Skip to document
Welcome to StudocuSign in to access the best study resources
Guest user
0followers
Upload
HomeMy LibraryAsk AI
  • You don't have any recent items yet.
My Library
  • You don't have any courses yet.
  • You don't have any books yet.
  • You don't have any Studylists yet.

Docshare - ......

......
Course

Civil Engineering

999+ Documents
Students shared 2960 documents in this course
Academic year: 2020/2021
Uploaded by:
Anonymous Student
This document has been uploaded by a student, just like you, who decided to remain anonymous.
Technische Universiteit Delft

Recommended for you

Comments

Please sign in or register to post comments.

Students also viewed

Related documents

Preview text

MATERIALS ENGINEER

ACCREDITATION

EXAMINATION

REVIEWER

SCHEDULE OF

MINIMUM TEST

REQUIREMENTS

(FREQUENCY)

Schedule of Minimum Testing Requirements Governing Items of Work of the DPWH Specifications for Highways, Bridges and Airports (2004 Edition)

PART C - EARTHWORKS

ITEM 100 – CLEARING AND GRUBBING

  • This item shall consist of clearing, grubbing, removing and disposing all vegetation and debris as designated in the contract. Tests: None

ITEM 101 – REMOVAL OF STRUCTURES AND OBSTRUCTIONS

  • This item shall consist of the removal wholly or in part, and satisfactory disposal of all buildings, fences, structures, old pavements abandoned pipelines, and any other obstruction which are not designated or permitted to remain. Tests: None

ITEM 102 – EXCAVATION

  • This item shall consist of roadway, drainage and borrow excavation and the disposal of materials. Tests: Same as for Items 103, 104 and 105, whichever is applicable

ITEM 103 – STRUCTURE EXCAVATION

  • This item shall consist of the necessary excavation for foundation of bridges, culverts, under-drains, and other structures not otherwise provided in the specifications. If the excavated materials are washed, the volume involved shall be reported so that quality control requirements may be adjusted accordingly (submit Project Engineer Certificate of Waste). If the excavated materials are incorporated into the work: Tests: For every 1,500 m 3 or fraction thereof: 1 – G, Grading Test 1 – P, Plasticity Test (LL, PL, PI) 1 – C, Laboratory Compaction Test For every 150 mm in uncompacted depth: 1 – D, Field Density

ITEM 202 – CRUSHED AGGREGATE BASE COURSE

  • This item shall consist of furnishing, placing, and compacting crushed gravel, crushed stone or crush rock on a prepared sub-grade. Tests: Same as for Item 201 For every 1,500m 3 or fraction thereof: 1 – F, Fractured face

ITEM 203 – LIME STABILIZED ROAD MIX BASE COURSE * This item shall consist of a foundation for surface course composed of soil aggregate, lime and water in proper proportions. Amount of lime to be added: 3 – 12 mass percent of dry soil aggregates test Tests: A. SOIL AGGREGATE For every 300 m 3 or fraction thereof: 1 – G, Grading Test 1 – P, Plasticity Test (LL, PL, PI) For every1,500 m 3 or fraction thereof: 1 – Q, Quality Test (Grading, Plasticity and Abrasion) B. MIX For every 300 m 3 or fraction thereof: 1 – C, Laboratory Compaction Test 1 – UC, Unconfined Compaction Test C. COMPACTED BASE COURSE For every layer of 150 mm compacted depth: 1 – D, Field Density Test for every 150 m or fraction thereof 1 – T, Thickness determination fro every 150 m or fraction thereof D. HYDRATED LIME For every 100T or fraction thereof: 1 – Q, Quality Test

