Dear forum readers,
I am looking for advice on how to fasten the substructure for a terrace.
I want to build a terrace in front of our terrace door (approximately 40 cm (16 inches) above ground level), about 5 x 3 m (16 x 10 ft) in size, with wooden decking boards 25 mm (1 inch) thick on supporting beams measuring 45 x 70 mm (2 x 3 inches), both made of bangkirai wood.
The substructure consists of holes about 35 x 35 cm (14 x 14 inches) and around 30 cm (12 inches) deep, filled with paving slabs sized 30 x 30 cm (12 x 12 inches). On top of these is a vertical drainage pipe DN150 (approximately 6 inches), protruding about 25 cm (10 inches) above ground level, filled with concrete, and a post base embedded in it.
Does anyone know of suitable post bases for beams only 45 mm (2 inches) wide and preferably no taller than 60 mm (2.5 inches)? Or should I first lay a wooden sleeper or similar (“sleeper timber”) inside the post base and place the supporting beams on that? So far, I’ve only found post bases with widths of 71/61 mm (3 x 2.5 inches) and heights of around 100 mm (4 inches). Does anyone have a better idea? L-shaped post bases tend to be too tall as well (around 80 mm; 3 inches).
There will probably be many foundations, but because of access restrictions, I can’t bring in an excavator nor remove the sandy soil and completely fill with gravel, etc. A benefit is that I can gradually build the foundations little by little.
The problem is just finding the right post bases. Does the wooden beam need to rest firmly on the base inside the post base, or is it sufficient if it is held only by the side screws?
The ground beneath the terrace will be leveled with a slope of 5–10% away from the house and covered with a geotextile membrane/foil and held down.
Thank you very much for any tips.
I am looking for advice on how to fasten the substructure for a terrace.
I want to build a terrace in front of our terrace door (approximately 40 cm (16 inches) above ground level), about 5 x 3 m (16 x 10 ft) in size, with wooden decking boards 25 mm (1 inch) thick on supporting beams measuring 45 x 70 mm (2 x 3 inches), both made of bangkirai wood.
The substructure consists of holes about 35 x 35 cm (14 x 14 inches) and around 30 cm (12 inches) deep, filled with paving slabs sized 30 x 30 cm (12 x 12 inches). On top of these is a vertical drainage pipe DN150 (approximately 6 inches), protruding about 25 cm (10 inches) above ground level, filled with concrete, and a post base embedded in it.
Does anyone know of suitable post bases for beams only 45 mm (2 inches) wide and preferably no taller than 60 mm (2.5 inches)? Or should I first lay a wooden sleeper or similar (“sleeper timber”) inside the post base and place the supporting beams on that? So far, I’ve only found post bases with widths of 71/61 mm (3 x 2.5 inches) and heights of around 100 mm (4 inches). Does anyone have a better idea? L-shaped post bases tend to be too tall as well (around 80 mm; 3 inches).
There will probably be many foundations, but because of access restrictions, I can’t bring in an excavator nor remove the sandy soil and completely fill with gravel, etc. A benefit is that I can gradually build the foundations little by little.
The problem is just finding the right post bases. Does the wooden beam need to rest firmly on the base inside the post base, or is it sufficient if it is held only by the side screws?
The ground beneath the terrace will be leveled with a slope of 5–10% away from the house and covered with a geotextile membrane/foil and held down.
Thank you very much for any tips.
olfuchs schrieb:
Should the patio pads be smaller than the beams resting on them, or can you simply cut them smaller yourself from those bought at the hardware store?It’s better if the beams rest fully on the pads. Either cut them to size or order the right dimensions online. They are available in various sizes and thicknesses.Similar topics