WORK SPECIFICATION BUILDING COMPONENT: STAIRCASE DENISA-MARIA BUCUROIU 4TH BK INTERNATIONAL

Transcription

1 WORK SPECIFICATION BUILDING COMPONENT: STAIRCASE DENISA-MARIA BUCUROIU 4TH BK INTERNATIONAL

2 Chapter : 1. Works specification Chap. Pg. : 1.-1/2 Contents Date : 12/05/ Contents 2. Extent 2.1. General 2.2. Building components 2.3. Design 2.4. Building site 2.5. Health and safety 2.6. External environment 2.7. Quality management 2.8. Planning construction work 2.9. Tests 3. General specifications 3.1. References 3.2. Materials and products 3.3. Implementation 3.4. Control 3.5. Relations to other works 3.6. Health and safety 4. Building component specification

3 Chapter : 2. Works specification Page : 2.-1/4 Extent Date : 12/05/ Extent 2.1. General The work includes the building parts and other works mentioned in point 2.2., and illustrated on drawings and specifically described in the Work Specification. The work also includes the regulation in the building case description and other works described in the tender list works. The directions in this Work Specification have priority over the directions in the Case Specification Building components The work includes all work and supplies needed for the full completion of the construction parts. The work contains the following components: 01. STAIRCASE TYPE1 02. RAILING SYSTEM TYPE 1 The following components, delivered by other contractor, is mounted as part of the current works: Impact sound panel type TSP 24 Project material shall be submitted for construction management early enough to review and any revisions can be performed before production begins. If comments mentioned above entail changes to the above project materials, a revised version will be submitted Design All the design material including drawings and specifications are undertaken by MAELSTROM ARCHITECTS. For design details, please refer to Part 4.

4 Chapter : 2. Works specification Page : 2.-2/4 Extent Date : 12/05/ Building site ADDRESS: Kronprinsensgade 1, corner with Albanigade, Odense C 5000 Before the construction starts, the contractor must submit a document with protective measures. It shall be forwarded to the construction management review, in two copies at least 10 working days before the construction starts. The document will be commented in 5 working days from the receipt. The implementation of the construction site arrangement follows the general conditions and the construction site plan. For more detail information, please refer to the construction site plan drawing. All deliveries and performances, necessary for the conducting work, and that is normally connected to the work, must be included in the contract. Transport, storage of materials and products must follow manufacturer and / or supplier instructions and conducted in such a way that materials and products are not harmed and so that the project material requirements for the finished works are met.

5 Chapter : 2. Works specification Page : 2.-3/4 Extent Date : 12/05/ Health and safety Hazards Identification: The products supplied are non-hazardous. Cutting using power tools can create dust, which could contain silica and sparks can be generated cutting reinforced and pre stressed products. Due to the size and weight of components, manual handling should be avoided. First Aid Measures: Air bone dust Inhalation: remove from exposure to fresh air Ingestion: remove from exposure to fresh air Skin contact: wash with plenty of water Eye contact: irrigate thoroughly with copious amounts of eyewash or clean water, seek medical attention. Fire fighting measures: Products are non-combustible. Accidental release measures: In the event of dust being released while cutting, wear respiratory protection and eye protection. Any release of dust does not present a significant environmental risk. Handling: Due to the weight and abrasive nature of the products, suitable gloves and protective footwear should be worn when handling. With the exception of infill blocks, manual lifting of the products should be avoided. Lifting operations must be planned and controlled by competent persons. Where the product has cast-in lifting points, these should be used. Exposure control / personal protection: Workplace exposure limits Total inhalable dust: 10 mg/m³ Respirable dust: 4mg/m³ Respirable silica: 0.3 mg/m³ Where the above limits will be exceeded, personal protection should be worn: respiratory protection. Personal protection: gloves, safety footwear with steel toecaps, eye protection and hearing protection with a recommended noise rating of 95 db 105 db. The risk of fire should be controlled when using power tools. Physical and chemical properties: Odourless, light grey, shaped components with a density in the range tones/m³. Stability and reactivity: Products are stable and non-reactive. Toxicological information: Airborne dust health effects Eyes: may cause irritation

