01129 1 Sample Quest'Ion

MYANMAR BOARD OF ENGINEER PROFESSIONAL ASSESSMENT WRITTEN EXAMINATION - PART II

MORNING SESSION ( 9:00 AM - 12 : 00 PM) CIVIL ENGINEERING (BREADTH)

Date: 23rd February 2014 Time allowed: 3 Hours

OPEN BOOK Answer All 25 questions (multiple-choice questions -MCQ and other types)

1. Earthwork volumes from thefill cross sections represent volume.

(a) compacted (b) natural in situ (c) bulk (d) compatible

2. Thetotal amount oflabour cost foranexcavation task is $ 6000.Three workers are excavated to the earth. The labour eost is $ 30 per hour and the working time is 8 hours per day. The

.:J time(days)available for the workers to complete this task is most nearly. (a) 12.5 (b) 8.33

(c) 5.0 (d) 3.0

3. Draw CPM arrow diagram for the following work. The CPM diagram is likely to be:

(B)(A)

3 2

(C) (D)

ID Activity Duration, Day Successor Remark 1 Excavation 2 2,3,4 2 Order Materials 1 4 3 Order Paint 7 7 4 Lean Concrete 2 5 5 Brick Work 4 6 6 Plastering 4 7 7 Painting and Finishing 2

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4. The strength of cylinders and eubes made from the same concrete differ from one another. There is no simple relationship between the strengths of the specimens of the two shapes. The ratio of the strengths ofthe eylinder to the cube is nearly at strengths of more than 100 MPa. (a) 0.7 (b) 0.8 (c) 0.9 (d) 1.0

5. Too much chloride content in water (eg; sea water) encourages of reinforcement.

(a) workability (b) corrosion (e) yield strengtb (d) tensile strength

6. Segregation may happen when concrete is _

(a) mixed (b) transported (e) placed or compacted (d) all ofthe above

7. In a layer of saturated clay, a cone penetration was conducted. At a depth of 10 m below the ground surface, qc was determined to be 1400 kN/m2

, Estimate the undrained shear strength of the elay. Given: unit weight of saturated clay ~ 18 kN/m3 and Nk ~ 15.

(a) 64.2 kN/m' (b) 76.3 kN/m' (c) 81.3 kN/m' (d) 110.9 kN/m'

8. A horizontaL stratified soiL deposit eonsists of three layers eaeh uniform in itself. The permeabilities of these layers are 8xlO-4 em/s, 52x10-4 em/s, and 6xlO-4 em/s, and their thicknesses are 7, 3,10 m respeetively. Find the effective average permeability of the deposit in the vertical direetion. The deposit is shown in Figure below.

(a) 5.6xI0" ern/a (b) 6.8xI0·4 emls (e) 7.7xI0·4 emls (d) 8.4xI0" cm/s

Arsflayer 7t ..""'" Jayer 3m

Third Jayer 10m

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9. The soils may be considered liquefiable, ifthe liquid limitof non-cohesive soil is less than A. 25 B. 35 C. 40 D. 55

10. A 1O-foot high gravity retaining wall is designed with no wall-soil friction. Calculate thewall width B to attain a FS = 1.5 against overturning.

(a) 3.0 feet (b) 3.5 feet (e) 4.0 feet (d) 4.5 feet T

• #=10'

o 11. What load combination produces the maximum downward deflection atpoint C.

Live load-! Live load-3

( Dead Load

iA B C D E

(a) Dead load+ Live load-2 (b) Dead load+ Live 10ad-1+ Live load-2+ Live load-3 (b) Dead load+ Live 10ad-1+ Live load-2 (d) Dead load+ Live load-I

12. Whieh of the shear force diagrams shown bestrepresents the loading on the beam shown in the

figure. 100 k-ft A B

10'-0" l' "

+

l-----=--"----t

Page 3 of 1

(b)

(e) I I 5k 5k

(d)

13. A simply supported truss is loaded as shown in figure. The load (kips) for member "a" and vertical reaction at support B are almostnearly.

50 kips

a 10'

B

~ 100 kips

(a) (b) (e) (d)

% Member a 25

50 0 16.66

10' l 10' ,y 10'

Reaction B a 67.33 83.33 50

l

14. A small water tank is supported on a slender coLumn as shown. Neglecting the weight of column, ehoose the correct natural period ofvibration.

.00. leg(a) 0.25 s (b) 0.333 s (e) 0.5 s •I =8e-3m(d) 0.625 s E E;2eSMP•..

~

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15. A plate is modeled for single footing-pad and meshed to be used in finite element application. FEA can handle rectangle, triangle and quadrilateral elements without mid-nodes. Colum is located at mid point of square footing pad. Choose correct mesh for footing

<, /"-.. 1/ "-../

1/ 1"-..I)

/"-.. / "-../

"­ .--­

> /\

I'" A B c

•

16. The pin on the frame at B has a diameter of 0.25 in. If the pin is subjected to double shear,

determine the average shear stress in the pin at B.

