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Stages for construction


Building

Retaining walls
Subsoil drainage
BUILDING


   Site works and setting out
   Accommodation, storage and security
   Detail building stages
Site works and Setting Out

   Contractors responsibility after being given
    possession and site layout plan and detail
    drawings necessary
   Commencing tasks:-
       Clearing the site
       Setting out the building
       Establishing a datum level
c)
LEVELING
   The land surveyor will
determine the original ground
level for the land and mark a
survey peg for drain, pipes,
cables and main sewerage
treatment plant (MSTP), also
the road complying with the     Land surveyor
Jabatan Pengairan dan           determine the
Saliran (JPS).                       OGL
Clearing the Site
   May involve:-
       Demolition of existing buildings (by experienced
        contractor)
       Grubbing out bushes and tress (by manual or
        mechanical means, or by specialist for the large
        tress)
       Removal of soil to reduce levels following to
        Building Regulation C1 (sterilize the top 300
        mm to contain plant life and decaying
        vegetation)
Topography of
the site and some
common
material on site
Removal of tree trunks
Grubbing of trees, shrubs and roots
Site clearing work carried out
Excavator heaping up top soil
Earthwork
operation
a) SITE BOUNDARY
The surveyor must to determine the site boundary
of the construction area to avoid trespass to the
another construction area.




      The boundary had determine
Setting Out the Site
1.   Establish a base line from which the whole
     of the building can be set out.
        Marked on site clearly so that it can be re-
         established at any time
        Using steel tape (30 meters and not stretchable is
         more suitable)
        Marked each corner with a stout peg
        Check on the right angle and correct lengths
         (advisable using different method)
Typical builder square
Setting out and checking methods
Setting Out the Site
2.   Set up profile board-after the main building
     lines
        Should set up clear of the foundations trench
         positions to locate the trench, foundations and
         walls
        Required at all trench and wall intersections
Typical profile board
Establishing a Datum Level
   All levels in a building are taken from a fixed point
    called a ‘datum’
   Should establish after the setting out and related to
    ordnance benchmark
   An arrow with a horizontal mark above the arrow
   The centerline of the horizontal being the actual
    level indicated on an ordnance survey maps
Sloping Sites
Three methods in reducing levels:-
  1.   Cut and Fill - usual method, the amount of cut
       will equal the amount of fill
  2.   Cut – Advantages of having undisturbed soil
       over the site, but having disadvantages of cost of
       removing the spoil from the site
  3.   Fill – Not to be recommended, deep foundation
       would be needed, the risk of settlement and the
       amount of fill should be limited to 600 mm
Sloping sites
Accommodation, Storage
and Security
Accommodation
   Regulations 1996 (Health, safety and welfare)
   Requirements defers due to numbers of site workers
    and duration of contract
   Staff accommodations usually:-
       Sectional timber huts
       Mobile caravan or cabins
   Facilities provided:-
       First aid, stretcher ambulance, first aid room, shelter and
        clothing, meals room, washing facilities and sanitary
        facilities
Storage
      Type of storage depend on:-
        Durability
        Vulnerability to damage
        Vulnerability to theft

 Examples..
  Cement and plaster (in bag form) – dry store free from
    moist air
  Aggregates and sand – clean firm base, separate
    different materials and grade, watch on moisture content
  Bricks and blocks – stacked in stable piles, covered
    adequately
Security and Protection-fencing
   To defines limit of site and acts as a deterrent to trespasser or
    thief
   To provide a physical barrier or visual barrier
   Should start at the beginning of construction
   Type depend on degree of security, cost, neighborhood and
    duration of contract
   At least 1.8m high
   Minimum number of access and with lockable barrier
   Standard fences – BS 1722
Typical fencing details
Cleft chestnut pale fencing
Chain link fence with concrete posts
Close boarded fence with concrete post
Security and Protection-fencing-
Hoardings
   Close boarded fences of barriers erected adjacent to
    a highway or public footpath
   Prevent unauthorized persons obtaining access to
    site and protect public from dust and noise
   Necessary to obtain written permission from the
    local authority to erect a hoarding (Highways Act
    1980)
Hoardings
   Two forms:-
       Vertical hoardings
           a series of closed boarded panels securely fixed to resist wind
            load and accidental impact load
           Can be free standing or fixed by stays by the external walls of an
            existing building
       Fan hoardings
           To protect persons from falling objects
           Place at a level above the normal traffic height and ensure any
            falling debris is directed back towards the building or scaffold
Typical free standing vertical hoarding
Typical fan hoarding
BUILDING STAGES
Order of construction
 Excavation and timbering
 Foundations
 Concrete floors
 Reinforced concrete frames
 Roofs
 Brickwork
 Internal fixtures and fittings
 Insulation
 Plumbing and wiring