ITEM 204 – PORTLAND CEMENT STABILIZED ROAD MIX BASE COURSE

  • This item shall consist of a foundation for surface course, composed of soil aggregate, Portland cement and water in proper proportions. Amount of cement to be added: 6 to 10 mass of dry soil aggregate Tests: A. SOIL AGGREGATE Same as for Item 203 B. CEMENT 1 – Q, Quality Test for every 2,000 bags or fraction thereof C. WATER 1 – Q, Quality Test/Project Engineer’s Certificate D. MIX For every 300 m 3 or fraction thereof: 1 – C, Laboratory Compaction Test 1 – UC, Unconfined Compaction Test 1 – CBR, California Bearing Ratio E. COMPACTED BASE COURSE For every layer of 150 mm compacted depth: 1 – D, Field Density Test for every 150 m or fraction thereof 1 – T, Thickness Determination for every 150 m or fraction thereof

ITEM 205 – ASPHALT STABILIZED ROAD MIX BASE COURSE

  • This item shall consist of a foundation for surface course, composed of soil aggregate and asphaltic material in proper proportions. Amount of asphalt to be added: 4 – 7 mass of dry soil aggregate Tests: A. SOIL AGGREGATE Same as for Item 203 B. EMULSIFIED ASPHALT 1 – Q, Quality Test for every 40T of 200 drums or fraction therof

C. MIX

Same as for Item 203 C. COMPACTED BASE COURSE Same as for Item 203

ITEM 206 – PORTLAND CEMENT STABILIZED TREATED PLANT MIX BASE COURSE

  • This item shall consist of a foundation for surface course composed of aggregate Portland cement and water in proper proportion. Amount of cement to be added: 6 to 10 mass of dry soil aggregate Tests: A. SOIL AGGREGATE Same as for Item 203 B. PORTLAND CEMENT For every 2,000 bags or fraction thereof: 1 – Q, Quality Test C. MIX Same as for Item 204 D. WATER 1 – Q, Quality Test/Project Engineer’s Certificate E. COMPACTED BASE COURSE For every layer of 150 mm compacted depth: 1 – D, Field Density Test for every 150 m or fraction thereof 1 – T, Thickness Determination for every 150 m or fraction thereof

ITEM 207 – AGGREGATE STOCKPILE

  • This item shall furnishing and placing aggregate in stockpiles at locations. Tests: Same as the specified Item No. of the Specification

PART E – SURFACE COURSES

ITEM 300 – AGGREGATE SURFACE COURSE

  • This item shall consist of wearing of top course composed of gravel or crushed aggregate and other binder material. Tests: For every 300 m 3 or fraction thereof: 1 – G, Grading Test 1 – P, Plasticity Test (LL, PL, PI) For every 1,500 m 3 or fraction thereof: 1 – C, Laboratory Compaction Test 1 – Q, Quality Test (Grading, Plasticity and Abrasion) For every layer of 150 mm of compacted depth based on the result of compaction test trials: At least one group of three in – situ density tests for each 500 m 2 or fraction thereof For crushed gravel or crushed stone 1,500 m 3 or fraction thereof: 1 – F, Fractured face

ITEM 301 – BITUMINOUS PRIME COAT

  • This item shall consist of preparing and treating an aggregate base course. Quantity: 1 to 2 L/m 2 Test: 1 – Q, Quality Test for every 40T or 200 drums

ITEM 302 – BITUMINOUS TACKCOAT

  • This item shall consist of preparing and treating an existing bituminous or cement concrete with bituminous material. Quantity: 0 to 0 L/m 2 Test: 1 – Q, Quality Test for every 40T or 200 drums

Tests: Same as for Item 301 C. MIX Tests: For every 75 m 3 /130T or fraction thereof: 1 – G, Grading Test 1 – Ext, Stability Test 1 – C, Laboratory Compaction Test D. HYDRATED LIME Tests: For every 100T or fraction thereof: 1 – Q, Quality Test E. COMPACTED PAVEMENT Tests: For each full day’s operation: D & T (Density & Thickness Test), at least one (1) but not more than three (3) samples shall be taken