(a) 3.05 ksi

(b) 3.55 ksi

(e) 6.55 ksi

(d) 6.05 ksi

, '-----j

17. The piece of plastic is originally rectangular. Determine the average normal strain that oecurs

along the diagonal-DB. ')'< (a) 10.8(10·') mmlmm

(b) (11.8(10"') mmlmm

(e) 12.8(10·') mmlmm

(d) 13.8(10·') mmlmm 300mm :

1 --f ]'Imm

ID A x

----4l'OOmm--I--I 3mm

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18. Column load will be checked with allowable bearing stress onto footing base plate. Cylinder strength of concrete is 3000psi and column location is on the edge of mat footing. By using ACI318-(l995 to 2005) maximum uitimate column ioad will be nearest to

(a) 700 kip (b) 750 kip (c) 800 kip (d) 850 kip

•

14"x14" RCC Column

- " .

19. Stability index ofRCC frame is found between 0.05 and 0.1. How can man judge the condition of system?

Stability index

(a) Non-sway frame (b) Sway frame (c) Second order analysis is needed (d) Braced frame

20. For a rectangular channel of 3 m wide laid on 10 slope, if Q= 24 mJ/s, what is the critical depth Yc? (a) 1.26 m (b) 1.5 m (c) 1.87 m (d) 2.0 m

21. If 3 m wide rectangular channel laid on 10 slope is built of rubble cement (Manning's n =

0.020), what is theuniform-flow rate when the water depth is 2 m? (a) 6 mJls

(b) 18 mJls

(c) 36 mJls

(d) 40 mJls

22. Given a 6-br VB, 3-br VB can be derived by

(a) Superposition method (b) S- hydrograph method (c) AU the above two items (d)Basc flow separation method

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23. If rainfall intensity of 1.5 km2 catchment is 2.9 cm/hr and its runoffcoefficient is 0.3. runoffis obtained as

(a) 1.31 eumees (b) 1.31 eusec (c) 3.63 cumecs (d) 3.63 cusec

24. Design flow rate of 1000 gal/day/if for average flow rate is used to design a primary clarifier. Determine the diameter of a primary clarifier ataverage flow to treat a flow of 1 MGD.

(a) 29 (b) 36 (c) 46

(d) 56

,:J 25. BOD of a wastewater samplefor thefollowing data is obtained. as

Sample volume ~ 10 mL BOD incubation bottle volume ~ 300 mL Initial DO of diluted sample ~ 9 mg/L Final DO of diluted sample ~ 2 mg/L Initial DO of dilution water = 9 mg/L Final DO of dilution waler ~ 8 mg/L

(a) 72 mg/L (b) 188 mgIL (e) 241 mg/L (d) 181 mgIL

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PROFESSIONAL ASSESSMENT WRITTEN EXAMINATION - PART II

MORNING SESSION ( 9:00 AM - 12 : 00 )

CIVIL ENGINEERING (BREADTH)

Date: 1sr June 2014 Time allowed: 3 Hours

Answer AU 25 questions [multiple-choice questions -MCQ and other types)

,1. The resistance of a vertical earth face to deformation by a horizontal force is ealled

(a) earth pressure (b) active earth pressure

• (c) passive earth pressure (d) lateral pressure

[. / 2. Allowing for exeevation to be made 2' - 0" clear of the building Lines and to a total

,) depth of5'- 0" below the grade, the volume ofeach should be ealculated as follow C) (a) 12,800.00 Cu.ft

(b) 12,000.00 Cu.ft

(e) 11,980.00 Cu.ft

(d) \4080.00 Cu.ft

3. (a) A WBS dictionary is a document which.•. (a) describes technical terms used for scope management.

(b) describes the details for each eomponent in the WBS"

(c) translates essential WBS tenus for global project teams.

(d) helps translate functional into technical requirements.

(b) You have just taken over as manager of a project that will create many benefits for the performing organization, but you sense a high level of

) resistance in various stakeholders' right from the start. What is the most appropriate action to resolve the problem?

(a) Develop a responsibility assignment matrix (RAM) whieh clearly shows the responsibility of each stakeholder for the various project activities and who needs 10 be consulted and informed.

(b) Develop an organization diagram, which places each of the stakeholders at an appropriate position inside the project and allows for certain Jines of communieation while disallowing others.

(e) Schedule a meeting with these stakeholders to present the project, discuss and establish ground rules, ensure their involvement and identify initial personal and organizational issues.

(d) Do not talk to these stakeholders too much at this time; instead create faitsaccomplish, which will later force the stakeholders to support the project due to a laek of altematives for them.

Page 1 of 7

4. (a) What is the meaning of the aeronym CSOW? (a) A statement of work that is part of a contingency plan; it is commonly linked

with Contingency reserves.

