191N6526Q0039_Scope of Work_Waterproofing at Marine House.pdf

Unclassified

SENSITIVE BUT UNCLASSIFIED SENSITIVE BUT UNCLASSIFIED SENSITIVE BUT UNCLASSIFIED

US EMBASSY, NEW DELHI

STATEMENT OF WORKS

WATERPROOFING AT

MARINE HOUSE ROOF

1.0 BRIEF DESCRIPTION OF WORK:

1.1 The United States Embassy, New Delhi has a requirement to re-store roof waterproofing for Marine

House Roof.

1.2 Contractors are advised to visit the site, verify measurements as mentioned in the SOW.

1.3 Any ambiguity found later will be at the discretion of the contracting officer for any modification.

1.4 Complete waterproofing job shall be done by skilled/professional workers.

1.5 Project requires a qualified Roof Contractor to perform a restoration as per scope of work.

1.6 The contractor shall be given total 45 working days to complete this project.

2.0 GENERAL GUIDELINES

2.1 The Contractor shall provide all required labor, material (except the GFI), equipment, and supervision to complete the project.

2.2 Contractors are advised to conduct the site visit to understand the requirements and verify measurements.

2.3 Contractors are recommended to seek clarification regarding this statement of work and site conditions at the time of walk through from the COR of this project.

2.4 The contractors can write the unclear queries to the contracting office after the walk through.

2.5 Embassy contracting office will consult with COR and respond to all the queries in writing before the due date of the submission of quotes.

2.6 Embassy expects professional craftsmanship and supervision from the bidders.

2.7 The timeline for this project is 60 calendar days.

2.8 The contractor must adhere to the safety mandates explained in this document,

2.9 The contractor and his/ her staff must wear Personnel Protective Equipment (PPE) while at embassy construction site. Contractor can add cost of PPE to the bid and must comply with the 100% PPE guidelines at USG facilities. Contractors will be accountable for the delay caused by non-compliance.

2.10 No work will be allowed to perform at USG construction sites without the PPEs, and the contractor will be accountable for the delays caused due to the safety issues.

2.11 PPE includes steel toe shoes, protective goggles, hard hats, coveralls and COVID -19 protective masks.

2.12 The contractor shall include the cost of the PPEs and other logistical expenses to manage the safety and PPE guidelines while bidding.

2.13 The contractor will be held responsible and accountable for any deviations from the safety and PPE guidelines specified in this document.

2.14 All work shall be performed by skilled and competent crew.

2.15 The Contractor shall follow security and safety directions as mentioned in the statement of works and explained by the COR.

2.16 The Contractor shall submit the construction bar chart to the COR within 2 working days upon obtaining the letter to proceed from the contracting office.

2.17 The Contractor shall submit all the cut sheets / broachers and material samples for COR approval before delivery of material at site.

2.18 All materials shall be delivered, hoisted on the exterior and stored as per space allotted.

2.19 Contractor shall dispose of all the debris from the site and keep the site clean and in workable condition throughout the project duration.

3.0 SCOPE OF WORK FOR ROOF WATERPROOFING OF MARINE HOUSE (13500 sq.ft.)

3.1 Remove existing marble chips, pavers, felt layers complete with insulation, vermiculite etc. and reach up to RCC slab. (app. 12,700 sq. ft.) including servant quarter roof.

3.2 Contractor shall do necessary repair to the slab with recommended polymer mortar of SIKKA or

Fosrock or equivalent make.

3.3 After repair of RCC slab, provide a layer of form mortar layer mixed with waterproof compound

(SIKKA LATEX) as per manufacturer instructions, to make slop towards drains on entire slab. The slop shall be maintained as 2% i.e. 2.5” for every 10’-0”.

3.4 After curing the mortar layer, provide and install a layer of bitumen primer, followed by layer of hot bitumen once dried. The bitumen shall be laid or spread @ 1.7 kg/sq. mt. Then install bituminous felt (two layers) over the 85/25-grade hot bitumen. The felt shall be laid by touching the membrane and by heating the felt in accordance with manufacturer's recommendation to achieve continuous edge flow and complete bond. First layer of bitumen membrane shall be 4mm thick APP modified plastomeric bitumen non-woven polyester and the second membrane shall be 3mm thick.

The terminated end of bitumen membrane shall be done as per site condition requirement.

Note: Embassy will provide all required quantities of bitumen and membrane/felt (both 3kg & 4kg) for this project.