ITEM 307 – BITUMINOUS PLANT – MIX SURFACE COURSE – GENERAL

  • This item includes general requirements that are applicable to all type of bituminous surface courses irrespective of gradation of aggregate or kind and amount of bituminous material. A. AGGREGATE Tests: For every 75 m 3 /200T or fraction thereof: 1 – G & P, Grading & Plasticity Tests For every 1,500m 3 or fraction thereof: 1 – Q, Quality Test (Grading, Plasticity and Abrasion, Stripping and Bulk specific gravity) 1 – F, Fractured face B. BITUMINOUS MATERIALS Quantity: 5 to 8 mass percent of total dry aggregates Tests: 1 – Q, Quality Test for each 40T or 200 drums or fraction thereof C. MIX Tests: For every 75 m 3 /130T or fraction thereof: 1 – G. Grading Test 1 – Ext, Stability Test 1 – C, Laboratory Compaction Test D. HYDRATED LIME Tests: For every 100T or fraction thereof: 1 – Q, Quality Test E. MINERAL FILLER Tests: For every 75 m 3 or fraction thereof: 1 – G & P, Grading & Plasticity Tests (LL, PL, PI) F. COMPACTED PAVEMENT Tests: For each full day’s operation: D & T (Density & Thickness Test), at least one (1) but not more than three (3) samples shall be taken

ITEM 308 – BITUMINOUS PLANT – MIX SURFACE COURSE – COLD LAID

  • This item shall consist of constructing Bituminous Surface Course (Asphalt Cold Mix) prepared in central mixing plant, laid cold on a prepared base. A Tests: Same as for Item 307 B. BITUMINOUS MATERIALS Quantity: Using cut – back asphalt -- 4 to 7 mass % of total dry aggregate

Using emulsified asphalt – 6 to 10 mass % of total dry aggregate Tests: 1 – Q, Quality Test for each 40T or 200 drums fraction thereof C. MIX Tests: Same as for Item 307 D. HYDRATED LIME Tests: Same as for Item 307 E. MINERAL FILLER Tests: For every 75 m 3 or fraction thereof: 1 – G & P, Grading & Plasticity Tests (LL, PL, PI) F. COMPACTED PAVEMENT Tests: Same as for Item 307

ITEM 309 – BITUMINOUS PLANT – MIX (STOCKPILE MAINTENANCE MIXTURE)

  • This item shall consist of a bituminous stockpile maintenance mixture composed of aggregate, mineral filler, hydrated lime and bituminous material mixed in a central plant. A. AGGREGATE Tests: Same as for Item 307 B. BITUMINOUS MATERIALS Quantity: 4 to 10 mass percent of total mix Tests: 1 – Q, Quality Test for each 40T or 200 drums fraction thereof C. MIX Tests: Same as for Item 307 D. HYDRATED LIME Tests: Same as for Item 307 E. MINERAL FILLER Tests: Same as for Item 307 F. COMPACTED PAVEMENT Tests: Same as for Item 307

ITEM 310 – BITUMINOUS CONCRETE SURFACE COURSE – HOT LAID

  • This item shall consist of constructing a bituminous concrete surface course composed of aggregate, mineral filler and bituminous material mixed in a central plant, constructed and laid hot on prepared base.

A. AGGREGATES Tests: Same as for Item 307 B. BITUMINOUS MATERIALS Quantity: 5 to 8 mass percent of total mix Tests: 1 – Q, Quality Test for each 40T or 200 drums fraction thereof C. MIX Tests: Same as for Item 307 D. HYDRATED LIME Tests: Same as for Item 307 E. MINERAL FILLER Tests: Same as for Item 307

Test: Flexural Strength Test on concrete beam samples: 1 – Set consisting of 3 beam samples shall represent a 330 m 2 of pavement, 230 mm depth or fraction thereof placed each day Volume of concrete not more than 75 m 3 I. COMPLETED PAVEMENT Test: Thickness determination by concrete core drilling on a lot basis Five (5) holes per km per lane or five (5) holes per 500 m when two (2) lanes are poured concurrently

PART F – BRIDGE CONSTRUCTION

ITEM 400 - PILING

  • This item shall consist of piling, furnished, driven or placed, cut and spliced. A. TIMBER PILES Test: 1 – Inspection Report for each size and shipment of timber B. CONCRETE PILES a.) Concrete Test: Same as for Item 405 b.) Reinforcing Steel Test: Same as for Item 404 C. STRUCTURAL PILES Tests: 1 – IR, inspection Report 1 – Q, Quality Test or Mill Test Certificate