(b) A statement of work that has been formally agreed upon by both parties and is therefore part of a contract.

(c) A statement of work that is currently valid; this contrasts with the scope baseline, a formerly valid SOW.

(d) A statement of work on project level that cumulates statements of work on cost account level

•(b) are not necessarily used to establish the cost baseline of a

project.

(a) Schedule activity or work package cost estimates

(b) The work breakdown structure and WBS dictionary o (c) The project schedule and resource calendars (d) The risk breakdown structure and the risk register

In the compressive strength test for ordinary Portland cement Type I, 7 days

strength should not be less than MPa. (ASTM standard) (a) 15 (b) 17

(c) 19 (d) 21

/ 6. In coarse aggregates for concrete, maximum limit of clay lump and friable particles

in mass percent of total sample is _

(a) 4 (b) 6 (c) 8 (d) 10

//7. The observed standard penetration test value in a deposit of fully submerged sand

was 45 at a depth of 6.5 m. The effective unit weight of the soil is 10 kN/m'. The other data given are (a) hammer efficiency = 0.6, (b) drill rod correction factor =

0.95, and (c) borehole correction factor = 1.05. Determine the corrected SPT value

(N,)".

(a) 54 (b) 56 (c) 58 (d) 60

Page 2 of 7

!/ r V 8. The anchorage force for a temporary scaffolding structure with 40 psf gross loading

as shown shall be­,

M-'il~ 'j0l' f. . ,

, Yl-~tl.e. sf"""',"", ? £/£ \0

, \0

=:'4F~ 4D f' }

(a) 480 pound .. (b) 160 pound (c) 320 pound

( ) (d) 380 pound , 9. The hydraulic conductivity of a soil sample was determined in a soil mechanics

laboratory by making use of a falling head penneameter. The data used and the test results obtained were as follows: diameter of sample = 2.36 in, height of sample =

5.91 in, diameter of stand pipe = 0.79 in, initial head ho = 17.72 in, final head hI =

11.81 in. Time elapsed = 1 min 45 sec. Determine the hydraulie conductivity in filday. - .

'..Ca) 16 (b) 18 Cc) 20 (d) 22

..... 10. A clay layer 3.66 m thick rests beneath a deposit of submerged sand 7.92 m thick. The top of the sand is located 3.05 m below the surface of a lake. The saturated unit

" ) weight of the sand is 19.62 kN/m' and of the clay is 18.36 kN/m'. Compute the effective vertical pressure at mid height of the clay layer.

.-, ,

., "

Page30f7

(a) 91.5 kN/m' (b) 93.3 kN/m' (c) 95.4 kN/m' (d) 97.3 kN/m'

(11J Vibration is likely not to he a problem for spread footing, when the relative density of the sand close to

(a) 0.5 (50%) (b) 0.75 (75%) (c) 0.9 (90%) (d) Unity (100%)

"iz. It is essential that the soil conditions are known withinthe significant depth of any foundation. Significant depth will be approximated by width of footing (B) and choose from followings for square footing.

(a) 1.5B (b) 2.0B (c) 2.5B (d) 3.0B

. 13. The correct reinforcing for a reinforced concrete wall is,

f) I'. ,~~

(A)

(a) Stem centered Ab) Outside stem face-centered (c) Backfill stem face-centered (d) None of the above

I

Page 4 of 7

"".'--"."--.,

./ ' .//

14. A simply supported truss is loaded as shown in figure. The member force "a" and vertical upward reaction at support B are almost nearly.

10'

B

00 kips 100 kips

IV' I Q' v 11 ' ,r , ;1

Member "a"(ki~s} Reaction B(kips} • (a) 100(!ension) 100

(b) 100(tension) 96.77

(c) JOO(compression) 96.77( ) (d) 100(compression) 100

15. A propped cantilever beam shown below carry 8 point load P. The magnitude of load P (with its plastic moment capacity Mp) that would cause collapse of the beam

p

A • cby plastic hinge formation is most nearly a. Mp/2 b. 3 Mp/4 c. 5 Mp/9 ) od. 1.2 Mp

"16. If the resultant force is required to aet along the positive u axis and have a

magnitude of 5 kN, determine the required magnitude ofFB and its direction 9.

y

(a) 2,83 kN and 62°

(b) 2,83 kN and 68°

(e) 3.83 kN and 62°

(d) 2.83 kN and 52°

F,,=3kN_-x A

B 30"

B~" Page5 of7

if ",• .J' 'i,,

/.

17. Determine the magnitude and direction measured counterclockwise from the

positive x axis of the resultant force of the three forces acting on the ring A. Take PI

~ 500N and e~20'.

