Example sentences of "[be] at [adv] [n mass] [prep] " in BNC.

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1 The cold feed to the cylinder and the vent pipe must be at least 22mm in diameter ; it is best if the hot water distribution pipes are 22mm as well — at least as far as the connection to the branch pipe for the bath .
2 The lowest connection to the stack should be at least 450mm above the bottom of the drain .
3 Any protection screen designed for this purpose should be at least 800mm in height above floor level , and must not contain gaps in excess of 75mm .
4 Feare ( 1970a ) thought it to be at least 90% during the first winter .
5 The holes for the cold feeds must be at least 30mm above the base of the cistern to prevent any dirt or debris in the bottom of the cistern being taken down the pipes .
6 In the UK this will be at about 67° to the horizontal , but it is not critical , as the maximum is quite broad and not very sensitive to angle .
7 Were at least 75% of those interviewed employed ?
8 Were at least 50% of those interviewed working in offices , banks , schools or highly-skilled work ?
9 Maidstone have just two registered players within their squad and are at least £650,000 in debt .
10 The directors of Kelso , however , are disappointed at the continual absence of southern trained horses at their meetings , though half the prizes are at around £1,500 to the winner and few above the £2,500 mark .
11 If , in fact , traffic had warranted operations through a 12 hour day , then the number of men required to work the system would have been 4 not 3 , with some duplication to provide relief , and the total wage bill would have been at least £8 per week , which makes Thomas 's figure look ridiculous .
12 If we had continued to treat patients at the same rate — there has been an unprecedented , inexplicable , and hence unforeseeable rise of 12% in medical emergencies — we would have been at least £0.5m in the red by the end of the financial year .
13 Substantial bleeding may take place ( intracerebral bleeding , 0.3–0.7% ) and the residual mortality is at least 50% of that without thrombolytic treatment .
14 The overflow pipe ( which should be 22mm in diameter ) should be positioned such that the top is at least 20mm below the discharge from the ballvalve and the bottom is at least 25mm above the waterline .
15 The overflow pipe ( which should be 22mm in diameter ) should be positioned such that the top is at least 20mm below the discharge from the ballvalve and the bottom is at least 25mm above the waterline .
16 This stood at 21% of energy demand in 1973 and was at only 22% in 1983 .
17 Enough remained to show that the northern one was at least g by 7. 5 m ( 292 by 242 ft ) , with two rooms of unequal size at the back , while its southern counterpart , of which only the rear 2.5m ( 8 ft ) was recovered , had apparently lain in a walled compound measuring 13 by 6 m ( 42½ by 19½ ft ) .
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