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TD/Del.Auth 1
STANDARD LETTER OF DELEGATION OF ARCHITECT'S AUTHORITY
Letter ref: ...............................
To:
Date: ...............................
[Contractor's Name) [Address]
Dear Sirs PROJECT:
[Description and Location] DELEGATION OF ARCHITECT'S AUTHORITY
Please be advised that pursuant to Article 3 of the Conditions of Contract, all orders issued under the hand of the persons named hereunder shall be deemed Architect's Directions or Instructions as the case may be. NAME Mr [Project Architect's Name)
FIRM RSP Architects Planners & Engineers (Pte) Ltd
Save as aforesaid, all other duties set forth under the Contract shall be performed by the Architect.
Yours faithfully
[Signature of Director named in the Contract] .............................................................................. RSP ARCHITECTS PLANNERS & ENGINEERS (PTE) LTD cc
Client Structural Engineer M&E Engineer Quantity Surveyor
Notes: 1.
At Tender Preparation Stage, inform the QS to insert the phrase "or any such other architect authorised by him in writing after the name of the Director in Article 3 of the Contract. If the delegation is to a project engineer for piling works, substitute the term 'architect' for 'suitable person' or 'engineer', whichever is more appropriate.
2.
This letter is to be signed by the 'Architect' named in the Contract and issued prior to or immediately upon Award of Contract.
3.
In the event of change of delegated person, immediately re-issue this letter accordingly.
Rev No. D00
Issue Date: 30 June 2021
Page C3.Doc1
QPL/TD/RA
ISSUES IDENTIFICATION & RISK ASSESSMENT FOR PROJECT PROJECT REF:
UPDATE ON:
PROJECT DESCRIPTION:
REVISION NO:
NO.
EXTERNAL ISSUES
INTERNAL ISSUES
INTERESTED PARTIES
RISKS
MITIGATION PLANS (TO ADDRESS RISKS)
OPPORTUNITIES
CAPITALISING PLANS (TO CAPITALISE ON OPPORTUNITIES)
Note: PA to review and update this tabulation during the course of the project. Rev No. B.00
Issue Date: 30 June 2021
Page C3.Doc.2
TD/SC 1 1/3
CHECKLIST OF ARCHITECT'S TENDER DRAWINGS (Apply as applicable to your project, check also for completeness of information items thereunder which are sometimes required but inadvertently omitted) Refer to RSP Drafting Manual for Drawing Number Schedule. THE PA SHALL CHECK OFF (✓) EACH ITEM AND SUB-ITEM AND FILE THIS CHECKLIST IN THE QEPLAN FILE 1
GENERAL INFORMATION:
2.
SITE PLAN:
3
Boundary Dimensions and Bearing, if known Fencing / Hoarding Setting-Out Dimensions Platform Levels, Contours or Spot Levels Existing Buildings Trees to be rfell / retained Existing and Proposed Paving Levels, Falls, Floor Levels Underground services such as Sewer Lines, Levels, Manholes Storm Water Drains Water, Power, Gas, Telephone Services Retaining Walls For A&A Works, Clear demarcation and information at interface between existing and new works
FLOOR PLANS: (Check inclusion of all exploded Plans, Basements, Decks, Mezzanines, Elevated and Underground M&E Rooms, e.g. Projector Rooms, Lift Rooms, Intermediate Maintenance Floors or Access Catwalks)
4
Job Title, Drawing Title & Number, Draftsman & Team Leader Names, Scales, Amendment Column. North Point, Legend and Drafting conventions (eg. symbols, hatch pattern, etc) are in accordance to CP83:Code of Practice for CAD Part 1 of 4
Clearance (width, etc) and radius which meets mandatory requirement from BCA, LTA, CBPU, etc Wall Setting-Out Dimensions, Wall Thickness Detail setting-out plan to show mandatory clearance required by BCA thickness of wall, finishes Column Centres and Overall Dimensions Angles Clear Opening Widths Section and Details Identification Duct Sizes Room and Area Identification Platform Levels, Floor Levels, Falls Floor Finishes Wall Finishes such as for Toilets, Kitchens, Bin Centres, above Sinks Handrails and Drain Gratings Services such as Fire Extinguishers, Drains, Meter Boards, DBs, Fire Hosereels, Exit & Directional Exit Signs, Standby Fire Hose, etc, Fire-fighting provisions For Addition & Alteration Works, Clear demarcation and information at interface between existing and new works Staircase thread / riser, handrail, ramp gradient / width