The longitudinal side of felt shall be overlap minimum 4 inches and end laps minimum 8 inches. All the gaps and overlaps/ joints shall be sealed with hot bitumen.

3.5 On top of second layer of felt a final coat of hot bitumen shall be done as per detail and standards.

3.6 Above the final layer of bitumen, provide a layer of mortar with chicken wire mesh in between slop toward drain. The slope shall be 2% towards rainwater drains and thickness of mortar shall be minimum 1” and any points.

3.7 Before the mortar is laid, contractor shall do the flood test (minimum 48 hrs.) of complete roof. 4” to 5” water shall be standing over the roof after placing the sand bags around to hold the water for

48 hours. Check for any leakage. Contractor shall repair the leak, if any before proceeding for next

3.8 The contractor shall provide and lay 300-micron polythene sheet of transparent color over the mortar layer and also over Polystyrene Insulation.

3.9 Provide and Install PVC drain board, DRENTEX protect 50 of TEXSA/DELTA makes over and above the polythene sheet.

3.10 On top of draintex, provide and install 2” (50 mm) thick inter lockable Extruded Polystyrene

Insulation. The insulation will be applied in parallel rows and all sides/end joints will be installed closely but not forced.

3.11 Over the insulation the contractor shall spread Filter Fabric all over the roof to cover the insulation.

3.12 Provide and install concrete pavers on top of filter fabric at every 4’-0” distance center to center.

The space between pavers shall be filled with 1” thick marble chips or gravel.

3.13 Provide and install ALUMINUM flashing (14-gauge) at the edges, where felt terminated with necessary anchors and silicon. Aluminum flashing shall be as per parapet design.

3.15 Provide and install drain cover (16”X16”X8”), made of stain-less steel bar and S/S screen/wire-mesh (10-gauge, stainless steel-316 grade) for all the drains so that no leaves can pass through.

4.0 WARRANTIES AND FLOOD TEST

a) Contractor’s warranty: Furnish a written warranty agreeing to repair / replace defective installation and workmanship causing leakage of water, deterioration of materials and other failures of the installed system, sealants, painting, coatings, and related work on this project, to perform as required within the warranty period. Warranty period is five years after date of the written final acceptance.

b) Flood Test : The contractor shall complete the flood test for recently waterproof roof. For testing at least 4” water to be filled and retained for 48 hours. Any leakage found shall be repaired appropriately.

5.0 MATERIALS/MAKES – GOVERNMENT SUPPLIED MATERIALS:

1. Required quantity of bitumen for entire project.

2. Form Blocks – 2” and 4” as per slope requirements

3. 3kg & 4kg bitumen membrane / felt.

4. Concrete Pavers

5. Marble Chips/Gravel

6. Extruded Polystyrene Insulation

7. Filter Fabric

CONTRACTOR PROVIDED MATERIALS:

1. Bituminous primer (STP)

2. Aluminum roof coating, as required.

3. Waterproof Compound- SIKKA LATEX, PENETRON

4. 300-micron polythene sheet

5. LPG bottle for heating bitumen.

6. Kettle with burner for melting bitumen

7. Cement for repair and mortar layering on top of membrane

8. Stone dust.

9. Drain Board

10. S/S Drain covers

11. Cement

12. Aluminum Flashing

The Contractor shall provide all remaining material to complete the job as per given scope of work.

Provide sample material for the approval from COR before using it in the project or before delivery of material at site.

The Contractor shall use material of brands or make as given or equivalent quality material only.

6.0 SITE CLEANING

6.1 Contractor shall broom clean the entire site and the storage area after the completion of the project and on each day at close of business.

6.2 The Contractor will paint the area of the exterior walls or other areas which will be affected during the project matching to existing paint.

7.0 CONTRACTOR’S RESPONSBILITY

7.1 The Contractor shall be responsible for the professional quality, technical accuracy, and the coordination of all construction and other services furnished under this contract. The Contractor shall correct or revise any errors or deficiencies in its construction and other services without additional compensation,

7.2 The Contractor shall identify a Project Manager/Supervisor who shall be responsible for the overall management of this Contract. Project Manager shall be qualified and have the experience in same type of job.

7.3 The Contractor is responsible for safety and shall comply with all local labor laws, regulations, customs, and practices pertaining to labor, safety, and similar matters. The Contractor shall promptly report all accidents resulting in lost time, disabling, or fatal injuries to the COR.

