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CONSTRUCTION TECHNOLOGY

CONSTRUCTION TECHNOLOGY\ CHAI JIA ERN 0324653 \ NA YONG YI 0324458 \\ TEE WAN NEE 0325074 \

ISSUES TO BE TAKEN INTO CONSIDERATION BEFORE CONSTRUCTIONACCESSIBILITY TO SITESERVICEWATER TABLESITE CLEARANCESITE INVESTIGATIONSUBSOILS

Accessibility to site

Consideration on how the vehicles will enter and exit the site.

Condition of road

If no suitable accessibility, temporary site is needed.

Knows the building around the construction site

To reduce disturbance to the resident ( noise )

To guarantee the safety of residentSite investigate

services

Is there any underground service ?Electricity cables, water pipes, sewers

SOLUTION ;Locate the pipes and cables

Water tableThe level below which the ground is saturated with waterGround 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

Subsoil- Determine whether the type of subsoil is suitable for the construction

SANDGRAVELHARD ROCKCLAYGravel : 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

Site clearance

Removing existing structure on the construction site

Removing shrubs and trees

Remove soil to reduce levelBulldozer : 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

Temporary worksPart of construction project that are needed to enable the permanent works to be built

A) ACCOMODATION FOR WORKERSB) SECURITYC)SCAFFOLDINGD) TIMBERING

Temporary worksPart of construction project that are needed to enable the permanent works to be built

Site officeSite accommodationSite toiletMaterial storageGuard house Hoarding

SECURITY

- FENCE AND LOCKLIGHTINGALARMS & SECURITY GUARDSCCTV

Fence & lock

Surrounded the whole construction siteOffer a clear indication to any outsiders that the area within is strictly off limits.

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LIGHTING

Large, open and outdoorDue to these sites seldom have sufficient lighting To prevent criminals from being able to operate in shadow.

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ALARMS & SECURITY GUARDInstall a silent alarm which is designed to contact authorities directly, without giving the intruder any indication that an alarm has been triggered. For elaborate

Image can be recorded or monitored liveOn site or remotely

cctvInstall a silent alarm24-hour manned guarding

There are a variety of CCTV systems available to deter criminals. Image can be recorded or monitored live, either on site or remotely. ELABORATE

SCAFFOLDINGA temporary structure on the outside of the building, used by workers to climb up the building to work

Putlog Scaffold

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

Timbering of trenches

STAY BRACING VERTICAL SHEETING

BOX SHEETING

RUNNER SYSTEM

SHEET PILING