ROOF PLANS: (Check for inclusion of all Entrance Canopies, Skylights, Allowance for Maintenance Equipment e.g. Gondolas)
Direction and Fall Size, Direction and Fall of *Gutters Gutter Expansion Joints Downpipes and scuppers* Ladders, Railings, Parapets Flashing, Eave, Ridge, Valley Gutter Details* Details at vent shafts penetrating roof Waterproofing details
*
Footnote: With effect from 1 Nov 2005, no roof gutters shall be installed for any new development unless waiver from CBPD is obtained for scupper / gutter
Rev No. E.00
Issue Date: 30 June 2021
Page C3.Doc.3
TD/SC 1 2/3
5
REFLECTED CEILING PLANS:
6
SECTIONS:
7
Fire Access Panels and other Special Maintenance access Requirements Floor Lines Ceiling Lines Grid Lines Parapet, Roof Ridge Levels External Finishes Maximum Height of highest point (in AMSL) including all structures and fixtures (eg. cat ladder, water tanks, lightning conductor, etc)
SCHEDULES:
9
Existing and Finished Ground Levels Foundation Levels, Pavement Levels, Floor Levels Lift Pit Levels Overall Building Heights including top of Parapet or M&E Equipment Heights Clearance which meets mandatory requirements from BCA, LTA, etc Fire Compartment Walls and Enclosures Building Perimeter Sections – check building buffers/setbacks/restriction at eaves, structural overhangs Max Height of highest point (in AMSL) including all structures and fixtures (eg. cat ladder, water tank, lightning conductor, etc)
ELEVATIONS: (Include as necessary and developed Elevations, Internal Atrium Elevations, Shopfront Elevations, Walkway Elevations)
8
Suspended Ceiling, box-up, Method, Layout, Ceiling Height and Setting-Out Ceiling System, Material, Finish, Details Services - Lights, Air-Con, Sprinklers, PA System, TV Camera, Smoke/Heat Detector, Security, Sensors, Emergency Light Access Panel located in co-ordination with Services, Sufficiency in numbers & sizes and details Dimensions for precise location of all Services Fire-rating of false ceiling / box-up and fire-stopping material around opening / penetration Thermal / sound insulation
Finishes Schedule Window Schedule & Details (include as necessary: Louvre, Sunbreakers, Grilles) Door Schedule & Details (include as necessary Grilles, Architrave Details, Refuse Chamber Doors, Duct or M&E Access Door/Panels, Roof Access Doors, Servery Hatches) Curtain Wall Schedule & Details Cladding Schedules (Metal, Stone Cladding) Colour Schedules Hardware Schedules (eg. Ironmongery) Sanitary Ware, Fittings & Accessories Schedules Signage Schedules Interior Furnishing & Furniture Schedules Wardrobe/Kitchen Cabinet Schedules Interior finishing schedules, if applicable
DETAILS:
Toilet Details Staircase Details Waterproofing Plan and Details show area / type of waterproofing on horizontal / vertical surfaces Ancillary Structures - Bin Centre/Chamber, PowerGrid Substation, Guard House, Swimming Pool, Carpark Shelters, Walkways, Gates & Grillework, Fences, Screens, Planter Boxes Paving and the Pattern Details Precast Louvres/Ventilation Block Elevations & Details Plinth Details Lift-Car Details Cornices Details
Rev No. E.00
Issue Date: 30 June 2021
Page C3.Doc.4
TD/SC 1 3/3
9
DETAILS: (cont’d)
10
Railing Details Fixed Furniture – Street Furniture, Built-in Cabinetry, Letterbox Carpark Numbering & Road Markings Screening or other co-ordination Details relating to M&E Equipment, e.g. Bulkmeter Compartments, Fire Extinguisher/Hosereel Housing Project signboard with contractor PE’s design calculation (consider ss fixing, UV resistant artist impression print-out)
HOARDING Hoarding plan and details.
