Step 3 placing the steel joists.
Roof on a deck built on concrete blocks.
If the area receives frost the piers can be installed above ground but they normally require additional support underneath.
In many areas an overhead on a concrete slab is allowable if the slab is at least 3 1 2 inches thick and each post can support combined live and dead loads of up to 750 pounds a live load comes from stress exerted by wind people and the like.
The steel joists will provide a strong foundation for the flat concrete roofing.
When constructing a deck in an area that receives minor amounts to no frost these piers often serve as suitable deck footings.
Check out our deck footing frost map to help you understand how deep your footings will need to be excavated.
On aug 26 2009 deck blocks are specially constructed portable foundations generally made from poured concrete.
It s a floating deck which means it simply rests on blocks at ground level and is not anchored deeply in the ground.
A dead load comes from the weight of the structure itself.
This type of deck can only be made in areas that do not have a deep winter frost.
The blocks come in several sizes but this guide will assume you are using a 16 3 4 inch wide concrete slab.
Insulated reinforced concrete roof decks the only known roof systems that have consistently survived high category hurricane and tornado velocity winds have been built with structural reinforced concrete decks securely and sufficiently connected to structural reinforced concrete or reinforced concrete block walls.
You could lay your sleepers directly on the concrete but we bought a 1 2 in thick pvc trim board and cut spacer blocks from it.
A free standing roof needs to have posts sunk into the ground.
The builddeck floor roofing decking system is a lightweight stay in place insulating concrete form icf made of expanded polystyrene eps and used to construct a solid monolithic insulating concrete floor and or roof decking system.
Above ground deck piers are precast tapered concrete blocks with a wide base that are intended to rest directly on the ground or a concrete base.
We will teach you how to determine the code compliant size of your footings based on the soil type and tributary loads.
To support a wooden deck deck blocks are quick and easy alternative to digging footings.
A free standing roof can be built over a deck paved patio or concrete pad.
Each block is design to support a wooden structure at the primary joints acting in the same fashion as a poured concrete foundation.
If it is next to a house or structure it should be secured to the siding or roof of that structure as well to keep it stable through high winds and lashing rains.
Spacers let you run sleepers parallel to the house so decking can run perpendicular to the house if that s what you prefer.