British nationals need a visa to enter mainland China, but not Hong Kong or Macao. For mainland China, you must get a visa prior to arrival, including for Hainan Island. For details of entry requirements to China contact the nearest Chinese Embassy or Consulate in good time before your proposed trip.Check your visa validity carefully.Donât overstay your visa or work illegally.or mainland China, you must get a visa prior to arrival, including for Hainan Island. For details of entry requirements to China contact the nearest Chinese Embassy or Consulate in good time before your proposed trip. Check your visa validity carefully. Donât overstay your visa or work illegally.
Best Answer - Chosen by the Asker. A stair refers to the individual step. A stairway and staircase mean the same thing and refer to a set of stairs between one floor and another. This usually refers to an open or semi-open set of stairs such as in a house. A stairwell usually refers to a set of stairs that are surrounded by walls, such as an emergency exit in an office building, hotel, or school.
How to Calculate Stair & Step Riser Height & Tread Width: Stair rise & run design. 1  STAIR RISE & RUN CALCULATIONS - CONTENTS: Stair Building Calculations: simple arithmetic makes for safe stairs that fit the situation. Stair design basics: calculating step riser height, step tread depth, total rise, total run, intermediate platform lengths. Very low angle stairway design Stairway rule of thumb. Measure Actual Stairway Total Run Length & Total Rise Height. Stair Calculations by Direct Layout on the Stringer.