Ct presentation 2
Transcript of Ct presentation 2
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CONSTRUCTION TECHNOLOGY\ CHAI JIA ERN 0324653 \ NA YONG YI 0324458 \\ TEE WAN NEE 0325074 \
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ISSUES TO BE TAKEN INTO CONSIDERATION
BEFORE CONSTRUCTION
ACCESSIBILITY TO SITE SERVICE
WATER TABLE SITE CLEARANCE
SITE INVESTIGATION
SUBSOILS
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TEMPORARY WORK
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ACCESSIBILITY TO SITE- Consideration on how the
vehicles will enter and exit the site.
- Condition of road
- If no suitable accessibility, temporary road is needed.
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- Knows the building around the construction site
- To reduce disturbance to the neighbors building ( noise )
- To guarantee the safety
SITE INVESTIGATE
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SERVICES- Is there any underground
service ?- Electricity cables, water
pipes, sewers
- SOLUTION ;- Locate the pipes and
cables
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WATER TABLE- The level below which the
ground is saturated with water- Ground water pressure equals
to atmospheric pressure
- IMPACT ON CONSTRUCTION OF A HIGH WATER TABLE ;
- Extra costs to increase trench support
- Presence of chemical such as acid can lead to damage of foundation and other materials used below the ground level
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SUBSOIL- Determine whether the type of subsoil is suitable for the construction
SANDGRAVEL
HARD ROCK CLAYGravel : Ideal subsoil, strong and easily drained
Sand : Loose, subject to movement
Hard Rock : Good foundation, High excavation cost
Clay : Good bearing capacity, does not drain well
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SITE CLEARANCE- Removing existing
structure on the construction site
- Removing shrubs and trees
- Remove soil to reduce level
Bulldozer : equipped with a blade used to push large quantities of materials
[Rear] : claw-like device (ripper) to loosen densely compacted materials
Stump Grinder : power equipment attachment that remove tree stumps
Rotating cutting disk that chips away wood
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TEMPORARY WORKSPart of construction project that are needed to enable the permanent works to be built
• Site office• Site accommodation• Site toilet• Material storage• Security
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Drag picture to placeholder or click icon to add
SECURITY- FENCE AND LOCK- LIGHTING- ALARMS & SECURITY
GUARDS- CCTV
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FENCE & LOCK- Surrounded the whole
construction site- Offer a clear indication to
any outsiders that the area within is strictly off limits.
.LIGHTING
- Large, open and outdoor- Due to these sites seldom
have sufficient lighting - To prevent criminals from
being able to operate in shadow.
.
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ALARMS & SECURITY GUARD
- Image can be recorded or monitored live
- On site or remotely
CCTV
- Install a silent alarm- 24-hour manned guarding
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SCAFFOLDINGA temporary structure on the outside of the building, used by workers to climb up the building to work
Putlog Scaffold
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Independent Scaffold Mobile Access Tower
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TIMBERING Trenches in Firm Soil
Trenches in Bad Soil Trenches in Loose Soil - When ground is so bad that it will not stand to a
vertical surface when poling board is inserted- Should the looseness of the soil supports being
fixed at closer intervals than 6 feet. - Timbering a trench in firm ground, in which case
short deal and batten “ends”.
- Temporary supports to sides of excavations.
- Planking & Strutting
https://www.youtube.com/watch?v=cFYkeT0Yk6k
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Timbering of
trenches
STAY BRACING
VERTICAL SHEETING BOX
SHEETING
RUNNER SYSTEM
SHEET PILING
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Thank you ! (:
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