7.4 Embassy will provide water and power at site, but the Contractor shall be responsible for connection from the main source to project location.

7.5 All expenses towards mobilization at site and demobilization include bringing in equipment, workforce and materials, profit and overheads, dismantling the equipment, removal of debris, clearing the site etc. should be included in the rates quoted by the contractor. No separate payment on such expenses shall be entertained.

7.6 The Contractor should keep the site clean and accessible to Embassy employees all time.

8.0 SAFETY

In addition to the attached Accidental prevention clause contractor will be responsible for

8.1 Any miss-happening at the site due to negligence in the safety measures.

8.2 Contractor will provide all Personal Protective Equipment for the workers as per the requirement of the site. Work will be stopped in case proper protection equipment is not found with the workers and lapse of the time will at the part of the contractor.

8.3 Contractor will make sure that all the arrangements for the work are working conditions are safe in all respects. Under no circumstances Embassy shall be responsible for any incident happening on the site due to negligence of the contractor / worker.

9.0 GENERAL NOTES

9.1 Once the project starts, it is contractor’s responsibility to secure the roof against any kind of seepage / leakage to the floors underneath. Any damage / seepage / leakage occurred to the slab or to the other parts of the building while project is in progress will be contractor’s responsibility and will repair the damages matching to existing.

9.2 Contractor will be responsible for the safety of all the existing wires running on the roof during demolition phase.

9.3 Contractor will provide all the material required to complete the job in satisfactory manner except

Embassy supply items.

9.4 Contractor shall provide and use LPG gas kettle for heating of bitumen. Contractor shall arrange for fire extinguishers while the gas cylinder is in use at the site. Under no circumstance wood will be allowed for heating the bitumen. In case of any miss-happening Embassy will not be responsible.

9.5 The Contractor should arrange the visit of the professional in this field from manufacturer side time to time (once or twice throughout the duration of the project) to supervise the project during work in progress.

9.6 One qualified technical supervisor from contractor side should always be present on the site. He should be able to speak and understand English language.

9.7 All demolished material shall be removed from the site, unless otherwise specified, on daily basis.

The contractor will be entirely responsible for the disposal of all the trash and debris and will be the only one to attend to any fine or penalty imposed by city authorities for improper disposal. The contractor shall take all necessary precautions/protection and approval from local authorities for disposal of debris.

9.8 Working Hours: Working hours shall be 8.30 A.M. to 5.00 P.M. Monday to Saturday. No work shall be done on Sundays/holidays unless otherwise approved. Total 45 working days shall be given. No noisy work on Saturdays.

SAFETY STANDARDS TO BE FOLLOWED AT CONSTRUCTION AND RENOVATION SITES

Contractor:

Work Site Address:

Contractor Safety Officer Name:

Signature for Acceptance by the contractor:

Safety standards to be followed at construction and renovation sites AHA – Activity

HAZARD ANALYSIS

1. The contractor must document in the bid for the work how the control of each hazard will be implemented and maintained during the project by submission of a safety plan and activity hazard analysis (AHA) for high hazard activities. The POSHO or qualified Post representative must review the contractor's proposal and provide feedback to the responsible project manager and Contracting Officer prior to acceptance of the bid.

2. Any situation where in the work in progress can pose a threat to the user of work area in emergency, contractor shall ensure proper barricading (sturdy enough for the purpose) to avoid any risk.

COVID 19 PRECAUTIONS

1. Every worker on site shall wear a mask and gloves all the time.

2. Workers shall maintain social distancing – six feet - all the time.

3. Sanitize or wash your hands frequently.

4. No worker shall be in proximity with other worker for more than 10 minutes and that too with the mask and gloves on.

5. Contractor shall ensure temperature testing of all workers coming on site in the morning and randomly during entire day to make sure that no one is suffering from fever.

6. Any worker showing any symptoms of fever, cough and cold, body ache etc. shall not be allowed to work till he has been ruled out of being positive.

GENERAL

1. All workers on the work site must wear safety shoes on construction site. No worker with flip flops will be allowed to work at site.

2. All the workers should wear full clothes. No half pants and other non- appropriate clothing

(Dhoti) will be accepted.

3. Malba / trash accumulated on the site should be removed at a regular interval (if possible on daily basis) so that it should not pose any trip hazard.

4. Employees exposed to hazards created by different works environment shall be protected by personal protective equipment. Appropriate protective clothing for any operation varies with the size, nature and location of work to be performed.

