Methods of Building Construction PDF

 + PLANS SPECIFICATIONS PHYSICAL STRUCTURE STAGE 1 STAGE 2 STAGE 3 PRE COMPLETION/ CONSTRUCTION POST CONSTRUCTION COM...

 + PLANS SPECIFICATIONS PHYSICAL STRUCTURE STAGE 1 STAGE 2 STAGE 3 PRE COMPLETION/ CONSTRUCTION POST CONSTRUCTION COMPLETION  PRE CONSTRUCTION NATIONAL BUILDING CODE ( P.D. 1096 ) 5 M A J O R DIVISIONS IN BUILDING PLANS ARCHITECTURAL AESTHETIC ARCHITECT STRUCTURAL STRENGTH CIVIL ENGR ELECTRICAL/ POWER, LIGHTING & ELECTL ENGR/ ELECTRONIC ENGR ELECTRONIC COMMUNICATION SANITARY/ HEALTH AND SANITARY ENGR/ PLUMBING SANITATION MASTER PLUMBER MECHANICAL NECESSITIES MECHANICAL ENGR  PROJECT: ONE(1) STOREY ONE (1) CLASSROOM SCHOOL BUILDING DURATION: 30 CALENDAR DAYS ARCHITECTURAL PLAN 1 2 3 3 2 1 A B C GA 26 CORR. G I. GA 26 CORR. G I. ROOFING ROOFING D-1 D-1 D-1 W-2 W-1 W-1 W-2 W-2 CLASSROOM F R O N T ELEVATION R E A R ELEVATION CROSS SECTION 1 2 3 1 2 3 1 2 3 SCH. OF DOORS & WINDOWS C C C W-2 W-2 EXPOSED SLOPE B STEEL ‘C’ B CLASSROOM B PURLINS AND SLOPE RAFTERS D-1 W-1 & W-2 FLUSH TYPE GLASS JALOUSIE D-1 W-1 W-1 D-1 HOLLOW CORE WINDOWS ON A A A DOOR W MARINE ALUMINUM HOUSIG CORRIDOR PLYWOOD FACING ON WOOD FRAME FLO O R P LAN R E F L E C T E D CEILING ROOF P LAN *PLANS B Y BOD  STRUCTURAL PLAN C-PURLINS RAFTER C A B ANGULAR BRACE CORR. GI SHEETS C1-F1 C1-F1 C1-F1 WF-1 WF-1 WF-1 WF-1 LB LB BASE PLATE W LONG ANCHOR BOLTS C1-F1 C1-F1 ROOF INSULATION CEILING FIN. COMPRESSED BETWEEN SLAB ON FILL PURLINS AND RAFTER D-1 W-2 WF-1 WF-1 CORRIDOR DOWEL WF-1 CLASSROOM FFL WF-1 FGL WELL COMPACTED NGL COL. FTG. C1-F1 C1-F1 C1-F1 GRAVEL FILL WALL FTG DETAIL CROSS SECTION FOUNDATION P LAN LINTEL BEAM SP O T DETAIL LIN TEL BEAMS FOOTING CO LUMN W A L L FOOTING *PLANS B Y BOD  STRUCTURAL PLAN A A1 L L/4 L/2 L/4 3 -16mm Ø TOP BARS 2 -16mm Ø ADD'L. BARS @ L/4 3 -16mmØBOTTOM BARS 2 -16mm Ø ADD'L. BARS @ L/2 TYPICAL BEAM DETAIL SCALE 1 : 10m 9-12mmØ MATTING BARS EQUALLY SPACED BOTHWAYS 4-16mmØ VERTICAL BARS W/ 9mmØ TIES, SPACED 5 @ 50mm, 5 @ 100mm, REST @ 200mm ON CENTERS 4-12mmØ 9mmØ STIRRUPS 350mm THK. CONCRETE FOOTING N.G.L. 4-12mmØ MAIN BARS W/ 9mmØ STIRRUPS NATURAL GRADE LINE 4-16mmØ VERTICAL BARS W/ 9mmØ TIES, SPACED 5 @ 50mm, 5 @ 100mm, REST @ 200mm ON CENTERS 9-12mmØ MATTING BARS EQUALLY SPACED BOTHWAYS SECTION PLAN WF (4" CHB)  PLUMBING SYSTEM WATER LINE INCLUDING DRAINAGE, WASTE AND VENTILATION SYSTEM OF BUILDING VENTILATION T H R O U G H ROOF ( V T R ) D R Y VENT SHOWER W/ ACCESORIES MAIN VENT B A T H TUB LAVATORIES FIXTURES W A T E R CLOSET H O T W A T E R R ETUR N FLO O R DRAIN KITC HEN SINK FIXTURES COLD W A T E R LINE W/ ACCESORIES FITTINGS W ET VENT H O T W A T E R LINE C L E A N OUT W/ ACCESSORIES W A T E R HEATER W ASTE / SOIL PIPE CORRELATION BETWEEN PLANS & SPECIFICATIONS (PER CLAUSE 52 OF DPWH STD. SPECS, VOL. 1 1988 ED.) THE SPECIFICATIONS AND APPROVED PLANS, SPECIFIED PROVISIONS AND ALL DOCUMENTS AFFECTING THE WORK, DULY ISSUED BY THE ENGINEER TO THE CONTRACTOR ARE ESSENTIAL PARTS OF THE CONTRACT. THEY ARE INTENDED TO BE MUTUALLY COMPLEMENTARY. IN CASE OF DISCREPANCY, SPECIAL PROVISIONS SHALL PREVAIL OVER ALL PLANS AND SPECIFICATIONS; PLANS SHALL GOVERN OVER SPECIFICATIONS; SUPPLEMENTARY SPECIFICATIONS SHALL GOVERN OVER ORIGINAL SPECIFICATIONS; ON ALL PLANS, THE FIGURED DIMENSION, UNLESS OBVIOUSLY INCORRECT, SHALL GOVERN IN CASE OF ANY DISCREPANCY BETWEEN FIGURED DIMENSIONS AND SCALED DIMENSIONS.  MANPOWER REQUIREMENT TECHNICAL S A F E T Y & HEALTH SKILLED / UNSKILLED (DO 56 S.2005) P R O J E C T ENGINEER SAFETY ENGINEER CONST. FOREMAN RESIDENT ENGINEER SAFETY OFFICER LEADMAN FIRST AIDER CARPENTER MTQC ENGINEER NURSES MASON QTY./COST ENGINEER STEEL MAN SANITARY ENGINEER WELDER ELECTRICAL ENGINEER TINSMITH MECHANICAL ENGINEER INSTALLER PAINTER PLUMBER ELECTRICIAN LABORER  PILE FOUNDATION DRILLING, DRIVING, BORING, GRABBING EQUIPMENT S M A L L DRILLING EQPT. DROP H A M M E R DRIVING H E A V Y BORING RIG W/ VIBRO H E A V Y C A B L E GRAB USE FO R MICRO PILES RIG FO R P R E C A S T PILES H A M M E R FO R BORED PILES FO R B A R R E T T E PILES EXCAVATOR-U S E IN T R U C K MIXER T A N D E M WITH T R U C K MOUNTED/CRAWLER C R A N E - L A R G E DIMENSION P U M P C R E T E USE IN POURING OF USE T O C A R R Y & M A N E U V E R P R E CAST EX CAVATIO N & DIGGING H E A V Y FOUNDATIONS. P ILE & S T E E L CAGES. W H E E L LO AD ER T AN D E M W/ D U M P T R U C K - G E N E R A TO R S E T / WELDING MACHINE – USE F O R HAULING & DISPOSAL OF DEBRIS USE AS CO NNECTOR S ON HEAVY AND O T H E R E X C A V A T E D MATERIALS. S T R U C T U R A L S T E E L MEMBERS.  W H E E L LO AD ER T A N D E M W/ D U M P TRUCK-USE FO R HAULING & DISPOSAL OF DEBRIS AND MOBILE C R AN E S – USE TO O T H E R MATER IALS WITHIN T H E PERIPHERAL M A N E U V E R AR O UND & OUTSIDE OF T H E BUILDINGS THE BUILDING TO HOIST MATER IALS & E Q U I P M EN T FROM VARIOUS LOCATIONS T R U C K MIXER T A N D E M WITH P U M P C R E T E USE IN POURING OF HEAVY SUPERSTRUCTURE MEMBERS. FO R MS & SCAFFOLDING – USE TO W ER C R A N E – USE AS AS GUIDE & SUP P OR T CIR CUMFER ENTIAL LIFTING SYSTEM IN FORMING & MECHANISM T O TRANSPORT CHECKIN G ALIGNMENT OF G E N E R A TO R S E T / WELDING MACHIN E – VITAL CONSTRUCTION S T R U C T U R A L M E M B E R S IN & USE AS CO NNECTOR S ON HEAVY MATER IALS & EQUIPMENT AROUND T H E BUILDINGS. S T R U C T U R A L S T E E L MEMBERS. WHEEL LOADER EXCAVATOR/BREAKER BULLDOZER GRADER ROLLER T R U C K MIXER DUMP TRUCK TRAILER TRUCK  RING AND BAR BENDER SAMPLING MOLD BAR CUTTER CONCRETE VIBRATOR 1- BAGGER 2 – BAGGER PORTA LIFT HOLLOW BLOCK MACHINE CONCRETE MIXER CONCRETE MIXER PLATE COMPACTOR TAMPING RAMMER WA LK BEHIND ROLLER SUBMERSIBLE PUMP  14. PREPARATION OF MINIMUM REQUIREMENTS FOR A CONSTRUCTION SAFETY AND HEALTH PROGRAM FOR THE P R O J E C T BEING CONSIDERED PURPOSE THIS DEPARTMENT ORDER SETS T H E GUIDELINES, RULES AND PROCEDURES, TO B E FOLLOWED B Y A L L CONCERNED IN T H E IMPLEMENTATION OF DEPARTMENT OF LABOR AND EM P LO YMENT D.O. No. 13(DOLE D.O. No.13), SERIES OF 1998 OTHERWISE KNOWN AS T H E “GUIDELINES GOVERNING OCCUPATIONAL S A F E T Y AND HEALTH IN T H E CONSTRUCTION INDUSTRY”, WITH EMPHASIS GIVEN ON T H E METHODOLOGY TO B E USED IN ESTIMATING T H E COST OF CONSTRUCTION S A F ET Y AND HEALTH PROGRAM AS REQUIRED IN SECTION 17. GENERAL GUIDELINES IN COMPLIANCE WITH SECTION 17 OF DOLE D.O. No. 13, T H E IMPLENTATION OF CONSTRUCTION S A F E T Y SHALL B E CONSIDERED IN A L L STAGES OF P R O J E C T P R O C U R EM ENT ( DESIGN, ESTIMATE, AND CONSTRUCTION ) AND ITS COST SHALL B E INTEGRATED TO T H E OVERALL P R O J E C T COST UNDER PAY ITEM “SPL- CONSTRUCTION S A F ET Y AND HEALTH ” AS A LUMPSUM AMOUNT, TO B E QUANTIFIED IN T H E DETAILED ESTIMATE. LIKEWISE, A L L REQUIREMENTS, PROVISIONS, AND INSTRUCTIONS PERTAINING TO T H E IMPLEMENTATION OF CONSTRUCTION S A F E T Y AND HEALTH IN E V E R Y P R O J E C T SHALL B E INCLUDED IN T H E P R O J E C T BIDDING DOCUMENTS SPECIFICALLY UNDER T H E INSTRUCTION TO BIDDERS.  