6 Chapter : 2. Works specification Page : 2.-4/4 Extent Date : 12/05/2014 Skin: brief or occasional contact is unlikely to be harmful Inhalation: repeated inhalation of silica dust above the workplace exposure limit can lead to the development of silicosis Ingestion: unlikely to be harmful. For more information about Health and Safety please refer to Case Specification External environment The noise from the construction is allowed only between 08:00 and 20:00. For more information about the external environment please refer to Case Specification Quality management/control General The contractor must conduct the quality control after/during delivery on site, installation and finish of the work. The documented quality assurance must be in accordance with the general conditions, the work description and the tender control plan. The work has to be executed in correspondence with a first-class practice. It is assumed, that unspecified details are executed in every responsible and satisfactory way. The contractor must ensure the following: DELIVERY ON SITE CONTROL: no existent damage and the quality of the prefabricated concrete elements. INSTALLATION CONTROL: correct mounting of the prefabricated concrete elements, correct placing of the sound system decoupling. FINISH CONTROL: quality of the work, fix of the eventual deficiencies. OTHER: hand-over, user manual and drawing corrected as completed Quality documentation As documentation for the contractor s quality supervision and control of the works quality, the contractor must make an archive which includes documentation for the control of materials, delivery on site control, installation control, finish control and other controls in this working description such as, tender control plan.

7 Chapter : 2. Works specification Page : 2.-5/4 Extent Date : 12/05/ Operation and maintenance documentation The contractor must ensure the delivery of information about materials specification, expected live time, cleaning materials and methods and maintenance conditions. The documentation must be delivered at latest in the same time when the work is handed over Planning of construction work Please refer to the Construction Plan Schedule. The contractor must, before the start of the work, prepare the necessary work documents in the form of drawings, calculations, descriptions, specifications and work instructions that will ensure that the given specifications are withheld during the execution of the work. The work documents must be delivered for the project management s scrutiny on request. The work documents which the contractor must prepare in accordance with his services, will be commented upon within 5 working days from its reception Tests The concrete for the prefabricated elements must follow the slump test, the 7- days test and the 28-days test.

8 Chapter : 3. Works specification Page : 3.-1/1 General specifications Date : 12/05/ General specifications 3.1. References Codes and standards Comply with provision of following codes, specifications and standards, except as otherwise indicated. Standard safety rules for constructions Danish Standards, DS 409 Norm for concrete constructions Supplement Danish Standards, DS 411 Concrete materials Danish Standards, DS 481 Execution of concrete structures Danish Standards, DS 482 Aims at building site - General rules Danish Standards, DS 1012 Tolerances in construction - Use of dimensional tolerances Danish Standards, DS General guidelines and specifications SUPPLIER DIRECTIONS: Valid directions and guides from suppliers according to transportation, storing, protection, preparation, mounting and usage must be followed, unless specified in the project material. In the drawings and component specifications, DALTON PREFABRICATED CONCRETE STRAIGHT STAIRCASE, TYPE 2.1 is used as a suggestion and guideline for the staircase construction. J & P - Impact sound panel type TSP 24 is used as a guideline for the staircase acoustics design Materials and products Please refer to Part 4 Materials and products Implementation Please refer to Part 4 Implementation.

9 Chapter : 3. Works specification Page : 3.-1/1 General specifications Date : 12/05/ Control

10 Chapter : 3. Works specification Page : 3.-1/1 General specifications Date : 12/05/ Relations to other contracts The contractor has to make sure that other types of work which are important for his conditional execution of the contract, are executed accurately including observance of elevations, measurements, surface tolerances, - finish etc. Cooperation with other contractors is carried out as usual. It is expected, that the work has to be adapted and adjusted to the work of the other contractors so that the work is executed within several working procedures Health and safety Please refer to 2.5.

