Learning difficulties | Features

Speed: How much of a typical housing scheme can workers build in a week?
	Number of units	Area (m2)	Unit size (m2)	Build time (weeks)	Build method	m2/week
Denmark	60	5200	86.7	56	Precast concrete	92.86
Germany	64	5534	81.5	60	Prefab limestone blocks	92.23
UK	69	4719	68.4	70	Brick/block	67

Efficiency: How much labour is needed to build 1 m2
	Units	Area (m2)	Average unit	Operative input (hr/m2)
UK	131	9212	70	19.3
Germany	64	4426	79	15.5
Denmark	60	5200	87	12.9