(a) 2.03 kN and 87.9'

(b) 1.03 kN and 87.9'

(c) 1.03 kN and 77.9'

Cd) 3.03 kN and 77.9' •

/

.'

r , 600 N "

,--~~-x

18, 16 in x 20 in reinforced concrete rectangular column has to be designed, Conerete cylinder strength f cis 4000 psi and yield strength IY ofrebar is 60000 psi. Cover to rebar center is 2.5 in. Stressofcompression steel wheneolumnat the balanced condition is

-t!-~· }" I· rolll. .,

a. 48 ksi b. 56 ksi

,c. 60 ksi d. 66 ksi

" 19. Solid one-way slab is restingon rigid beams whieh have the centerto center distance of 14 ft. Slab is made ofnormal weight concrete and its reinforcing bar has yield strength of 50000 psi. One end of slabis not continuous. Minimum slab thickness compliantto ACI 318-2008 is nearest to

a. 6.0 in h. 6.5 in c. 7.0 in d. 7.5 in

Choose the correct statement in the following:

20. A a-hr unit hydrograph means (a) the duration of rainfall is 4 hours. (b) 1 cm depth of rainfall over the entire catchment. (c) that the stream flow is for4 hours. (d)a hydrograph resulting from the instantaneous application of 1 em rainfall excess over the basin.

Page 6 of7

F" /

/ 21, Evaporation from water surface

(a) is proportional to the deficit of vapour pressure (b) decreases with the exposed area (c) increases if there is salinity or pollution (d) decreases with wind velocity

22. Minor losses through valves, fittings, bends, contractions, ete" are commonly modeled as proportional to

(a) Total head (h) Static head (e). Velocity head (d) Pressure drop

( )

23. The underground formations, whieh serve as good aquifers are in the order: (3) consolidated formations of clays and shales (b) rock with no signs of weathering or fractures (c) roek with fissures and cracks

(d) sand stones

:)

24. If the total hardness and alkalinity ofa sample of water are 300 mg/l and 100 mg/l (eaeo] scale) respectively, t~ its carbonate and non carbonate hardness On units ofmg/l) will be respectively.

(a) 100 and 200 (b) 400 and 300 (c) 100 and 400 (d) 400 and zero

( )

25. Given the following data is respect of sedimentation tank volume of tank = 10m x 50 m x: 1.5m (deep)

Flow rate = 500 m/day The retention time would be;

<a) 3.0 hours (b) 2.4 hours (c) 2.8 hours (d) 1.8 hours

o

Page 7 of7

I

I

I

:1 . I '---,

I .L:'::-L-~~ GO'. 0"

, r s '0',

\ (J

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29 './. Sample Question

MYANMAR BOARD OF ENGINEER PROFESSIONAL ASSESSMENT WRITTEN EXAMINATION -PART II

EVENING SESSION (1:00 PM - 4: 00 PM) CIVIL ENGINEERING (CONSRUCTION) (DEPTH)

Date: 23rd February 2014 Time allowed: 3 Hours

OPEN BOOK Answer 20 out of 24 Questions

I. The figure shows a survey grid for a construction site excavation. The each grid interseetion is mentioned the depth of cut at that location. The total excavation volume ( sadrum ) is most nearly: ao e

(a) 32.9 sedrum -4.0' .s.o­,

-4.S'

-4.0' ,.

-3.5'

.(b) 40.8 sadrum (c) 57.5 sadrum .S.O· (d) 65.7 sadrum ,.

/" sr

,

,.

v·'·' -+ .2.5

2. In the figure, the radius ofa curve is 500 ft.The chord length L is 300 ft. Find the most nearly curve length "(ft) to provide the chainage ofthe c~rrve.

(a) 304.7 ft

(b) 307.5 ft 7(c) 310.2 ft (d) 312.9 ft

) U500' •

3. According to the grade profile and mass diagram for a roadway construetion project shown, whieh of the following is/are true :

LThe earthwork is balance (cut and fill). II. Filing from borrow pit is needed. III. Throw-away cutting as waste is

needed.

(a) 1 only (b) II only (c) III onLy

A Be o E F

Finished e Profile

Elevation ~--""';-+t--7'''---+-!----~"",,~

(d) II & 1II Mass diagram

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4. The figure shows a survey circular grid for a circular building eonstruction site excavation. The each grid intersection is the depth of cut at that location. The total excavation volume ( sadrum )

is most nearly: -9' '­

-10'-8'(A). 132.5 Sadrum

(B). 140..2 Sadrum

(C). 147.8 Sadrum

(D). 155.7 Sadrum ~' 1---1-12'

•

5. Prepare a preliminary estimate of a four storied office Building having a carpet area of 2000 sq.m for obtaining the administrative approval of the Government given the following data. It may be assumed that 30 % of the built up area will be taken by the corridors, verandahs lavatories, staircases, etc., and 10 % ofthe built up area will be occupied by walls. The total amount of nearly for

• Plinth area rate is - $ 950.00 per sq.m

• Extra due to deep foundation at site - I % of building cost.