11 Chapter : 4. Works specification Page : 4.-1/4 Building component specifications Date : 12/05/ Building component specification PREFABRICATED CONCRETE STAIRCASE TYPE 01 EXTENT AND LOCATION The work includes all works and deliveries that are necessary for the total completion of the PREFABRICATED CONCRETE STAIRCASE TYPE 01. The work includes all works that are necessary for the total completion of the PREFABRICATED CONCRETE STAIRCASE TYPE 01, but delivered by other contractor: Impact sound panel type TSP 24 The location of the staircase is shown on the outline drawing. Please refer to drawing. REFERENCES TO DRAWINGS 1. Plans Basement floor plan Ground floor plan First floor plan Second floor plan Penthouse floor plan 2. Sections 3. Component drawings 4. Detail Drawings RELATIONS TO OTHER WORKS Work completed by other contractors prior component installation: Foundation 500 mm strip reinforced concrete at the required level Steel Structure The erection of the steel structure is done according to the drawings. Basement external wall 325 mm reinforced BS 8007:1987 concrete with anchor bolts Basement concrete floor 225 mm reinforced cast-in-situ concrete floor slab class A External wall 450 mm steel structure external wall Load-bearing internal walls 225 mm concrete wall

12 Chapter : 4. Works specification Page : 4.-2/4 Building component specifications Date : 12/05/ Work related to other contractors after installation: Doors Exterior doors 900 x 2100 mm Glass façade Double-glazed glass on steel mullions structure Elevator 2046 x 2056 elevator shaft DESIGN All the design material including the drawing and specification is undertaken by MAELSTROM ARCHITECTS. For the basis of this design please refer to drawings. MATERIALS AND PRODUCTS PREFABRICATED CONCRETE ELEMENTS Concrete typical 28 days strengths are 60N/mm² Concrete strength at transfer 30 N/mm² Water cement ratio 0.45 Maximum Reinforcement bend bar and mesh Finish: terrazzo with cutting edge selection and 50 mm wide strips in contrasting color 4 prefabricated concrete landing elements 280 x 1700/1955 x 4797 mm 4 prefabricated concrete landing elements 280 x 1495 x 4962 mm 4 prefabricated stair flight elements 1385 x 2495 mm, 10 steps 170 x 280 mm 4 prefabricated stair flight elements 1385 x 2800 mm, 11 steps 170 x 280 mm HANDRAIL Type: A1 Railing system built with square outer frames, brokers, balusters and legs. The system is fitted with circular tube handrail of a 40 mm diameter. The surface of the railing system will be galvanized. The handrail, besides the surface treatment will be carried out in wood. 4 railing system 2495 mm length 4 railing system 2800 mm length 7 railing system 2052 mm length 1 railing system 3442 mm length SOUND SYSTEM Impact sound panel type TSP for sound absorption from adjacent concrete components. The sound insulation panel type TSP consist of a self-adhesive, flexible,

13 Chapter : 4. Works specification Page : 4.-3/4 Building component specifications Date : 12/05/ insulating panel providing acoustic separation of the prefabricated concrete elements. Type: TSP 24 / 240 mm width / 17 mm thickness / 15 m roll length It comes as a roll mad of polyethylene foam with hot-melt adhesive on one side. IMPLEMENTATION Temporarily storage all prefabricated concrete elements until permanent connections and/or adjoining cast-in-place concrete and steel works has been completed and the framework is stable. Before the work starts, the foundation works, the steel structure works, the basement external wall works, the basement floor works, the external wall and the load-bearing internal wall surrounding the area of the staircase must be completed. Once these are completed and stable, stairs and landings are lifted and installed using lifting clutches located in cast inserts. Erection inserts may require cleaning prior to attaching lifting clutches and will require filling after use. The first landing is placed at the basement level, with support on the external walls 65 mm on each side. For connection details please refer to drawing. The flights are connected to the staircase landings according to the detail drawing. Please refer to drawing. The first landing at the Ground Floor level is fitted 100 mm inside the internal wall on each side. For connection details please refer to drawing. The above repeats until the work completes up to the Penthouse Floor level. When mounting the elements, the joining impact sound panel TSP is glued to the front face of each structural element. It is really important that the impact sound panel to be connected with no seams. It is recommended to glue over the joints with adhesive tape in order to ensure that no debris gets between the stairs and the staircase wall. After all the prefabricated concrete elements are completed, the railing system will be bolted through the thickness of the flights and landings. Type of bolt: nut and washer. Remove rubbish and debris resulting from precast concrete stair work from premises upon completion. SURFACES The prefabricated concrete elements will be given a finish to create a surface that is easy to clean and is visually attractive. The finish will be NORWEGIAN CALCITE-LIGHT TERRAZZO: white Norwegian marble in white mortar with a stone fraction between 4-8 mm. The final finish will consist of 50 mm wide strips in contrasting color against the tread. TESTS

