CONSTRUCTION METHOD STATEMENT
This method statement is prepared on the basis of the project description that was issued issued;; it gives gives a suggest suggestion ion of our genera generall approa approach ch to the construc constructio tion n and manag managem ement ent of the projec project. t. Incorp Incorpora orated ted are our intent intention ionss for manag managing ing and sustaining the project and the particular approaches that will be taken for certain key aspects. Pre-start Investigations Following to commencement of site works, an external survey will be carried out to confirm the existing site levels, extent of any existing services and the condition of the existing surroundings. otification of the project commencement will be issued to all !tatutory "uthorities, advising them of the construction works. Security and Site Estabis!"ent Fencing will be erected on the site boundary to secure it during the contract period. These fences will be maintained and modified during the contract to suit the phasing of the works. !ite office and welfare facilities will be established on site. Temporary Temporary site accommodation and welfare facilities will comprise of the #uilding $anagers office, !urveyor%s office, $eeting and Induction room, &anteen and 'est 'estro room om faci facili liti ties es etc. etc. Thes Thesee will will be erec erecte ted d on hard hard(s (sta tand ndin ings gs with within in the the contractor%s working area. Storage and Handing The contractor%s site area will provide the storage area for all plant and materials delivered to site. $aterials will be stored within the building. $ore vulnerable materials)e*uipment materials)e*uipment will be stored in secure containers. Sco#e o$ Met!od State"ent The method statement relates to the preparation of site, construction of foundation and superstructure for a research building located in !t "nns +ort of !pain The scope of works comprises the following •
-eneral arthworks
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&onstruction of foundation
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&onstruction of building frame superstructure
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&onstruction of roof
Construction Ti"e !ince this project involves earth works the weather would automatically be the controlling factor on duration. xcavation and foundation works cannot be carried out effectively in unfavorable weather conditions. If the weather remains favorable throughout the expected duration then the project would be completed on schedule. Fabrication and rection of the columns, beams braces and shear walls can be carried out in normal times.
!tage / of the project, comprising of the construction of pad and strip foundations and retaining walls would be completed over a period of /0 weeks depending weeks depending on the weather situations. !tage 1 of the project involves assembling the building frame ) superstructure beams, columns, shear walls, composite flooring, etc. which is estimated to take 2 weeks. !tage 3 of the project would include the fitting out, site clearance and preparation for handover. This is expected to take another 4 weeks. The overall duration of the project is estimated at around /0(/1 months. Construction Procedures Procedures The se*uence of construction is summari5ed in the following topics a. Tendering b. Initial 6orks 6orks c. &learing and grubbing d. !ub(structure &onstruction e. xcavation f. &onstruction !afety g. !uperstructure h. !uper structure safety i. !caffolding and Temporary works j. 7a 7ariations k. Internal 6orks l. !ervices
m. Fitting(8ut and 9andover n. xternal works o. &ommissioning Tendering The The tend tender er prog progra ram m woul would d indi indica cate te the the propo propose sed d timi timing ng and and se*u se*uen enci cing ng of operations necessary to achieve project completion. Initia %or&s The &ontractor%s offices and welfare facilities will be set(up within the contractor%s site area designated on site. The temporary hoarding and fencing will be erected around the site before work commences and maintained throughout the +roject. There will be separate site vehicle and pedestrian gates into the contractor%s site compound area. Cearing and 'rubbing The site will be cleared of any trees, shrubs, stumps, rubbish and other unwanted material from site. The top 300 mm of top soil will also be removed to facilitated further construction. It will be stored on site for topsoil regeneration and the end of the construction. Sub-Structure The sub structure would consist of +ad foundations to support column loads, strip foot footin ing g to supp suppor ortt shea shearr wall walls, s, and and grou ground nd beam beamss to supp suppor ortt wall wall load loads. s. Foundations are to be stepped to avoid excessively deep excavations, and the disturbance it shall pose to the existing structure .The site is located on sloping and restricted land therefore the use of mini excavators and loaders would be used to carry out the excavation works on the area ,all miscellaneous e*uipment shall be in accordance with the reduction in earthworks disturbances to the existing building. "ll "ll exca excava vate ted d soil soil is to be rem removed oved and and disp dispos osed ed off( off(si site te beca becaus usee of site site restrictions .'eady mix concrete and pump trucks would provide concrete to the site. Sub-Structure Construction Se(uence The progression of sub structure activities is as follows /. 'emoval of top soil. 1. !et out the structural grid and locate foundation &entre points 3. xcavation of trenches for Foundations :. re rection ction of form formwork work for the castin casting g of founda foundations tions
. +lace +lace and tie re rebar bar for fou founda ndatio tions ns 4. &ast insitu of foundations. <. 'e(use of excavated trench material as fill for foundation.