• Extra for special Architectural treatment -0.5 % of building cost

• Extra for water supply and sanitary installations - 6 % of building cost

• Extra for Electric installations - 12.5 % ofbuilding cost

• Extra for other services - 5 % of building cost

• Contingencies - 2 %

• Supervision chargers - 80 %

(a) $ 4374000 i) (b) $ 3958000 (c) $ 3167000 (d) $ 1950000

6. Prepare a first running bill of a contractor for the construction of a building from the following data:­

i. Earthwork in exeavation in foundation - 35 cu.m@$ 180.00 per CU.m ii. Lime concrete in foundation- 14 cu.m @$ 73.00 per cu.m iii. R.C.C work(l:2:4) excluding steel but including centering and shuttering­

4 cu.m @ $ 290.00 per cu.rn IV. 2.5cm thick (1:1 :3) D.P.C- 20 sq.m@$9.00persq.m v. First class brick work in (1:6) in cement mortar in foundation work­

30 cu.m @ s 80.00 per cu.m vi. First class brick work in (1:3)cm in superstrocture­

20cu.m @ $ 84.00 per cu.m VB. Mild steel work in Reinforcement- 3 ton @ $ 200.00 per ton

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-9'

The details of materials issue to the contractor from government stockwith their issue rates are as follows:

Cement ­ 60 bags @ $ 10.50 per bag

1st class brick ­ 20,000 nos @ 90.0 per % nos

Mild steel bars ­ 3 tons @ 16.00 per ton

10 % of the bill amount shall have to be deducted.

(a) $ 3485.0 (b) $ 3916.5 (c) $ 7105.0 (d) s 6394.5

7. Calculate the cost of carriage of 45,000 bricks by bullock carts from a distance of7 km on earthen road. The cart can make three trips per dayand can carry 300 bricks per trip. The wages of bullock

CJ cart may be taken as $ 30.00 per day including driver. (a) $ 5000

(b) s 1500

(c) $ 1000 (d) $ 500

8. A 300m x 400m room has been prepared for painting. The walls are 10m high and will required two coats of paint on the new surface forproper coverage.If the one gal of paint covers 250 sq.m andcaleulate therequired paints are

(a) $ 90 (b) $60 (c) $56 (d) $ 45

A CPM table is listed below. The early start of Plumbing work is likely to be: (a) 8 (b)7 (c) 6 (d) 5

ID Activitv Duration. Dav Successor Remark I Excavation 2 3,4 2 Order Materials I 4,6 3 Order Brick 2 5 4 Lean Concrete 1 5 5 Brick Work 4 6

'6 Plumbing 2 7 7 Plastering 4 8 8 Painting and Finishing 2

Page :iof7

!

10. A pondof 50 feet by 10 feel and 3 feet depth has to be excavated manually. Rate of excavation is estimated as 100 eft per worker per day. Thework has to be eompleted in 3 days. Number of workers to be used daily is most likely to be:

(a) 3 (b) 4 (c) 5 (d) 6

11. A concrete eubieblock will beplaeed under the ground level as ananchorage block in the given figure. The concrete bloekshould resist a given tension force with safety factor 1.5. Find the size of thecubic concrete block. The density of concrete is 150 Ib/cu-ft. Friction factor between eonerete and soil is 0.5, and the passive force is not considered.

30 kips

'.' ...... "

(A). 5',5',5' Cube :). (B). 6\<6',6' Cube

..... ~ .': '.1',

45'(C). 8\<8',8' Cube ~:-:../~.:: '..,=--­(0). 9',9',9' Cube ...... . ' . '" ...... , .. :, .'. ,

~ .. 12. We require a mix with a mean 28 day compressive strength (measured on standard cylinders) of 35

MPa and a slump of 100 mm, ordinary Portland eement being used. The maximum size of well­shaped angular aggregate is 25 mm. Its bulk density is 1600 kg/m' and its specific gravity is 2.64. The available fine aggregate has a fineness of 2.6 and a speeific gravity of 2.58. , No air entrainment is required. Calculate the quantities of ingredients as a first trial. (Refer to Table 19.1, 14.5 and 14.6.) (Use American Method)

13. The following table lists the strength test data from 6 batches of concrete. For each batch, two cylinders were cast and tested al28 days. Required strength f,~ 4000 psi.

Batch # Cylinder # I Cylinder #2 Test average Averageof3

conseeutive tests

1 3900 3960

2 3950 4050

3 4040 4100

4 4100 4072

5 4062 3950

6 3850 3900

Which batch is not acceptable?

Page4 of7

(a) Batch # 1 (b) Batch # 2 (c) Batch # 5 (d) Batch # 6

14. Explain in detail about Vebe test which is derived to measure the workability of the eoncrete mix.

15. Flow table test is widely used for flowing concrete made with admixtures. (a) retarding (b) waterreducing (c) quick setting

(d) superplasticizng

16. Formworkfor 8-ft-high concrete wall is required in a construction work. The rate of concrete pouring is estimated to be 20 ft/hr for that 4' wide concrete wall.The eoncrete has long setting time due to usingadmixture, and so it can be considered as liquidtype up to 8-ft-high concreting.o The concrete density is 150 lb/cu-ft.