ITEM 401 – RAILINGS

  • This item shall consist of furnishing, fabricating or placing, for bridges and other structures of the material of combination of materials. A. CONCRETE Test: Same as for Item 405, Class C B. REINFORCING STEEL Test: Same as for Item 404

ITEM 402 – TIMBER STRUCTURES

  • This item shall consist of construction of timber structures to the dimensions, lines and grades as shown on the plans. Tests: 1 – Q, Quality Test or Manufacturer’s Certificate for each type of material used 1 – IR, Inspection Report for each type and shipment of timber

ITEM 403 – METAL STRUCTURES

  • This work shall consist of steel structures portions of composite structures, constructed in reasonably close conformity with the lines, grades and dimension. Tests: 1 – Q, Quality Test or Manufacturer’s Certificate for each type of material used 1 – IR, Inspection Report for each type and shipment of metal

ITEM 404 – REINFORCING STEEL

  • This item shall consist of furnishing, bending, fabricating and placing of steel reinforcement of the type, size, shape and grade required. A. BAR REINFORCEMENT FOR CONCRETE Test: For every 10,000 kg or fraction thereof for each size: 1 – Q, Quality Test (Bending, Tension and Quality Analysis) B. WIRE AND WIRE MESH

Test: 1 – Q, Quality Test

ITEM 405 – STRUCTURAL CONCRETE

  • This item shall consist of furnishing, bending, and placing and finishing concrete in all structures except pavements. A. CEMENT Quantity: (40 kg/bag) Class A 9 bags/m 3 of concrete – 3,000 psi/20 MPa Class B 8 bags/m 3 of concrete – 2,400 psi/16 MPa Class C 9 bags/m 3 of concrete – 3,000 psi/20 MPa Class P 11 bags/m 3 of concrete – 5,000 psi/20 MPa Class Seal 9 bags/m 3 of concrete – 3,000 psi/20 MPa Test: For every 2,000 bags or fraction thereof: 1 – Q, Quality Test B. FINE AGGREGATES Quantity: ROUNDED ANGULAR/CRUSHED Class A 0 0 m 2 /m 3 of concrete Class B 0 0 m 2 /m 3 of concrete Class C 0 0 m 2 /m 3 of concrete Class P 0 0 m 2 /m 3 of concrete

Test: For every 1,500 m 3 or fraction thereof: a.) For a source not yet tested or failed in previous quality test: 1 – Q, Quality Test (Grading, Elutriation – wash, Bulk Specific Gravity, Absorption, Mortar Strength, Soundness, Organic Impurities, Unit Weight, % clay lumps and % shale) b.) For a source previously tested and passed quality test: 1 – Q, Quality Test (Grading, Elutriation – wash, Bulk Specific Gravity, Absorption, Mortar Strength) For every 75 m 3 or fraction thereof: 1 – G, Grading Test C. COARSE AGGREGATES Quantity: ROUNDED ANGULAR/CRUSHED Class A 0 0 m 2 /m 3 of concrete Class B 0 0 m 2 /m 3 of concrete Class C 0 0 m 2 /m 3 of concrete Class P 0 0 m 2 /m 3 of concrete

Test: For every 1,500 m 3 or fraction thereof: a.) For a source not yet tested or failed in previous quality test: 1 – Q, Quality Test (Grading, Bulk Specific Gravity, Absorption, Abrasion, Soundness and Unit Weight) b.) For a source previously tested and passed quality test: 1 – Q, Quality Test (Grading, Bulk Specific Gravity, Absorption and Abrasion) For every 75 m 3 or fraction thereof: 1 – G, Grading Test D. WATER Tests: 1 – Certificate from Project Engineer or 1 – Q, Quality Test if source is questionable E. PRE – MOLDED FILLER FOR EXPANSION JOINTS Test: 1 – Q, Quality Test on each thickness of filler for each shipment F. STEEL REINFORCEMENT Test: For every 10,000 kg or fraction thereof for each size: 1 – Q, Quality Test (Bending, Tension and Quality Analysis)