To include location and height of vertical / horizontal hoarding (esp. at atrium, high void area, glass canopy, etc) Material & Profile of hoarding (retail mall or showhosue will require higher end hoarding) Material, quality and total nos. of commercial sticker / graphics and warning signs “DANGER-KEEP OUT”, “NO TRESSPASSING” Width, material and location of gate openings Lighting intervals and overhead protection (where applicable) Review hoarding phases and sequences to ensure adequate safety measures provided with each phase, and that all services including drainage, M&E services, service access will be able to operate with each phase.
This is to ensure adequate safety measures provided and pleasant spatial experience while the retail mall / office still in operation. 11
ADDITIONAL DRAWINGS FOR PHASE, A&A OR EXTENSION WORKS (To show demarcation and connection information of existing and new works)
‘Scope of Work’ Plans to demarcate areas under Contractors’ scope Phase Completion Plans Details at Interface between Existing and Proposed Works
This List has been checked-off by:
Rev No. E.00
Issue Date: 30 June 2021
(Sign)
Page C3.Doc.5
TD/SC 2 1/2 TENDER DEVELOPMENT CHECKLIST OF ARCHITECT'S DETAILS & SPECIFICATIONS COMMONLY OMITTED This document lists some of the commonly omitted Architect's details and specifications which are sometimes overlooked at tender stage or which the Architect assumes that the QS would have allowed for in the normal course of the QS's work. The PA should address each of the following items and come to a clear understanding with the QS on what the Architect/Client requires. THE PA SHALL CHECK OFF EACH ITEM AND SUB-ITEM AND FILE THIS CHECKLIST IN THE QE PLAN FILE 1.
EXTERNAL WORKS 1.1 Bollards/Drain Gratings 1.2 Road Signposts, Reflective Mirrors at Road Bends 1.3 Painting of Carpark Lines, Numerals, Direction Signs 1.4 Flag Poles and Plinths 1.5 Cover Slabs and Steel Gratings to Drains, Removable Maintenance Slabs of Drain Conduits 1.6 Aeration Troughs and Drainage 1.7 Protective Wire Screening to Low Level Floodlights at Landscaped and Common Areas 1.8 External Wall facing material – ensure proper fixing method specifications; tiles as facing material to be avoided if possible. 1.9 Planters – aeration mats, vertical / horizontal drainage cells, gravel, geotextile, perforated drainage pipes & grating covers within planter, spout pipe 1.10 Swimming Pool - all necessary accessories specified 1.11 Trees shown as “to be felled” are indeed cleared by NParks Board for tree felling. 1.12 Expansion Joints detail and materials at RC footpath
2.
ROOFS 2.1 2.2 2.3 2.4 2.5 2.6 2.7
2.8 2.9
Rev No. E.00
Heat-treated glass to external situations exposed to weathering or laminated glass where safety against breakage and falling is needed. Reflective glass with daylight reflectivity beyond current code requirement shall not be used on any external surface of any window, door, wall or roof of a building. Throats at roof and eave horizontal overhangs. Sufficient eave/overhang projection to cater for "driving rain and wind" conditions. Sufficient means of ventilating sealed spaces in double roofs, timber floors, to prevent heat and moisture build-up. Adequate means of access (e.g. cat ladders) to M&E chambers and trap doors for maintenance of services within sealed roof spaces. Allowances for prolonged heavy downpour conditions and gutter flooding caused by downpipe chokage by: providing sufficient numbers and size of overflow spouts at gutter summit level, avoid back flow by ensuring level of perimeter wall is higher than spouts’ inverts providing rain water downpipe sections which are much larger than previous building requirement of "100mm2 for every 10m2 of roof surface measured on plan". provide sufficient gutter width and cross section provide sufficient nos. of rwdp RC flat roofs to be detailed with proper scupper drains, formed in the r.c. slab and with falls, structural gradient and expansion joints internvals / material specified. Maintenance catwalk or track with structural framing for gondolas to maintain curtain walling and repaint external facades.
Issue Date: 30 June 2021
Page C3.Doc.6
TD/SC 2 2/2 3.
