Internet #306232936

Model #DP1200

Store SKU #1003882447

11.5 in. x 11.5 in. x 13 in. 75 lbs. Gray Concrete Head (Includes 4-Pins, 4-Caps and 4-Tips)

Frequently Bought Together


Product Overview

The DP 75 Foundation System is a great system for decks, porches, gazebos and walkways. The Diamond Pier Foundation System in minutes when using the proper install procedures. Visit YouTube or the Diamond Pier website for installation videos.
  • Install in minutes frame immediately
  • Structurally rated and code compliant
  • Lifetime limited warranty
  • Proven performance over 25-year track record



Product Depth (in.)
11.5 in
Product Height (in.)
13 in
Product Width (in.)
11.50 in


Block Type
Deck Block
Color Family
Compression Strength (psi)
Product Weight (lb.)
74 lb

Warranty / Certifications

Manufacturer Warranty
Limited Lifetime

Questions & Answers


Can the system be used for additions on a hilly slope? I’m looking to add a 2 floor addition using lightweight SIPs (structurally insulated panels).

Asked by Parker April 6, 2020

How much does the 75 cost?

Asked by grins October 5, 2019

Too much. Do it the right way. Dig a hole and pour some concrete

Which machinery Used For These Pier

Asked by Manish September 15, 2019

All you need is a sledgehammer to get the pins started, and a jackhammer with DP bit (which the store may loan you). Since my soil is relatively soft, I was able to drive these with a jackhammer I bought for $150. The DP bit didn't work for that jackhammer, but I found someone to weld washers onto one of the bits that came with it and used that. It helps to have two people when installing, one to drive the pins and the other to help place the DP in the beginning and make sure it doesn't rotate when you first start driving the pins.

Could I build a 12'×16' shed on 9 of these?

Asked by Larry August 17, 2019

If you have a deck up close to the house, how do you get pins in without hitting the foundation o...

Asked by Darren April 20, 2019

To determine how far you will be from your house, set the DP on the ground and put the 4 pins in the slots without driving them. How far from the house they are when above ground, will be the same as how how far they'll be from the house once driven in the same spot. But remember if you rotate the pier, that will change the distance. I think Code requires a 6" buffer zone also.

I have a deck that is 50 feet long and 8 feet wide - will the diamond pier hold a deck this size?...

Asked by Decking April 4, 2019

Call your local building inspection department to see if they allow the use of Diamond Piers. Then use Trex's free deck design website to draw up code-compliant plans. The software will indicate how many piers you need and where they should be placed. Submit the plan to request a building permit, indicating you're planning to use DP-50's or 75's as the case may be. I used DP-50's except for one pier that provides support for a roof overhang. The inspector suggested a DP-75 for that one.

Will the diamond pier hold a 20 X15 feet sunroom?

Asked by shea February 22, 2019

That probably wouldn't meeting local building codes. They really want at least a complete frost wall for a sunroom.

What is the length of the pins in this set?

Asked by Brandon October 24, 2018

DP75 w/63" pins (1003-882-447) DP50 w/50" pins (1003-800-715)

Customer Reviews

  • 3 Customer Reviews
  • 4.7 out of 5 stars overall
0% of customers recommended.
Overall Ratings
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One spalled some surface concrete. Looks bad...
One spalled some surface concrete. Looks bad
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Rating provided by a verified purchaser
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They say "time is money" and these saved so much...
They say "time is money" and these saved so much time! I will be recommending these to anyone doing a deck DYI moving forward.
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