PART G – DRAINAGE AND SLOPE PROTECTION STRUCTURES

ITEM 500 – PIPE CULVERTS AND STORMDRAINS

  • This item shall consist of the construction or reconstruction of pipe culverts and storm drains. A. PIPES Test: 1 – Q, Quality Test for one (1) pipe for every 50 pieces (Strength, Absorption and Dimension) Alternative Requirements:
  1. Compressive Strength for one (1) set consisting of three (3) concrete cylinder samples for not more than twenty – five (25) pipe cast in the field
  2. Inspection Report for each size for not more than twenty – five (25) pipes cast in the field

B. MORTAR AND JOINT FILLER Cement, fine aggregates and water: Test: Same as for Item 405

ITEM 501 – UNDERDRAINS

  • This item shall consist of constructing under drains, using pipe and granular filter materials, under drain pipe outlets, and blind drain using granular materials. A. CONCRETE PIPE (NON – REINFORCED) Test: Quality Test for 0% of the number of pipes for each size but not less than two (2) for Strength, Absorption and Dimension Alternative requirements:
  1. Compressive Strength for one (1) set consisting of three (3) concrete cylinder samples for not more than twenty – five (25) pipe cast in the field
  2. Inspection Report for each size for not more than twenty – five (25) pipes cast in the field B. CLAY PIPE Test: Quality Test for one (1) pipe for every 200 pieces of each size, with a minimum number of two (2) specimens for Strength, Absorption and Dimension

ITEM 502 – MANHOLES, INLETS AND CATCHBASINS

  • This item shall consist of the construction, reconstruction or adjustment of manholes, inlets, and catch basins. A. CONCRETE Test: Same as for Item 405, Class A B. LIDS, CAST IRON FRAMES AND GRATING Test: Inspection Report

ITEM 503 – DRAINAGE STEEL GRATING WITH FRAME

  • The steel frame clear openings of drainage grates shall be 15 mm larger than nominal sizes of industry standard sized pits.

ITEM 504 – CLEANING AND RECONDITIONING OF EXISTING DRAINAGE STRUCTURES

  • This item shall consist of cleaning and reconditioning existing pipes and appurtenant structures. Test: Inspection Report

ITEM 505 – RIPRAP AND GROUTED RIPRAP

  • This item shall consist of the furnishing and placing riprap with or without grout as the case maybe, with or without filter backing. Test: Same as for Item 506 (Cement – Aggregate ratio = 1:3)

ITEM 506 – STONE MASONRY

  • This item shall consist of stone masonry of minor structures, in headwalls for culverts, in retaining walls at the toes of slopes. A. CEMENT Quantity: 2 bags/m 3 of concrete Test: For every 2,000 bags or fraction thereof: 1 – Q, Quality Test (Cement – Aggregate ratio = 1:2) B. FINE AGGREGATE Quantity: 0 m 2 /m 3 of concrete Test: For every 1,500 m 3 or fraction thereof: 1 – Q, Quality Test (same as for Item 405) For every 75 m 3 or fraction thereof: 1 – G, Grading Test C. STONE Test: Inspection Report D. WATER Test: 1 – Certificate from Project Engineer or 1 – Q, Quality Test if source is questionable

ITEM 507 – RUBBLE CONCRETE

  • This item shall consist of construction of rubble concrete.

ITEM 508 – HAND – LAID ROCK EMBANKMENT

  • This item shall consist of hand-laid rock embankment. Test: Inspection Report

ITEM 509 – SHEET PILES

  • This item shall consist of furnishing, driving cutting off of sheet pile. A. TIMBER SHEET PILES Test: Inspection Report B. CONCRETE SHEET PILES Test: Same as for Item 400 C. STEEL SHEET PILES Test: Same as for Item 403

