Have a guess!

Moving along...moving along..... M House is taking shape quickly, even in challenging weather conditions.

view from the neighbouring community farm. the top triangle in timber will be installed with glass once construction has progressed further (just see how the vegetables in the community farm are struggling in the snow....)

copper pipes connecting under floor radiators are being installed...

almost done with copper pipes. I can just imagine these radiators sitting quietly below the floor once completed, doing their job in the dark...... but anyway, hot water runs in the copper pipes and the heat is radiated by the radiators, heating up the under floor space, which then emits the heat into the entire house evenly

coming out of under floor space and looking to the glazing between rafters. we have originally specified single fixed glazing for ease of construction but the builders upgraded to double glazing units (DGU) for better insulation....woohoo~! problem is, DGUs come completely sealed, with a rather prominent black rim of silicon all the way around in proportion to the glazing size, which disturbed the visual continuity of the rafters from inside to outside..... we had to decide on site to build an extra small timber frame to cover up the black silicon (test piece in the centre)...which works ok because the timber frame is camouflaged by all the timber planes around so is not so noticeable.

So here is the question today..............





What is this concrete block enclosure doing in the under floor space?

Have a guess!!