Find the axial force (kips) of strut 1 which is arranged at 4' C/C along the fonnwork wall. ,4',.:..;:..o..;~,{.;:~

.'

' •

~ " ,

"," \T:.o.I~ '" I ~.,', .'~A~ 4.: 1• • • •J '.~ ••

(A). 12.5 kips ~''':'''''~:-.t'.:~.s;.'!.... ~,.... ..".)'i.. r "_0/- S 8'

(B). 13.6 kips ~:'~).;~: : ~:?-.~~t "t­

(e). 15.2 kips o";t!:- ...".:0;. •• ~I.. ~·",:,"

(D). 17.8 kips ·:.,~::t'!~t·. I e •• .., .. .\

A bracket is anehored to a concrete using 4 bolts ( upper 2 bolts and lower 2 bolts ) into embedded insert as shown in the figure. Find the size of bolts to resist the acting load 110 kips with the strength of Fy ~ 40000 lb/sq-in,

(A). 112" 0 Bolt (D). )14' 0 Dolt

(C). 1" 0 Bol. (D). I 111' 0 Bolt

ItOkips

Page5 of7

1

18. A figure below shows a cantilevered portion of a bridgedeek. During eonstruerion, the forrnwork for concrete deck is support by the exterior girder and a system of uniformly spaced braces as shown. Themaximum allowable load of each brace is 4 kips. Both ends of the braces may be assumed as pins. The parapet handrail has a weight 0£300 Ib/ft. Find the maximum longitudinal spacing among the braces. The eoncrete weight is 150 Ib/eu-ft. Here, formwork weight can be neglected.

~--7··----f..,1

(A). 3'-9"

(B). 4'-0"

(C). 4'·3"

(D). 4'·6" S'

6'-9

19. Put appropriate colour (green, white, red, yellow) to be used in the following safety signs

Safety First ---------------------------------­Danger Signs ----------------------------.----­Caution Signs ---------------------------------­Directional Signs ----~---------p---------~---------

20. Match the following trade and PPE correctly.

(I) All workers (A) Glove (2) Bar bender (B) Goggle (3) Welder (C) Safety belt (4) Coneretor (D) Ear plug (5) Conerete breaker (E) Long boot (6) Seaffold installer (F) Shoes & Helmet ,')

21. Fill in the blank with suitable words given below at eachsentence.

(A) edge (8) briefing (C) proper (D) correet (E) educate (F) clean (l) --------------~aU the workers about safety awareness.

(2) Safety -------------- should be done everyday before stating the works.

(3) Keep working place always ------------.

(4) -----------~.--- use of mechanical and eleetrical appliances.

(5) Don't put things on ----------------------.

(6) Perform all works following ----------------- procedure.

Page 6 of7

22. Match the following hazard and risk control property. A. Good access B. Barricade C. Check on defeets before use D. Edge cleaning

Sr No.

Work activities Hazard Risk control

I Earthwork excavation Erosion of soil, Falling down

2 Electrical wiring Electrical Shock .

3 Carrying of material Slip and fall

4 Working atheight Material falling down

..

23. OSHA Incident rate is calculated as Incident Rate ~ N x 200,000 / EH where N ~ number of

injuries and il1ness requiring treatment beyond first aid. EH = total hours worked by all

employees during a certain period.

In a construction project, if there are 1,000,000 man-hours worked with the following safety

record, Incident Rate is approximately.

Incident Category No. of incidents Minor injuries (first aid only)

Medical- only injuries (no lost time, light duty only)

Medical injuries resulting in lightduty

Lost time injuries

20

4

5

5

(a) 6.80 (b) 2.80 (c) 2.00

() (d) 1.00

24. Fill inthe blanks withappropriate control action.

Sr No. Cook activity Hazard

Possibility Risk

control Additional

control

ego Roofing works Fal! down Safety Belt Safety net underneath

1. Delivery of concrete by AG Hit byreversing

2. Saw cutting forms Wound by cutting

3. Tools and equipment Wound & danger

(A) proper use (8) knowledged persons only (e) cover it while not using

(D) traffic marshal to assign (E) good maintenance (F) other workers stayaway

Page 7 of7

/ PROFESSIONAL ASSESSMENT WRITTEN EXAMINATION - PART II

EVENING SESSION (13:00 - 16 : 00 )

(CIVIL ENGINEERING - CONSTRUCTION) (DEPTH)

Date: 151 June 2014 Time allowed: 3 Hours

Answer 20 out of 24 questions (multiple-choice questions -MCQ and other types)

1. A segment of Yangon-Naypyitaw highway is to be filled borrow earth as an embankment of The embankment filling is to be compacted to a minimum of 90% of Modified Proetor maximum dtydensity.