Keeping an eye on things

   If you are managing the project, you have to keep a close eye on the quality of the
    work and pick up problems quickly. For example, if the wrong wall framing is going
    in, it needs to be sorted before the wall linings go up.
   You, the builder or the project manager will need to ensure that:
   Materials are checked off when they arrive to make sure they are what is ordered
    and required.
   Timber is of the specified treatment type and at specified moisture levels.
   The house is set out correctly on the site.
   Plans and specifications are followed.
   Materials are installed to manufacturers’ instructions.
   Finished construction is protected from the weather.
   Even if you are not managing the project, you may well be taking a keen interest in
    progress. If you spot anything that does not look right, bring it up immediately with
    the builder. It would be better to replace a few bricks that are the wrong colour than
    wait until the house is finished before pointing it out. Most things that go wrong are
    simply mistakes which your builder would prefer to know about sooner rather than
    later.
Excavation and Timbering
 Before a foundation can be laid, it is necessary
  to excavate a trench of the required depth and
  width (by hand or mechanical excavator)
Timbering – term used to cover temporary
  supports to the sides of excavations and is
  sometimes called planking and strutting

   Type and amount – depend on the depth, nature
    of subsoil, weather conditions and duration
Typical example of trench excavations
Trench excavation
FOUNDATIONS
   Foundation is the base on which a building rests and its
    purpose is to safely transfer the load of a building to
    suitable subsoil
   Building regulations :-
       Safely sustain and submit to the ground the combined
        dead and imposed loads so as not to imposed any
        settlement or other movement in any part of the building
        or of any adjoining buildings or works
       Be a such a depth, or be so constructed, as to avoid any
        damage by swelling, shrinkage or freezing of the subsoil
       Be capable of resisting attack by deleterious material, such as