INTERNAL WORKS 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16
3.17 3.18 3.19 3.20 3.21 3.22 3.23
Sound Baffles and Security Mesh within Suspended Ceiling Voids, especially between retail shop units and corridor areas where burglars have gained access to shop units from the common ceiling space of the adjacent unit. Beadings/Cornices at Joints between Ceiling and Wall of Different Finishes This detail is necessary to conceal the cracks at the joint that will appear some months after completion. Insect Screens to MDF Rooms This is an Authorities’ requirement and is sometimes a PowerGrid requirement for the PowerGrid Substation louvres (given verbally at TOP inspections). Column Protection and Angle Guards in Carparks and Commercial Kitchens Refuse Receptacles/Compactors Tiling-receiving Access Panels to Longbaths Access Panels to Ceilings for Plumbing & Sanitary, Water Heater Services, at all Cleaning Eyes Dividing Strips at Junctions of different Floor Finishes Mail Boxes Mirrors Curtain Tracks and Pelmets Minor Signages - Lettering, Directory Boards, External Logos Accessories for family toilet, accessible toilet, ambulant disabled toilet Security Grilles at Top Vent Openings of Refuse Chutes Burglars have accessed into apartment units through these vent openings. Toilet Walls must be Sufficiently Thick if recessed bathroom fittings (auto flush sensors, recessed towel dispenser, waste bins, toilet roll holders, soap dishes, etc.) are used. Where Recessed Housings for Thick M&E Equipment, e.g. Audio-Video Intercom System occurs at Walls, ensure provision of Mesh Panels at the back of the wall where the brick thickness is substantially reduced. This is to prevent plaster cracking that will occur if mesh panels are not provided. Overlap of mesh onto the unaffected brick should be minimum 100mm. Full Height Glazing and Glazing used as safety barrier must be designed by C&S Engineer or Contractor’s PE to withstand horizontal loading as stated in prevailing BCA-Approved Documents. Submission to BCA is required. Markings or Signs on Full Height Glasswalls and Unframed Glass Doors Plinth Provision to Letterboxes, Kitchen Cabinets, etc. Imperforated Triangles (safety features / warning signs) at floor intersections and on criss-cross escalators in accordance to CP 15. Fire-fighting Access Panels on building facades must be checked against the clearance size as per FSSD requirement. Specification to cover Contractor’s P.E. certification / endorsement to FSSD for special fire-rated material usage. Comply to prevailing regulations on use of glass at critical areas and above 2.4m height (eg. screens, shields, canopies and ledges).
This List has been checked off by: _____ (Sign) Rev No. E.00
Issue Date: 30 June 2021
Page C3.Doc.7
TD/SC 3 1/2 TENDER DEVELOPMENT CHECKLIST OF COORDINATION ITEMS COMMONLY OMITTED, RELATING TO M&E/ STRUCTURAL WORK This document assists the Project Architect to check that those commonly omitted items which each Consultant sometimes assumes is covered by another Consultant has been included. The list is not exhaustive and is to be used as a guide in general only as it does not cover details peculiar to each project. The PA is advised to address each of the items listed at a joint consultant meeting and subsequently to distribute to all parties the confirmations of which Consultant will supply the relevant information for each item. THE PA SHALL CHECK OFF EACH ITEM AND SUB-ITEM AND FILE THIS CHECKLIST IN THE QE PLAN FILE 1.
STRUCTURE - RELATED ITEMS: GENERAL 1.1 Waterstops Allowed for as a measurable item under Builders Work based on location and specifications by Structural Engineer. 1.2 Construction Joints and Expansion Joints Allowed for as a measurable item under Builders Work based on location and specification by Structural Engineer in co-ordination with Architect. 1.3 Fire Stops - between floors, as compartmentalisation elements, within suspended ceilings, and in raised floors Builders Work, specified by Architect. 1.4 Double Slabs above PowerGrid Substation - (PowerGrid requirement especially where there are services penetration from unit above, e.g. floor traps and cleaning eyes). To provide sufficient headroom between double slabs if maintenance is required. Builders Work, shown in Architect's drawings based on PowerGrid requirements. Also, left-in-situ formwork and side wall access panel may be a construction requirement which should be allowed for under Builders Work. 1.5 Concrete Stiffeners to Brickwalls (for half-brick walls at max. 5 metre horizontal intervals for stiffener and max. 3.5 metre intervals for lintel beams) Builders Work, based on Architect's specification on internal distances, and on Structural Engineer's specifications on column sizing and vertical and horizontal interval dimensions. 1.6 Sumps and Hatchboxes Builders Work, based on Structural Engineer's information. 1.7 Sewer Manhole Top level of manhole covers slightly higher than adjacent turfing if located in turfing area.
2.