5. In extreme hot conditions drinking water must be made available to the worker and working duration in exposed conditions should be scheduled accordingly.

6. It is the responsibility of the contractor to make available all the PPE (Personal Protective Equipment) as per the requirement of the work site and as directed by the COR. Any mishap due to negligence on the part of the contractor will be entirely contractor’s responsibility.

MACHINIST / WELDING JOBS

1. Hot work permits are required to be filled for each hot work to be performed on USG site.

2. Contractor shall follow attached standards regarding different types of welding to be done on the site.

3. All workers who are arc welding must use a full-face shield with #10 or darker lenses. No worker will be allowed to arc weld with sunglasses, no matter how dark the lenses.

4. All the workers working on grinding and sanding job should have approved face masks and goggles for face and eye protection.

5. Workers who handle heavy metallic material should have appropriate gloves and safety shoes as per the job requirement.

6. Lifting and shifting of the heavy material to be done with the help of appropriate machines.

7. Compressed gas cylinder shall be properly marked and should always be kept in standing positing with guard against fall.

8. Hoses connected to the cylinder should be in good condition.

9. In case Arc welding is done inside the premises proper ventilation should be arranged in the vicinity.

10. The Contractor should use welding shields during work to protect the people around against any potential vision hazard.

11. Always keep an approved fire extinguisher near the site of welding.

12. Workers working with metal sheets must wear appropriate gloves to avoid any cuts on the hands or mishap on the site.

13. Electrical connections for the welding set and the grounding for the same shall be done properly to the satisfaction of the embassy electrician. Please refer to the electrical section in the document.

LADDERS SAFETY

1. The Contractor will use aluminum or fiber glass ladders for all purposes. Wooden ladders are not allowed on the site.

2. Proper ladder for a specific job should be used (for example fiber glass ladders for electrical work etc.).

3. Damaged ladders or ladders with missing support, shoes etc. should not be used on the site.

4. Height of the ladder should be at least two feet above the required height for the work.

ELECTRICAL

1. All the equipment / machines to be used for the execution of the job should be properly grounded.

2. All the extension boards to be used at the site should have proper earthing.

3. All connections to any of the outlets should be through three pin plug. Direct connection of wires in not allowed on the site.

4. Damaged wiring/ cabling for the machines / tools to be used at site are not acceptable. The extension cord or wire with the machines should be one core.

5. Electricians working on the site should wear shoes with rubber soles and should use rubber gloves during execution of the work.

6. Any heavy equipment to be plugged in for the work should be done under supervision of the embassy electrician. Contractor on his own should not plug in heavy equipment.

7. No taped joint or undersize wiring is allowed at the site for the work.

CARPENTRY

1. Carpenters should have dust mask to protect them from the potential hazard from saw dust. In case sanding machine is used at the site the machine should have proper guards, and operators should have suitable PPE (personal protective equipment) with them. For e.g. safety goggles, safety shoes, gloves etc.

2. All the wood to be used at the site should be properly stacked at one side. It should not be scattered around and pose a threat for a trip hazard.

3. Entire site should be kept clean from the saw dust at the end of the day.

4. Carpenters shall use machine guards if at all machines are used at the site.

5. All the care should be taken to protect the flooring against any kind of potential damage.

6. All the drill machines or other electrical tools to be used at the site should be properly grounded and wired.

7. The Contractor should use proper tools and tackles for the execution of the work at site.

8. Nails and other sharp material which can pose a threat of accident should not be scattered on the site.

FIRE

1. The Contractor shall provide and place fire extinguishers as per the requirement of the site (as recommended by the COR).

2. No flammable material should be kept inside the premises at any given point of time.

LOCK OUT / TAG OUT

Lock out devices should be used during the testing of electrical points and wiring.

CONFINED SPACES

If at all the contractor has to work in a confined space he should contact the COR before proceeding with the work. The Contractor should arrange all the equipment as instructed by the COR to accomplish the job in a safe manner.

HEARING PROTECTION

Contractor should assure that all the workers working in noisy surroundings should wear earmuffs or other approved devices.

HEIGHT PROTECTION

Any work to be carried out over and above 8’-0” needs a sturdy metal pipe scaffolding to carry out that work. Ladder or any other arrangement needs to a preapproval from COR to be implemented on the site.

For any further clarification please contact POSHO (Post Occupational Safety and Health Officer) at #

011-24198136 OR APOSHO Ms. Vidushi Sharma at 011-24198714.