CONCTRUCTION P R O J E C T (D.O. No. 56 S. 2005) CONSTRUCTION S A F E T Y AND H E A L T H P R O G R A M ( C S H P ) T H E REQUIRED C S H P FO R SPECIFIC P R O J E C T S H A L L INCLUDE B U T N O T LIMITED T O T H E F F : 1. COMPOSITION OF S A F E T Y & H E A L T H P E R S O N N E L RESPONSIBLE F O R T H E IMP LENTATIO N OF CSHP; 2. SPECIFIC S A F E T Y POLICIES W/C S H A L L B E U N D E R T A K E N IN T H E CONSTRUCTION SITE INCLUDING F R E Q U E N C Y O F & P ER SO NS RESPONSIBLE FO R CONDUCTING TO O L B O X AND GANG MEETING; 3. P ENALTIES AND SANCTIONS FO R VIOLATIONS OF T H E CSHP; 4. FR EQ UENCY, C O N T E N T AND P ER SO NS RESPONSIBLE FO R ORIENTING, INSTRUCTING AND TRAINING A L L W O R KER S A T T H E SITE WITH REGARD T O T H E C S H P WHICH T H E Y OPERATE; & 5. T H E M A N N E R OF DISPOSING W ASTE ARISING F R O M T H E CONSTRUCTION. MANPOWER EQUIPMENT/FACILITIES 1. S A F E T Y ENGINEER / OFFICER 2. S A F E T Y M A N / OFFICER 1. P E R S O N A L P R O TECTIVE E Q U P M E N T (PPE) -AS R EC O MMEN D ED B Y DOLE, FO R EVER Y -FO R G E N E R A L CONST. T H E REQUIRED BASIC CONST. P R O J. W 100 & A B O V E WORKERS, AN P P E FO R A L L W O R KER S S H A L L B E S A F E T Y ACCREDTED S A F E T Y OFFICER B Y DOLE-BWC HELMET, S A F E T Y GLO VES AND S A F E T Y SHOES. S H A L L B E EMP LO YED. O N L Y T H E COST FO R THE S P E C I A L T Y P P E S H A L L B E PROVIDED IN ADDITION CONST. S A F E T Y & H E A L T H OFICER , WHETHER T O OR IN LIEU O F T H E CORRESPONDING P P E AS ON F U L L OR P A R T TIME BASIS ASSIGNED ON T H E W O R K ACTIVITY REQUIRES. SITE S H A L L B E INCLUDED IN T H E ESTIMATE. 2. SIGNAGES AND BARRICADES 3. H E A L T H PERSONNEL -S H A L L B E PROVIDED AS A P R ECAUTIO N TO -O N L Y T H E MEDICAL AND DENTAL ADVICE T H E W O R KER S & T H E G E N E R A L PUBLIC PRACTITIONERS A C T U A L L Y ASSIGNED IN THE OF T H E HAZARDS EXISTING A T T H E WORKSITE. P R O J E C T S H A L L B E INCLUDED IN T H E COST OF 3. FACILITIES SAFETY. - W AD EQ UTE S A F E DRINKING WATER; SANITAR Y & WASHING FACILITIES: LIVING ACCOMODATIONS FO R WORKERS. COSTING P A Y ITEM “ S P L – CONSTRUCTION S A F E T Y AND H E A L T H ” AS A L U M P S U M AMOUNT, T O B E QUANTIFIED IN T H E DETAILED ESTIMATE.  BUILDING CONSTRUCTION METHODOLOGY ( B Y PERT/CPM DIAGRAM) PROJECT: ONE(1) STOREY TWO(2) BEDROOM LOW COST HOUSING PROCUREMENT/DELIVERY OF CONSTRUCTION MATERIALS D 26 ELECTRICAL/SANITAR Y ROUGH-IN J 16 14 INST. ELECT/ 12 MECH/SANITARY CARPENTRY WORKS FIXTURES P S 2 1 1 2 6 MOVE- 4 17 IN EARTH CONCRETE MASONRY 8 1O 13 15 MOVE WORKS WORK S WORKS ROOF FRAMING ROOFING FINISHES PAINTING OUT A B C F H M N Q T V 2 2 5 3 5 4 4 3 2 WAIT WAIT WAIT WAIT WAIT 2 4 E G K O R U 1 2 2 SOIL BACKFILL INST. OF PUR LINS INST. GUTTER & INST. FAB. MATLS & HARDWARE POISONING 5 WAIT 9 FLUSHING 3 11 14 I W 3 DAMPROOFING/SLAB ON FILL 7 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 LEGEND: CALENDAR DAYS NETWORK - A B ES LS EF LF ACTIVITY - EVENT - A ES LS DUMMY - CRITICAL P A T H -  STAGE II CONSTRUCTION  CONSTRUCTION METHODOLOGY FOR BUILDINGS STAGE I – WORK ACTIVITIES BELOW / ON GROUND P A R T A – MOBILIZATION -MOVING IN O F MANPOWER, EQ UIP MENT & MATER IALS AT T H E P R O J E C T SITE. P A R T A-FACILITIES F O R T H E ENGR A.1.1- OFFICES & LABORATORIES A.1.2- VEHICLES FO R T H E ENGR A.1.3- ASSISTANCE T O T H E ENGR A.1.4- PHOTOGRAPH P A R T E – DAMPROOFING/ MOISTURE CONTROL ABOVE/ON GROUND P A R T C – TER MITE CONTROL -P O L Y E T H E L E N E SHEETS & WOOD PRESERVATION B ELO W GROUND DPWH SP ECS V O L III- ITEM 1000 DPWH SP ECS V O L III ’95 ED. UPPER- WOOD PRESERVATION ITEM 1016-WATERPROOFING LOWER- SOIL POISONING -HYDROLITHIC WATERPROOFNG P A R T B- EARTHWORKS P A R T D – FOUNDATION WORKS -COVERS MINOR/MAJOR A. SHALLO W FOUNDATION- EX C AVATIO N & BACKFILL SPREAD,STRIP, M A T FOUNDATION E A R T H F I L L & GRAVELFILL B. D EEP PILE FOUNDATION DPWH SP ECS V O L III ’95 ED. DPWH SP ECS V O L II ’04 ED. ITEM 800-CLEARING & GRUBBING ITEM 400- PILING ITEM 801-R E M O V A L OF STRCTURE DPWH SP ECS VO L III ‘95 ED. AND OBSTRUCTIONS ITEM 1300-PILING TO INCLUDE ITEM 802-EXCAVATION S H E E T PILING ITEM 803-S T R U C T U R E EXCVATION ITEM 1301-T E S T PILE ITEM 804-E M B A N K M E N T NVPILAR 2008  CONSTRUCTION METHODOLOGY FOR BUILDINGS STAGE III – FINISHING WORKS / COMPLETION OF THE STRUCTURE P A R T R – CONST. S A F E T Y AND H E A L T H (DO. 56) P A R T N – WATERPROOFING WORKS DPWH SP ECS V O L III ’95 ED. ITEM 1016-WATERPROOFING T Y P E S OF WATERPROOFING P A R T Q – MECHAN ICAL WORKS DPWH SP ECS V O L III ’95 ED. 1. C E M E N T B ASE WATERPROOFING 2. M E M B R A N E WATERPROOFING ITEM 1200- AIR CONDITIONING AND REFRIGERATION SYSTEM 3. LIQUID WATERPROOFING ITEM 1201-W A T E R P U M P I N G SYSTEM 4. HYDROLITHIC WATERPROOFING ITEM 1202-AUTO MATIC WATER SP R IN KLER SYSTEM P A R T M – PAINTING / VARNISHING ITEM 1203-ELECTR IC ELEVATO R DPWH SP ECS V O L III ’95 ED. ITEM 1204-ELECTR IC DUMBWAITER ITEM 1032-PAINTING/VARNISHING AND ITEM 1205-OXYGEN, NITROUS OXIDE, O T H E R R E L A T E D WORKS V A C U U M & F U E L SYSTEM -EXTERIOR & INTERIOR ITEM 1206- HEATING SYSTEM ITEM 1207-BOILER P A R T L – FINISHES DPWH SP ECS V O L III ’95 ED. P A R T P – E L E C T R I C A L WORKS ITEM 1018-CERAMIC TILES DPWH SP ECS V O L III ’95 ED. ITEM 1019-WOOD TILES ITEM 1100-CONDUITS, BOXES ITEM 1020-V I N Y L FLO O R TILES AND FITTINGS ITEM 1021-C E M E N T FLO O R TILES ITEM 1101-WIRES & WIRING DEVICES ITEM 1022-STUCCO FINISH ITEM 1102-POWERLOAD CENTER, ITEM 1023-GRANOLITHIC M A R B L E FIN. SWITCHGEAR & P A N E L BOARD ITEM 1024-P E A G R A V E L WASH-O U T FIN ITEM 1025-B U S H H A M M E R E D FINISH P A R T O – SANITAR Y WORKS ITEM 1026-P E B B L E WASH-O U T FINISH DPWH SP ECS V O L III ’95 ED. ITEM 1027-C E M E N T P L A S T E R FINISH ITEM 1001-STO R M DRAINAGE AND ITEM 1028-S Y N T H E T I C ADOBE FINISH SEWERAGE SY STE M ITEM 1029-GR ANATITE WASH-O U T FIN ITEM 1002-PLUMBING 1. WORKMANSHIP 2. MATERIALS 3. TIME 4. FACILITIES 5. ENVIRONMENTAL, S A F E T Y & HEALTH 6. RESOURCE DEPLOYMENT  1 THE METHODOLOGY, TECHNIQUE AND CRAFTMANSHIP APPLIED BY THE CONTRACTOR OR THE IMPLEMENTING OFFICE TO ATTAIN THE HIGHEST QUALITY CALLED FOR IN ACCORDANCE WITH THE APPROVED PLANS AND SPECIFICATIONS. NVPILAR 2008  2 THE QUALITY, QUANTITY AND T Y P E OF CONSTRUCTION MATERIALS AND COMPONENTS SUPPLIED B Y THE CONTRACTOR OR THE IMPLEMENTING OFFICE OR B Y OTHER ENTITIES MEETING THE STANDARD SET IN THE QUALITY ASSURANCE (QA) AND QUALITY CONTROL PROGRAM (QCP) OF THE PROJECT. NOTE : DERIVED FROM CPES MANUAL  3 THE DURATION IN WHICH THE CONTRACTOR OR THE IMPLEMENTING OFFICE WILL SATISFACTORILY COMPLETE THE PROJECT IN ACCORDANCE WITH APPROVED SCHEDULE INDICATED IN THE PERT/CPM, BAR CHART WITH S-CURVE OR APPROVED PROGRAM OF WORKS.  