SOW for Roof Waterproofing at 26 A B AMRITA SHERGILL MARG.pdf

US EMBASSY, NEW DELHI

STATEMENT OF WORKS

FOR

ROOF WATERPROOFING AT 26-A/B AMRITA SHERGILL MARG

1.0 BRIEF DESCRIPTION OF WORK:

1.1 The United States Embassy, New Delhi has a requirement to re-store roof waterproofing for 26-A/B Amrita Shergill Marg.

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 jobs 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 requirement and verify measurements.

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

2.4 The contractors can write the uncleared queries to the contracting office after the walk thru.

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 45 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 the PPE guidelines 100% at USG facilities. Contractor will be countable 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 26-A/B AMRITA

SHERGILL MARG (13000 sq.ft.)

3.1Remove existing marble chips, pavers, felt layers complete with insulation, vermiculite etc. and reach up to RCC slab. (app. 13000 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 makes.

3.3 After repair of RCC slab, provide a layer of form concrete or 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 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 polyster 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 quantity of bitumen for this project.

Note: 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 details 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 Once mortar dry, 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 proceed 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.

3.10On 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.

3.12Provide 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. Concrete Pavers

4. Marble Chips/Gravel

5. Extruded Polystyrene Insulation

6. Drain Board

Contractor provided materials :

1. 4mm and 3mm thick APP modified bitumen, non-woven polyester felt.

2. Bituminous primer (STP)

3. Aluminum roof coating, as required.

4. Filter Fabric

5. Waterproof Compound- SIKKA LATEX OR Equivalent make

6. 300-micron polythene sheet

7. LPG bottle for heating bitumen.

8. Kettle with burner for melting bitumen

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

10. Stone dust.

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

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

Contractors shall use material of brands/make/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 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 including 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 Contractor should keep the site clean and accessible to Embassy employee all time.

8.0 SAFETY

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

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

6.2 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 are not find with the workers and lapse of the time will at the part of the contractor.

6.3 Contractor will make sure that all the arrangements for the work are working conditions are safe in all respect. Under no circumstance Embassy will be held responsible for any incident happen on the site due to negligence of the contractor / worker.

9.0 General Notes

9.1 Once the project starts, it is the 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 the 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 a satisfactory manner except Embassy supply items.

9.4 Contractor should provide and use LPG gas kettle for heating of bitumen. The 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, the Embassy will not be responsible.

9.5 Contractors 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 the 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 precaution/protection and approval from local authorities for disposal of debris.

9.8 Working Hours

• Working hours should be 8.30 A.M. to 5.00P.M. Monday to Saturday. No work shall be done on Sundays/holidays unless otherwise approved. A total of 45 working days shall be given.

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 is 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. Employee 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 made 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 permit is required to be filled for each hot work to be performed on USG site.

2. Contractor shall follow attached standards regarding different type 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 sun glasses, 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 handling the 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. Contractor should use welding shield during the 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 electrical section in the document.

Ladders Safety

1. 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 supports, 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 operator 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. Carpenter 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. 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. 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

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

Confined spaces

1. If at all contractors has to work in a confined space, he should contact the COR before proceeding with the work. Contractors should arrange all the equipment as instructed by the COR to complete the job in a safe manner.

Hearing Protection

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

Height Protection

1. 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.