Cracked or cracked riser of the stairs leading to the attic of the country house, it is better to repair immediately, not to dosidate injury for this reason.
If the crack is small, you can just seal this place with a nail or screw to wood gave an additional crack. If the defect is serious – it is better to replace the riser, pre-releasing him from the stairs shown on the drawing.
Recommend to read
“AEROBI-100”
For the study of near-earth space in the United States since 1948, began to build rockets "Aerobe". To date released a large number of their modifications. A two-stage rocket "Aerobi...
URAL “THREE-TON”
Autumn the evacuation of 1941, which resulted in the defense enterprises of the capital was transferred to the East of the country, has transformed a provincial town, which was the...