A source of suitable borrow area hasbeen located near construction site for theembankment.

Assume that there is no seil loss in transporting the soil from borrow pitto construction site.

The following data apply;

Dryunitweightof sell in borrow pit 115.0 lb/cu-ft

Moisture content in borrowpit 19.0 %

Speeiflc gravity ofthe soil particles 2.65

Modified Proctor optimum moisture content 12.0 %

Modified Proctor maximum drydensity 120.0 lb/cu-ft

Each dump truck can carry 4.0 sadrum. The void ratio ofthe soil is 1.2 during transport. o

How many number of dump trucks will be needed for thisproject.

(a) 1706 trucks (b) 1796 trucks (c) 1886 trucks (d) 1976 trucks

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2. In a highway construction project, it is required to jom straights having a total defleetion angle 18.5 degree.The design curve radius is 450 meter, having cubic spiral

transition curves at each end. The design velocity is 140 kmJhr( kmph ) and the rate of change of radial acceleration is 0.3 meter/sq-sec/sec ( mleu-sec ). Chainageof I is

2500.24 meter.

Find the chainage ofT and Tl.

3 FOIDlIIh,e: o(.L = V I R ,

Sbift = L-/24R

Tangent length IT = (R+S ) tan( &12 )+LI2

(A). 2197.~6 meter

(B). 2230.22 rueter

(C). 2251.31 rueter

o (D). 2257.93 meter

:

3. According to the grade profile and mass diagram for a roadway construction project

shown, which of the following is/are true.

I. The earthwork is balance. ( ic. equal cut and fill ) II. Filling from borrow pit is needed. III. Throwaway cutting as waste is needed.

T

Transition Curve

u

Transition Curve I

I,

A

,1/Elevati01

(A). I only

(B). tI OI~y

(C). ttl only (D). tI & ttl

./'volume

B CD E F GH

<, <,

1/ -.

Page2 of8

-: ./

Finishe

I' /

--­ "----Orac Prom.

»<. /

Mass eli agram

4. Prepare the plinth area estimate for the timber building as shown in line plan. Thecost

of similar building whose dimensions are (10' x 10') + (20' xiS') + (15' xiS')

constructed in the same localitywas kyats800,OOO only, So the estimated cost for

proposed timber building are: (a) 1,630,000 kyats

(b) 1,360,000 kyats

(e) 5,000,000 kyats

(d) 3,160,000 kyats •

B.~ Roo ... Di .... i... Ko ..... (U',,20') ( 12' l< .25')

............. P"u.e

[;v,ol i 00 ... (11'" 12')

Line Pla'n

kilcb ... ( H'R 15')

o B.d Roo ... (15'" .20')

( c I c dim en sic n )

5. A Building requires 50 concrete beams that arc 10" wide x 20" exposed depth and 30' 0" long. The table indicates the amount of material required per 100 SFCA (sq.ft of contact area) ofconcrcte beams,

Number or "" Ry wood( ") lumber ( R -ft ) N ails ( I. )

1 .,.-..", ......"._" •.•._.............."" •..

2 ....··•··•··..··•·•····..3··....•..•.._·_···,,·· ............................................. .......

105 _.." .............­........" .......... ....

50 ....." ....._...." ......"................

40 ................................................

275 ................ ..........." ............

140 ..........._, ...........................

1,0 .."....._..........._..................

3 ......_.."."..." ................."'•..

2 ....................._..._..........

1.5 .. ......................._..............

C}

A supplier has quoted $ 1.0/ R.ft for lumber, $ 1.1 / sq.ft for ply wood, $ 1.2 /lb for

nails, If the forms will be usedthree times, The material cost is most nearly

(a) $ 6250 (b) $ 9738 (e) $ 5620 (d) s 7938

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6.Extract the detail of measurements for the Brick work with ( I : 3 ) cement mortar for

superstructure.

D = 4' - 0" x 7' - 0"

W= 4'-0"x4'-0"

The height of wall including 4" x 3" wallplate ~ 10' - 0"

6" x 9" R.C lintels are used. So the brick works arc

(a) 41.70 Cu.ft

(b) 36.75 Cu.ft, (c) 417.0Cu.ft

(d) 380.0 Cu.ft

(J 7. What are the major problems in using pumping for concreting works?

8. What are the advantages of using top-down approach in basement construction?

9. How you arrange development Construction operations methods.

10. What is most widely used scheduling technique is the critical path method

(CPM) for scheduling?

II. How do you calculation for Critical Path Method Scheduling?

C) 12. How to use Presenting Project Schedules?

