Former RAF Faldingworth atomic bomb store: DD atomic bomb storage building to the east of the inner roadway

A former bomb storage building, designated type DD, was constructed in the early 1950s as part of RAF Faldingworth, following designs by the Air Ministry. The building is a long rectangular structure, orientated south-east to north-east, measuring 58 metres in length and 18 metres in width. It is surrounded by earthen bunding, with concrete retaining walls facing the road.

The main storage bay is constructed of reinforced concrete with breeze-block panel infill, the doors being of strengthened metal sheeting. The front of the building is flanked by two projecting wings that are taller than the main structure, and originally contained rooms for ventilation equipment and other plant. Plans indicate a large ventilation pipe extended from these wings along the roof. A substantial gantry extends in front of the main block, elevated above the building's roofline and supported by tall concrete columns. Its roof is made of reinforced concrete, supported by three larger profile concrete beams, which in turn integrate with a principal cross-beam; this central beam also carried the metal hoist track, although the hoist itself is now absent. Concrete retaining walls to either side support the earth bunding. The entrance is through a two-leaf metal reinforced timber door with a wicket in one leaf.

Inside, the storage bay is a large open space divided into eleven bays long by three bays wide, defined by a series of supporting columns and the large roof-supporting beams. The central bay is narrower than the others. The interior is finished with painted render.