4 THE TEMPORARY FACILITIES SET UP AND MAINTAIN B Y THE CONTRACTOR FOR THE ENTIRE DURATION OF THE PROJECT WHICH CONFORM TO THE BEST STANDARD SET FORTH IN THE CONDITIONS AND SPECIFICATIONS OF THE CONTRACT. THIS INCLUDES PROJECT SIGNBOARD, FIELD AND OFFICE FACILITIES, TRANSPORTATIONS, AND OTHER EQUIPMENT REQUIRED IN THE CONTRACT. NOTE : DERIVED FROM CPES MANUAL NVPIAR 2008 5 THE MANDATORY PROVISIONS OF A CONSTRUCTION SAFETY AND HEALTH PROGRAM IN ACCORDANCE WITH D.O. No. 13 s. 1998 OF DOLE AND D.O. No. 56 S. 2005 OF DPWH AS REQUIRED IN THE CONTRACT TO ENSURE PROTECTION OF WORKERS AND THE GENERAL PUBLIC WITHIN THE DURATION OF THE PROJECT.  6 THE CAPACITY AND ABILITY OF THE CONTRACTOR OR THE IMPLEMENTING OFFICE TO BALANCED THE MOBILITY OF RESOURCES SUCH AS MANPOWER, MATERIALS, AND EQUIPTMENT AT A GIVEN TIME BASED ON THE APPROVED SCHEDULE (PERT/CPM, CASH FLOW, MANPOWER SCHEDULE, EQUIPTMENT SCHEDULE, AND BAR CHART) WITHIN THE DURATION OF THE PROJECT.  STAGE III COMPLETION/POST COMPLETION  PREPARATION OF AS – BUILT PLANS & SPECS. ( RULE II OF THE I.R.R. OF PD. 1096 ) AS – BUILT PLANS AND SPECIFICATIONS JOINTLY SIGNED AND SEALED BY THE DESIGNING ARCHITECT OR CIVIL ENGINEER AND THE ARCHITECT OR CIVIL ENGINEER IN – CHARGE OF THE CONTRUCTION AND SIGNED BY THE CONTRACTOR ( IF THE CONSTRUCTION IS UNDERTAKEN BY CONTRACT ) AND CONFIRMED B Y THE OWNER. SAID PLANS AND SPECIFICATIONS SHALL REFLECT FAITHFULLY ALL CHANGES, MODIFICATIONS AND ALTERATIONS MADE ON THE ORIGINALLY APPROVED PLANS AND SPECIFICATIONS WHICH ARE THE BASIS OF THE ISSUANCE OF THE ORIGINAL BUILDING PERMIT.  WARRANTY ( R.A. 9184, RULE XIX, SECTION 62 ) SECTION 62.2 For the procurement of infrastructure projects, the contractor shall assume full responsibility for the contract work from the time project construction commenced up to final acceptance by the government and shall be held responsible for any damage or destruction of the works except those occasioned by force m je a u r. The contractor shall be fully responsible for the safety, protection, security and convenience of his personnel, third parties, and the public at large, as well as the works, equipment, installation and the like to be affected by his construction work and shall be required to put up a warranty security in the form of cash, bank guarantee, letter of credit, GSIS or surety bond callable on demand, in accordance with the following schedule: FORM OF WARRANTY Minimum Amount in % of Total Contract Price 1. Cash deposit, Cash bond or letter of credit Five Percent ( 5% ) 2. Bank Guarantee Ten Percent ( 10 % ) 3. Surety bond Thirty Percent ( 30% ) The warranty security shall be stated in Philippine pesos, shall remain effective during the applicable warranty period provided in section 62.2.2 hereof, and shall be returned only after the lapse of the said warranty period.  WARRANTY ( R.A. 9184, RULE XIX, SECTION 62 ) 62.2.2. After final acceptance of the project by the Government, the contractor shall be held responsible for structural defects and/or failure of the completed project within the following warranty periods from final acceptance, except those occasioned by force ma jeureand those cause by other parties: A) Permanent Structures: Fifteen (15) years Buildings of types 4 (steel, iron, concrete, or masonry construction with walls, ceilings, and permanent partitions of incumbustible fire resistance) and 5 (steel, iron, concrete, or masonry construction), steel and concrete bridges, flyovers, concrete aircraft movement areas, ports, dams, diversion tunnels, causeways, wharves, piers, dikes, filtration and treatment plants, sewerage systems, power plants, transmission and communication towers, railway system, and other similar structures; B) Semi-Permanent Structures: Five (5) years Buildings of types 1 (wooden), 2 (wood with 1 hour fire resistance), and 3 (masonry and wood construction), concrete roads, asphalt roads, river control, drainage, irrigation and drainage canals, municipal ports and river landing, deep wells, rock causeway, pedestrian overpass, and other similar structures; and C) Other Structures: Two (2) years Bailey and wooden bridges, shallow wells, spring developments, and other similar structures. 62.2.1. The defects liability period for infrastructure projects shall be one year from project completion up to final acceptance by the Government. During this period, the contractor shall undertake the repair works, at his own expense, of any damage to the infrastructure projects on account of the use of materials of inferior quality within ninety (90) days from the time the head of the procuring entity has issued an order to undertake repair. In case of failure or refusal to comply with this mandate, the Government shall undertake such repair works and shall be entitled to full reimbursement of expenses incurred therein upon demand. Any contractor who fails to comply with the preceding paragraph shall suffer perpetual disqualification from participating in any public bidding and his property or properties shall be subject to attachment or garnishment proceedings to recover the costs. All payables of Government in his favor shall be offset to recover the costs. Scope of Works in Building Construction A. – MOBILIZATION, B. – EARTHWORKS C – TERMITE CONTROL & WOOD PRESERVATION D – FOUNDATION WORKS E – DAMP PROOFING / MOISTURE CONTROL F – CONCRETE WORKS G – MASONRY WORKS H – CARPENTRY WORKS I – FABRICATED MATERIALS AND HARDWARES DPWH | Bureau of Construction Scope of Works in Building Construction J – ROOF FRAMING WORKS K – ROOFING WORKS L – FINISHES M – PAINTING / VARNISHING N – WATER PROOFING O – SANITARY WORKS P – ELECTRICAL WORKS Q – MECHANICAL WORKS DPWH | Bureau of Construction A MOBILIZATION Is best described as the deployment of resources at the project site. This also involves any work that is necessary to provide access to the site including, but not limited to, grading, clearing and grubbing. MANPOWER MATERIALS EQUIPMENT A MOBILIZATION Application in DPWH Projects Mobilization and demobilization shall be treated as a separate pay items of works as prescribed in D.O. 72, Series of 2012. It shall be computed based on the equipment requirements of the project stipulated in the proposal and contract booklet. In no case shall mobilization and demobilization exceed 1% of the Estimated Direct Cost of the civil works items. DPWH | Bureau of Construction A MOBILIZATION D.O. 44 Series of 2012 – STANDARD PROJECT DURATION OF DPWH