13. Explain in detaii about the making, curing and testing of concrete specimens in cube mouid.

14. In concrete construction, what are the main factors in quality assurance and quality control process?

15. We require a mix with a mean 28 day compressive strength (measured on standard cylinders) of 35 MPa and a slump of 100 mm, ordinary Portland cement being used. The maximum size of well-shaped angular aggregate is 25 rom. Its bulk density is 1600 kg/m3 and its specific gravity is 2.64. The available fine aggregate has a fineness of 2.6 and a specific gravity of 2.58. , No air entrainment is required. Caleulate the quantities of ingredients as a first trial. (Refer to Table 14.5, 14.6 and 19.1.) (Use Ameriean Method)

Page aot s

16..The rigging shown will be used to lift 100'long prestressed-concrete girder. The weight of girder is 60 Ton. Find the size ofsling to lift the girder with safety factor

1.7.

I Breaking strength of standard steel wire ropes:

:(1).1" diameter rope =41.8 Ton :(2). 1 1/4" diameter rope = 64.6 Ton (1).1112" dianeterrope=92.0 TO~l

(1). 1 3/4" dleneter rope = 124.0 Ton

3 ' •

(A). I" diameter-rope 100' (B). 1 1/4" diameter-rope

(C). 11/2" diameter-rope

(D). 1 3/4" diameterrope o 17. The free standing tower crane shown will be supported on a 12'x12' square-based

concrete footing with thickness ( t ) feet to prevent overturning. The unit weight of

concrete is 150 lb/cu-ft. The given data as the foolowings ;

Pick Load Pp> 10 kips at ·Xp~60 ft Boom weight Pb» 5 kips at Xb ~ 15 ft

Counerweight Pc ~ 12 kips at Xc ~ 30 ft Mast weight Pm e v kips at Xm v O ft Windon boom Wb ~ 1 kips at Yb ~ 85 ft

Wind on mast wme 0.05 kip/ft over Ym ~ 100 ft

Find thikncss of square footing to provide adequade footing weight, neglecting sway C.) of the tower.

(A). 6.14 ft (B). 7.41 ft

n e wm(C). 8.23 ft (D). 9.76 ft

Pp Pm

Pages ors

] 8. In a low-cost housing project, the rigging shown will be used to lift 20'x12'xlO'

room-typemodule TIle weight of module is 18 Ton. Findthe size of sling to lift module with S.F ~ 1.6.

:Breaking strength of standard steel wire ropes:

(1).1/4" diameterrope ~3.39 Ton . (2).3/8" diameterrope ~ 5.31 Ton (3).1/2" diameterrope ~9.35 Ton (4). 3/4" diameter rope ~ 14.5 TOil

•

~i F' diameter rope

CJ :. "ciflmeter rope

(C). 12" diameter rope

(D). 3/4" diameter rope ~ J­20'~12~

19. Match the following hazard and risk control properly.

(A) Stay away from area (B) Barricade (C) Knowledge persons to use only

(D) Dispose timely (E) Cover while not in use

18 TOll

1 '

l' 10'

o Sr No.

Work activities Hazard Risk control

1 Earthwork excavation Erosion of soil, Falling down

2 Electrical wiring Electrical Shock

3 Lifting material Falling Down

4 Saw dustnear mle Fire accident

5 Use of circular saw Wound by eutting

Page 6 of8

' ,:'T

20. To obey the followings while using heavy equipment.

(A) Working area (B) Lift and move (C) Backhorn

(D) Distanee (E) Earthmoving equipment

(1) Heavy vehiele must have --------,------------------ while using back gear.

(2) Don't let unnecessary persons sitting on the -----------------------,

(3) Should keep safe -------------------- always while operating heavy equipment

(4) Keep your -------------------------- always clean and tidy,

(5) Don't ------------------- things over the people,

0)

21. }i'ill in the blanks with appropriate eontrol action.

(A)Inspection before use (B) keep fire fighting material

(C)traffiemarshall to assign (D) only trained persons to assign

(E)provide good ventilation

Sr No,

Work activity Hazard

Possibility Risk control Additional

control

eg. Roofingworks Fall down Safety Belt Safety net underneath

L Delivery of concrete by AG Hit byreversing Others workers stavawav

2, Storage of fuel Fire

3, Crane lifting Falling down ,

Page zot a

Problem data for Question No (22), (23), (24) A sheet pile is constructed to retain a median dense sand back fill for the conditions as shown below without an anchoring system. Height of wall (AB) is 12 ft. Assuming 0 is 12.6278 ft,

• r~115pcf

i -65pcf

+I-35°

., 22. Value of earth pressure atAl is

(J l. 230 psf

ll. 298 psf

11L 374 psf

IV. 423 psf

23. Value of earth pressure at J is

i. 3569 psf

ii. 5498 psf

111. 7900 psf

IV. 8500 psf

24. Location of 0] from A point is

1. 0.65 ft

,.')­ 11. 1.12 ft

lll. 1.68 ft

iv. 2.1 ft

**** ••••••••••••••••••••••••••••••••

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