All Answers (8) 1  This is nice information from wikipedia visit. 2  I guess if you assume the DNA is at rest with an average rise of 3.4 A per base pair, then the length of chr1 would be 3.4A * 249*10^6, i.e. 847*10^6A, i.e. ~85 mm, or 8.5 cm.
Boiler sizing includes two things: 1  The heating and hot water capabilities of the boiler. 2  The physical size of your boiler and whether it will fit in the space you have it destined for.
Unlike conventional boilers, combi-boilers donât need a tank to store hot water, instead they heat on demand and come in gas, electric, and oil-fired versions. The cost of a new combi-boiler will vary depending upon how large your system needs to be and where you purchase it from. For instance:1  A Vaillant combi boiler purchased straight from the producer prices between GBP725 and GBP910.his guide is going to cover the costs involved when installing various types of boilers, including combi, gas, oil and electric boilers. Weâll also give you tips for finding a boiler engineer and we will also supply you with all the information on related installation grants.