PROJECTS (Duration of Mobilization and Demobilization) ESTIMATED DIRECT COST OF THE PROJECT TIME DURATION Up to P5 Million 10 c.d. Above P5 Million up to P20 Million 15 c.d. Above P20 Million up to P50 Million 20 c.d. Above P50 Million up to P100 Million 25 c.d. P100 Million up to P150 Million 30 c.d. No standard duration was established for projects costing more than P150 Million. Computation shall be based on the PERT/CPM schedule, considering the use of optimum additional resources. A Safety and Health Occupational Safety and Health is the Promotion and maintenance of highest degree of physical, mental and social well-being of workers in all occupation. DPWH | Bureau of Construction A Safety and Health 1 General Requirements 1. Construction Safety and Health Program (CSHP) refers to a set of detailed rules to cover the processes and practices that should be utilized in a specific construction site in conformity with the OSH. ▪ Part of the first envelope (Technical Proposal) during the bidding process ▪ Shall include but not limited to the following: a. Composition of the Safety and Health personnel b. Specific safety policies c. Penalties and sanctions for violations d. Manner or disposing waste A Safety and Health 1 General Requirements 2. Construction Safety and Health Organization 2.A Safety Engineer/ Officer A Safety and Health 1 General Requirements B. Health Personnel C. Personal Protective Equipment (PPE) & Devices D. Signage and Barricades E. Facilities F. Safety and Health Training EARTHWORKS B EARTHWORKS -Involves clearing and grub bing, excavation, backfilling and gravel bedding of all stru ctural foundation footings for columns, walls, stairs and other EARTHFILL structural members. FINISH FLR. LINE -Also involves the embank ment F.G.L of suitable materials to meet N.G.L EXCAVATION the required elev ation established on the line and BACKFILL grade of the building struct ure. GRAVEL BEDDING DPWH | Bureau of Construction B EARTHWORKS Application in DPWH Projects ❖ ITEM 803 – STRUCTURE EXCAVATION As applied to public works structures, this item shall consist of the necessary excavation for foundations of buildings in reasonably close conformity with the plans or as established by the engineer. ❖ ITEM 804 – EMBANKMENT This item shall consist of the construction of embankment in accordance with the specification and in conformity with the lines, grades, and dimensions shown on the plans established by the engineer. B EARTHWORKS 1 General Requirements 1.1 Earth- Moving Equipment 2 Methodology 1. Construction Survey 2. Finding Grade Level 3. Setting Batterboards B EARTHWORKS ▪ CLEARING AND GRUBBING "Clearing" – removing and disposing of all unwanted material from the surface, such as trees, vegetation, boulders, and trash. "Grubbing" -- removing and disposing of all unwanted material from underground, such as sod, boulders, stumps, roots, buried logs, or other debris. B EARTHWORKS ▪ EXCAVATION The removal of earth, usually to allow the construction of a foundation or basement. Bulk Excavation EXISTING GROUND LEVEL LIMIT OF BULK EXCAVATION LOWEST BASEMENT LEVEL B EARTHWORKS B EARTHWORKS FOUNDATION PLAN B EARTHWORKS RETAINING WALL and FOOTING DETAIL B EARTHWORKS ISOLATED FOOTING DETAIL DEPTH OF EMBEDMENT - Measured from NGL (Natural Ground Level) to bottom of Isolated Footing. Thickness of gravel bedding or lean concrete must be considered in determining the total depth of excavation for Isolated footing. B EARTHWORKS GEOTECHNICAL INVESTIGATION REPORT Below-ground investigation by boring, sampling, and testing the soil strata to establish its compressibility, strength, and other characteristics likely to influence a construction project, and prepare a subsurface profile and soil report. Also called foundation investigation, soil investigation, soil test, or subsurface investigation. CASE 1 H ≤ 1.50 m H < W or L H CASE 2 1.50m > H < 2.50m H>W/L H 45˚ CASE 3 2.50m < H < 4.00m DW/L 4 3 H 1.50m ▪ EXCAVATION PROTECTION Sheet piling is an earth retention and excavation support technique that retains soil, using steel sheet sections with interlocking edges. Sheet piles are installed in sequence to design depth along the planned excavation perimeter. ▪ EXCAVATION PROTECTION Soil nailing is defined as a method of reinforcing natural soil slopes by installing grouted steel bars (called nails), into the soil slope with the purpose of increasing the shear capacity of the failure surface. The nails are placed thru the potential failure planes; the frictional force developed between the grouting around the nails and the soil provide the required stabilization force. ▪ EXCAVATION PROTECTION Shotcrete is a mixture of portland cement, aggregate, and water conveyed by compressed air to a spray gun. It is a product developed as a solution for tunnels, underground structures, slope stabilization and structural repairs. It is a mortar that is sprayed pneumatically onto surfaces at a high velocity. Shotcrete material is mortar or small-aggregate concrete applied using a wet or dry process. ▪ EXCAVATION PROTECTION ▪ EXCAVATION PROTECTION SHOTCRETE/SOIL NAILING Slope Protection = Perimeter x Height SHEET PILE Slope Protection = Perimeter ▪ BACKFILLING and COMPACTION The replacement of excavated earth into a trench around or against a basement /crawl space foundation wall. ▪ DISPOSAL Dispose of excess soil materials on-site in a manner and location as approved by Owner. Excavation = Backfill + Disposal ▪ TRIMMING Horizontal Trimming Stripping of topsoil to attain final formation. Vertical Trimming Footing and Footing Tie Beam Vertical Trimming = perimeter x thickness Retaining Wall, Pits and Tanks Vertical Trimming = perimeter x height Note: No need to provide formworks for footing if vertical trimming were already considered. Vertical trimming for retaining wall, pits and tanks should only be considered if there’s no requirement for slope protection and it falls to CASE 1 and CASE 3 of structural excavation methodology. B EARTHWORKS Construction procedure and lay-out 1. Locate the boundaries of the construction site. 2. Clear the site of any obstructions. 3. Determine the building set back from the road line. NYLO N CHORD BATTER BOARD PLUMB BOB B EARTHWORKS 4. Fix the intersections ESTABLISHING T H E SQUARE or corners at 90 1/2" x 4’ x 8’ PLYWOOD BOAR D degrees. 2” x 3” BATTER BOA RD 5. Verify the measure- 2” x 2” STAKES ment in the plan. a) Center to Center, b) Center to Outer Side a c c) Outer to Outer side d) Inside to inside. b d DPWH | Bureau of Construction B EARTHWORKS Method on Layout and Staking with the Aid of Instrument B EARTHWORKS Method on Layout and Staking with the Aid of Instrument Staking out is done before establishing the grade level. It begins with locating the lot lines. Corners of the lot should normally be marked with stakes. Then, proceed: 1. Center and level the instrument (builder’s level or transit) over the lot corner stake. Measure the setback called for by local codes. Sight across to the opposite corner stake. 