Whenever workmen have to excavate in trenches in soil, soft rock or hard soil exceeding ............. m in depth, the trenches should be securely shored and timbered.

Related MCQs

• Heavy equipment, such as excavating machinery, trucks, dumpers, etc. should be kept away from the excavated sides at a distance not less than the depth of trench
• Who should be allowed to go below slab when centering is in position and concreting of slab is going on
• The space between the walls and cement bags all-round should be at least......... cms.
• Timber and plywood should be stacked separately.
• Economic cost is the only reason for which a contractor should be conscious of construction safety.
• Full width of road should be taken for bituminous work at a time so that job is completed in time.
• Pile drivers should be kept near electricity line to get electricity
• If work of piling is to be carried out at night, minimum........... 'lux luminance lights should be used.
• Moving parts of all equipment should be
• Excavated material should be kept nearby from the edge of the trench