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Stages in Construction

  • 2. BUILDING  Site works and setting out  Accommodation, storage and security  Detail building stages
  • 3. Site works and Setting Out  Contractors responsibility after being given possession and site layout plan and detail drawings necessary  Commencing tasks:-  Clearing the site  Setting out the building  Establishing a datum level
  • 4. c) LEVELING The land surveyor will determine the original ground level for the land and mark a survey peg for drain, pipes, cables and main sewerage treatment plant (MSTP), also the road complying with the Land surveyor Jabatan Pengairan dan determine the Saliran (JPS). OGL
  • 5. Clearing the Site  May involve:-  Demolition of existing buildings (by experienced contractor)  Grubbing out bushes and tress (by manual or mechanical means, or by specialist for the large tress)  Removal of soil to reduce levels following to Building Regulation C1 (sterilize the top 300 mm to contain plant life and decaying vegetation)
  • 6. Topography of the site and some common material on site
  • 8. Grubbing of trees, shrubs and roots
  • 9. Site clearing work carried out
  • 12. a) SITE BOUNDARY The surveyor must to determine the site boundary of the construction area to avoid trespass to the another construction area. The boundary had determine
  • 13. Setting Out the Site 1. Establish a base line from which the whole of the building can be set out.  Marked on site clearly so that it can be re- established at any time  Using steel tape (30 meters and not stretchable is more suitable)  Marked each corner with a stout peg  Check on the right angle and correct lengths (advisable using different method)
  • 15. Setting out and checking methods
  • 16.
  • 17. Setting Out the Site 2. Set up profile board-after the main building lines  Should set up clear of the foundations trench positions to locate the trench, foundations and walls  Required at all trench and wall intersections
  • 19. Establishing a Datum Level  All levels in a building are taken from a fixed point called a ‘datum’  Should establish after the setting out and related to ordnance benchmark  An arrow with a horizontal mark above the arrow  The centerline of the horizontal being the actual level indicated on an ordnance survey maps
  • 20. Sloping Sites Three methods in reducing levels:- 1. Cut and Fill - usual method, the amount of cut will equal the amount of fill 2. Cut – Advantages of having undisturbed soil over the site, but having disadvantages of cost of removing the spoil from the site 3. Fill – Not to be recommended, deep foundation would be needed, the risk of settlement and the amount of fill should be limited to 600 mm
  • 23. Accommodation  Regulations 1996 (Health, safety and welfare)  Requirements defers due to numbers of site workers and duration of contract  Staff accommodations usually:-  Sectional timber huts  Mobile caravan or cabins  Facilities provided:-  First aid, stretcher ambulance, first aid room, shelter and clothing, meals room, washing facilities and sanitary facilities
  • 24. Storage  Type of storage depend on:-  Durability  Vulnerability to damage  Vulnerability to theft Examples..  Cement and plaster (in bag form) – dry store free from moist air  Aggregates and sand – clean firm base, separate different materials and grade, watch on moisture content  Bricks and blocks – stacked in stable piles, covered adequately
  • 25. Security and Protection-fencing  To defines limit of site and acts as a deterrent to trespasser or thief  To provide a physical barrier or visual barrier  Should start at the beginning of construction  Type depend on degree of security, cost, neighborhood and duration of contract  At least 1.8m high  Minimum number of access and with lockable barrier  Standard fences – BS 1722
  • 26. Typical fencing details Cleft chestnut pale fencing
  • 27. Chain link fence with concrete posts
  • 28. Close boarded fence with concrete post
  • 29. Security and Protection-fencing- Hoardings  Close boarded fences of barriers erected adjacent to a highway or public footpath  Prevent unauthorized persons obtaining access to site and protect public from dust and noise  Necessary to obtain written permission from the local authority to erect a hoarding (Highways Act 1980)
  • 30. Hoardings  Two forms:-  Vertical hoardings  a series of closed boarded panels securely fixed to resist wind load and accidental impact load  Can be free standing or fixed by stays by the external walls of an existing building  Fan hoardings  To protect persons from falling objects  Place at a level above the normal traffic height and ensure any falling debris is directed back towards the building or scaffold
  • 31. Typical free standing vertical hoarding
  • 33. BUILDING STAGES Order of construction  Excavation and timbering  Foundations  Concrete floors  Reinforced concrete frames  Roofs  Brickwork  Internal fixtures and fittings  Insulation  Plumbing and wiring 
  • 34. Keeping an eye on things  If you are managing the project, you have to keep a close eye on the quality of the work and pick up problems quickly. For example, if the wrong wall framing is going in, it needs to be sorted before the wall linings go up.  You, the builder or the project manager will need to ensure that:  Materials are checked off when they arrive to make sure they are what is ordered and required.  Timber is of the specified treatment type and at specified moisture levels.  The house is set out correctly on the site.  Plans and specifications are followed.  Materials are installed to manufacturers’ instructions.  Finished construction is protected from the weather.  Even if you are not managing the project, you may well be taking a keen interest in progress. If you spot anything that does not look right, bring it up immediately with the builder. It would be better to replace a few bricks that are the wrong colour than wait until the house is finished before pointing it out. Most things that go wrong are simply mistakes which your builder would prefer to know about sooner rather than later.
  • 35. Excavation and Timbering  Before a foundation can be laid, it is necessary to excavate a trench of the required depth and width (by hand or mechanical excavator) Timbering – term used to cover temporary supports to the sides of excavations and is sometimes called planking and strutting  Type and amount – depend on the depth, nature of subsoil, weather conditions and duration
  • 36. Typical example of trench excavations
  • 38. FOUNDATIONS  Foundation is the base on which a building rests and its purpose is to safely transfer the load of a building to suitable subsoil  Building regulations :-  Safely sustain and submit to the ground the combined dead and imposed loads so as not to imposed any settlement or other movement in any part of the building or of any adjoining buildings or works  Be a such a depth, or be so constructed, as to avoid any damage by swelling, shrinkage or freezing of the subsoil  Be capable of resisting attack by deleterious material, such as