2. Drive a 2 × 2 stake at the setback in line with the lot stakes. Use the transit or builder’s level to check alignment. The vertical and horizontal crosshairs should center on the top of the stake. Drive a nail on the top- center of the stake. 3. Place another stake at the correct setback for one side of the property line. You are now ready to stake out the building lines. B EARTHWORKS Method on Layout and Staking with the Aid of Instrument Staking Procedure Staking out building lines requires two persons. When a builder’s level is used, the second person will use a rod that must be plumbed along the line of sight. Since a transit can pivot up and down, the second person uses a stake to locate corners along the building line. 1. Attach a plumb bob to the center screw or hook on the underside of the instrument. Some instruments have an optical plumb for zeroing in over a point. Shift the tripod until the point of the plumb bob is directly over the point marking the corner of the building lines. This is at point A on line AB, as shown in the figure. 2. Level the instrument before proceeding further. Recheck for plumb. 3. From point A (or station A), turn the telescope so the vertical crosshair is directly in line with the edge of a stake or rod held at point B. When using a transit, sight the telescope on the stake. 4. Use a measuring tape along line AB to locate distance to the corner. Drive a corner stake at this point. DPWH | Bureau of Construction B EARTHWORKS 3 Quality Control *For Clearing and Grubbing, Removal of Structures, Structure Excavation: - If excavated materials are wasted, the volume involved shall be reported so that Quality Control requirements may be adjusted accordingly. *Submit Project Engineer Certificate of Waste - If excavated materials are incorporated into the work: *For every 1,500 cu.m. or fraction thereof: 1-G, Grading Test 1-P, Plasticity Test (LL, PL, PI) 1-C, Laboratory Compaction Test *For every 150 mm layer in uncompacted depth: 1-D, Field Density Test B EARTHWORKS 3 Quality Control *For Embankment: *For every 1,500 cu.m. or fraction thereof: 1-G, Grading Test 1-P, Plasticity Test (LL, PL, PI) 1-C, Laboratory Compaction Test *For every 200 mm layer in uncompacted depth: 1-D, Field Density C TERMITE CONTROL & WOOD PRESERVATION -Are methods to prolong and protect wood products and structures from termite infestation UPPER LOCATION: Soil poisoning WOOD PRESERVATION A process wherein the soil is treated with chemical solutions to control and prevent the entry of termite into the structure Wood preservation a process wherein the wood is also treated with chemical solution and are applied directly either external or internal on wood surfaces. LOWER LOCATION : SOIL POISONING DPWH | Bureau of Construction C TERMITE CONTROL & WOOD PRESERVATION 1 General Requirements 1.1 All labor, materials and equipment to be used in the completion of the job shall be furnished by the pest control provider. 2. Product demo should be presented which includes product data and methods of application 3. All work shall be done in the order of progress required by the Owner’s construction program. C TERMITE CONTROL & WOOD PRESERVATION 2 Treatment Procedures 2.1 Pre-Construction Treatment 2.1a Soil Treatment Bottom surface and the sides of the excavation made from masonry foundations and basements shall be treated with termicide concentrate at a rate of 5 L/ m2 surface area or as specified by the product data Treatment for Foundation Pits C TERMITE CONTROL & WOOD PRESERVATION 2 Treatment Procedures Treatments for Masonry Foundation, Reinforced Concrete Foundation C TERMITE CONTROL & WOOD PRESERVATION 2 Treatment Procedures 2.2 Post- Construction Treatment 2.2. a Soil Treatment ▪ Cordoning Method - When there is no visible evidence of termite infestation ▪ Drenching Method - When the soil shows termite infestation Drenching Method along the perimeter of the building C TERMITE CONTROL & WOOD PRESERVATION 2 Treatment Procedures 2.2 Post- Construction Treatment 2.2. b Drilling Service - Is done in order to treat the soil under cemented floor slabs. Termicide solution is injected through soil injector using the power machine deep under the surface to penetrate the hidden areas susceptible to subterranean termites DPWH | Bureau of Construction C TERMITE CONTROL & WOOD PRESERVATION 2 Treatment Procedures 2.3a Pressure Treatment Method Pressure treating is a process that forces a chemical preservative deep into the wood. The wood product is placed into a humongous cylindrical holding tank, and the tank is depressurized to remove all air. The tank is then filled with the preservative under high pressure, forcing it deeply into the wood. The tank is then drained and the remaining preservative reused. The wood is removed from the tank and prepared for shipment to your local lumberyard. Pressure Treatment Method 2.3b Non-pressure Treatment Method - Hot-Cold Bath, Vacuum Process, Double Diffusion, Cold Soaking, Superficial Methods DPWH | Bureau of Construction C TERMITE CONTROL & WOOD PRESERVATION 3 Quality Control Minimum Test Requirements: 1- IR (Inspection Report for materials used) ▪ SOIL POISONING RETICULATION SYSTEM It is a network of underground perforated pipes designed to distribute an anti-termite chemical evenly throughout building foundations. Soil Poisoning = Footprint Area of the Building SPRAY APPLIED SYSTEM Treatment is done for the sides & bottom surface of the foundation trenches and is treated with chemical emulsion. The earth around the external perimeter of the building will also be treated Soil Poisoning = Footprint Area of the Building + Sides and Bottom Area of Footing + Area of Retaining Wall SPECIFICATION RETICULATION SYSTEM D FOUNDATION WORKS (2) main structures ❖ Superstructure- the structural elements above the ground. ❖ Substructure-usually called the “Foundation” which is the chief means of supporting a building. They carry both the dead load and the live loads and their primary purpose is to transmit the collective building loads to the underlying soil or rocks. D FOUNDATION WORKS 1 General Requirements Considerations: 1. Check the foundation base or soil condition if it complies with the boring data. 2. Check the depth if it complies with plans. 3. Check alignment and distances. 