ITEM 510 – CONCRETE SLOPE PROTECTION

  • This item shall consist of furnishing and placing of concrete slope protection including all necessary excavation, a bed course and reinforced concrete to the required thickness and extent to protect slope against erosion. A. BED COURSE Test: Same as for Item 200 B. STEEL REINFORCEMENT Test: Same as for Item 404 C. CONCRETE Test: Same as for Item 405 ITEM 511 – GABIONS
  • This item shall consist of furnishing, forming wire mesh baskets, and placing rocks installed at the location designated. Test: 1 – Q, Quality Test for each shipment

ITEM 604 – FENCING

  • This item shall consist of furnishing and constructing of post and barb wire or chain link fences. A. BARB WIRE, CHAIN LINK FABRIC Test: 1 – Q, Quality Test B. CONCRETE POSTS Test: Same as for Item 405 C. STEEL REINFORCEMENT Test: Same as for Item 404

ITEM 605 – ROAD SIGN

  • This item shall consist of furnishing and installing road signs. Test: Inspection Report

ITEM 606 – PAVEMENT MARKINGS

  • This item shall consist of placing markings of the finished pavement. Test: Same as for Item 411

ITEM 607 – REFLECTIVE PAVEMENT STUDS

  • This item shall consist of furnishing and installing reflective pavement studs on the surface of the pavement. Test: Inspection Report

ITEM 608 – TOPSOIL

  • This consists of topsoil furnished, transported and spread, or topsoil removed from designated areas, haul and spread. Test: Inspection Report

ITEM 609 – SPRIGGING

  • This item consists of planting sprigs of living grass plants. Test: Inspection Report

ITEM 610 – SODDING

  • This item shall consist of furnishing and laying of live sod on the shoulders, slopes, ditches, or other locations as designated, construction of sod ditch checks or similar appurtenances. Test: Inspection Report

ITEM 611 – TREE PLANTING

  • This item shall consist of furnishing and planting deciduous shade, flowering trees evergreen trees less than 150 mm diameter on the areas. Test: Inspection Report

ITEM 612 – REFLECTIVE THERMOPLASTIC STRIPPING

  • This item shall be applied to the road surface in a molten state by mechanical means with surface application glass beads at a rate not less than 350g/L.

PART I – MATERIALS DETAILS

ITEM 700 – HYDRATED CEMENT

Test: Same as for Item 405

ITEM 701 – CONSTRUCTION LIME (HYDRATED)

Test: 1 – Q, Quality Test for every 100T or fraction thereof

ITEM 702 – BITUMINOUS MATERIALS Test: Same as for Items 301, 302, 303, 306, 307, 308, 309 and 310

ITEM 703 – AGGREGATES Test: Same as for item of work in the Bill of Quantities

ITEM 703A – MINERAL FILLER

  • This item shall consist of finely divided material mineral matter such as rock dust, slug dust, hydrated lime, hydraulic cement, fly ash or other suitable mineral matter. Test: Same as for Item 307

ITEM 704 – MASONRY UNITS Test: 1 – Q, Quality Test for every 10,000 units or fraction thereof

ITEM 705 – JOINT MATERIALS Test: Same as for Items 311 and 500

ITEM 706 – CONCRETE, CLAY, PLASTIC AND FIBER PIPES A. CONCRETE Test: Same as for Item 500 B. CLAY AND OTHER TYPE OF PIPES Test: Refer to applicable requirements of AASHTO Test and Specs

ITEM 707 – METAL PIPE Test: Same as for Item 400

ITEM 708 – CONCRETE CURING MATERIALS AND ADMIXTURE

  • This item specifies the classification, sampling, testing, packing and marking of concrete admixtures. Test: 1 – Q, Quality Test for each shipment

ITEM 709 – PAINTS Test: Same as for Item 411

ITEM 710 – REINFORCING STEEL AND WIRE ROPE A. REINFORCING STEEL Test: Same as for Item 404 B ROPE Test: Same as for Item 406

ITEM 711 – FENCE AND GUARDRAIL A. FENCE Test: Same as for Item 604 B. GUARDRAIL Test: Same as for Item 603