14 Chapter : 4. Works specification Page : 4.-4/4 Building component specifications Date : 12/05/ The concrete for the prefabricated elements must follow the slump test, the 7-days test and the 28-days test. CONTROL Please refer to TENDER CONTROL PLAN 3.4 HEALTH AND SAFETY Please refer to 2.5

15 Chapter : 4. Works specification Page : 4-1/2 Building component specification Date : 12/05/2014 RAILING SYSTEM TYPE 01 EXTENT AND LOCATION The work includes all works and deliveries that are necessary for the total completion of the RAILING SYSTEM TYPE 01. The location of the railing is shown on the outline drawing. Please refer to drawing. REFERENCES TO DRAWINGS 1. Plans Basement floor plan Ground floor plan First floor plan Second floor plan Penthouse floor plan 2. Sections 3. Component drawings 4. Detail Drawings RELATIONS TO OTHER WORKS Work completed by other contractors prior component installation: Prefabricated concrete staircase type 01 DESIGN All the design material including the drawing and specification is undertaken by MAELSTROM ARCHITECTS. For the basis of this design please refer to drawings. MATERIALS AND PRODUCTS Type: A1 Railing metal system built with square outer frames, brokers, balusters and legs. The system is fitted with circular tube handrail of a 40 mm diameter. 4 railing system 2495 mm length 4 railing system 2800 mm length 7 railing system 2052 mm length 1 railing system 3442 mm length Materials shall be free from defects impairing strength, durability or appearance. Exposed surfaces throughout project shall have the same inherent texture and color for like locations. Fasteners shall be of high grade stainless steel and hidden from view whenever possible. The shapes, configurations and sizes will be carried out as detailed on drawings and this specification. Please refer to drawings.

16 Chapter : 4. Works specification Page : 4-2/2 Building component specification Date : 12/05/2014 IMPLEMENTATION Materials to be delivered to the job site in good condition and adequately protected against damage. Store on site in a location and manner to avoid damage. Stacking should be done in a manner that will prevent bending. Store material in a clean, dry location away from uncured concrete or masonry. Any protection on the railings during transportation should remain until railing is installed. Keep handling on site to a minimum. Exercise caution to avoid damage to railing finish. The railing system will be bolted through the thickness of the flights and landings. The landings and stair flights will be provided with special holes for the railing system. Type of bolt: nut and washer. Placement measurement of bolts is visible on the detail drawings. Please refer to drawings. SURFACES The surface of the railing system will be galvanized. The handrail, besides the surface treatment will be carried out in wood. TESTS Color and finish samples: Indicating each color and finish to be expected in completed work. Railings: Submit 50 mm long sample of each type railing with post and rails indicating construction, welded joints, rail end cap closure and finish. CONTROL Prior to date of substantial completion, examine railings and guardrails for damage. Repair or replace rails damaged by subsequent trades. Please refer to TENDER CONTROL PLAN 3.4 HEALTH AND SAFETY Please refer to 2.5