4. No footing shall rest on fill. 5. All footings and tie beams shall rest on a well compacted gravel bed 6. Back fill shall be place in layers at 200mm thk. and shall be compacted to 95% Maximum Dry Density. D FOUNDATION WORKS 2 Types of Building Foundation 2.2 SHALLOW FOUNDATION Strip foundation Spread footing Mat Foundation D FOUNDATION WORKS 2 Types of Building Foundation 2.2 DEEP FOUNDATION Micropiles Bored Piles Pre-cast Piles DPWH | Bureau of Construction D FOUNDATION WORKS 2 Types of Building Foundation 2.3 JET GROUTING Ground stabilization procedure that works on plastic granular materials using the principle of Ultra High Pressure Injection of Cement Grout D FOUNDATION WORKS 3 Quality Control 3.1 Pile integrity test Crosshole Sonic Logging (CSL) Low Strain High Strain Dynamic Testing Dynamic Testing 3.2 Minimum Testing Requirement (Same with Concrete Works) E DAMP PROOFING/ MOISTURE CONTROL - is a process designed to contain and eliminate the penetration of moisture discharged by the earth/soils on the building structures. - Damp proofing membrane/vapor barrier is a vertical, horizontal or sloping water proof skin such as asphalt 20mm thick, copper sheets, polyethylene film or any other materials of various designs and manufacturing specifications. - It is placed directly on the slab on fill (SOF) for low rise building or on the basement floor for high rise building to form a protective barrier between the soil and the concrete structure which, in turn, ensure protection to its architectural finishes. DPWH | Bureau of Construction E DAMP PROOFING/ MOISTURE CONTROL F CONCRETE WORKS 1 General Requirements 1. Formworks and Scaffoldings 2. Steel Reinforcement 3. Cement 4. Aggregates 5. Water 6. Admixture 7. Storage of Materials F CONCRETE WORKS 1 Methods FORMWORKS AND SCAFFOLDINGS 1. Formworks Construction Concrete forms shall be mortar-tight, true to the dimensions, lines and grades of the structure. They should have the sufficient strength, rigidity, shape and surface smoothness. Form fasteners consisting of form bolts, clamps or other devices shall be used as necessary to prevent wrecking the forms during concrete placement. The use of ties consisting of twisted wire loops to hold forms in position will not be permitted. F CONCRETE WORKS FORMWORKS AND SCAFFOLDINGS 2. Removal of Forms Forms shall not be removed without the consent of the Engineer. Minimum % Design Strength Minimum Time Centering under girders, beams frames or arches 14 days 80% Floor slabs 14 days 70% Walls 1 day 70% Columns 2 days 70% Sides of beams and all other vertical surfaces 1 day 70% Forms and falsework shall not be released from under the concrete without first determining if the concrete has gained adequate strength without regard to the time element. In the absence of strength determination, the forms and falsework are to remain in place until removal is permitted by the Engineer. DPWH | Bureau of Construction F CONCRETE WORKS B. STEEL REINFORCEMENTS Steel is considered as an excellent partner of concrete in resisting tension and compression. The design of reinforced concrete assumes that concrete and steel acts together in carrying load in the state of simultaneous deformation. 1. ) Bar splicing a. Tension Bar b. Compression Bar 2. ) Bar Spacing - shall not be less than the normal diameter of the bars or 40 mm for column, or as specified in the structural design notes. FF CONCRETE WORKS a. Splice location on suspended slab b. Splice location for continuous beams DPWH | Bureau of Constr uction E CONCRETE WORKS a. Splice location for cantilever beams F CONCRETE WORKS a. Splice location for columns DPWH | Bureau of Construction F CONCRETE WORKS 3. Concrete Protection For Reinforcement Structure Minimum cover (mm) A. Footing, Footing Tie Beams 75 mm B. Beams and Columns (to stirrups and ties) 40mm C. Walls, side of FTB (cast against forms) 40mm D. Suspended Slab 20mm F CONCRETE WORKS 4. Details of Reinforcement a. ) Standard Hooks 180 deg. Bend plus 4 bar diameter extension, but not less than 65 mm at free end of bar. 90 deg. Bend plus 12 bar diameter extension at free end of bar. For stirrup and tie hooks A. 16mm bar and smaller, 90 deg. Bend plus 6 bar diameter at free of bar or B. 20mm and 25mm bar, 90 deg. Bend plus 12 bar diameter extension at free end of bar or C. 25mm bar and smaller, 135 deg. Bend plus 6 bar diameter at free end of bar, or D. As specified in the structural design notes DPWH | Bureau of Construction F CONCRETE WORKS DPWH | Bureau of Construction F CONCRETE WORKS 5. Minimum Bend Diameter MINIMUM DIAMETER OF BEND Bar size Minimum Diameter 10mm to 25mm 5 bar diameter 28mm to 32mm 8 bar diameter 36mm 10 bar diameter 6. Bending 1. All reinforcements shall be bent cold, unless otherwise permitted by the Engineer. 2. Reinforcement partially embedded in concrete shall not be field- bent except as shown in the design drawings or as permitted by the engineer. DPWH | Bureau of Construction F CONCRETE WORKS C. CONCRETE 1. Mixing and Delivery ❖ Concrete may be mixed at the site of construction or at the batching plant. Mixer Capacity Mixing Time 1.5m3 not less than 60 seconds Greater than 1.5 m3 not less than 90 seconds F CONCRETE WORKS 2. Storage of Materials Cement and aggregates shall be stored in such a manner as to prevent their deterioration or the intrusion of foreign matter. Cement shall be stored, immediately upon arrival on the site of the work, in substantial, waterproof bodegas. The floor must be sufficiently elevated to deter dampness. Aggregates shall be stored separately from other foreign materials. F CONCRETE WORKS Aggregate Tests Samples of the fine and coarse aggregates to be used shall be selected by the engineer for test at least 30 days before the start of the concreting operations. No aggregates shall be used unless certified to have satisfactory passed all tests, and a written authority has been served for their use. Admixtures Admixture Shall Conform to Air-entraining admixtures ASTM C 260 Water-reducing admixture Retarding ASTM C 494. Water-reducing/retarding Water-reducing/accelerating DPWH | Bureau of Construction F CONCRETE WORKS 3. Conveying/ Transporting Buckets or Hoppers Manual or Motor Propelled Buggies DPWH | Bureau of Construction F CONCRETE WORKS 3. Conveying/ Transporting Chutes Pipes F CONCRETE WORKS 3. Conveying/ Transporting Conveyor Belt Concrete Pump DPWH | Bureau of Construction F CONCRETE WORKS 4. Depositing of Concrete a. Column Drop Chute Maximum Drop Height 1.50 meter or less PROPER IMPROPER DPWH | Bureau of Construction F CONCRETE WORKS DPWH | Bureau of Construction F CONCRETE WORKS b. Slab F CONCRETE WORKS c. Wall F CONCRETE WORKS 5. Compaction of Concrete Concrete during and immediately after placing shall be thoroughly compacted. Compaction shall be done by mechanical vibration. The