TABLES

MINIMUM REQUIREMENTS FOR SUBMISSION OF SAMPLES

MATERIALS MNIMUM TESTING

REQUIREMENTS

MINIMUM

QUANTITY/VOLUME OF

MATERIALS FOR EACH

SAMPLE SUBMITTED

1. Cement 1 sample per 2000 bags 10 kg

2. Asphaltic material 1 sample per 40T or 200

drums

5L

3. Aspahlt mix 1 sample per 130T 20 kg

4. Aggregates

a. coarse aggregate

b. fine aggregate

1 sample per 1,500 m 3

70 kg

50 kg

5. Soil aggregates

a. Classification

b. Routinary tests

c. MDR test and CBR

1 sample per 1,500 m 3

20 kg

50 kg

50 kg

6. Non – Reinforced Concrete Pipes 2 pipes min./0% of no. of

pipes

2 pipes

7. Reinforced Concrete Pipes 1 sample per 50 pipes or 2% of # of pipes 1 pipe (1 m length)

8 pipe (galvanized) 1 sample per 500 lengths 2 pcs Of 100 mm long taken from both ends w/ thread

9. Concrete hollow blocks (CHB)

a. strength

b. moisture content

1 sample per 10,000 units

3 units

3 units

10. Steel bar 1 sample per 10T 1 m

11. Steel sheet (galvanized) 1 sample per 100 sheets 3 pcs 60mm x 60mm

12. Wire strand 1 sample per 20T 2 m

13. Gabion 1m x 2m

14. Paints 1 sample per 100 cans 1 - 4L can

15. Joint – filler (pre – molded) 1 – 400mm x 400mm

16. Curing compound 1L

17. Concrete cylinder 1 sample per 75 m 3 1 set (3 cylinders)

18. Concrete beam 1 sample per 75 m 3 or 1 day

pouring 1 set (3 cylinders)

19. Concrete core 5 holes for every km/lane

20. Asphalt core 1 core for every 100m

21. Water

a. Chemical analysis

b. Sediment load analysis

500 ml

500 ml

22. Structural steel/sheet 1 sample per 50T Reduced section as prescribed

23. Hydrated lime 1 sample per 100T

COMPOSITION AND STRENGTH OF CONCRETE FOR USE IN STRUCTURE

Class of

concrete

Minimum cement content per

cu. m

kg (bags)

Maximum water –

cement ratio

kg/kg

Consistency range in

slump

mm (inch)

Designated size of coarse

aggregate

square opening –

std. mm

Minimum compressive strength of 150mm x 300mm concrete cylinder @ 28

days

MN/m 2 (psi)

A 360 (9) 0 50 -100 (2 4) – (1 ½ - No. 4)37. 5 – 4 20 (3000)

B 320 (8) 0.

50 -100 (2 –

4)

50 – 4 (

  • No. 4) 16 (2400)

C 380 (9) 0.

50 -100 (2 –

4)

12. 5 – 4.

(½ - No. 4) 20 (3000)

P 440 (11) 0 100 max ( 4

max)

19 – 4.

(3/4 - No. 4)

37. 7 (5000)

Seal 380 (9) 0 100 – – 200 (4 8) 25 - No. 4)– 4 (1 20 (3000)

PAYMENT ADJUSTMENT FOR PAVEMENT WITH DEFICIENCY IN STRENGTH

Deficiency in strength of concrete pavement

Percent (%)

Percent (%) of

contract price

allowed

Less than 5 100

5 to less than 10 80

10 to less than 15 70

15 to less than 20 60

20 to less than 25 50

25 or more 0

PAYMENT ADJUSTMENT FOR PAVEMENT WITH DEFICIENCY IN THICKNESS

Deficiency in the

average thickness

per lot(mm)

Percent (%) of

contract price

per lot

0 – 5 100

6 – 10 95

11 – 15 85

16 – 20 70

21 – 25 50

more than 25 removed and replaced (no payment)

Was this document helpful?

Docshare - ......

Course: Civil Engineering

999+ Documents
Students shared 2960 documents in this course

University: Bicol University

Was this document helpful?
1
MATERIALS ENGINEER
ACCREDITATION
EXAMINATION
REVIEWER

Students also viewed

Related documents