M&E RELATED ITEMS 2.1 Penetration of Services through RC Wall Builders Work, based on information by M&E Engineer and Structural Engineer. 2.2 Sealing/Making Good of all Penetrations and fire-rating required (where applicable) Usually allowed for under Builders Work (Preambles) as an attendance on NSC Work. 2.3 Ceiling and Wall Access Panels Allowed for under Builders Work, shown in Architect's Details based on location, size information from M&E Consultant. Co-relation with Structural Engineer's beams, locations and depths is necessary for obstruction-free access. 2.4 Plinths and Catladders for M&E Equipment, e.g. Water Pumps and Tanks, Lift Equipment, Pool Pumps and Filters Allowed under Builders Work, based on M&E Engineer's equipment capacity and sizes and Structural Engineer's plinth design details. Any special vibration pads, support features by M&E Subcontractor. 2.5 RC Housings and Upturned Kerbs at R.C. Roof level for M&E Cables, Pipes and Ducts Allowed under Builders Work; co-ordinate with Structural and M&E Consultant on sizes and locations. Ensure sufficient specifications and details to adequately cover waterproofing aspects.
Rev No. E.00
Issue Date: 30 June 2021
Page C3.Doc.8
TD/SC 3 2/2 2.
M&E RELATED ITEMS (Cont'd) 2.6 Fire Rating of M&E Ductwork or box-up for M&E services / fire-fighting provisions May be allowed under Builders or M&E work, the latter is preferred. To provide PE’s certification. 2.7 Maintenance catwalk for maintenance and upgrading of sanitary plumbing, M&E services at high void area
3.
LIFT SERVICES 3.1 Cat Ladders and Access Panels to Lift Pits, Water Tanks, Pumps, Lift Motor Room, etc. Usually allowed for under Builders Work, shown in Architect's Details based on height/width information from M&E Consultant. 3.2 Corbels, Hoisting Beams and Lift Separator Beams to Lift Shafts Usually allowed for under Builders Work, based on information from M&E Consultant and Lift Subcontractor. 3.3 Structural Openings for Lift Door Openings, Hall Lantern, Indicator, Call Button Usually allowed for under Builders Work and structural drawings based on information from M&E Consultant and Lift Subcontractor. 3.4 Fire-Rated Ventilation Shaft/Duct - for Lift Shaft to External Air Usually allowed under Builders Work, shown in Architect's details based on internal duct size dimensions given by M&E Engineer.
4.
PLUMBING AND SANITARY SERVICES 4.1 RC Inspection Chambers and RC Hatchboxes within Raft Foundation Allowed under Builders Work in the BQ, based on Structural Engineer's details. 4.2 Cement Screeding and Tiling Work for Inspection Covers and Hatchbox Covers Covers are normally supplied and installed by Plumber, but finish over covers should be specified and allowed as Builder's Work. 4.3 Vent Collars for Vent Pipes and interconnection with roof waterproofing. Usually measured in Bills under Builders Works based on Architect's Details.
5.
ELECTRICAL SERVICES 5.1 Trenches, Gratings and PVC Lead-In Pipes with Draw Wires for PowerGrid Substation, Consumer Switchroom and interconnection with basement waterproofing. Measured under Builders Work, including sandfilling to trenches, based on information by M&E Engineer (sizes) and Structural Engineer (details). Subsequent cables within lead-in pipes by M&E Subcontractor. 5.2 Sealing of Openings in Riser Shafts using fire-stopping materials 5.2.1 Sealing of floor opening up to specified size (based on cable/tray size) or pipe sleeve diameter measured under Builders Works. 5.2.2 Usually, subsequent sealing of gaps within the remaining opening or within the pipe sleeve by Electrical NSC using fire-rated material is allowed under M&E Subcontract. 5.2.3 All sealant material for penetration through slabs to carry PSB/FSSB certification.
6.
SWIMMING POOL FILTRATION SERVICES 6.1 Stainless Steel Cat Ladder for Balancing Tank Allowed either under M&E Subcontract Work or Builders Work. 6.2 Water Tight Access Covers (including Tile/Screed Finish) to Backwash Holding Tank and Balancing Tank Usually under Builders Work, shown in Architect's Details or specified in specifications based on size/location information from M&E Engineer.
This List has been checked off by: _____(Sign)
Rev No. E.00
Issue Date: 30 June 2021
Page C3.Doc.9