intensity of vibration shall be such as to visibly affect a mass of concrete with a 3 cm slump over a radius of at least 50 cm DPWH | Bureau of Construction F CONCRETE WORKS 6. Construction Joints Construction joints shall be made only as shown in the Plans or as called for in the pouring schedule, unless otherwise approved by the Engineer. It shall be thoroughly cleaned of foreign matter and laitance. DPWH | Bureau of Construction F CONCRETE WORKS DPWH | Bureau of Construction  CONCRETE WORKS F A A1 L L/4 L/2 L/4 3 -16mm Ø TOP BARS 2 -16mm Ø ADD'L. BARS @ L/4 3 -16mmØBOTTOM BARS 2 -16mm Ø ADD'L. BARS @ L/2 TYPICAL BEAM DETAIL SCALE 1 : 10m 9-12mmØ MATTING BARS EQUALLY SPACED BOTHWAYS 4-16mmØ VERTICAL BARS W/ 9mmØ TIES, SPACED 5 @ 50mm, 5 @ 100mm, REST @ 200mm ON CENTERS 4-12mmØ 9mmØ STIRRUPS 350mm THK. CONCRETE FOOTING N.G.L. 4-12mmØ MAIN BARS W/ 9mmØ STIRRUPS NATURAL GRADE LINE 4-16mmØ VERTICAL BARS W/ 9mmØ TIES, SPACED 5 @ 50mm, 5 @ 100mm, REST @ 200mm ON CENTERS 9-12mmØ MATTING BARS EQUALLY SPACED BOTHWAYS SECTION PLAN WF (4" CHB) F CONCRETE WORKS 1. Floor Framing Plan 2. Typical Section of Concrete Slab F CONCRETE WORKS 7. Curing of Concrete All newly placed concrete shall be cured in accordance with this Specification unless otherwise directed by the Engineer. The types of curing methods are the following: 1. Water Method 2. Curing Compound 3. Waterproof Membrane Method 4. Forms-in-Place Method Quality Control Minimum Test Requirements: a) CONCRETE: 1. Design Mix a. Batching Plant – to be prepared byDPWH | Bureau of Construction the Supplier b. Jobsite – to be prepared by the contractor 2. Conduct Trial Mix (reference only) 3. Submit Samples for: F CONCRETE WORKS 3 Quality Control Minimum Test Requirements: a) CONCRETE: 1. Design Mix a. Batching Plant – to be prepared by the Supplier b. Jobsite – to be prepared by the contractor 2. Conduct Trial Mix (reference only) 3. Submit Samples for: a. Portland Cement 1- Q (Quality Test) for every 2,000 bags or fraction thereof b. Fine Aggregates: 1- Q (Quality Test) for every 1,500 cu.m. or fraction thereof 1- G (Grading Test) for every 75 cu.m. or fraction thereof c. Coarse Aggregate: 1- Q (Quality Test) for every 1,500 cu.m. or fraction thereof 1- G (Grading Test) for every 75 cu.m. or fraction thereof d. Water: 1- Certificate from Project Engineer DPWH | Bureau of Construction F CONCRETE WORKS Minimum Test Requirements: 3.e As work progresses, at least one (1) set of sample consisting of three (3) concrete cylinder test specimens, shall be taken from each class of concrete placed each day. Each set represents not more than 75 cu. m of concrete. The age strength test shall be 28 days, or where specified. G MASONRY WORKS - is a form of construction work equipped with stone, bricks, concrete, hollow clay tile, concrete block or tile, or other similar building units or material or a combination of these materials laid up unit and set in mortar. Concrete Hollow Blocks Concrete hollow blocks are classified as load bearing and non- load bearing blocks. 1 Requirements A. Strength Requirements a) Non load bearing concrete masonry units – ASTM C 129 - 100 mm thick Individual – 3.45 Mpa ( 500 Psi )  Concreting of column after block laying of walls DPWH | Bureau of Constructio n G MASONRY WORKS  DPWH | Bureau of Construc tion G MASONRY WORKS  Individual – 3.45 Mpa ( 500 Psi ) Average - 4.14 Mpa ( 600 Psi ) b) Load bearing concrete masonry units – ASTM C 90 Individual - 5.5 Mpa ( 800 psi ) Average - 6.9 Mpa ( 1000 Psi ) For Portland Cement, Fine Aggregates, Water and Steel Bars: -same requirements as in Concrete Works DPWH | Bureau of Construction H CARPENTRY & JOINERY WORKS 1 Requirements Quality of Materials All materials to be incorporated in the carpentry and joinery works shall be of the quality specified in the approved plans and specification. Before incorporation in the work, all materials shall have been inspected / accepted by the Engineer or his authorized representative.  Prior to enclosure of drywall partitions and ceiling, the following controls should be properly complied: a. Drywall Partition 1. Vertical and horizontal alignment 2. Material specification 3. Complete installation of Electro-mechanical rough-ins 4. Rigidly connected to the flooring, walls and at the bottom of the ceiling frames. 5. Appropriateness of tools to be used. DPWH | Bureau of Construction H CARPENTRY & JOINERY WORKS  5. Complete installation of roof framing and roofing 6. Appropriateness of tools to be used. DPWH | Bureau of Construction H CARPENTRY & JOINERY WORKS  DPWH | Bureau of Construction H CARPENTRY & JOINERY WORKS 1 Quality Control Minimum Test Requirements: 1-IR (Inspection Report for each material used)  DPWH | Bureau of Construction I FABRICATED MATERIALS & HARDWARES 1. WINDOWS A. Steel Casement Window B. Awning Window C. Jalousie Window D. Sliding Aluminum Framed Window E. Fixed Aluminum Framed Window F. Wooden Windows  3. Actual test the unit and make adjustments where required taking into consideration that all units are properly aligned and satisfactory operational. 4. Close the slat clips in a manner that the glasses are securely fixed. Permanently fix all the units with wood screws. DPWH | Bureau of Construction I FABRICATED MATERIALS & HARDWARES 2. DOORS A. Hollow Core Flush Door B. Panel Door C. PVC Door D. Glass Door E. Steel Door F. Others WOODEN DOORS  Installation 1. Frames shall be plumb set and squared in the concreting/masonry work, frameworking of walls or building partitions. 2. Frames shall be plumb set and squared in the concreting/masonry work, frameworking of walls or building partitions. 3. Locks of doors shall be fitted at the lock block, 1000 mm above the finished floor level. Locks shall be installed in conformity with the templates and instructions supplied with the locksets DPWH | Bureau of Construction I FABRICATED MATERIALS & HARDWARES  DPWH | Bureau of Construction I FABRICATED MATERIALS & HARDWARES Minimum Test Requirements: 1-IR (Inspection Report for each material used)  2. Fabrication of steel frames can be done in the field during erection of the building or at the shop. 3. When punching and drilling steel make sure that the hole drilled or punched is 1.5 to 3 mm greater than the diameter of the bolt to make it easy in inserting and bolts through it. 4. Verify if the welding work needs a partial or complete penetration. The metal surface is set in accordance with the shape needed in welding. Be sure that the metals are in their proper position before welding. DPWH | Bureau of Construction J ROOF FRAMING WORKS 1 Procedure 5. When the work is completed, inspect if it is welded in accordance with the penetration length and thickness needed in the construction. 