 The depth of the hole for Nuclear density method shall be no greater than deep

Ans   A) 150mm            B)450mm       C) 300mm       D) 250mm

8 At least one FDT test to be conducted while backfilling under foundations having area

Ans A) 70 Sq m           B)90 Sq m           C) 180 Sq m                  D)180 Sq m

9 What is the SAIC number for soil compaction testing?

Ans A)SAIC-A-1005        B) SAIC-A-1004               C) SAIC-A-1006             D) SAIC-1002

10 What is the maximum size of stone is allowed in select fill material?

Ans A) 50mm           B)100mm                   C)  62mm                     D)75mm

11 What is the maximum fill thickness of a layer allowed by SAES-A-114.

Ans A) 250mm                 B) 150mm                   C)200mm               D) 100mm

12 What is the minimum compaction percentage required  under foundations with static load more than 320KPafor cohesionless soils

Ans A) 95%           B) 90%                 C) 85%                        D) 70%

13 The water content of Aggregate base course material shall be maintained within…… of the optimum moisture content as per D-1557 or AASHTO T-180 during compaction.

Ans A)± 0.5%              B)  ± 1.5%                   C) ± 3%                         D)± 2%

14 Surface Coating of Concrete shall not be start till the moisture content of the strusture is less than…

Ans A) 3%                  B) 5%                          C)4%                              D) 1%

15 Saudi Aramco Specification 09-SAMSS-097 is required to refer for…….

Ans A)Concrete masonry blocks  B) PVC Pipes C) FBE Coated Reinforcement Rebar  D) Ready Mix Portland Cement Concrete

16 When  Aggregate base course finished surface checked by 3 m straight edge, what is the maximum  elevation deviation accepted?

Ans A)± 0mm            B)  ± 2mm                           C) ± 6mm                             D)± 3mm

17 What is the rate of prime coat testing?

Ans A) 10000M²               B) 20000M²                       C) 5000M²                     D) 6000M²

18 What is the minimum atmospheric temperature should be for prime coat application?

Ans A) 20 °C                         B) 5°C                            C)16°C                             D) 23°C

19 What is the prime coat temperature limits for MC-250?

Ans A)65°C to 105°C   B) 50°C to  80°C         C) 55°C  to 85°C              D) 35°C to 65°C

20 What is the maximum rate of application for tack coat?

Ans A) 0.65 L/M²         B)0.25 L/M²                C) 1.75 L/M²                   D) 0.5 L/M²

21 What is the temperature limits for hot mix asphalt?

Ans A) 90 °C  to 139 °C              B) 139 °C to 163 °C     C) 75 °C    to 125 °C     D) 125 °C  to 175 °C

22 How Much is the concrete cover required for permanently exposed surfaces to earth

Ans A) 20MM                     B) 100MM              C) 75MM                    D) 50MM

23 What is the minimum time for roof flood testing?

Ans A) 48 Hours                B) 24 Hours            C) 50 Hours              D) 10 Hours

24 The minimum required number of concrete test cylinders for strength tests shall be:Specify the Days for Testing

Ans 1) 3Nos                          2) 1 No.                         3) 4 nos.                           4) 6 Nos.

25 Water curing shall be continuous until the concrete has reached how many percentages of the Specific strength

Ans A) 50%                         B) 85%                       C)100%                      D) 70%

B Write the answer of below questions.

26 What is the passing percentage of select fill in # 200 sieve?

Ans

27 What ASTM number used for maximum Index Density and Unit Weight of Soils Using a Vibratory Table?

Ans

28 What is the Dune Sand?

Ans

29 What is the Hold Point ……..

Ans

30 Concrete ingredients are mixed by weight or by volume in a ready mix concrete batch plant?  

Ans

31 What is the Maximum cement content (Includes Micro Silica) for 4000PSI concrete

Ans

32 What is the SAES number for Saudi Aramco building codes

Ans

33 What is the SAES number for concrete foundations

Ans

34 SAITP stands for…………

Ans

35 What is the SAMSS number for Ready-Mixed Portland Cement Concrete?

Ans

36 Which ASTM standard for SAND CONE METHOD or Nuclear Method shall be used In-place density.

Ans

37 What type of  coating material required for concrete Buried/exposed Directly to the earth.

Ans

38 What is the SATIP number for  cast in place cement concrete?

Ans

39 What is the SAIC number for cast in place concrete form work inspection?

Ans

40 What is the level of inspection for contractor for SAIC-Q-1013

Ans

C Write the full name of following:

41 SAES:

42 ACI:

43 ASTM:

44 SAMSS:

45 AASHTO:

46 The concrete drop of height is more than 1 meter, which is not not as per compliance of the standard, Prepare NCR for the non compliance. ( as per SAES-Q-001, Sec 7.7)

C Write the answer of below questions.

36 What is the passing percentage of select fill in # 200 sieve?

Ans

37 What ASTM number used for maximum Index Density and Unit Weight of Soils Using a Vibratory Table?

Ans

38 What is the Dune Sand?

Ans

39 What is the Hold Point ……..

Ans

40 What is the SAES number for Saudi Aramco Security & General Purpose Fencing

Ans

41 What is the SAES number for Saudi Aramco building codes

Ans

42 What is the SAES number for concrete foundations

Ans

43 SAITP stands for…………

Ans

44 What is the SAMSS number for Ready-Mixed Portland Cement Concrete?

Ans

45 Which ASTM standard for SAND CONE METHOD or Nuclear Method shall be used In-place density.

Ans

46 What is the SATIP number for  cast in place cement concrete?

Ans

47 What is the SAIC number for cast in place concrete form work inspection?

Ans

48 What is the level of inspection for contractor for SAIC-Q-1013

Ans

C Write the full name of following:

49 SAES:

ACI:

ASTM:

SAMSS:

AASHTO:

50

The Fill placement is completed 1000mm in one time, Prepare NCR for the non compliance.