52 mm to 76 mm 114 mm to 138 mm 138 mm to 152 mm 76 mm to 114 mm
Answer Discuss in Comment
57 mm to 76 mm 138 mm to 152 mm 76 mm to 114 mm 114 mm to 138 mm
55 mm 48 mm 38 mm 25 mm
It should be provide adequate privacy in rooms in respect of light and sound It should be rigid enough to withstand the vibrations It should be constructed from light and durable material All the above
1200 kg/m3 2300 kg/m3 1920 kg/m3 1600 kg/m3
Frieze rail lock rail top rail mullion
obscured glass figured glass roughcast glass all the above
swinging door sliding door rolling shutter door revolving door
battens screeds helpers markers
Timber floor Rubber floor Asphalt floor Mud floor
"Scientists dream about doing great things. Engineers do them."