6. Purlins are then placed equidistantly as specified in the plans. Purlins should have an angle strap and a sag rod to prevent lateral  DPWH | Bureau of Construction J ROOF FRAMING WORKS LENGTH OF WELD  not required for testing) DPWH | Bureau of Construction K ROOFING WORKS 1 Requirements ❖ Material Requirements 1. Corrugated and Plain Galvanized Iron Sheets 2. Roofing nails, Washers and Burrs  at the same plane. B. Installation of Roofing Sheets Installation of Roofing sheets with end laps shall start at the lower part of the roof. The sheets should have side laps of two-and-a-half (2-1/2) corrugations. Succeeding upper rows of corrugated G.I. sheets shall be installed in the same manner until the entire roof area is covered. Screw holes shall be drilled using a 5 mm (13/64”) diameter bit. Sheets should be handled carefully to prevent damage. DPWH | Bureau of Construction K ROOFING WORKS  b) Valleys Valleys shall lap at least 450 mm each way under the roofing sheets and shall be secured to the framework with galvanized nails. The nails are placed below the roofing sheets. Rivets along the side of the valley shall be fastened at every second corrugation. DPWH | Bureau of Construction K ROOFING WORKS c) Flashing Flashing, of gauge 26 plain G.I. sheets, unless otherwise specified, shall be installed along intersections of roofs and concrete or masonry walls. Flashing running parallel to sheet corrugations must have its edge turned down. Flashing across sheet corrugations or at an angle thereto, shall lap at least 250 mm and the edge of flashing turned down at each corrugation. d) Gutters  holes. A guide chord may be stretched out from end to end of the purlin to establish alignment. b. Drilling After lay outing, drilling points should be located at the crown every two other corrugations of the roofing material (G.I. Sheet) DPWH | Bureau of Construction K ROOFING WORKS c. Installation In the installation of J-Bolt, two (2) manpower is required to work concurrently. One will insert the bolt through the hole from the indoor and the other will fasten the nut out door.  required for testing) DPWH | Bureau of Construction L FINISHES 1 Requirements CERAMIC TILES ❖ Material Requirements a. Glazed Tiles and Trims b. Unglazed Tiles  scratch coat and setting bed. On masonry or concrete surface, first apply a thin coat with pressure, then bring it out sufficiently to a thickness not less than 10mm at any point to compensate for the major irregularities of the surface. Evenly rate the scratch coat to provide good mechanical key before the mortar mix has fully hardened. DPWH | Bureau of Construction L FINISHES ❖ Construction Requirements B. Installation Procedure Before the tile is applied the floor surface shall be tested for levelness or uniformity of slope by flooding it with water. Ceramic tiles shall be soaked in clean water prior to installation for a minimum duration of one hour. Determine and mark the layout of ceramic tiles, joint location and position of trims and fixtures so as to minimize  1. Layout 2. Apply a bond coat mix (Tile Adhesive) 3. Lay tiles true to profile 4. Keep straight w/ tile spacer DPWH | Bureau of Construction L Vitrified Unglazed Floor Tiles  E. Protection from Construction Dirt Grouting and Pointing DPWH | Bureau of Construction L FINISHES CEMENT FLOOR FINISH This Item shall consist of furnishing all materials, labor, tools and equipment in undertaking cement floor finishing where shown in the Plans and in accordance with this Specification. ❖ Material Requirements ❖Construction Requirements  3 DPWH | Bureau of Construction L FINISHES PEBBLE WASHOUT This Item shall consist of furnishing all materials, labor, tools and equipment required in undertaking the proper application of pebble washout finish as shown in the Plans and in accordance with Specifications. ❖ Material Requirements ❖Construction Requirements  1 2 3 4 5 DPWH | Bureau of Construction L FINISHES CEMENT PLASTER FINISH This Item shall consist of furnishing all cement plaster materials, labor, tools and equipment required in undertaking cement plaster finish as shown in the Plans and in accordance with Specifications. ❖ Material Requirements ❖Construction Requirements  3. Apply mortar mix with sufficient pressure 4. Trowel finish DPWH | Bureau of Construction L FINISHES 3 Quality Control Minimum Test Requirements: a) Floor & Wall Cement Plaster Finish -same tests for Concrete Works on Cement, Fine Agg. and Water  d. Silicon Water Repellant d. Storage e. Patching Compound e. Cleaning f. Varnish f. Workmanship g. Lacquer g. Method of Measurement h. Shellac h. Basis of Payment i. Sanding Sealer j. Glazing Putty k. Natural Wood Paste Filler DPWH | Bureau of Construction M PAINTING/ VARNISHING WORKS Surface Preparation  Appropriate platform, scaffolds and supports while working on elevated areas Quality Control Minimum Test Requirements: 1- Q (Quality Test) for each type for every 100 cans (4-Liters or 20-Liters can) or fraction thereof DPWH | Bureau of Construction N WATERPROOFING A. Types of Waterproofing ❖ Cement-base Waterproofing Cement-base waterproofing powder mix shall be cement- base, aggregate type, heavy duty, water-proof coating for reinforced concrete surface and masonry exposed to water. The aggregates are graded and sized so as to mesh perfectly  specifications requirement defined in ASTM D-41. Built-up membranes shall be made of smoothly woven fibers that are impervious to acid, heat, dampness and totting. They should permit complete penetration of asphalt compound or bituminous coating in the woven glass fiber. DPWH | Bureau of Construction N WATERPROOFING A. Types of Waterproofing ❖ Liquid Waterproofing Alternate material shall be elastomeric or other substance applied in liquid form and cured to an impervious membrane.  system inclusive of all sanitary sewer pipings and septic vaults where no public sewer exist, from the building to the point of discharge. ❖ Construction Requirements a. Installation of Pipes b. Sewer Connections and Clean-outs c. Inspection and Quality Control d. As-built drawings DPWH | Bureau of Construction O SANITARY WORKS Plumbing This Item shall consist of furnishing all materials, tools, equipment and fixtures required as shown in the Plans for the satisfactory performance of the entire plumbing system including installation in accordance with the latest edition of the National Plumbing Code and Specifications. b. Water Pipes, Fittings and Connections c. Inspection, Warranty Test and Disinfection d. Drainage System Test e. Water Test on System f. As-built Drawings DPWH | Bureau of Construction  DPWH | Bureau of Construction QUALITY CONTROL PROGRAM JOB CONTROL FORMS DPWH | Bureau of Construction