Sub-Structure Sa$ety Consideration xcavation works always present ha5ards to workers due to a number of reasons including falls, slope destabili5ation, falling loads, and incidents involving mobile e*uipment. "s result several safety consideration are proposed to minimi5e to the risk to the safety and welfare of workers. !ome of these safety considerations include
/. "ll spoil from the excavation should be located at least /. meters away meters away from the edge of the excavation until disposal off(site . The depth of the retaining wall excavation is 1. meters so meters so the edge of the spoil heap should be 1. meters away. meters away. This is to reduce the risk of surcharging which puts additional stresses on the excavation slope. 1. =oose boulders should be pushed into the spoil heap to prevent them from rolling down into the excavation and causing injury 3. 7ehicle 7ehicle and machinery)e*uipment must be planned so as to maintain a safe distance from the excavation edges at all times. :. 6orkers 6orkers becoming trapped between the excavated face and the retaining wall or shuttering. . dge protection would must be provided as the excavation is greater than 1 meters to prevent fall of human or e*uipment into the excavation 4. 6here plant is dumping material into the excavation, suitable stop blocks and a banks man must be provided. <. " properly constructed access must be provided, i.e. a walkway at least 400 mm wide, with guard rails and toe(boards for employees whenever they are to cross a trench
)* The provision of barriers and)or fencing must be provided to keep the public away from the site. Su#er Structure
/. Twelve Twelve >/1?, 6 /1 x 4 universal steel columns are necessary to support the structure. These columns would be pin connected to reinforced concrete piers. The roof diaphragm would consist of 6/0 x: main beams and w/0x 11. :. The roof diaphragm would be structurally completed by 0.0/m dia. pipes around the perimeter of the roof. . There would be four shear walls on each corner of the building which would be fixed connected to the slab. These rectangular shear walls would run from the base of the strip footings to the beams overhead. 4. The structural steel frame will be erected using a mobile crane. This crane will also help position all the roof elements safely. safely. The roof diaphragm construction will commence once the steel frame has been erected. xternal independent scaffolding will be erected where re*uired to provide safe access for the roofing. $uch of this would be b e carried out via mobile elevated work platforms. The roof covering installation will commence once the roof diaphragm has been completed. Su#erstructure Construction Se(uence The order of construction of the building superstructure frame is as follows /. rection of steel columns on reinforced concrete pillars using base plate connections &onnection of main and secondary beams +lacement of composite deck sheeting +reparation of reinforcement reinforcement and formwork for construction of shear walls and. &omposite flooring <. &onstruction of shear walls and composite floor 2. Fixing of angle cleats and @ purlins to steel joist A. &onnection of roof sheeting to @ purlins /0. Fire proofing of primary elements /1. &onstruction of external walls to enclose building. xternal walls would have an exposed brickwork finish on the inside. /3/:. Installation of gla5ing . Su#er Structure Sa$ety Considerations /. =ift e*uipment
1. "ny plant used to lift materials and support e*uipment must comply with the =ifting 8perations and =ifting *uipment 'egulations /AA2. The lifting e*uipment must always have a sufficient load lifting capacity for the task. 3. =ifting operations must always be planned with care. !pecial consideration should be given to B The ability of the ground to support the lifting e*uipment and the load B The load and the working radius anticipated B "ny extra loading on the adjacent ground that could affect the excavation B The The need need alwa alway ys to use use the the corr correc ectt lift liftin ing g atta attach chme ment ntss and and lift liftin ing g e*uipment, such as chains and shackles. Sca$$oding and Te"#orary +or&s &onventional scaffolding, where re*uired will suit the nature, location and t ype of the particular operations. B "ll scaffolding scaffolding will be securely tied to the structure and will include suitable ladder access.
B !caffolding will be provided, erected and maintained in accordance with all current statutory regulations. B !uitable guard railing will be utili5ed to prevent falling from unprotected edges of the excavations, upper floors and staircases as applicable. B o person other than certified competent scaffolders scaffolders will be permitted to erect, alter, adapt or dismantle any conventional scaffolding.
Interna %or& /. Internal finishing trades will commence once a weather tight environment has been achieved within the building. 1. The wall and ceiling finishes will be completed ready for final fixtures and fittings after the floor tiles have been laid. Services /. " detailed fabrication, delivery and installation schedule will be prepared by the $echanical and lectrical contractor, upon instructions to proceed. The high level conduits and pipework above ceiling level will be installed using safe access e*uipment.
1. Installation of light fittings, smoke detectors and fire alarm systems will be coordinated with the suspended ceiling works. +ower and water supplies would be introduced to the building at this stage.
,itting-Out and Handover /. Temporary Temporary protection to floor and wall finishes will be removed once the installation of all fixtures and fittings has been completed. 1. The building will be handed over to the &lient during the last two weeks of the construction period. !nagging, cleaning and inspection will be undertaken room by room and once completed each room will be secured in advance of the final handover. 3. The site offices and compound will be also removed during the last two weeks of the project. Temporary emporary site services will be isolated, e*uipment cleared, offices and plant removed prior to handover. Eterna %or&s The hard and soft landscaping will be undertaken once the building envelopes have been completed all access access scaffolding scaffolding has been removed. Co""issioning The client will be indemnified for a specified period post the commissioning of finished structure during which time inspections and appropriate alterations will be carried out to meet contract re*uirements. Concusion This method statement aims to establish the re*uirements for each stage of the project. The detailed detailed methodology enables efficient efficient execution of the works works involved in optimum time, employing the most viable and safe methods to the satisfaction the client whilst meeting all stipulated and relevant codes and specifications.
